0.1.22

CHANGELOG.md

@@ -0,0 +1,30 @@
+# Changelog
+
+## 0.1.22 — 2026-08-11
+
+### Fixed
+
+- Manifest assets that share the same id under different types are now all kept in the by-id index. Previously the first same-id entry (e.g. `W3DHierarchy:AUMCV_HOVER`) could shadow later definitions (e.g. `W3DContainer:AUMCV_HOVER`), causing `Model@Name` and other `BaseRenderAssetType` references to be reported as unresolved even though the asset existed in `Static.manifest`.
+- `xi:include` without an `xpointer` now splices the target document's root element itself (XInclude semantics), so fragments like `GenericCelestialBuildingSuicide.xml` keep their module wrapper (`CreateObjectDie`) instead of only inserting its children.
+- Fragment files (documents whose root is not `AssetDeclaration`) no longer trigger standalone-document diagnostics: top-level `missing-id`, duplicate-id, unresolved-reference and undefined-define checks are skipped, unknown wrapper roots are not reported as unknown elements, and a known fragment root still validates its subtree's elements/attributes.
+
+### Added
+
+- Missing `xi:include` targets now surface in the Problems panel as `include-not-found` warnings for the edited document (previously only tracked in indexer diagnostics).
+
+## 0.1.21 — 2026-08-11
+
+### Added
+
+- English/Chinese localization for the extension manifest, commands, settings, status bar, notifications, hover, completions, CodeLens, and diagnostics.
+- `package.nls.*` and `l10n/` bundles so future languages can be added without touching source code.
+- AI-generated project disclosure in both `README.md` and `README.zh-CN.md`.
+
+### Changed
+
+- Packaged extension now includes localization resources.
+- `npm run package` no longer fails on missing repository-link rewriting.
+
+### Fixed
+
+- Parser errors carry stable codes and parameters so the UI layer can localize them while the parsing core stays VS Code-independent.

LICENSE

@@ -0,0 +1,60 @@
+# RA3 Mod XML License
+
+## Original code — MIT
+
+Copyright (c) 2026 The RA3 Mod XML contributors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+## EA Mod SDK-derived data
+
+The following file is generated from materials distributed with the
+Command & Conquer: Red Alert 3 Mod SDK, which is owned by Electronic Arts Inc.
+and its licensors:
+
+- `src/model/schema-model.json` — generated by `tools/xsd-to-model.mjs` from
+  the SDK's XSD schemas.
+
+This file is not covered by the MIT license above. It is included only for
+modding interoperability and remains subject to the EA Tools & Materials
+End User License. "Command & Conquer" and "Red Alert 3" are trademarks of
+their respective owners.
+
+This extension does not bundle the RA3 Mod SDK; the SDK must be installed
+separately by the user.
+
+## OpenSAGE-derived files — LGPL-3.0
+
+The following files are derived from OpenSAGE
+(<https://github.com/OpenSAGE/OpenSAGE>), which is licensed under the GNU
+Lesser General Public License version 3:
+
+- `src/indexer/manifestParser.ts` — ported from
+  `src/OpenSage.Game/Data/StreamFS/ManifestFile.cs`.
+- `src/model/asset-types.json` — extracted from
+  `src/OpenSage.Game/Data/StreamFS/AssetType.cs`.
+
+These files are licensed under LGPL-3.0. The full license text is available at
+<https://www.gnu.org/licenses/lgpl-3.0.html> and in the vendored OpenSAGE copy
+at `OpenSAGE/LICENSE.md`.
+
+## Other files
+
+Unless stated otherwise above, all other files in this repository are
+licensed under the MIT license above.

README.md

@@ -1,127 +1,235 @@
-# RA3 Mod XML（VS Code 扩展）
+> This site is not endorsed by or affiliated with Electronic Arts, or its licensors. Trademarks are the property of their respective owners. Game content and materials copyright Electronic Arts Inc. and its licensors. All Rights Reserved.
+>
+> RA3 Mod XML is an unofficial player-made tool. It requires a separately installed RA3 Mod SDK.
 
-面向《命令与征服：红色警戒 3》Mod XML（SAGE / BinaryAssetBuilder 格式）的 VS Code 工具扩展。
+[**English**](README.md) | [中文](README.zh-CN.md)
 
-## 功能
+# RA3 Mod XML
 
-- **语法高亮**：在普通 XML 高亮之上叠加领域标记（`$DEFINE` 常量、`inheritFrom`、`xai:joinAction`、结构标签）；XML 语法异常（如未闭合引号）期间由语义 token 兜底，标签/属性/值着色不中断。
-- **自动补全**：
-  - 元素名：按当前父元素的 XSD 模型补全子元素；顶层资产（`AssetDeclaration` 内）补全 `GameObject`、`WeaponTemplate` 等 295 种类型。已输入 `<` 时补全保留该 `<`、只替换名称区（不会出现 `<<`）；需要填文本的 simple-content 元素（如 `<CreateObject>`）补全为 `<CreateObject>$1</CreateObject>` 并自动弹出值补全，而不是无法填值的自闭合标签。
-  - 属性名：必填属性优先，附带类型/文档/默认值；自动提示 `xai:joinAction` 与 `xmlns:xai`。接受补全时自动避免与上一个属性贴在一起，并按文件已有的排版补空格或换行（换行的基础缩进由编辑器提供，插件不再内嵌缩进以免叠加）；数字/角度/时间等标量属性直接填入 XSD 默认值或类型示例（如 `0d`、`0s`），引用/枚举/布尔等保留真正的 `$1` 占位符并弹出值补全。
-  - 属性值：
-    - 引用型属性（如 `CommandSet`、`Weapon`）按 `xas:refType` 补全对应类型的资产 ID（**同名 ID 只补全匹配类型**）；
-    - `inheritFrom` 补全可继承的资产 ID；
-    - 枚举与位标志列表（如 `Include type`、`LocomotorTemplate@Surfaces`、`KindOf`；列表值在空格后自动继续补全下一项，已使用的 flag 不再重复推荐，闭合值末尾可直接追加新 flag）；
-    - 布尔值、`$DEFINE` 常量；
-    - `<Include source>` 补全可解析的 `DATA:` / `ART:` / `AUDIO:` 与项目相对路径。
-  - 元素文本内容：simple-content 引用元素（如 `<CreateObject>`、`<RequiredUpgrade>`、`<SpawnTemplate>`）直接在标签间补全对应类型的资产 ID（`GameObjectWeakRef` → GameObject）、枚举或 `$DEFINE`。
-    接受片段后的 `$1` 光标位置会立即弹出值补全，而不是属性名；引用列表超过
-    400 条时标记为不完整，继续输入会重新请求，因此 `CrateDebris_01` 这类排在
-    列表后部的 id 不会因首屏截断而消失。
-- **悬停提示**：元素/属性显示 XSD 文档、类型、必填/默认值；引用值显示定义位置；`$DEFINE` 显示值与定义位置；`Include source` / `xi:include href` 显示解析后的目标文件；`xi:include` 元素与属性给出 XInclude 说明。
-- **引用导航**：从引用值（`CommandSet="..."`、`Weapon="..."`、`inheritFrom`、`<CreateObject>ID</CreateObject>` 等元素文本）跳转到定义（严格按引用类型过滤，候选由 `ra3modxml.definitionMode` 控制：`all` 列出 mod + 原版、`project-only` 优先项目内定义）；`Ctrl+点击` Include / `xi:include href` 打开目标文件；Find All References 同时搜索属性值与元素文本内容；文档大纲列出顶层资产与 `$DEFINE`。
-- **当前文档局部作用域（T1）**：即使一个文件不在任何全局流里（没有从
-  `Data/Mod.xml` / `additionalmaps` 可达），插件也会按当前文件自身的资产、
-  `$DEFINE` 及其 include 链建立局部索引。`xi:include` 会在逻辑树中展开，
-  使 include 进来的内容获得正确的父上下文；`AttachModuleId` / `ModuleId` /
-  `AutoResolveBody` 等管线局部（Poid）引用可以补全、悬停与跳转到同一
-  GameObject 内的模块（含通过 `xi:include` 拼入的兄弟模块）。
-- **错误检查**：XML 格式错误、未知元素/属性（`xi:` 等外来命名空间不误报）、顶层资产缺 `id`、重复 ID、未解析引用（含属性值与元素文本内容、类型不匹配）、Include / 嵌套 `xi:include` 目标找不到、`$DEFINE` 未定义。
-- **manifest 支持**：`<Include type="reference">` 指向的 `static/global/audio.manifest`（SDK `builtmods`）会被解析，manifest 中的原版资产 ID 可用于补全/悬停/导航/诊断。
-- **美术资产（`.w3x`）**：`W3X.xml` / `ART:` include 链中的 `.w3x` 模型文件会被
-  索引（`W3DContainer` / `W3DMesh` / `W3DHierarchy` 等顶层资产），因此
-  `Model@Name`、`Hierarchy`、`Mesh` 等引用可以解析、悬停与跳转。超大模型
-  （几十 MB 的顶点/三角形数据）采用浅扫描——只提取顶层资产记录、不建 DOM 树，
-  结果在 workspace 级缓存并跨重建复用，保存文件触发的重建不会重读未变化的模型文件。
-- **索引分阶段与部分可用性**：先建立 XML + manifest 索引（首建早期即可用），
-  w3x 美术资产随后台扫描补齐。索引完成前，语法/模型诊断、枚举与子元素补全、
-  Include 跳转/悬停照常工作；引用类诊断会“显示但标注”
-  （`unresolved-reference-indexing` + `(index incomplete)` 说明），不会把
-  未完成的索引误当成最终结论。
-- **大项目性能**：索引记录（资产 / Define / Include / 行号）与 include 解析结果
-  跨重建缓存，保存触发的重建零 stat、零重读（Corona 实测约 2 秒）；DOM 树只按需
-  保留并设元素预算，避免内存膨胀。编辑器外的文件改动（git pull、导出工具）会
-  触发防抖重建；构建期间文件再次被修改时，已发布索引会标记 `(stale)` 并自动重跑。
-  include 路径解析使用目录枚举建立的文件集快照（无 statSync 风暴）；records
-  缓存会持久化到磁盘（gzip + 多信号 stat 校验 + 原子写），重启 VS Code 后冷启动
-  只需秒级校验，Corona 实测约 11 秒（首次全量约 2 分钟）。
+> **AI-generated project**
+>
+> This extension was generated almost entirely by AI. As a result, there may be unexpected bugs or edge cases. Bug reports, corrections, and feedback are very welcome.
 
-## 使用
+A VS Code extension that brings **IntelliSense, navigation, reference tracking, and diagnostics** to XML-based mods for **Command & Conquer: Red Alert 3**.
 
-1. 用 VS Code 打开 RA3 Mod 项目文件夹（含 `Data/Mod.xml` 或 `mod.babproj`）。
-2. 插件自动激活并开始后台索引（状态栏显示阶段与资产数量；扩展也会在打开
-   任意 XML 文件时激活，非 RA3 工作区不会显示 RA3 专属功能）。
-3. 编辑任意 `*.xml` 即可获得补全、跳转与诊断。
+It understands the RA3 Mod SDK's XML schema, asset types, references, includes, and vanilla game data — so editing a large mod feels much more like working with a real programming language.
 
-### 设置（`settings.json`）
+<table>
+  <tr>
+    <td align="center">
+      <strong>Intelligent Completion</strong><br>
+      <a href="https://ra3modxml-images.ratotal.workers.dev/enum_completion.gif">
+        <img src="https://ra3modxml-images.ratotal.workers.dev/enum_completion.gif" alt="RA3 XML intelligent completion" width="100%">
+      </a>
+    </td>
+    <td align="center">
+      <strong>Go to Definition</strong><br>
+      <a href="https://ra3modxml-images.ratotal.workers.dev/navigation.gif">
+        <img src="https://ra3modxml-images.ratotal.workers.dev/navigation.gif" alt="RA3 XML navigation" width="100%">
+      </a>
+    </td>
+  </tr>
+</table>
 
-| 设置 | 默认值 | 说明 |
-|---|---|---|
-| `ra3modxml.sdkPath` | `C:\Apps\RA3-MODSDK-X` | Mod SDK 根目录 |
-| `ra3modxml.indexSageXml` | `true` | 是否索引 SDK 的 `SageXml` 原版源码 |
-| `ra3modxml.reportUnresolvedReferences` | `warning` | 未解析引用诊断级别（`warning`/`information`/`none`） |
-| `ra3modxml.diagnoseUnknownElements` | `true` | 是否报告未知元素/属性（自定义 XSD 项目可关闭） |
-| `ra3modxml.definitionMode` | `all` | 跳转候选：`all` 列出 mod 定义与原版定义（mod 优先）；`project-only` 仅在项目内已有定义时直接跳转 mod 定义 |
-| `ra3modxml.additionalDataSearchPaths` | `[]` | 追加的 `DATA:` 搜索目录 |
+<p align="center">
+  <strong>Reference-aware completion</strong><br>
+  <a href="https://ra3modxml-images.ratotal.workers.dev/ref_completion.gif">
+    <img src="https://ra3modxml-images.ratotal.workers.dev/ref_completion.gif" alt="RA3 XML reference completion" width="80%">
+  </a>
+</p>
 
-### 命令
+## Features
 
-- `RA3 Mod XML: Re-index workspace`：手动重建索引。
-- `RA3 Mod XML: Show index report`：查看索引统计。
-- `RA3 Mod XML: Clear caches and rebuild`：清空内存/磁盘缓存并强制全量重建。
-- `RA3 Mod XML: Show cache report`：查看磁盘缓存路径、大小、校验统计与命中数。
+### Intelligent Completion
 
-## 开发
+Get context-aware completion based on the RA3 XML schema and project data.
+
+* Elements and attributes based on the RA3 XSD
+* Required attributes, types, documentation, and default values
+* Asset references such as `Weapon`, `CommandSet`, and `inheritFrom`
+* Enum values and flag lists such as `KindOf` and `Surfaces`
+* Asset IDs in text-content elements such as `<CreateObject>` and `<RequiredUpgrade>`
+* `DATA:`, `ART:`, and `AUDIO:` paths
+* Automatic continuation when editing flag lists
+
+Reference completion is type-aware, so an asset ID is only suggested where its asset type is valid.
+
+### Syntax Highlighting
+
+RA3-specific constructs are highlighted on top of the built-in XML grammar.
+
+### Navigation & References
+
+Navigate through a mod's asset graph directly from the editor.
+
+* **Go to Definition** (Ctrl+Click) for asset references
+* **Find All References** using semantic reference information
+* **Reference CodeLens** showing how many times an asset is referenced
+* Hover information for elements, attributes, references, and `$DEFINE`s
+* Ctrl+Click navigation for `Include` and `xi:include`
+* Document outline for top-level assets and `$DEFINE`s
+
+### Diagnostics
+
+Catch common modding mistakes while you edit.
+
+* XML syntax errors
+* Unknown elements and attributes
+* Missing or duplicate asset IDs
+* Unresolved asset references
+* References to the wrong asset type
+* Undefined `$DEFINE`s
+
+### Project Analysis
+
+The extension can analyze the entire workspace rather than only the file currently open.
+
+**Find unreferenced assets** lists project assets that are not referenced anywhere in the workspace, helping identify obsolete or accidentally unused definitions.
+
+Run:
+
+`RA3 Mod XML: Find unreferenced assets…`
+
+You can also use the editor context menu to find unreferenced assets of the current asset type.
+
+### Vanilla SDK Integration
+
+The extension can use asset definitions from the **RA3 Mod SDK**, allowing vanilla game assets to participate in completion, hover information, navigation, and diagnostics.
+
+`<Include type="reference">` manifests such as `static.manifest`, `global.manifest`, and `audio.manifest` (from the SDK's `builtmods` directory) are supported when the corresponding SDK data is available.
+
+### Large Mod Support
+
+Workspace indexing runs in the background and uses persistent caches to avoid rebuilding everything on every VS Code launch.
+
+The extension has been tested on Corona Mod, a large size RA3 mod:
+- 32000+ assets
+- 8000+ XML files
+- 3000+ W3X files
+- **Full index:** ~3 minutes
+- **Cached startup:** ~40 seconds to validate cached data and rebuild the in-memory index
+
+Measurements were taken on a mechanical hard drive. Actual performance depends on hardware and project structure.
+
+## Getting Started
+
+1. Install the extension from the VS Code Marketplace.
+2. Open your RA3 Mod project folder in VS Code.
+3. Make sure the workspace contains `Data/Mod.xml`, `Data/additionalmaps/mapmetadata_*.xml`, or a `*.babproj` file.
+4. Set the RA3 Mod SDK path if necessary — the extension can auto-detect an
+   installed SDK from the Windows registry, or you can pick the folder
+   manually. Leaving it empty runs the extension in project-only mode.
+5. Open any `*.xml` file and start editing.
+
+The extension automatically detects RA3 Mod workspaces and starts indexing in
+the background. When the SDK is missing it shows a status-bar hint and offers
+to configure the path (once per session).
+
+## Configuration
+
+| Setting                                | Default                | Description                                                                     |
+| -------------------------------------- | ---------------------- | ------------------------------------------------------------------------------- |
+| `ra3modxml.sdkPath`                    | *(empty)*              | Path to the RA3 Mod SDK; empty disables vanilla SDK features (project-only mode) |
+| `ra3modxml.indexSageXml`               | `true`                 | Index vanilla XML definitions from the SDK's `SageXml` directory                |
+| `ra3modxml.reportUnresolvedReferences` | `warning`              | Diagnostic level for unresolved references: `warning`, `information`, or `none` |
+| `ra3modxml.diagnoseUnknownElements`    | `true`                 | Report unknown XML elements and attributes                                      |
+| `ra3modxml.definitionMode`             | `all`                  | Choose between project and vanilla definitions when navigating to references    |
+| `ra3modxml.additionalDataSearchPaths`  | `[]`                   | Additional directories searched for `DATA:` paths                               |
+
+If the SDK is installed, the extension detects it from the registry and offers
+it with one click; otherwise you can set `ra3modxml.sdkPath` manually or use
+the `RA3 Mod XML: Configure SDK path…` command.
+
+An empty `ra3modxml.sdkPath` is also the default value. Leaving the setting
+untouched does **not** suppress the SDK setup hint; only explicitly setting it
+to an empty string opts out of SDK features permanently.
+
+## Commands
+
+* `RA3 Mod XML: Re-index workspace`
+* `RA3 Mod XML: Show index report`
+* `RA3 Mod XML: Clear caches and rebuild`
+* `RA3 Mod XML: Configure SDK path…`
+* `RA3 Mod XML: Show cache report`
+* `RA3 Mod XML: Find unreferenced assets…`
+* `RA3 Mod XML: Find unreferenced assets of this type`
+
+## Requirements
+
+* Visual Studio Code
+* A Red Alert 3 Mod SDK installation for full schema and vanilla asset support
+* A RA3 Mod project containing `Data/Mod.xml`, `Data/additionalmaps/mapmetadata_*.xml`, or a `*.babproj` file
+
+## Development
 
 ```powershell
 npm install
-npm run generate-model   # 从 SDK XSD 重新生成 src/model/schema-model.json
-npm test                 # 单元测试（tsc + node --test）
-npm run build            # esbuild 打包到 dist/
-npm run package          # 生成可安装的 .vsix
+
+npm run generate-model   # Generate the runtime schema model from the SDK XSD
+npm test                 # Run unit tests
+npm run build            # Build the extension
+npm run package          # Create a .vsix package
 ```
 
-测试夹具：`test/fixtures/minimod`（含 include、重复 ID、同名不同类型 ID、manifest 回退等场景）。
+Test fixtures are located in `test/fixtures/minimod` and cover scenarios including includes, duplicate IDs, same-name/different-type IDs, and manifest fallback.
 
-## 架构
+## Architecture
 
-```
+The extension is organized around a VS Code-independent parsing and indexing core:
+
+```text
 src/
-  extension.ts            激活入口与 provider 注册
-  workspace.ts            项目检测、索引生命周期、状态栏
-  settings.ts             配置读取（sdkPath、definitionMode 等）
+  extension.ts
+  projectRoot.ts
+  workspace.ts
+  settings.ts
+
   language/
-    xmlParser.ts          带源码偏移的轻量 XML 解析器（容错、行尾恢复）
-    context.ts            补全上下文分析
-    typeContext.ts        上下文感知元素类型解析
-    semanticTokens.ts     语义 token 兜底高亮（纯 TS）
+    xmlParser.ts
+    context.ts
+    typeContext.ts
+    semanticTokens.ts
+
   model/
-    schemaModel.ts        XSD 模型运行时（schema-model.json / asset-types.json 由 tools 生成）
+    schemaModel.ts
+    schema-model.json   # Generated XSD model, bundled with the extension
+    asset-types.json    # Generated AssetType hash table, bundled with the extension
+
   indexer/
-    includeResolver.ts    Include 路径解析（纯 TS，移植 check_duplicate_ids.py）
-    existence.ts          文件集存在性快照（目录枚举 Set，替代逐路径 statSync）
-    manifestParser.ts     .manifest 二进制解析（移植 OpenSAGE ManifestFile.cs）
-    fileScanner.ts        目录扫描与 Include source 候选
-    refs.ts               引用目标解析（按引用类型过滤）
-    xpointer.ts           xi:include xpointer 子集解析（纯 TS）
-    logicalTree.ts        当前文档逻辑树（xi:include 拼接、局部作用域）
-    localScope.ts         文档局部索引 overlay（自身链 + include 链）
-    shallowScan.ts        .w3x 等大体积美术资产顶层浅扫描（纯 TS，不建 DOM）
-    records.ts            每文件紧凑索引记录（资产/Define/Include/xi + 行号）
-    caches.ts             跨重建持久缓存（DocumentCache / IndexRecordsCache /
-                          IncludeResolveCache）+ 失效纪元 InvalidationsEpoch
-    diskCache.ts          跨会话磁盘缓存（gzip JSON、原子写、多信号 stat 校验）
-    indexer.ts            工作区索引器（后台、缓存、记录驱动重建、分阶段发布）
-  features/               completion / hover / navigation / diagnostics / semanticTokens
-syntaxes/                 TextMate 注入语法
-tools/                    XSD → 模型、AssetType 枚举提取
+    includeResolver.ts
+    existence.ts
+    manifestParser.ts
+    fileScanner.ts
+    refs.ts
+    referenceIndex.ts
+    xpointer.ts
+    logicalTree.ts
+    localScope.ts
+    shallowScan.ts
+    records.ts
+    caches.ts
+    diskCache.ts
+    indexer.ts
+    types.ts
+
+  features/
+    completion.ts
+    hover.ts
+    navigation.ts
+    references.ts
+    codeLens.ts
+    unreferenced.ts
+    diagnostics.ts
+    semanticTokens.ts
+
+syntaxes/
+  ra3modxml.tmLanguage.json   # Injected domain grammar (keeps the built-in XML grammar)
+
+tools/
+  xsd-to-model.mjs            # Generates schema-model.json from the SDK XSD
+  extract-asset-types.mjs     # Extracts AssetType hashes from OpenSAGE
 ```
 
-解析/索引核心不依赖 VS Code API，可被其他工具复用（见 `docs/plan.md` 的远期目标：搜索与索引复用）。
+## References
 
-## 参考
-
-- 领域说明与需求：`docs/requirements.md`
-- 调研与设计决策：`docs/plan.md`
-- 问题分析与修复记录：`docs/analysis-issues.md`
-- Manifest 格式参考：OpenSAGE `src/OpenSage.Game/Data/StreamFS/ManifestFile.cs`（本仓库 `OpenSAGE/` 子目录，commit `d45d361`）
+* OpenSAGE `ManifestFile.cs` — manifest format reference

README.zh-CN.md

@@ -0,0 +1,232 @@
+> This site is not endorsed by or affiliated with Electronic Arts, or its licensors. Trademarks are the property of their respective owners. Game content and materials copyright Electronic Arts Inc. and its licensors. All Rights Reserved.
+>
+> RA3 Mod XML is an unofficial player-made tool. It requires a separately installed RA3 Mod SDK.
+
+[English](README.md) | [**中文**](README.zh-CN.md)
+
+# RA3 Mod XML
+
+> **AI 生成项目**
+>
+> 本扩展几乎完全由 AI 生成，因此可能存在意外 bug 或边界情况。欢迎提交 bug 报告、修正与反馈。
+
+一款面向 **《命令与征服：红色警戒 3》** XML 模组的 VS Code 扩展，提供 **IntelliSense、导航、引用追踪与诊断** 能力。
+
+它理解 RA3 Mod SDK 的 XML schema、资产类型、引用、include 以及原版游戏数据——编辑大型模组的体验会更接近真正的编程语言。
+
+<table>
+  <tr>
+    <td align="center">
+      <strong>智能补全</strong><br>
+      <a href="https://ra3modxml-images.ratotal.workers.dev/enum_completion.gif">
+        <img src="https://ra3modxml-images.ratotal.workers.dev/enum_completion.gif" alt="RA3 XML 智能补全" width="100%">
+      </a>
+    </td>
+    <td align="center">
+      <strong>转到定义</strong><br>
+      <a href="https://ra3modxml-images.ratotal.workers.dev/navigation.gif">
+        <img src="https://ra3modxml-images.ratotal.workers.dev/navigation.gif" alt="RA3 XML 导航" width="100%">
+      </a>
+    </td>
+  </tr>
+</table>
+
+<p align="center">
+  <strong>引用感知补全</strong><br>
+  <a href="https://ra3modxml-images.ratotal.workers.dev/ref_completion.gif">
+    <img src="https://ra3modxml-images.ratotal.workers.dev/ref_completion.gif" alt="RA3 XML 引用补全" width="80%">
+  </a>
+</p>
+
+## 功能特性
+
+### 智能补全
+
+基于 RA3 XML schema 与项目数据，提供上下文感知的补全。
+
+* 基于 RA3 XSD 的元素与属性
+* 必填属性、类型、文档与默认值
+* 资产引用，如 `Weapon`、`CommandSet` 与 `inheritFrom`
+* 枚举值与标志位列表，如 `KindOf` 与 `Surfaces`
+* 文本内容元素中的资产 ID，如 `<CreateObject>` 与 `<RequiredUpgrade>`
+* `DATA:`、`ART:` 与 `AUDIO:` 路径
+* 编辑标志位列表时的自动续写
+
+引用补全是类型感知的，因此资产 ID 只会在其类型有效的位置被提示。
+
+### 语法高亮
+
+在保留内置 XML 语法的基础上，额外高亮 RA3 特有的结构。
+
+### 导航与引用
+
+直接在编辑器中浏览模组的资产关系图。
+
+* 资产引用的**转到定义**（Ctrl+Click）
+* 基于语义引用信息的**查找所有引用**
+* **引用 CodeLens**：显示资产被引用了多少次
+* 元素、属性、引用与 `$DEFINE` 的悬停信息
+* `Include` 与 `xi:include` 的 Ctrl+Click 导航
+* 顶层资产与 `$DEFINE` 的文档大纲
+
+### 诊断
+
+在编辑时发现常见的模组编写错误。
+
+* XML 语法错误
+* 未知元素与属性
+* 缺失或重复的资产 ID
+* 无法解析的资产引用
+* 引用了错误的资产类型
+* 未定义的 `$DEFINE`
+
+### 项目分析
+
+扩展可以分析整个工作区，而不仅仅是当前打开的文件。
+
+**查找未引用的资产** 会列出工作区中任何地方都未被引用的项目资产，帮助识别过时或意外未使用的定义。
+
+运行：
+
+`RA3 Mod XML: Find unreferenced assets…`
+
+你也可以使用编辑器右键菜单查找当前资产类型的未引用资产。
+
+### 原版 SDK 集成
+
+扩展可以使用 **RA3 Mod SDK** 中的资产定义，让原版游戏资产参与补全、悬停、导航与诊断。
+
+当对应的 SDK 数据可用时，支持 `<Include type="reference">` 引用的 manifest，例如 SDK `builtmods` 目录下的 `static.manifest`、`global.manifest` 与 `audio.manifest`。
+
+### 大型模组支持
+
+工作区索引在后台运行，并使用持久化缓存，避免每次启动 VS Code 时都重建全部数据。
+
+扩展已在大型 RA3 模组日冕 Mod 上测试：
+
+- 32000+ 资产
+- 8000+ XML 文件
+- 3000+ W3X 文件
+- **完整索引：** 约 3 分钟
+- **缓存启动：** 约 40 秒校验缓存数据并重建内存索引
+
+以上数据在机械硬盘上测得。实际性能取决于硬件与项目结构。
+
+## 开始使用
+
+1. 从 VS Code Marketplace 安装扩展。
+2. 在 VS Code 中打开 RA3 Mod 项目文件夹。
+3. 确保工作区包含 `Data/Mod.xml`、`Data/additionalmaps/mapmetadata_*.xml` 或 `*.babproj` 文件。
+4. 如有必要，配置 RA3 Mod SDK 路径——扩展可以从 Windows 注册表自动检测已安装的
+   SDK，也可以手动选择文件夹；留空则进入仅项目模式。
+5. 打开任意 `*.xml` 文件开始编辑。
+
+扩展会自动检测 RA3 Mod 工作区并在后台开始索引。当缺少 SDK 时，状态栏会给出提示，
+并在每个会话中提供一次一键设置入口。
+
+## 配置
+
+| 设置                                | 默认值                  | 说明                                                                             |
+| ----------------------------------- | ----------------------- | -------------------------------------------------------------------------------- |
+| `ra3modxml.sdkPath`                 | *(空)*                   | RA3 Mod SDK 的路径；留空则禁用原版 SDK 功能（仅项目模式）                          |
+| `ra3modxml.indexSageXml`            | `true`                  | 索引 SDK `SageXml` 目录中的原版 XML 定义                                          |
+| `ra3modxml.reportUnresolvedReferences` | `warning`             | 无法解析引用的诊断级别：`warning`、`information` 或 `none`                       |
+| `ra3modxml.diagnoseUnknownElements` | `true`                  | 报告未知的 XML 元素与属性                                                        |
+| `ra3modxml.definitionMode`          | `all`                   | 导航引用时选择项目定义或原版定义                                                  |
+| `ra3modxml.additionalDataSearchPaths` | `[]`                  | 额外的 `DATA:` 路径搜索目录                                                      |
+
+如果已安装 SDK，扩展会从注册表检测到它并提供一键设置；也可以手动设置
+`ra3modxml.sdkPath`，或使用 `RA3 Mod XML: Configure SDK path…` 命令。
+
+`ra3modxml.sdkPath` 的默认值本身就是空字符串。**不修改该设置**不会抑制 SDK
+设置提示；只有显式把它设为空字符串，才表示永久禁用 SDK 功能。
+
+## 命令
+
+* `RA3 Mod XML: Re-index workspace`（重新索引工作区）
+* `RA3 Mod XML: Show index report`（显示索引报告）
+* `RA3 Mod XML: Clear caches and rebuild`（清除缓存并重建）
+* `RA3 Mod XML: Configure SDK path…`（配置 SDK 路径）
+* `RA3 Mod XML: Show cache report`（显示缓存报告）
+* `RA3 Mod XML: Find unreferenced assets…`（查找未引用的资产…）
+* `RA3 Mod XML: Find unreferenced assets of this type`（查找此类型的未引用资产）
+
+## 环境要求
+
+* Visual Studio Code
+* 安装 Red Alert 3 Mod SDK，以获得完整的 schema 与原版资产支持
+* 包含 `Data/Mod.xml`、`Data/additionalmaps/mapmetadata_*.xml` 或 `*.babproj` 文件的 RA3 Mod 项目
+
+## 开发
+
+```powershell
+npm install
+
+npm run generate-model   # 从 SDK XSD 生成运行时 schema 模型
+npm test                 # 运行单元测试
+npm run build            # 构建扩展
+npm run package          # 打包 .vsix
+```
+
+测试夹具位于 `test/fixtures/minimod`，覆盖 include、重复 ID、同名不同类型 ID 以及 manifest 回退等场景。
+
+## 架构
+
+扩展围绕一个与 VS Code 无关的解析与索引核心组织：
+
+```text
+src/
+  extension.ts
+  projectRoot.ts
+  workspace.ts
+  settings.ts
+
+  language/
+    xmlParser.ts
+    context.ts
+    typeContext.ts
+    semanticTokens.ts
+
+  model/
+    schemaModel.ts
+    schema-model.json   # 生成的 XSD 模型，随扩展打包
+    asset-types.json    # 生成的 AssetType 哈希表，随扩展打包
+
+  indexer/
+    includeResolver.ts
+    existence.ts
+    manifestParser.ts
+    fileScanner.ts
+    refs.ts
+    referenceIndex.ts
+    xpointer.ts
+    logicalTree.ts
+    localScope.ts
+    shallowScan.ts
+    records.ts
+    caches.ts
+    diskCache.ts
+    indexer.ts
+    types.ts
+
+  features/
+    completion.ts
+    hover.ts
+    navigation.ts
+    references.ts
+    codeLens.ts
+    unreferenced.ts
+    diagnostics.ts
+    semanticTokens.ts
+
+syntaxes/
+  ra3modxml.tmLanguage.json   # 注入式领域语法（保留内置 XML 语法）
+
+tools/
+  xsd-to-model.mjs            # 从 SDK XSD 生成 schema-model.json
+  extract-asset-types.mjs     # 从 OpenSAGE 提取 AssetType 哈希
+```
+
+## 参考
+
+* OpenSAGE `ManifestFile.cs` — manifest 格式参考

docs/analysis-issues.md

@@ -325,69 +325,6 @@ hover 同时显示 `No matching definition of the expected declared type...`。
 
 ---
 
-## 十、问题分析（第五轮，2026-08-01）：`xi:include` 的 `href`/`xpointer` 误报未知属性
-
-### 问题
-
-AttachTest `Allied Vehicle\Guardian Tank\GameObject.xml` 第 249 行附近：
-
-```xml
-<xi:include
-    href="DATA:Includes/HeadlightDraw2.xml"
-    xpointer="xmlns(n=uri:ea.com:eala:asset) xpointer(/n:HeadlightDraw2/child::*)"/>
-```
-
-报两条 `Unknown attribute "href" / "xpointer" for <include>`（`unknown-attribute`），
-hover 同时显示 `Unknown attribute for this element.`。
-
-这个元素属于 **W3C XInclude 命名空间**（`xmlns:xi="http://www.w3.org/2001/XInclude"`），
-并不是 EA `uri:ea.com:eala:asset` XSD 的一部分。同一行在第二轮“问题 C”处理过
-（嵌套 `xi:include` 的索引与导航），但那轮没有覆盖 unknown-attribute 诊断，属于遗留缺口。
-
-### 根因
-
-诊断的属性校验没有像元素校验那样排除外来命名空间：
-
-- 元素校验已有 `!el.name.startsWith("xi:")` 守卫（所以 `<include>` 本身不报 unknown element）；
-- 属性校验只跳过 `xmlns*` / `xai:` / `xi:` 前缀的属性名，而 `href`、`xpointer` 是不带
-  前缀的普通属性名；
-- `<xi:include>` 解析类型为 null（XSD 模型不含该元素），knownAttrs 为空 → 任何属性
-  都被判为 unknown。
-
-### 修复
-
-1. `schemaModel` 新增两个纯函数：
-   - `isXsdElementName`：`xi:` 前缀元素不属于 EA XSD 模型；
-   - `isXsdAttributeName`：EA XSD 属性不带命名空间前缀，带前缀（`xai:`、`xi:`、
-     `xlink:`、`xml:`、`xsi:`、`xmlns:*`）的都是命名空间机制，不做 schema 校验。
-2. `diagnostics`：`xi:` 前缀元素整体跳过 schema 校验（元素与属性都不再误报）；
-   前缀属性名统一跳过。
-3. `hover`：`xi:include` 元素/属性给出 XInclude 说明；`href` 值悬停像
-   `<Include source>` 一样解析目标文件（Ctrl+点击跳转此前已可用）。
-
-### 验证
-
-- 真实文件全量扫描：0 未知元素、0 未知属性（修复前 `href`/`xpointer` 两条必现）；
-- 新增测试：`isXsdElementName` / `isXsdAttributeName` 断言；`xi:include` 解析类型为
-  null 且不参与校验；全量 39/39 通过。
-
-### 后续（架构方向，待确认）
-
-用户提出“先展开 `xi:include`（类比 C++ 宏展开），再处理 mod XML 解析”。该方向与第二轮
-遗留的“虚拟合并”开放项一致，设计要点：
-
-- 构建**逻辑树**而非文本拼接：把目标文件选中内容（`xpointer` 子集）作为子节点拼入父
-  元素，节点保留源文件与原始偏移，避免文本级拼接导致的偏移断裂；
-- 展开范围：`xi:include` 与 EA `<Include type="all">`（内容合并）；`instance` /
-  `reference` 是可见性 / 编译产物语义，不拼树；`inheritFrom` + `joinAction` 是属性级
-  继承合并，不是宏展开；
-- 收益：跨 include 的上下文类型解析、包含内容的结构校验、以及后续“GameObject 内模块
-  id 局部作用域”（HeadlightDraw2 的模块也是该 GameObject 的模块）；
-- 风险：include 环 / 深度限制、大文件性能、`xpointer` 仅支持现有子集形式
-  （`/n:Name/child::*`）。
-
----
-
 ## 十、问题分析（第五轮，2026-08-01）：`xi:include` 的 `href` / `xpointer` 被误报为未知属性
 
 ### 问题
@@ -974,7 +911,8 @@ stale=true 并触发 follow-up。处理（按用户建议的扩展名白名单
 
 - w3x 文件名启发式定向扫描（按约定后续再做）。
 - `AssetIdList` 等“任意资产 ID 列表”的引用语义建模。
-- Find All References 目前仍是全文搜索，未走索引（对应需求 P1 高效搜索）。
+- Find All References 已改为语义引用索引（第十八轮，2026-08-05，见
+  `docs/features-reference-counts.md`）；通用内容搜索与索引复用仍属 P1 远期。
 
 ---
 
@@ -1509,3 +1447,514 @@ XSD 模型中共 **371 处“子元素是 simple type”的声明（149 个不
 若 Corona 上“输入 C 后菜单出现慢”仍然明显，下一个瓶颈大概率是
 `getScope()` 每次文档版本变化都重建完整局部 include 链 / 逻辑树；本轮先把
 候选截断与类型过滤造成的“列表错误”修掉，局部 scope 缓存优化留作独立一轮。
+
+---
+
+## 二十三、问题分析（2026-08-05）：FAR 把定义行算作“自引用”；CodeLens 漏掉 manifest 源引用
+
+### 问题 1：Find All References 把 id 定义行也算进结果
+
+**现象**：对任意资产执行 FAR，结果里包含它自己的 `id="..."` 定义行，看起来
+像“自己引用自己”；CodeLens 计数没有这个问题。
+
+**根因**：VS Code 的 FAR 默认带 `context.includeDeclaration = true`，旧实现
+把定义位置附加进返回结果。语义反向索引本身不含 id 定义点（records 提取时
+已排除），CodeLens 只读反向索引，所以两者不一致。
+
+**修复**：`findReferenceLocations` 不再附加定义位置，无论 `includeDeclaration`
+取值；FAR 结果与 CodeLens 计数严格一致。
+
+### 问题 2：CodeLens 不显示 manifest 定义的引用，FAR 却显示
+
+**现象**：打开 SageXml 原版源码时，CodeLens 显示 0 引用，但从该资产执行
+FAR 能看到引用。
+
+**根因**：反向索引的站点挂在“实际解析到的定义”上。当 SageXml 源码不在
+include 遍历里时，引用只解析到 manifest 定义（如 `static.manifest` 条目），
+站点挂在 manifest key；CodeLens 用“当前文档定义 key”精确查表所以是 0，
+FAR 把同 id/同类型的 manifest 定义也合并进来所以能看到。
+
+**修复**：新增 `referenceSitesForDefinition`：除了精确 key，还把
+`manifestSource` 可解析到当前打开文件的 manifest 定义的站点并入计数——
+语义上把“manifest 引用”视作“SageXml 源码对该 asset 的引用”
+（Go to Definition 本来就会把 manifest 定义映射到 SageXml 源码）。
+
+**验证**：AttachTest 中 326 个带引用的 manifest 定义此前全部没有对应
+`origin: "sdk"` 定义（源码未遍历），现在打开对应 SageXml 源码即可看到计数
+（如 `PlayerTemplate Allies` → 8 引用）。
+
+### 举一反三的测试（146 → 147 全绿）
+
+- `referenceProvider.test.mjs`：FAR 即使 `includeDeclaration = true` 也不返回
+  定义行；从引用位置发起 FAR 结果一致；
+- `referenceIndex.test.mjs`：`referenceSitesForDefinition` 把 manifest 源
+  站点并入 SageXml 源码定义，其他文件不串；
+- `codeLens.test.mjs`：打开 manifestSource 对应的源码文件时，CodeLens 显示
+  manifest 定义上挂着的引用数。
+
+版本 **0.1.16 → 0.1.17**。
+
+---
+
+## 二十四、问题分析（2026-08-06）：引用索引与 records 缓存不同步 / 竞争
+
+### 现象
+
+Corona `Data/GlobalData/Weapon/Weapon_Allied.xml` 中的
+`AlliedCommandoDesertEaglesWarhead`（一个 WeaponTemplate）偶尔没有 CodeLens，
+FAR 显示无引用；它实际被同文件 WeaponTemplate 的 `ProjectileNugget
+WarheadTemplate="..."` 引用。该问题在移动硬盘重连 + 重新打开工作区 + 校验
+磁盘缓存 + 重新 indexing 之后出现；在 ProjectileNugget 里 Ctrl+点击一次后恢复；
+清缓存重载不复发。
+
+### 调查
+
+1. **模型核对**：`AlliedCommandoDesertEaglesWarhead` 的元素是
+   `<WeaponTemplate>`，`ProjectileNuggetType@WarheadTemplate` 的 refType 是
+   `WeaponTemplate`，语义匹配成立。
+2. **真实文件验证**：直接对 Weapon_Allied.xml 做 records 提取 + 反向索引，
+   引用记录（line 1332）能正确挂到定义（line 1341）——**新鲜构建没有问题**。
+3. 因此问题不在提取/过滤逻辑，而在“引用索引与索引状态不同步”的缓存/竞争
+   路径。
+
+### 找到的不同步 / 竞争点
+
+- **`buildReferences()` 读共享 recordsCache**（workspace 持有、跨重建复用），
+  而不是 walk 实际消费的 records：
+  - 外部盘重连 / 旧磁盘缓存条目“stat 全匹配但内容过时”（FAT32/exFAT 时间戳
+    粒度 2s、同步工具保留 mtime、size 不变）→ 资产用旧 records 入库，而新
+    引用缺失；watcher 事件在重连期间丢失时快照不会标 stale → 持久化问题；
+  - 构建中途 watcher 失效、或 feature `readDom` 重写 recordsCache，都可能让
+    快照的 references 与 assets 来自不同版本的 records。
+- **feature 在构建中调用 `readDom`**（定义跳转的精确定位）会改写同一个
+  indexer 的 `files` / `recordsCache`，污染进行中的构建。
+- **force 重建（Re-index）之前只比 stat 信号**：stat 相同但内容不同的陈旧
+  条目会被直接复用，只有清缓存才能修复。
+
+### 修复
+
+1. **构建期本地 records**：`ModIndexer.buildRecords` 记录本次 walk 实际消费的
+   `{ file, records, recordsHash }`，`buildReferences()` 只从这里构建反向索引。
+   中途失效 / feature 重读不再造成“资产在但引用缺失”。
+2. **构建期 readDom 闸门**：`assetDefLocation` 在 `ws.isBuilding` 时退化为
+   行级位置，避免定义跳转改写进行中的构建。
+3. **force 重建内容校验**：full XML 的 records 缓存条目带 `contentHash`；
+   `Re-index workspace` 对 stat 匹配的条目也读文件比对哈希，不一致才重解析
+   （w3x 浅扫描不读，保持 2.6 GB 免读）。
+4. **打开文档自愈**：快照发布每文件 `recordsHashes`；CodeLens / FAR 对**已保存**
+   文档比较当前文本的 records 哈希，不一致则定向 `invalidate` +
+   `scheduleRebuild("records-desync")`。records 哈希忽略行尾/空白差异，
+   未保存编辑不触发，避免误报和循环。
+5. **磁盘缓存 v2 → v3**：旧缓存没有哈希、无法校验/自愈，一次性重建后每文件
+   都带哈希。
+
+### 验证（147 → 151 全绿）
+
+- 构建中途 invalidate 某文件的 recordsCache，最终快照仍保留该文件的引用；
+- force 重建：stat 全匹配但 contentHash 不同的条目被重新解析（trusted 路径
+  仍复用缓存不读盘）；
+- 自愈：records 哈希不一致时只对干净文件触发 invalidate + records-desync；
+- CodeLens 集成：打开文档与快照不同步时调度定向重建。
+
+“Ctrl+点击后恢复”的精确时序无法在代码里复现；最可能是跳转前后恰好发生了一
+次重建（watcher 事件 / dirty-followup）。自愈检查让这类问题不再依赖巧合：
+只要文件被打开并触发 CodeLens / FAR，不一致就会被检测并定向修复。
+
+版本 **0.1.17 → 0.1.18**。
+
+---
+
+## 二十五、问题分析（2026-08-07）：属性补全换行误判与补全项重复
+
+### 现象
+
+1. 属性名补全的“自动换行”在属性已经位于自己单独一行时仍会再插一个换行：
+   例如在 one-per-line 标签中间插入新属性（光标行已有半截属性名，后面还有
+   其他属性）时，接受补全会多出一个空行。正确规则是：只有“同一行上的第二个
+   属性”才换行；光标已经在自己单独一行时不应换行。
+2. 属性值补全出现两条完全相同的值，例如 `ProjectileNugget@WarheadTemplate`
+   中 `AlliedCommandoDesertEaglesWarhead` 出现两遍。
+
+### 根因
+
+1. `attributeInsertLayout` 判断“是否已在新行”时用的是标签内**最后一个完整
+   属性**的结束位置，而没考虑它是否位于光标之前。在 one-per-line 标签中间
+   插入时，光标后面的属性会让 `alreadyOnNewLine` 误判为 false，于是再次插入
+   `\n`。同理，在第一个属性之前的新行上补全也会因“面前没有完整属性”而误换行。
+2. `assetIdItems` 只按 `(类型, id, 文件, 行)` 去重。同一个 ID 可以同时出现在
+   当前文档局部 overlay（未保存文本的行号与磁盘不同）与全局索引中，也可以
+   同时出现在项目 XML 与编译 manifest 中——不同文件/行号不会被去重，于是同一
+   个值出现两条。
+
+### 修复
+
+1. **换行判定只看光标之前的属性**：`attributeInsertLayout` 先过滤出结束位置
+   在光标之前的完整属性，再判断光标是否与它们同处一行；没有前置属性时，用
+   元素名与光标之间是否有换行判断是否已在自己一行。已在新行时不再插入换行，
+   one-per-line 风格下仍用规范缩进替换当前行空白；同一行第二个属性仍按原有
+   规则换行；元素名同一行补首个属性时（文件为 one-per-line）仍保留换行行为。
+2. **值补全按 id 去重**：`assetIdItems` 改为先按 `(类型, id, 文件, 行)` 去掉
+   同一份定义，再按 id（大小写不敏感）合并为一个补全项，保留分数最高的定义
+   （local > project > sdk/manifest），其余定义在文档说明中列出
+   （“Also defined as …”）。`defineItems` 同步改为按 define 名去重，局部定义
+   优先。
+
+### 验证（169 → 173 全绿）
+
+- one-per-line 标签中间插入：不再插入换行，range 覆盖当前行空白与半截属性名；
+- 第一个属性之前的新行补全：不换行，按规范缩进对齐；
+- 元素名同一行补首个属性（one-per-line 文件）：仍换行；
+- 同一 ID 同时存在于局部 overlay / 全局索引 / manifest：只出现一个补全项，
+  文档中列出其它定义位置。
+
+版本 **0.1.19 → 0.1.20**。
+
+---
+
+## 二十六、问题分析（2026-08-08）：磁盘缓存校验阻塞与日志可观测性
+
+### 现象
+
+清缓存 / 冷启动时“validating cache”耗时很长，但输出通道只有构建开始和结束
+两行，看不到校验花了多久；构建日志显示 `done in 1.6s`、索引已完整，但 VS Code
+状态栏仍停留在“indexing”。
+
+### 根因
+
+1. `seedRecordsFromDisk` 在构建前 `await loadValidated()`，对全部 8,976 条缓存
+   记录逐文件 stat（机械盘可达数十秒），且这段耗时没有任何日志；构建计时从
+   `runBuild` 才开始，日志里自然看不到。
+2. `publishIndex` 发布最终快照时 `state.building` 仍为 true，`updateStatusBar()`
+   只会显示“indexing…”；`finally` 把 `building` 置 false 后没有再次刷新状态栏，
+   于是状态栏一直停在 indexing。
+
+### 修复
+
+1. **校验仍是快速构建的前置条件**：`DiskRecordsCache` 拆为 `load()`（读 +
+   gunzip + JSON，快）与 `validate()`（逐文件 stat）。冷启动**先校验后构建**：
+   只有 stat 与当前磁盘一致的记录才播种进共享 recordsCache，过期条目在构建时
+   重新读取。曾尝试“先快速构建、构建后后台校验”，但快速路径
+   （`trustUnchanged=true`）会直接信任未校验的 recordsCache 条目，可能发布
+   过期 index；后台校验只能事后发现 stat 可见的变化，stat 不可见变化（同
+   size/mtime/ctime 的重写）无法事后发现。同时并发校验会与索引器抢机械盘
+   I/O，实测把信任构建从 1.6s 拖到 25s（walk 17s / candidates 6.3s），因此
+   该方案已放弃，恢复“校验通过才允许快速构建”的不变量。
+
+   进一步优化为**分阶段校验**：full XML 记录先校验（约一半，~15s），构建随即
+   开始并发布 phase A；shallow 美术记录先以 `validated:false` 预播种，phase A
+   的 `readDocument` 只把它当“待扫描登记”用（不消费记录、不 stat 2.6GB 模型），
+   在 phase A 发布回调里校验并标记 `validated:true`，phase B 直接命中缓存。
+   结果：phase A 可用时间从 ~34s 降到 ~16s，最终完成时间基本不变，正确性不变。
+
+2. **校验进度可视化**：`validate()` 增加 `onProgress` 回调，状态栏显示
+   `validating cache N/M…` / `validating art cache N/M…`，输出通道每校验
+   1000 条输出一行进度，避免长时间无反馈。
+3. **日志补齐计时**：新增 `[disk-cache] loaded … in Xs`、
+   `[disk-cache] validated … in Xs (dropped=N)`、`[disk-cache] saved … in Xs`
+   以及 `[build] wall time …`（含缓存加载的总耗时）；`DiskCacheLoadStats`
+   增加 `loadMs` / `validateMs`，cacheReport 与状态栏 tooltip 一并展示；
+   输出通道所有日志行统一自动加本地 `HH:mm:ss.mmm` 时间戳，方便对照
+   watcher / build / disk-cache 事件的先后顺序。
+4. **状态栏修复**：`finally` 中 `building = false` 后调用 `updateStatusBar()`，
+   构建完成后不再卡在 indexing；校验阶段状态栏直接显示
+   `validating cache…` / `validating art cache…` 及计数。
+
+### 验证（173 → 176 全绿）
+
+- `load()` 不做 stat 校验，`validate()` 返回 `kept` / `invalidKeys` 与
+  validated / dropped / validateMs 统计，`onProgress` 单调递增到总数；
+- 变更 / 缺失条目被报告并触发重建，有效条目保留；
+- 未校验的 shallow 条目在 phase A 只登记不消费，phase B stat 校验后命中缓存
+  不再重扫；
+- 全量 176 个测试通过，esbuild 产物已更新。
+
+---
+
+## 二十七、问题分析（2026-08-10）：CodeLens 与 FAR 定义合并路径不一致
+
+### 现象
+
+Corona 项目中 `WeaponTemplate` 不再显示 CodeLens 引用计数（或显示 0），但
+右键菜单 Find All References 仍能查到引用。
+
+### 根因
+
+CodeLens 只查“全局 index 中当前文件这一条定义”的引用桶
+（`referenceSitesForDefinition`），而 FAR 会把**当前文档的 local overlay** 与
+全局同名定义合并后再收集引用（`definitionsForReference` +
+`collectReferenceSites`）。当文件未进全局 include 流（standalone / 片段文件）
+或定义只存在于 local overlay 时，FAR 能通过全局同名定义找到引用，CodeLens
+却按本地文件 key 精确查表得到 0/空，表现就是“FAR 可用、CodeLens 消失”。
+
+### 修复
+
+1. `Ra3CodeLensProvider` 改为 async，通过 `ws.getCodeLensScope(document)` 取
+   merged index（当前文档 local overlay + 全局 index），并用与 FAR 相同的
+   `definitionsForReference` + `collectReferenceSites` 计算计数；
+2. `showReferencesForDef`（点击 lens 打开的 references peek）同步改为同一
+   逻辑，保证显示的数字与打开的 peek 严格一致；
+3. CodeLens 的 records-desync 自愈改用 `recordsSyncSurfaceFor(document)`，
+   与 FAR 一样按文档所属项目定向修复，而不是活动项目。
+
+### 刷新体验与 0 显示
+
+- CodeLens 使用轻量 `getCodeLensScope`（只解析当前文档 + 挂全局 index，不
+  展开 include 链），快照发布后的 `editor.action.codeLens.refresh` 即时返回
+  新计数；
+- Provider 实现 `onDidChangeCodeLenses` 事件，`onIndexUpdate` 在每次快照
+  发布时主动 fire，VS Code 立即重新查询（不依赖 refresh 命令是否生效）；
+- **全局重试定时器**：`onBuildStart` 启动一个 2s 间隔的定时器，只要
+  `ws.isBuilding()` 为 true 就重新 fire CodeLens 刷新；构建结束即停止。
+  用于兜底 VS Code 对单次 refresh 事件的合并/延迟，保证 phase A 的计数
+  不会等到 final 才上屏。定时器为全局单实例、仅构建期存在，不随文档数
+  放大；
+- 日志：每次快照发布记录 `[codelens] refresh (project/phase/assets/...)`；
+  首个快照前每个文档只记一次 `[codelens] suppressed`；scope 异常和超过
+  250ms 的慢 provider 调用也会记录。refresh 事件频率等于快照发布次数
+  （低频），不会按每次 VS Code 查询记录，避免大项目刷屏；
+- 在**第一个全局快照发布前**（`stats.indexedFiles === 0` 的本地-only index）
+  不渲染任何 CodeLens，避免冷启动期间满屏误导性的 0 references；
+- 一旦存在真实快照，“0 references”仍按设计显示（参考目标类型 0 也显示，
+  点击可打开空 peek 作为“未引用”信号）。
+
+### 重新评估（2026-08-10）
+
+- **与 FAR 的一致性**：CodeLens 只渲染当前文档的顶层资产，cheap scope 的
+  overlay 已覆盖这些资产；反向索引的引用站点挂在**每个匹配定义**上，因此
+  当前文档定义 + 全局同名定义的并集与 FAR 的 full-scope 并集在计数上一致。
+  仅存在于 include 链、且不在全局 index 中的定义没有反向引用桶，full scope
+  也不会多出站点，故不构成计数差异。
+- **0 显示语义**：按文档需求“参考目标类型 0 也显示”，隐藏逻辑收窄为
+  “尚无全局快照”，避免小项目 phase A 后仍被隐藏。
+- **已知边界**：CodeLens 计数与“从该 id 发起 FAR”完全一致，因此同名 id
+  跨类型时会把各类型定义的反向站点合并计数——这是 FAR 既有语义，CodeLens
+  与其保持一致，不再按类型收窄。
+
+### 验证（175 → 178 全绿）
+
+- CodeLens 与 FAR 共享定义合并路径后，standalone 文件中 WeaponTemplate
+  的计数与 FAR 结果一致；
+- 点击 lens 打开的 peek 与计数一致；
+- 尚无全局快照时不渲染 CodeLens，快照存在后 0 references 仍显示；
+- `onDidChangeCodeLenses` 在 refresh 时触发；测试 shim 不再提供
+  `indexForDocument`/`activeIndex`，若实现回退到旧的 index 查找方式会直接
+  测试失败；
+- 原有 manifest 源引用归并、0 引用显示、desync 自愈测试全部保持。
+
+---
+
+## 二十八、问题分析（2026-08-10）：manifest 源地址被 mod 同名 DATA 路径遮蔽
+
+### 现象
+
+Corona `Data\Allied\Units\AlliedCommandoTech1.xml` 中
+`Template="AlliedCommandoDesertEagles"` 的 Ctrl+点击有两个候选：
+
+- mod 定义：正常；
+- 原版 manifest 定义：`manifestSource` 是 `DATA:globaldata/weapon.xml`，
+  但它没有跳到 `SageXml\globaldata\weapon.xml`，而是打开 mod 自己的
+  `Data\globaldata\weapon.xml`（915 字节的 Include 汇总文件，不含该 id）。
+
+### 根因
+
+`manifestSource` 记录的是**原版 manifest 编译时该资产的源地址**，不是
+“当前 mod 按 BAB Include 规则会命中哪个文件”。旧代码在
+`src/features/navigation.ts` 的 `assetDefLocation()` 里用
+`resolveSource(src, null, searchPathsFor(idx))` 解析它，而
+`searchPathsFor(idx)` 是当前项目的 BAB 搜索顺序——项目 `Data` 在
+`SageXml` 之前。于是只要 mod 同名遮蔽了 `DATA:globaldata/weapon.xml`，
+manifest 候选就会被劫持到 mod 文件。
+
+同一语义混淆也存在于 `src/indexer/referenceIndex.ts` 的
+`referenceSitesForDefinition()`：它用当前项目搜索路径判断 manifest 定义
+是否对应某个源码文件，同样会被遮蔽路径带偏。
+
+### 实测证据
+
+- `static.manifest` 中确有
+  `WeaponTemplate:AlliedCommandoDesertEagles`，
+  `sourceFileName = "DATA:globaldata/weapon.xml"`；
+- `Data\globaldata\weapon.xml`（mod）与
+  `SageXml\globaldata\weapon.xml`（原版）都存在，后者 277 KB，
+  该 id 在第 1093 行；
+- 当前 BAB 顺序解析返回 mod 文件；只按 `[SDK根, SDK\SageXml]` 解析则返回
+  `SageXml\globaldata\weapon.xml`；
+- 对 `static.manifest` 全部 DATA 源扫描：1874 个都存在于 `SageXml`，
+  其中 172 个被 Corona `Data` 同名遮蔽。说明这是普遍现象，不是个别文件。
+
+### 修复
+
+1. `src/indexer/includeResolver.ts` 新增 `buildVanillaSearchPaths(sdkDir)`：
+   DATA 只搜 `[SDK根, SDK\SageXml]`，ART / AUDIO 同理只搜 SDK 目录
+   （当前 SDK 基本没有 art/audio 源码，保持“找不到就 manifest-only”）。
+2. `src/features/navigation.ts` 的 manifest 定义跳转改用 vanilla-only 路径；
+   普通 `<Include>` / `xi:include` 仍使用当前项目 BAB 顺序，不受影响。
+3. `src/indexer/referenceIndex.ts` 的 manifest 源归并同步改用 vanilla-only
+   路径，避免把 manifest 引用错误归并到 mod 同名文件。
+4. 边界处理：
+   - `SageXml` 源文件缺失（用户删除/改名）：manifest 候选保持
+     manifest-only，不跳到 mod 遮蔽文件；
+   - 源文件存在但 id 已被移除（用户修改 SageXml）：跳到该文件顶部，
+     不做虚假的精确定位；
+   - 只要 `SageXml` 中仍有该 id，就精确跳转（与既有问题 C 的行为一致）。
+   - 当前实现不读取 `ra3modxml.indexSageXml`：manifest 导航始终尝试解析
+     SageXml 源码（这只影响“跳到哪里”，不影响是否把 SageXml 纳入索引）；
+     如需让导航也跟随该设置，可后续加开关。
+
+### 测试（178 → 184 全绿）
+
+- `includeResolver.test.mjs`：`buildVanillaSearchPaths` 结构断言；mod 同名
+  遮蔽时普通 BAB 解析命中 mod、vanilla-only 命中 SageXml；vanilla 源缺失时
+  即使 mod 遮蔽也返回 null；
+- `referenceIndex.test.mjs`：manifest 源归并只命中 SageXml 文件，同名 mod
+  文件不继承引用站点；
+- `contentFeatures.test.mjs`：Ctrl+点击 manifest 定义命中 SageXml 而非 mod
+  遮蔽文件；SageXml 源缺失时不跳 mod；文件存在但 id 被删时降到文件顶部。
+
+> 备注：ART/AUDIO 源映射按用户意见不作为本轮目标；`buildVanillaSearchPaths`
+> 已包含对应 SDK 目录，将来若有源码可直接复用。
+
+---
+
+## 二十九、问题分析（2026-08-11）：manifest 同名不同类型资产被 `assetsById` 去重丢弃
+
+### 现象
+
+Corona `Data\Allied\Units\AlliedMCV.xml` 的
+`ScriptedModelDraw → ModelConditionState → Model Name="AUMCV_Hover"`
+报 unresolved-reference：
+
+```xml
+<ScriptedModelDraw id="ModuleTag_Draw_Hover" OkToChangeModelColor="true">
+  <ModelConditionState ParseCondStateType="PARSE_DEFAULT">
+    <Model Name="AUMCV_Hover" />
+  </ModelConditionState>
+</ScriptedModelDraw>
+```
+
+提示为“没有类型为 `BaseRenderAssetType` 的定义（其他类型存在同名 id）”，
+但 `Static.manifest` 中确实存在 `W3DContainer:AUMCV_HOVER`。
+
+### 根因
+
+`src/indexer/indexer.ts` 的 `addAsset()` 在维护两个索引时用了同一套去重：
+
+- `assets`：`类型 -> id -> 定义`，按 `(file, line)` 去重；
+- `assetsById`：`id -> 所有类型定义`，也按 `(file, line)` 去重。
+
+XML 定义的行号各不相同，所以 `(file, line)` 足够；但 manifest 资产入库时
+`line` 固定为 0，于是同一个 manifest 里 id 相同、类型不同的多个资产会被
+当成同一条定义，只保留最先出现的类型。
+
+`Static.manifest` 中 `AUMCV_HOVER` 的实际顺序是：
+
+```text
+W3DHierarchy:AUMCV_HOVER
+W3DAnimation:AUMCV_HOVER
+W3DContainer:AUMCV_HOVER
+```
+
+`W3DContainer` 因此被 `W3DHierarchy` 挤掉。`Model@Name` 的 `refType` 是
+`BaseRenderAssetType`，`W3DHierarchy` 按 XSD 继承链不是渲染资产，所以
+`assetsById` 里“有同名 id”但“没有匹配类型”，正好产生上述提示。
+
+### 为什么以前没暴露 / 不是回归
+
+第三轮修复的 `AUAntiVehicleVehicleTech1_SKN` 在 static.manifest 里只有一个
+同名定义（`W3DContainer`），没有类型竞争，因此当时测不到该分支。git blame
+显示 `addAsset` 的 `(file, line)` 去重从首个提交就存在，所以这是潜在缺陷被
+新数据形态首次触发，不是近期改动造成的回归。
+
+### 影响面（真实 manifest 扫描）
+
+对 `Static / Global / Audio` 三个 manifest 模拟当前入库逻辑：
+
+| 指标 | 数值 |
+|---|---:|
+| 同名 id 跨类型的 ID | 1318 |
+| 被丢弃的类型定义 | 1470 |
+| `W3DContainer` / `W3DMesh` 被丢弃的 id | 412 |
+
+`Audio.manifest` 无此类碰撞。受影响的不止诊断和 hover：
+`resolveReferenceTargetsForType`、语义 FAR / CodeLens 引用计数、未类型化补全
+都经 `assetsById` 查找，因此 manifest 中的模型引用普遍可能误报或漏计。
+
+### 修复
+
+`assetsById` 是“按 id 汇总所有类型定义”的索引，去重身份必须包含类型：
+
+1. `src/indexer/indexer.ts` 的 `addAsset()`：`assets` 与 `assetsById` 的去重
+   都改为 `(type, file, line)`；
+2. `src/indexer/localScope.ts` 的 `addAsset()`：同样的去重修正，避免局部
+   overlay 未来遇到同构数据时重复踩坑。
+
+`mergeLocalAndGlobalDefs`、`assetDefKey` 本来已按 `(type, id, file, line)`
+区分定义，修复后三处语义一致。
+
+### 测试（新增 1 个集成测试，全量 198 个通过）
+
+`test/indexer.test.mjs` 新增自包含用例：
+
+- 用最小 version-5 manifest 构造 `W3DHierarchy / W3DAnimation / W3DContainer`
+  三个同 id 资产，顺序刻意让渲染类型排在最后；
+- 再构造 `Texture:ABAirfield` 在前、`W3DContainer:ABAIRFIELD` 在后的常见形态；
+- 断言 `assetsById` 保留全部类型；
+- 断言 `Model@Name` 经 `resolveReferenceTargetsForType` 命中 `W3DContainer`；
+- 断言反向引用索引把该引用记到 `W3DContainer` 名下。
+
+### 文档同步
+
+`docs/plan.md` 的 manifest 建模小节补充：`assetsById` 必须保留同 id 的不同
+类型定义，去重身份为 `(type, file, line)`。
+
+---
+
+## 二十八、问题分析（2026-08-11）：xi:include 无 xpointer 语义与片段文件诊断（P0）
+
+### 现象
+
+`Data/Includes/GenericCelestialBuildingSuicide.xml` 这类被 `xi:include` 引用的
+片段文件在独立打开时被报一串错误：`DieMuxData` 报 `missing-id`（“顶层资产需要
+id”），wrapper 根不在 XSD 里的文件报 `unknown-element`，引用在完整索引下能解析
+前还会报未解析引用。
+
+### 根因
+
+1. **无 `xpointer` 的展开语义错误**：`expandDocument` 把目标 `root.children`
+   拼进父节点。按 XInclude 语义（也是 Corona 的实际用法），没有 `xpointer` 时应
+   整体包含目标文档的根元素。`GenericCelestialBuildingSuicide.xml` 的根
+   `CreateObjectDie` 本身就是要放进 GameObject 的模块；旧实现会丢掉它，只把
+   `DieMuxData` 拼进去。
+2. **诊断层把片段当完整文档**：`isTopLevel` 假定根一定是 `AssetDeclaration`，
+   于是片段根的子元素被当成顶层资产要求 id；未知 wrapper 根也被当成未知元素。
+3. **引用/define 与上下文耦合**：片段里的引用可能由 include 者（或 include 者
+   的 include 链）提供，独立打开片段时无法可靠判定。
+
+### 修复（P0，不猜测外部上下文）
+
+1. `logicalTree.expandDocument`：无 `xpointer` 时 `handleChild(parse.root)`，
+   整体包含目标根元素；有 `xpointer` 时保持 `/n:Name/child::*` 语义。
+2. `diagnostics` 片段模式：根 localName 不是 `AssetDeclaration` 即为片段。
+   - 一律跳过顶层 `missing-id` / 跨文件重复 id、未解析引用、未定义 `$DEFINE`；
+   - 根是已知 XSD 元素时（如 `CreateObjectDie`），根自身提供类型上下文，整棵子树
+     的未知元素 / 未知属性仍正常校验；
+   - 根不在 XSD 中（wrapper/container，如 `CommonArmorDraws`）时，只报 XML 语法
+     与片段内部 `xi:include` / `<Include>` 目标缺失，其余检查延后到上下文诊断。
+3. 新增 `checkXiInclude`：`xi:include` 目标缺失在 Problems 中上报
+   `include-not-found`（此前只在 indexer 内部诊断）。
+
+### 测试（202 → 202 全绿）
+
+- `localScope.test.mjs`：无 `xpointer` 的 `xi:include` 把目标根元素
+  `CreateObjectDie` 整体拼入 `Behaviors`，`DieMuxData` 仍挂在它下面；
+- `contentFeatures.test.mjs`：片段已知根不再报 `missing-id` / 未解析引用，但子树
+  未知属性仍报；未知 wrapper 根不报元素/属性，片段内部缺失 `xi:include` 仍报；
+  完整 `AssetDeclaration` 文档的顶层 id 检查不受影响。
+
+### 边界与后续
+
+- **P1 上下文诊断**：indexer 增加“反向 include 表”（`xi:include` 目标 →
+  include 者列表），打开片段时用 include 者的逻辑树做真实上下文校验，再恢复引用 /
+  define / 子元素结构检查。多上下文取并集去重。
+- `<Include type="all|instance|reference">` 与 `xi:include` 语义不同：前者的目标
+  是完整 `AssetDeclaration`，不进入片段模式；后者才允许片段文件。

docs/features-reference-counts.md

@@ -0,0 +1,123 @@
+# 功能设计：引用计数、语义 Find All References 与未引用资产
+
+> 状态：已实现（v0.1.16 起）。本文档记录需求分析结论、语义定义、数据流与
+> 已知边界；问题排查记录仍放在 `docs/analysis-issues.md`，功能设计单独成文。
+
+## 一、需求与结论
+
+原始需求：
+
+1. 在每个顶部 asset 上显示它被引用了多少次，点击后直接打开“查找所有引用”，
+   而不是必须通过右键菜单；
+2. 能查找“某一种类型中所有没被引用的顶部 asset”。
+
+调研结论（2026-08-05）：
+
+- XSD 模型层面，292 个有模型类型的顶层资产中：73 个有类型化引用指向它们，
+  28 个只能被 `inheritFrom` 指向，**191 个在模型里根本没有任何引用指向**
+  （设置类、地图元数据、w3x 子结构等）。对这些类型，“0 引用”是唯一正常状态。
+- AttachTest 实测：625 个项目定义中 29% 是 0 引用、48% 是 1 引用。
+  因此“所有资产一律显示计数”会制造大量噪音，也会让用户误以为资产是孤儿。
+- 结论：**计数按类型过滤**——只在“设计上应该被引用”的类型上显示
+  （0 也显示，因为对 GameObject 这类类型 0 是有效信号）；自动注册/结构类
+  类型不显示。
+- 旧版 Find All References 是全文搜索（正则匹配 `"id"` / `>id<`），会把
+  `id="X"` 定义本身、`EditorName="X"` 等非引用属性也算进去。计数如果和它
+  同源，必然误导；如果不同源，点击后的结果又对不上。因此本轮把 FAR 一起
+  升级为语义引用索引，计数与点击结果共用同一数据源。
+
+## 二、语义定义：什么算一次“引用”
+
+与补全 / hover / 跳转 / 诊断完全一致（`refs.ts` 是唯一判定来源）：
+
+- 带 `xas:refType` 的属性值（如 `CommandSet` → `LogicCommandSet`）；
+- 带 `xas:refType` 的 simple-content 文本（如 `<CreateObject>ID</CreateObject>`）；
+- `inheritFrom`（按元素自身类型过滤）；
+- 无 `refType` 的 `isRef` 属性（按同名 ID 匹配任意声明类型）。
+
+不算引用：
+
+- 元素自己的 `id` 定义点（除非是 `RoadObject@id→Road` 这类跨类型 id 引用）；
+- Poid 管线局部引用（`ModuleId`、`AttachModuleId`、`SoundRef` 等）；
+- `$DEFINE` / `=` 常量值；
+- 枚举、文件路径、`Include@source` / `xi:include href`；
+- w3x 内部父子结构关系（`W3DMesh` 等靠结构归属，不走全局引用）。
+
+引用索引按“类型 + id + 定义位置”精确归属，同名 ID 的不同类型定义互不串扰
+（`WeaponTemplate:X` 的引用不会计到 `GameObject:X` 头上）。
+
+## 三、数据流
+
+```
+parse DOM
+   │  records.ts  extractIndexRecords(parse, lineMap, text)
+   ▼
+IndexRecords.references[]       每文件紧凑记录（refType / selfType / value /
+   │                            行号 / 起止偏移），随 records 缓存跨重建复用，
+   │                            并持久化到磁盘缓存（缓存版本 v3，full XML
+   │                            附带内容哈希；快照另发布每文件 records 哈希）
+   ▼
+indexer.ts  buildReferences()   只解算本次 build 触及的文件，防止陈旧缓存泄漏
+   │  referenceIndex.ts  buildReferenceIndex()
+   ▼
+ModIndex.references             Map<定义 key, ReferenceSite[]>
+   ├── CodeLens 计数（O(1) 查表）
+   ├── 语义 Find All References（返回精确位置）
+   └── 未引用资产报告（0 引用 = 不在反向索引中）
+```
+
+引用记录在解析期就把 `refType` / `selfType` 固化下来，反向索引构建时不需要
+再解析 DOM、也不需要上下文类型解析；只需对 `assetsById` 做一次查找并按类型
+过滤。快照发布时（XML 阶段 + art 阶段）各构建一次反向索引，Corona 规模下
+开销远小于 include 遍历。
+
+反向索引只从**本次构建的 walk 实际消费的 records**（`ModIndexer.buildRecords`）
+构建，不读共享 recordsCache：中途 watcher 失效、或 feature 通过 `readDom`
+重读文件，都不会让“资产在但引用缺失”的快照出现。打开文档时 CodeLens / FAR
+还会比较当前文本的 records 哈希与快照，不一致就定向 invalidate 并触发
+`records-desync` 重建自愈（仅对已保存文档，未保存编辑不触发）。
+
+## 四、CodeLens 规则
+
+- 只对根级（`AssetDeclaration` 直接子元素）带 `id` 的资产显示；
+- 只对 `isReferenceTargetType()` 为真的类型显示（类型化引用目标 +
+  `inheritFrom` 可继承类型；见 `refs.ts` 的 `referenceTargetTypes()`）；
+- 0 也显示：`0 references` / `1 reference` / `N references`；
+- 点击执行 `ra3modxml.showReferences` → `editor.action.showReferences`
+  打开 references peek，结果与计数完全一致（不含定义本身）；
+- 计数除了当前定义自己的反向索引桶，还并入“manifestSource 可解析到当前
+  文件”的 manifest 定义桶：`manifestSource` 按 vanilla-only 搜索路径
+  （SDK 根 + `SageXml`）解析，mod 同名 DATA 路径不会被视为源码；manifest
+  资产有对应 SageXml 源码时，引用直接视作 SageXml 源码对该 asset 的引用
+  （Go to Definition 同样把 manifest 定义映射到 SageXml 源码）；
+- 索引重建完成后自动 `editor.action.codeLens.refresh`，计数不会停留在旧值。
+
+## 五、未引用资产
+
+- 主入口：命令面板 `RA3 Mod XML: Find unreferenced assets…`
+  第一步 QuickPick 选类型（只列“设计上应被引用”的类型，显示每种未引用数量），
+  第二步列出资产（`id — 相对路径:行号`），点击跳转到定义；
+- 加速入口：编辑器右键菜单
+  `RA3 Mod XML: Find unreferenced assets of this type`
+  （仅 `editorLangId == xml && ra3modxml.active` 时显示），光标在顶部资产上
+  时直接预选该类型，否则回退到类型选择；
+- 语义：只统计 `origin === "project"` 且非 `viaInstance` 的定义；
+  manifest / SDK 定义永远不参与；如果某个 id 覆盖了原版资产，来自原版/其他
+  流的引用同样计入（否则会把覆盖件误报成未使用）。
+
+## 六、已知边界与后续
+
+- 当前文档局部作用域（不在任何全局流里的文件）的引用不在全局反向索引中：
+  这类文件打开后 CodeLens / FAR 只反映全局流；局部链内的引用暂不计数。
+- Find All References 不返回定义行本身（即使 VS Code 传入
+  `includeDeclaration`），因此结果数量与 CodeLens 计数严格一致。
+- `AssetIdList` 等“任意资产 ID 列表”的引用语义仍未建模：整个属性值按一条
+  引用记录处理，与现有补全/诊断保持一致（已知缺口，后续可在 records 层扩展）。
+- w3x 文件本身不提取引用记录（浅扫描无 DOM）；对 w3x 资产的引用从引用它的
+  XML 文件捕获。
+- manifest 二进制里包含 BAB 编译后的完整引用图（`AssetReferenceOffset/Count` +
+  8 字节 `TypeId+InstanceId` 条目），目前仍跳过。将来可解析它给原版/manifest
+  资产提供“编译器权威”计数；mod 源码资产在编译前没有 manifest，仍需源码级
+  引用索引。
+- 未引用资产目前是命令 + QuickPick 的“查询”形态；如果之后想要常驻浏览，
+  可以再加 Tree View（更重，暂不计划）。

docs/plan.md

@@ -1,6 +1,6 @@
 # 调研结论与实施计划（已按最新代码同步更新）
 
-> 说明：本文档随实现演进持续同步。最近一次同步（2026-08-04）对齐了实现过程中新增的模块与设计变更：BAB 精确搜索路径、manifest 类型/ID 推导、上下文感知元素类型、属性级 refType / Poid 局部引用（`id` 定义点）、精确跳转范围、嵌套 `xi:include`、注入式语法高亮、bit-flag 列表补全（空格触发 / 排除已用 / 追加模式）、simple-content 元素文本引用（补全 / hover / 跳转 / 诊断 / Find All References）等。
+> 说明：本文档随实现演进持续同步。最近一次同步（2026-08-11）对齐了实现过程中新增的模块与设计变更：BAB 精确搜索路径、manifest 类型/ID 推导、上下文感知元素类型、属性级 refType / Poid 局部引用（`id` 定义点）、精确跳转范围、嵌套 `xi:include`、注入式语法高亮、bit-flag 列表补全（空格触发 / 排除已用 / 追加模式）、simple-content 元素文本引用（补全 / hover / 跳转 / 诊断 / Find All References）、语义引用索引 / CodeLens 引用计数 / 未引用资产命令、属性补全换行判定与按 id 去重、manifest 源地址按 vanilla-only 解析（避免 mod 同名 DATA 路径遮蔽）、`assetsById` 保留同 id 的不同类型 manifest 定义等。
 
 ## 一、调研结论（带证据）
 
@@ -69,7 +69,10 @@
 ```
 src/
   extension.ts         激活入口（provider 注册、索引调度、诊断调度）
-  workspace.ts         项目检测（Data/Mod.xml / mod.babproj）、索引生命周期、状态栏、重建防抖
+  projectRoot.ts       项目根发现（向上 / 容器向下 / 单文件，Data/Mod.xml、
+                       mapmetadata_*.xml、*.babproj 标记，纯 TS 可单测）
+  workspace.ts         多项目状态（按文档就近选项目、惰性索引、全局串行构建队列、
+                       共享缓存、按项目磁盘缓存、watchers、状态栏、重建防抖）
   settings.ts          配置读取（sdkPath、indexSageXml、definitionMode 等）
   language/
     xmlParser.ts       带源码偏移的轻量 XML 解析器（格式错误定位、容错）
@@ -81,14 +84,16 @@ src/
     schema-model.json  由 tools/xsd-to-model.mjs 生成
     asset-types.json   由 tools/extract-asset-types.mjs 生成（TypeId 哈希→类型名）
   indexer/
-    includeResolver.ts Include 路径解析（纯 TS，BAB /data /art /audio 顺序）
+    includeResolver.ts Include 路径解析（纯 TS，BAB /data /art /audio 顺序）+
+                       manifest 源 vanilla-only 解析（SDK 根 + SageXml）
     existence.ts       文件集存在性快照（目录枚举 Set，替代逐路径 statSync）
     manifestParser.ts  .manifest 二进制解析 + 类型/ID 推导（纯 TS）
     fileScanner.ts     目录遍历缓存 + Include source 候选收集
     refs.ts            引用目标解析（属性 + 元素文本内容，按 refType / isRef /
-                       inheritFrom 过滤，纯 TS）
+                       inheritFrom 过滤，纯 TS）+ “设计上可被引用类型”判定
+    referenceIndex.ts  引用记录 → 反向引用索引（定义 → 引用位置）+ 未引用报告
     shallowScan.ts     大体积美术资产（.w3x 等）顶层浅扫描（纯 TS，不建 DOM）
-    records.ts         每文件紧凑索引记录（资产/Define/Include/xi + 行号）
+    records.ts         每文件紧凑索引记录（资产/Define/Include/xi/引用 + 行号偏移）
     caches.ts          跨重建持久缓存（DocumentCache / IndexRecordsCache /
                        IncludeResolveCache）+ 失效纪元 InvalidationsEpoch
     diskCache.ts       跨会话磁盘缓存（gzip JSON、原子写、多信号 stat 校验）
@@ -99,6 +104,9 @@ src/
     completion.ts      补全 provider（元素/属性/值，上下文感知；xs:list 多值按当前段过滤）
     hover.ts           hover provider
     navigation.ts      定义/引用/文档链接/大纲
+    references.ts      语义 FAR / 引用上下文 / CodeLens 命令共享逻辑
+    codeLens.ts        CodeLens 引用计数（类型过滤，0 也显示，点击开 references peek）
+    unreferenced.ts    未引用资产 QuickPick 命令 + 右键菜单入口
     diagnostics.ts     实时诊断
     semanticTokens.ts  语义 token provider（文档有解析错误时接管着色）
 syntaxes/
@@ -108,21 +116,31 @@ tools/
   extract-asset-types.mjs OpenSAGE AssetType.cs → asset-types.json
 test/
   fixtures/minimod      样例 Mod（include 各种情形、同名 ID、嵌套 xi:include、manifest 回退）
-  *.test.mjs            11 个测试文件（xmlParser / context / completion / semanticTokens /
+  *.test.mjs            16 个测试文件（xmlParser / context / completion / semanticTokens /
                         includeResolver / manifestParser / indexer / schemaModel / refs /
-                        typeContext / manifestTypes）
+                        typeContext / manifestTypes / referenceIndex / codeLens /
+                        referenceProvider / projectRoot / workspaceMulti）
 ```
 
 ### 关键设计决策
 
-1. **语言激活范围**：不劫持 `*.xml`。通过 `workspaceContains:**/Data/Mod.xml`、`**/*.babproj` 激活；语法高亮为**纯注入** grammar（不声明 `language`，避免覆盖内置 XML 语法）。
+1. **语言激活范围与项目检测**：不劫持 `*.xml`。激活条件含 `onLanguage:xml`、
+   `workspaceContains:Mod.xml`、`additionalmaps/mapmetadata_*.xml`、
+   `**/Data/Mod.xml`、`**/Data/additionalmaps/mapmetadata_*.xml`、`**/*.babproj`；
+   语法高亮为**纯注入** grammar（不声明 `language`，避免覆盖内置 XML 语法）。
+   项目根通过 `src/projectRoot.ts` 发现：工作区文件夹向上最多 12 层、容器文件夹
+   向下浅扫最多 3 层（跳过 Data/Art/builtmods/.git 等）、打开的 XML 文件向上，
+   任一 `Data/Mod.xml`、`Data/additionalmaps/mapmetadata_*.xml`、`*.babproj`
+   标记命中即算项目根（大小写不敏感、最近命中者优先）。多项目按文档就近选择：
+   单个项目打开时立即建索引；容器/多项目时惰性建索引（活动文档所属项目先建，
+   其他在文档打开/首次请求时建），构建经全局串行队列避免并发写共享缓存。
 2. **索引范围与默认值**：索引“项目 Data + additionalmaps + 沿 include 可达的 SageXml 原版源码”；SDK 路径默认 `C:\Apps\RA3-MODSDK-X`（可配置）。`reference` include 解析为 `builtmods` 下对应 manifest（惰性解析、按文件缓存），manifest 缺失/无效时回退到占位 XML。
    **美术资产（.w3x）**：`<Include type="all">` / `ART:` 指向的 `.w3x`（及内容嗅探为
    XML 的未知扩展名文件）按其顶层资产入库（`W3DContainer` / `W3DMesh` /
    `W3DHierarchy` / `W3DCollisionBox` 等），使 `Model@Name`、`Hierarchy`、`Mesh`
    等引用可解析；大模型文件**浅扫描**（不建 DOM），结果缓存在 workspace 级、
    跨重建复用（详见设计决策 14）。
-3. **manifest 资产建模**：类型优先用哈希表，未知时从名称前缀推导；可引用 ID 取最后冒号段；类型名统一走大小写规范化（`W3dContainer` ↔ `W3DContainer`），类型匹配严格遵循 XSD 继承链。
+3. **manifest 资产建模**：类型优先用哈希表，未知时从名称前缀推导；可引用 ID 取最后冒号段；类型名统一走大小写规范化（`W3dContainer` ↔ `W3DContainer`），类型匹配严格遵循 XSD 继承链。`assetsById` 按 id 汇总**全部类型**的定义，去重身份为 `(type, file, line)`，同一 manifest 中同名但不同类型的美术资产（如 `W3DHierarchy:AUMCV_HOVER` 与 `W3DContainer:AUMCV_HOVER`）必须全部保留，避免 `Model@Name` 这类 `BaseRenderAssetType` 引用因先到的非渲染类型而被误判为未解析。
 4. **上下文感知元素类型**：同名元素按父元素类型解析（`resolveElementType` 沿解析树逐层 `childTypeOf`，失败回退全局映射），保证 `<Weapon>` 等元素的属性/引用判定正确。
 5. **引用判定与解析**：`refType` 或 `isRef` 均视为引用；带 `refType` 时严格按类型过滤（同名 ID 不串类型）；`inheritFrom` 按可继承类型过滤。**局部作用域例外**（`isLocalReferenceAttribute`）：`id` 是元素自身的定义点——无 refType 或 refType 与自身类型兼容时不检查、不解析（`RoadObject@id→Road` 这类跨类型 id 引用保留检查）；Poid 类型属性是管线局部引用，全局索引无法判定，不检查、不解析。
 6. **重复 ID 诊断**：与 `check_duplicate_ids.py` 一致——SageXml 不参与冲突判定，mod 覆盖原版视为正常。
@@ -251,6 +269,27 @@ test/
     用 `<` 做过滤前缀导致菜单为空——改为保留已输入的 `<`、range 从 `<` 之后
     开始、插入文本不带开括号；`textContentTokenAt` 对未闭合元素用 `el.end`
     作内容边界。
+28. **语义引用索引 + CodeLens 计数 + 未引用资产（第十八轮，2026-08-05）**：
+    - 动机与结论：292 个有模型类型的顶层资产中 191 个在 XSD 中没有任何
+      类型化引用指向（设置/地图元数据/w3x 子结构等自动注册类型），
+      AttachTest 实测 29% 项目定义 0 引用、48% 恰好 1 引用。因此 CodeLens
+      计数只显示在 `isReferenceTargetType()` 为真的类型上（类型化引用目标 +
+      `inheritFrom` 可继承类型），0 也显示；未引用报告默认也只列这些类型。
+    - 数据：`IndexRecords` 增加 `references[]`
+      （`kind / refType / selfType / value / line / start / end`），解析期固化
+      引用上下文，反向索引构建零 DOM、零上下文重解析；`ModIndex.references`
+      为“定义 key → 引用位置”的反向表，快照发布时构建；磁盘缓存版本
+      v1 → v2（`index-records-v2.json.gz`），v3 起附加内容/records 哈希。
+    - FAR 从全文搜索改为语义索引：不再把 `id="X"` 定义行、`EditorName="X"`
+      等非引用属性计为引用；CodeLens 显示的计数与点击打开的 references peek
+      严格一致；`includeDeclaration` 时才附加定义位置。
+    - 未引用资产：命令面板 `Find unreferenced assets…` + 编辑器右键菜单
+      `Find unreferenced assets of this type`；只统计 `origin === "project"`
+      且非 `viaInstance` 的定义；覆盖原版 id 时来自原版/其他流的引用计入。
+    - 边界：局部 scope（不在全局流里的文件）的引用不入全局反向索引；
+      `AssetIdList` 等列表引用按整值记录；w3x 不提取引用记录（对 w3x 资产的
+      引用从引用它的 XML 捕获）；manifest 编译期引用图（AssetReference 缓冲）
+      留作后续。设计文档：`docs/features-reference-counts.md`。
 
 ## 三、实施步骤
 
@@ -308,6 +347,80 @@ test/
     id/define/local/include 候选返回 `isIncomplete` 让 VS Code 随输入重请求；
     当前文档 local 资产优先、候选 top-N 用堆避免全量排序、Include source
     先排序再截断；测试 128 → 136。
+21. [x] 语义引用索引 + CodeLens + 未引用资产（第十八轮，2026-08-05）：
+    records 引用记录提取、`referenceIndex.ts` 反向索引、语义 FAR（替换全文
+    搜索）、CodeLens 引用计数（类型过滤、0 也显示、点击开 references peek）、
+    `findUnreferencedAssets` 命令 + 右键菜单、磁盘缓存 v2；
+    测试 136 → 146；设计文档 `docs/features-reference-counts.md`。
+22. [x] FAR 定义行排除 + manifest 源引用归并（2026-08-05 修复轮）：
+    FAR 不再因 `includeDeclaration` 附加定义行（消除“自引用”观感）；
+    `referenceSitesForDefinition` 把 manifestSource 可解析到当前文件的
+    manifest 定义站点并入 CodeLens 计数（AttachTest 326 个 manifest 定义
+    受益）；测试 146 → 147；版本 0.1.17；分析见
+    `docs/analysis-issues.md` 二十三。
+23. [x] 引用索引与缓存同步加固（2026-08-06）：反向索引改为从**构建期本地
+    records**（`buildRecords`）构建，不再读共享 recordsCache——中途失效、
+    feature `readDom` 重读都不再造成“资产在但引用缺失”；构建中 `readDom`
+    不再被定义跳转调用（避免污染进行中的构建）；force 重建（Re-index）
+    对 stat 匹配的 full XML 做内容哈希校验；打开文档时比较 records 哈希，
+    不一致则定向 invalidate + `records-desync` 重建自愈；磁盘缓存 v2 → v3；
+    测试 147 → 151；分析见 `docs/analysis-issues.md` 二十四。
+24. [x] 多项目支持（2026-08-07）：新增纯模块 `src/projectRoot.ts`（向上 12 层 /
+    容器向下 3 层 / 单文件向上，`Data/Mod.xml`、`mapmetadata_*.xml`、`*.babproj`
+    标记，大小写不敏感、最近优先、跳过 Data/Art/builtmods/.git 等目录）；
+    `ModWorkspace` 改为多项目状态——按文档就近选项目、单项目立即索引 /
+    多项目惰性索引（活动文档所属项目先建）、全局串行构建队列保护共享缓存、
+    磁盘缓存按项目分文件、watcher 事件按路径归属调度、workspace 文件夹变化
+    重检、激活事件补 mapmetadata 与打开 Data 文件夹场景；测试 151 → 168。
+25. [x] 属性补全换行判定与值补全去重（2026-08-07）：`attributeInsertLayout`
+     只按光标之前的完整属性判断“是否已在新行”，one-per-line 标签中间插入或
+     首属性新行补全不再多插换行，同一行第二个属性仍按原规则换行；
+     `assetIdItems` 按 id 去重（局部 overlay / 全局索引 / manifest 同一 ID
+     只给一项，其余定义列入文档说明），`defineItems` 同步按名去重；
+     测试 168 → 173；版本 0.1.20；分析见 `docs/analysis-issues.md` 二十五。
+26. [x] 磁盘缓存可观测性、分阶段校验与进度显示（2026-08-08）：
+     `DiskRecordsCache` 拆为 `load()`（读 + gunzip + JSON）与 `validate()`（逐文件
+     stat，带进度回调）；冷启动**先校验 XML/full 记录再构建**，美术/shallow
+     记录先以 `validated:false` 预播种（phase A 只登记不消费，避免 stat 2.6GB
+     模型），在 phase A 发布后的回调里校验并进入 phase B——phase A 可用时间
+     从 ~34s 提前到 ~16s，且不牺牲“未校验缓存不可信”的正确性（曾尝试构建后
+     后台校验，既有 I/O 争用又无法事后发现 stat 不可见变化，已放弃）；
+     校验进度写入状态栏（`validating cache N/M…`）并每 1000 条输出一行日志；
+     `DiskCacheLoadStats` 增加 `loadMs` / `validateMs`，输出通道新增
+     `[disk-cache] loaded / validated / saved` 计时与 `[build] wall time`
+     （含缓存加载的总耗时），cacheReport 与状态栏 tooltip 展示校验耗时；
+     输出通道所有日志行自动加本地 `HH:mm:ss.mmm` 时间戳（`ModWorkspace.log`）；
+     修复构建完成后状态栏仍显示 indexing（`building` 置 false 后补一次
+     `updateStatusBar()`）；测试 173 → 175；分析见
+     `docs/analysis-issues.md` 二十六。
+27. [x] CodeLens 与 FAR 使用同一套定义合并路径（2026-08-10）：CodeLens
+     改为通过 `getScope(document)` 取 merged index，并用
+     `definitionsForReference`（文档 local overlay + 全局同名定义）+ 
+     `collectReferenceSites` 计算计数，与 Find All References 严格一致；
+     点击 lens 打开的 references peek（`showReferencesForDef`）同步改为
+     同一逻辑，修复“FAR 有引用但 WeaponTemplate 等 CodeLens 不显示/为 0”
+     的 standalone / 未进全局流文件场景；`scheduleRebuildIfRecordsDesync`
+     在 CodeLens 中也改用 `recordsSyncSurfaceFor(document)`（按文档所属
+     项目自愈）。补充：CodeLens 改用轻量 `getCodeLensScope`（只解析当前
+     文档 + 挂全局索引，不展开 include 链），快照发布后计数即时刷新；
+     仅在尚无全局快照（`stats.indexedFiles === 0`）时不渲染 CodeLens，
+     快照存在后“0 references”仍按设计显示；新增 `onDidChangeCodeLenses`
+     事件在每次快照发布时主动通知 VS Code 重新查询（不再只依赖 refresh
+     命令）；输出通道增加 `[codelens] refresh`（快照发布时低频记录）、
+     `[codelens] suppressed`（首个快照前每个文档只记一次）、scope 异常与
+     超过 250ms 的慢调用记录；另加**全局重试定时器**：构建期间每 2s 重新
+     fire 一次 CodeLens 刷新（`onBuildStart` 启动、`!isBuilding` 停止），
+     避免 VS Code 合并/漏掉单次 refresh 事件导致 phase A 计数迟迟不出现；
+     定时器只在构建期存在，构建结束即清除；测试 175 → 178；分析见
+     `docs/analysis-issues.md` 二十七。
+28. [x] manifest 源地址按 vanilla-only 解析（2026-08-10）：新增
+     `buildVanillaSearchPaths(sdkDir)`，`manifestSource` 只按
+     `[SDK根, SDK\SageXml]`（ART/AUDIO 同理）解析，不再使用当前项目 BAB
+     顺序；修复 mod 同名 `DATA:globaldata/weapon.xml` 遮蔽导致 manifest
+     定义跳不到 SageXml 的问题；`referenceIndex` 的 manifest 源归并同步
+     修正；SageXml 源缺失时保持 manifest-only，文件存在但 id 被删时降级
+     到文件顶部；测试 178 → 184；分析见 `docs/analysis-issues.md`
+     二十八。
 
 ## 四、验证结果（实测）
 
@@ -320,19 +433,25 @@ test/
 单元测试覆盖：XML 解析（自闭合/容错/偏移/未闭合引号行尾恢复 + recovered
 标记）、补全上下文（未闭合引号仍为 attribute-value、多行未闭合引号、list 多值
 分段、闭合引号后为 attribute-name）、补全集成（vscode stub 下
-`LocomotorTemplate@Surfaces` 未闭合引号枚举补全、空格后第二段过滤与替换范围、
-空格后排除已用 flag、中间插入范围止于光标、闭合值末尾追加模式、`CAN_ATTACK`
-前缀保护、多行未闭合 `Disposition` 完整链路、闭合引号后补空格、一行一个属性
-换行缩进、新行缩进对齐、标量类型化默认值）、语义 token（标签/属性/值范围、
-合法文档返回空、malformed 返回兜底 token）、include 解析（BAB 顺序、SDK 根
-优先于 SageXml）、manifest 二进制解析（合成 v5 样本、类型/ID 推导）、索引器
-（资产/Define/流/缺失 include/嵌套 xi:include）、XSD 模型（上下文类型、
-`childTypeOf`、大小写规范化、属性级 refType、外来命名空间判定、`xs:list`
-枚举继承与 `isList` 标记）、引用过滤（`Weapon="X"` 只跳 `WeaponTemplate`、
-模块 `id` 定义点、Poid 局部引用、`xi:include` 不校验、`Side="Allies"` 命中
-manifest 的 `PlayerTemplate`）、simple-content 文本引用（`<` 后补全不产生
-`<<`、`<CreateObject>$1</CreateObject>` 片段、内容值按 refType 过滤、
-内容 hover / Ctrl 跳转 / 诊断）。
+    `LocomotorTemplate@Surfaces` 未闭合引号枚举补全、空格后第二段过滤与替换范围、
+    空格后排除已用 flag、中间插入范围止于光标、闭合值末尾追加模式、`CAN_ATTACK`
+    前缀保护、多行未闭合 `Disposition` 完整链路、闭合引号后补空格、一行一个属性
+    换行缩进、新行缩进对齐、标量类型化默认值）、语义 token（标签/属性/值范围、
+    合法文档返回空、malformed 返回兜底 token）、include 解析（BAB 顺序、SDK 根
+    优先于 SageXml；manifest 源 vanilla-only：mod 同名遮蔽仍命中 SageXml、
+    源缺失保持 manifest-only、id 被删降级文件顶部）、manifest 二进制解析
+    （合成 v5 样本、类型/ID 推导）、索引器
+    （资产/Define/流/缺失 include/嵌套 xi:include）、XSD 模型（上下文类型、
+    `childTypeOf`、大小写规范化、属性级 refType、外来命名空间判定、`xs:list`
+    枚举继承与 `isList` 标记）、引用过滤（`Weapon="X"` 只跳 `WeaponTemplate`、
+    模块 `id` 定义点、Poid 局部引用、`xi:include` 不校验、`Side="Allies"` 命中
+    manifest 的 `PlayerTemplate`）、simple-content 文本引用（`<` 后补全不产生
+    `<<`、`<CreateObject>$1</CreateObject>` 片段、内容值按 refType 过滤、
+    内容 hover / Ctrl 跳转 / 诊断）、引用索引（records 引用提取：attr/content/
+    inheritFrom、排除 id/Poid/`$DEFINE`/枚举；`buildReferenceIndex` 严格类型过滤
+    不串同名 ID；minimod 集成：`CommandSet` / `inheritFrom` 反向命中；未引用过滤
+    只含 project 非 viaInstance；CodeLens 类型过滤与 0 显示；语义 FAR 排除定义
+    行与非引用属性）。
 
 > 注：D: 盘移动硬盘已恢复连接；Corona 已在第八 / 九轮按上述新数据回归。
 
@@ -345,7 +464,7 @@ manifest 的 `PlayerTemplate`）、simple-content 文本引用（`<` 后补全
   展开（第十二轮，见第六节）；顶层 `<Include type="all">` 与 `inheritFrom` +
   `xai:joinAction` 的深合并仍未实现，后续如需要“当前文档视角的全量合并诊断”再继续。
 
-## 六、include 展开设计备忘（2026-08-01；xi:include 部分已实施于第十二轮）
+## 六、include 展开设计备忘（2026-08-01；xi:include 部分已实施于第十二轮，无 xpointer 语义与片段诊断见第二十八轮）
 
 > 目的：集中记录 include 处理相关的现状、结论与设计，下次遇到 include 问题时从这里继续，
 > 并在实施后把结果回写本节。
@@ -358,7 +477,8 @@ manifest 的 `PlayerTemplate`）、simple-content 文本引用（`<` 后补全
 | `reference` → builtmods manifest 解析 / 缺失回退占位 XML | 已实现 |
 | 嵌套 `xi:include`（任意层级）：目标可索引、缺失报 `include-not-found`、Ctrl+点击跳转、`href` hover 解析目标 | 已实现（第二轮 + 第五轮） |
 | `xi:include` 及其属性不参与 XSD 校验（外来命名空间守卫 `isXsdElementName` / `isXsdAttributeName`） | 已实现（第五轮） |
-| include 目标内容“虚拟合并”进父文档的逻辑树 | 已实现 `xi:include`（第十二轮）；顶层 `<Include type="all">` 仍不展开 |
+| include 目标内容“虚拟合并”进父文档的逻辑树 | 已实现 `xi:include`（第十二轮）；**无 `xpointer` 时整体包含目标根元素**（第二十八轮修正）；顶层 `<Include type="all">` 仍不展开 |
+| 片段文件（根非 `AssetDeclaration`）的诊断 | 已实现 P0（第二十八轮）：跳过顶层 id/重复/引用/define 检查；根为已知 XSD 元素时仍校验子树；根未知时只报语法与 include 缺失 |
 
 ### 2. 已确认的方向
 
@@ -369,9 +489,11 @@ BAB（`defaultscript.cs`）编译时正是这样把整个 Mod 合并成一份大
 
 - **不要**把 include 目标展开成文本再整体重新解析：源码偏移会断裂，诊断 / 跳转 / hover /
   补全全部无法映射回原始文件。
-- **要做**的是：解析器逐文件解析（现状不变）；展开器把目标文件选中节点按 `xpointer`
-  子集挂进父元素，节点保留各自的源文件与原始偏移（来源追溯）。后续分析跑在逻辑树上，
-  范围映射按节点 `sourceFile` 回到对应文件的 lineMap。
+- **要做**的是：解析器逐文件解析（现状不变）；展开器把目标文件选中节点挂进父元素——
+  有 `xpointer` 时取 `/n:Name/child::*` 选中 children，无 `xpointer` 时按 XInclude 语义
+  整体包含目标根元素（RA3 片段如 `CreateObjectDie` 依赖这一行为）；节点保留各自的源文件
+  与原始偏移（来源追溯）。后续分析跑在逻辑树上，范围映射按节点 `sourceFile` 回到对应
+  文件的 lineMap。
 - 现有 `parseXml` 已记录标签 / 属性 / 值的起止偏移，`XmlElement` 结构可直接复用；拼接时
   用浅拷贝节点壳并重建 parent 链，避免破坏目标文件缓存树自身的 parent 指针。
 
@@ -379,7 +501,7 @@ BAB（`defaultscript.cs`）编译时正是这样把整个 Mod 合并成一份大
 
 | 构造 | 拼入逻辑树 | 理由 |
 |---|---|---|
-| `xi:include` | ✅ | 内容并入父元素（HeadlightDraw2 场景） |
+| `xi:include` | ✅ | 有 `xpointer`：选中容器 children；无 `xpointer`：整体包含目标根元素（CreateObjectDie / TechUpgradeReceiver 等片段场景） |
 | EA `<Include type="all">` | ✅ | BAB“内容合并”，等价于复制进来 |
 | `type="instance"` | ❌ | 只影响编译可见性；拼树会把 BaseVehicle 的顶层资产错误塞进当前文档 |
 | `type="reference"` | ❌ | manifest 编译产物，无文本内容 |

docs/requirements.md

@@ -64,6 +64,14 @@ XML 之间的组织靠 `<Include>` 标签，共有三种语义：
    - `<Include>` 目标文件找不到、Include 循环；
    - `$DEFINE` 未定义。
 
+**补充（工作区/项目检测，2026-08-07）**：
+- 项目根不要求工作区精确匹配 `Data/Mod.xml`：从工作区文件夹向上最多 12 层、
+  从打开的 XML 文件向上、以及从“包含多个 mod 的容器文件夹”向下浅扫最多 3 层
+  均可发现项目根（`Data/Mod.xml`、`Data/additionalmaps/mapmetadata_*.xml`、
+  `*.babproj` 任一标记命中即可，大小写不敏感、最近命中优先）。
+- 多项目同时打开时按文档就近选择项目；单项目打开立即建索引，容器/多项目采用
+  惰性索引（活动文档所属项目先建，其他在文档打开或首次请求时建），构建串行执行。
+
 **补充（manifest 解析，支持 include reference 后的补全/导航/诊断）**：
 
 - 当 `Mod.xml`（或其他文件）用 `<Include type="reference" source="DATA:static.xml" />` 引用占位文件时，实际内容来自 SDK `builtmods` 下对应的已编译二进制 manifest（`static.manifest` / `global.manifest` / `audio.manifest`）。
@@ -71,6 +79,11 @@ XML 之间的组织靠 `<Include>` 标签，共有三种语义：
   - **代码补全**：例如 reference 了 `audio.xml` 后，所有音频资产 ID 都能出现在引用型属性（如 `AudioEventRef`）的补全里；
   - **引用导航/悬停**：能定位资产来自哪个 manifest、哪个源文件；
   - **诊断**：能把“引用了 manifest 中的 ID”识别为已解析，而不是误报未解析引用。
+- manifest 的 `sourceFileName`（如 `DATA:globaldata/weapon.xml`）是**原版编译
+  时的源地址**，按 vanilla-only 搜索路径（SDK 根 + `SageXml`）解析，不能用当前
+  mod 的 BAB 顺序解析——否则 mod 同名 DATA 路径会遮蔽 SageXml 源码。ART/AUDIO
+  源码默认不映射（SDK 基本不提供）；SageXml 源缺失时保持 manifest-only，
+  文件存在但 id 被删时降级到文件顶部。
 - manifest 为二进制格式，解析逻辑参考 OpenSAGE `ManifestFile.cs`（用户已在本工作区 `OpenSAGE/` 克隆并切到指定 commit）。关键格式要点：
   - 头部含版本（5/6/7）、端序标志、各缓冲区大小、资产数量；
   - 每个资产条目含 `TypeId`（哈希）、`NameOffset`、`SourceFileNameOffset` 等；
@@ -86,9 +99,21 @@ XML 之间的组织靠 `<Include>` 标签，共有三种语义：
   美术资产目录（Corona 约 2.6 GB）；索引记录与 include 解析结果同样跨重建缓存，
   保存触发的重建零 stat、零重读（Corona 实测约 2 秒）。
 
+**补充（引用计数、语义 Find All References 与未引用资产，2026-08-05）**：
+- 每个顶部 asset 显示被引用次数（CodeLens，0 也显示），点击直接打开
+  references peek；只在“设计上应被引用”的类型上显示，避免设置类/地图元数据/
+  w3x 子结构等自动注册类型制造满屏 0；
+- Find All References 改为基于语义引用索引（属性引用 + simple-content 文本 +
+  `inheritFrom`，排除 id 定义点 / Poid / `$DEFINE`），不再全文搜索；
+- 命令 `Find unreferenced assets…`：按类型列出所有零引用的项目定义并跳转；
+  编辑器右键菜单 `Find unreferenced assets of this type` 预选光标所在类型；
+- 设计文档见 `docs/features-reference-counts.md`。
+
 ### P1：非近期目标（本期不做，但预留扩展点）
 
 6. **高效搜索**：Mod 项目巨大（Corona 约 7500 个 XML、38MB）时直接全文搜索很慢，需要一个高效的 XML 内容索引机制。
+   （2026-08-05：语义引用索引已落地，FAR / 引用计数 / 未引用报告不再全文搜索；
+   通用内容搜索与索引复用仍属远期。）
 7. **索引机制的复用性**：希望索引不仅能服务 VS Code 插件，也能被其他工具（如搜索、静态分析）复用，因此索引/解析核心应设计成与编辑器无关的纯模块。
 
 ## 三、环境与参考资源
@@ -104,6 +129,9 @@ XML 之间的组织靠 `<Include>` 标签，共有三种语义：
 ## 四、验收标准
 
 - 在 AttachTest / GenEvoTest 上开箱即用（高亮、补全、跳转、诊断）。
+- 打开 mod 的 `Data` 文件夹、`Data` 子文件夹、仅含 mapmetadata 的项目、
+  单个 XML 文件、以及“内部包含多个 mod”的容器文件夹时均能正确发现项目根；
+  多项目打开时各自索引与功能互不串扰。
 - 在 Corona 规模的目录上不卡 UI：索引在后台执行、保存文件后增量更新。
 - 纯解析/索引核心不依赖 VS Code API，可被其他工具复用。
 - 可用 `vsce package` 打出可安装的 `.vsix`。

l10n/bundle.l10n.json

@@ -0,0 +1,157 @@
+{
+  "RA3 Mod XML: caches cleared; rebuilding from scratch…": "RA3 Mod XML: caches cleared; rebuilding from scratch…",
+  "RA3 Mod XML: index is still building — check the status bar. Most features become available after the XML phase.": "RA3 Mod XML: index is still building — check the status bar. Most features become available after the XML phase.",
+  "RA3 Mod XML: no index for the active project yet — open a mod XML document to start indexing.": "RA3 Mod XML: no index for the active project yet — open a mod XML document to start indexing.",
+  "RA3 Mod XML: no index available. Open a workspace that contains Data/Mod.xml, Data/additionalmaps/mapmetadata_*.xml or a mod folder.": "RA3 Mod XML: no index available. Open a workspace that contains Data/Mod.xml, Data/additionalmaps/mapmetadata_*.xml or a mod folder.",
+  "(stale)": "(stale)",
+  "RA3 Mod XML index": "RA3 Mod XML index",
+  "Project: {0}": "Project: {0}",
+  "Files: {0} ({1} parsed, {2} shallow-scanned, {3} cache hits)": "Files: {0} ({1} parsed, {2} shallow-scanned, {3} cache hits)",
+  "Assets: {0} ({1} from {2} manifests)": "Assets: {0} ({1} from {2} manifests)",
+  "References: {0}": "References: {0}",
+  "Defines: {0} · Streams: {1} · Candidates: {2}": "Defines: {0} · Streams: {1} · Candidates: {2}",
+  "Phase: {0} · Complete: {1}{2}": "Phase: {0} · Complete: {1}{2}",
+  "Build #{0} (trigger: {1})": "Build #{0} (trigger: {1})",
+  "Indexed in {0}s": "Indexed in {0}s",
+  "XML walk: {0}s · Candidates: {1}s · Art scan: {2}s": "XML walk: {0}s · Candidates: {1}s · Art scan: {2}s",
+  "0 references": "0 references",
+  "1 reference": "1 reference",
+  "{0} references": "{0} references",
+  "Type: {0}": "Type: {0}",
+  "RA3 XML · {0}": "RA3 XML · {0}",
+  "RA3 XML": "RA3 XML",
+  "Root element of every RA3 asset file": "Root element of every RA3 asset file",
+  "**Required**": "**Required**",
+  "References: `{0}`": "References: `{0}`",
+  "Values: {0}": "Values: {0}",
+  "Default: `{0}`": "Default: `{0}`",
+  "Type: `{0}`": "Type: `{0}`",
+  "Suggest attribute values": "Suggest attribute values",
+  "Instance join action": "Instance join action",
+  "Controls how this element merges with the inherited definition: `Replace` or `Remove`.": "Controls how this element merges with the inherited definition: `Replace` or `Remove`.",
+  "xai namespace": "xai namespace",
+  "Include type": "Include type",
+  "xai:joinAction": "xai:joinAction",
+  "enum": "enum",
+  "boolean": "boolean",
+  "Include source": "Include source",
+  "`{0}` · {1}": "`{0}` · {1}",
+  "relative": "relative",
+  "manifest ({0})": "manifest ({0})",
+  "manifest": "manifest",
+  "**Type**: {0}": "**Type**: {0}",
+  "**Source**: {0}": "**Source**: {0}",
+  "**Origin**: {0}": "**Origin**: {0}",
+  "Also defined as **{0}** · {1}": "Also defined as **{0}** · {1}",
+  "{0} · {1}": "{0} · {1}",
+  "Define": "Define",
+  "local module": "local module",
+  "Pipeline-local id in the enclosing GameObject (includes xi:include targets).": "Pipeline-local id in the enclosing GameObject (includes xi:include targets).",
+  "Suggest content value": "Suggest content value",
+  "project": "project",
+  "SDK": "SDK",
+  "Content is not allowed before the root element": "Content is not allowed before the root element",
+  "Unterminated comment": "Unterminated comment",
+  "Unterminated CDATA section": "Unterminated CDATA section",
+  "Unterminated DOCTYPE": "Unterminated DOCTYPE",
+  "Unterminated processing instruction": "Unterminated processing instruction",
+  "Unterminated closing tag": "Unterminated closing tag",
+  "Unterminated start tag": "Unterminated start tag",
+  "Malformed markup": "Malformed markup",
+  "Unexpected closing tag </{0}>": "Unexpected closing tag </{0}>",
+  "Mismatched closing tag: expected </{0}>, found </{1}>": "Mismatched closing tag: expected </{0}>, found </{1}>",
+  "Element <{0}> is never closed": "Element <{0}> is never closed",
+  "Top-level asset <{0}> requires an id attribute": "Top-level asset <{0}> requires an id attribute",
+  "Unknown element <{0}> (not in the RA3 XSD model)": "Unknown element <{0}> (not in the RA3 XSD model)",
+  " (based on a partial index)": " (based on a partial index)",
+  " (index incomplete — may be a false positive)": " (index incomplete — may be a false positive)",
+  "Include target not found: {0}": "Include target not found: {0}",
+  "xi:include target not found: {0}": "xi:include target not found: {0}",
+  "XInclude element (W3C XInclude namespace) — not part of the RA3 XSD model.": "XInclude element (W3C XInclude namespace) — not part of the RA3 XSD model.",
+  "**Top-level asset element**": "**Top-level asset element**",
+  "Attributes: {0} · Children: {1}": "Attributes: {0} · Children: {1}",
+  "Extends: `{0}`": "Extends: `{0}`",
+  "Simple type: `{0}`": "Simple type: `{0}`",
+  "Not found in the bundled XSD model.": "Not found in the bundled XSD model.",
+  "Namespace/instance attribute.": "Namespace/instance attribute.",
+  "XInclude attribute (W3C XInclude namespace) — not part of the RA3 XSD model.": "XInclude attribute (W3C XInclude namespace) — not part of the RA3 XSD model.",
+  "Unknown attribute for this element.": "Unknown attribute for this element.",
+  "References assets of type `{0}`": "References assets of type `{0}`",
+  "Values: `{0}`": "Values: `{0}`",
+  "May use `$DEFINE` constants": "May use `$DEFINE` constants",
+  "**Include source**": "**Include source**",
+  "Include source: `{0}` (not in candidate index)": "Include source: `{0}` (not in candidate index)",
+  "Index is still building — references cannot be resolved yet.": "Index is still building — references cannot be resolved yet.",
+  "**Define** `{0}`": "**Define** `{0}`",
+  "Defined in `{0}:{1}`": "Defined in `{0}:{1}`",
+  "**1 definition**": "**1 definition**",
+  "**{0} definitions**": "**{0} definitions**",
+  "manifest `{0}`": "manifest `{0}`",
+  "`{0}:{1}`": "`{0}:{1}`",
+  "- `{0}` · {1}": "- `{0}` · {1}",
+  "No matching definition of type `{0}` in the current index (may exist in a compiled manifest or vanilla data).": "No matching definition of type `{0}` in the current index (may exist in a compiled manifest or vanilla data).",
+  "No matching definition of the expected declared type in the current index (may exist in a compiled manifest or vanilla data).": "No matching definition of the expected declared type in the current index (may exist in a compiled manifest or vanilla data).",
+  "No matching definition in the current index (may exist in a compiled manifest or vanilla data).": "No matching definition in the current index (may exist in a compiled manifest or vanilla data).",
+  "**Local pipeline id** `{0}`": "**Local pipeline id** `{0}`",
+  "RA3 Mod XML: no index available yet.": "RA3 Mod XML: no index available yet.",
+  "RA3 Mod XML: no unreferenced assets found.": "RA3 Mod XML: no unreferenced assets found.",
+  "{0} unreferenced": "{0} unreferenced",
+  "Select an asset type": "Select an asset type",
+  "RA3 Mod XML: no unreferenced {0} assets found.": "RA3 Mod XML: no unreferenced {0} assets found.",
+  "{0}: {1} unreferenced": "{0}: {1} unreferenced",
+  "RA3 Mod XML: open an RA3 mod project first to configure the SDK path.": "RA3 Mod XML: open an RA3 mod project first to configure the SDK path.",
+  "Use detected path": "Use detected path",
+  "Choose manually…": "Choose manually…",
+  "Not now": "Not now",
+  "RA3 Mod XML could not find a valid SDK path. Detected installed SDK: {0}": "RA3 Mod XML could not find a valid SDK path. Detected installed SDK: {0}",
+  "Choose SDK folder…": "Choose SDK folder…",
+  "RA3 Mod XML needs the RA3 Mod SDK path to enable vanilla data, manifests and cross-file completion/navigation. Without it, the extension runs in project-only mode.": "RA3 Mod XML needs the RA3 Mod SDK path to enable vanilla data, manifests and cross-file completion/navigation. Without it, the extension runs in project-only mode.",
+  "Choose SDK root": "Choose SDK root",
+  "Choose the RA3 Mod SDK root (should contain Schemas/xsd/CnC3Types.xsd)": "Choose the RA3 Mod SDK root (should contain Schemas/xsd/CnC3Types.xsd)",
+  "The selected directory is not a usable RA3 Mod SDK (missing {0}). Please choose again.": "The selected directory is not a usable RA3 Mod SDK (missing {0}). Please choose again.",
+  "that directory": "that directory",
+  "$(warning) RA3 XML: SDK path does not exist": "$(warning) RA3 XML: SDK path does not exist",
+  "$(warning) RA3 XML: SDK not configured": "$(warning) RA3 XML: SDK not configured",
+  "$(warning) RA3 XML: SDK path is invalid": "$(warning) RA3 XML: SDK path is invalid",
+  "$(warning) RA3 XML: SDK is incomplete": "$(warning) RA3 XML: SDK is incomplete",
+  "The directory configured in ra3modxml.sdkPath does not exist: {0}. Click to reconfigure, or clear ra3modxml.sdkPath to disable vanilla data features.": "The directory configured in ra3modxml.sdkPath does not exist: {0}. Click to reconfigure, or clear ra3modxml.sdkPath to disable vanilla data features.",
+  "RA3 Mod SDK path is not configured. Click to set it, or clear ra3modxml.sdkPath to disable vanilla data features.": "RA3 Mod SDK path is not configured. Click to set it, or clear ra3modxml.sdkPath to disable vanilla data features.",
+  "The directory configured in ra3modxml.sdkPath is not an RA3 Mod SDK root (missing Schemas/xsd/CnC3Types.xsd). Click to reconfigure.": "The directory configured in ra3modxml.sdkPath is not an RA3 Mod SDK root (missing Schemas/xsd/CnC3Types.xsd). Click to reconfigure.",
+  "RA3 Mod SDK is missing: {0}. Manifest / vanilla source / SDK search path features are unavailable.": "RA3 Mod SDK is missing: {0}. Manifest / vanilla source / SDK search path features are unavailable.",
+  "RA3 Mod XML: SDK path set to {0}; rebuilding the index…": "RA3 Mod XML: SDK path set to {0}; rebuilding the index…",
+  "$(sync~spin) RA3 XML: indexing…": "$(sync~spin) RA3 XML: indexing…",
+  "art cache": "art cache",
+  "$(error) RA3 XML: indexing failed (stale index kept)": "$(error) RA3 XML: indexing failed (stale index kept)",
+  "$(error) RA3 XML: indexing failed": "$(error) RA3 XML: indexing failed",
+  "$(sync~spin) RA3 XML: validating {0} {1}/{2}…": "$(sync~spin) RA3 XML: validating {0} {1}/{2}…",
+  "RA3 Mod XML cache report": "RA3 Mod XML cache report",
+  "Projects: {0}": "Projects: {0}",
+  "  builds: #{0} (last trigger: {1})": "  builds: #{0} (last trigger: {1})",
+  "  disk cache: {0}": "  disk cache: {0}",
+  "not loaded": "not loaded",
+  "    file: {0}": "    file: {0}",
+  "{0} KB": "{0} KB",
+  "missing": "missing",
+  "    last load: file={0} keyMatched={1} loaded={2} validated={3} dropped={4} (load {5}ms, validate {6}ms)": "    last load: file={0} keyMatched={1} loaded={2} validated={3} dropped={4} (load {5}ms, validate {6}ms)",
+  "    saved after last build: {0}": "    saved after last build: {0}",
+  "yes": "yes",
+  "no": "no",
+  "    last build: phase={0} assets={1} snapshotHits={2} snapshotFallbacks={3} recordsCacheHits={4} shallowCacheHits={5}": "    last build: phase={0} assets={1} snapshotHits={2} snapshotFallbacks={3} recordsCacheHits={4} shallowCacheHits={5}",
+  "Shared in-memory: {0} record entries · {1} documents ({2} elements) · {3} include resolutions": "Shared in-memory: {0} record entries · {1} documents ({2} elements) · {3} include resolutions",
+  "$(symbol-misc) RA3 XML: {0} project(s) — open a mod XML to index": "$(symbol-misc) RA3 XML: {0} project(s) — open a mod XML to index",
+  "$(symbol-misc) RA3 XML: {0} · {1} assets{2}": "$(symbol-misc) RA3 XML: {0} · {1} assets{2}",
+  "{0} files indexed ({1} parsed, {2} art assets shallow-scanned, {3}s)": "{0} files indexed ({1} parsed, {2} art assets shallow-scanned, {3}s)",
+  "{0} assets ({1} from {2} manifests)": "{0} assets ({1} from {2} manifests)",
+  "{0} reference sites": "{0} reference sites",
+  "{0} defines, {1} streams, {2} include candidates": "{0} defines, {1} streams, {2} include candidates",
+  "Disk cache: load {0}s, validate {1}s ({2}/{3} ok)": "Disk cache: load {0}s, validate {1}s ({2}/{3} ok)",
+  "Duplicate id \"{0}\" for <{1}> (also defined on line {2})": "Duplicate id \"{0}\" for <{1}> (also defined on line {2})",
+  "Duplicate id \"{0}\" for <{1}> (also defined in {2})": "Duplicate id \"{0}\" for <{1}> (also defined in {2})",
+  "Unknown attribute \"{0}\" for <{1}>": "Unknown attribute \"{0}\" for <{1}>",
+  "Undefined define \"${0}\"": "Undefined define \"${0}\"",
+  "Invalid Include type \"{0}\" (expected reference, instance or all)": "Invalid Include type \"{0}\" (expected reference, instance or all)",
+  "Reference \"{0}\" has no definition of type `{1}` (ids with the same name exist for other types)": "Reference \"{0}\" has no definition of type `{1}` (ids with the same name exist for other types)",
+  "Reference \"{0}\" has no definition of the expected declared type (ids with the same name exist for other types)": "Reference \"{0}\" has no definition of the expected declared type (ids with the same name exist for other types)",
+  "Reference \"{0}\" has no matching definition (ids with the same name exist for other types)": "Reference \"{0}\" has no matching definition (ids with the same name exist for other types)",
+  "Unresolved reference \"{0}\" (not found in the current index)": "Unresolved reference \"{0}\" (not found in the current index)"
+}

l10n/bundle.l10n.zh-cn.json

@@ -0,0 +1,157 @@
+{
+  "RA3 Mod XML: caches cleared; rebuilding from scratch…": "RA3 Mod XML：缓存已清空，正在从零重建…",
+  "RA3 Mod XML: index is still building — check the status bar. Most features become available after the XML phase.": "RA3 Mod XML：索引仍在构建中——请查看状态栏。大部分功能会在 XML 阶段完成后可用。",
+  "RA3 Mod XML: no index for the active project yet — open a mod XML document to start indexing.": "RA3 Mod XML：活动项目还没有索引——打开一个 Mod XML 文档即可开始建索引。",
+  "RA3 Mod XML: no index available. Open a workspace that contains Data/Mod.xml, Data/additionalmaps/mapmetadata_*.xml or a mod folder.": "RA3 Mod XML：当前没有可用索引。请打开包含 Data/Mod.xml、Data/additionalmaps/mapmetadata_*.xml 或 Mod 文件夹的工作区。",
+  "(stale)": "（已过期）",
+  "RA3 Mod XML index": "RA3 Mod XML 索引",
+  "Project: {0}": "项目：{0}",
+  "Files: {0} ({1} parsed, {2} shallow-scanned, {3} cache hits)": "文件：{0}（解析 {1}，浅扫描 {2}，缓存命中 {3}）",
+  "Assets: {0} ({1} from {2} manifests)": "资产：{0}（其中 {1} 来自 {2} 个 manifest）",
+  "References: {0}": "引用：{0}",
+  "Defines: {0} · Streams: {1} · Candidates: {2}": "常量：{0} · 流：{1} · 候选：{2}",
+  "Phase: {0} · Complete: {1}{2}": "阶段：{0} · 完成：{1}{2}",
+  "Build #{0} (trigger: {1})": "构建 #{0}（触发原因：{1}）",
+  "Indexed in {0}s": "索引耗时 {0} 秒",
+  "XML walk: {0}s · Candidates: {1}s · Art scan: {2}s": "XML 遍历：{0} 秒 · 候选扫描：{1} 秒 · 美术扫描：{2} 秒",
+  "0 references": "0 个引用",
+  "1 reference": "1 个引用",
+  "{0} references": "{0} 个引用",
+  "Type: {0}": "类型：{0}",
+  "RA3 XML · {0}": "RA3 XML · {0}",
+  "RA3 XML": "RA3 XML",
+  "Root element of every RA3 asset file": "每个 RA3 资产文件的根元素",
+  "**Required**": "**必填**",
+  "References: `{0}`": "引用：`{0}`",
+  "Values: {0}": "取值：{0}",
+  "Default: `{0}`": "默认值：`{0}`",
+  "Type: `{0}`": "类型：`{0}`",
+  "Suggest attribute values": "建议属性值",
+  "Instance join action": "实例合并动作",
+  "Controls how this element merges with the inherited definition: `Replace` or `Remove`.": "控制该元素如何与继承的定义合并：`Replace` 或 `Remove`。",
+  "xai namespace": "xai 命名空间",
+  "Include type": "Include 类型",
+  "xai:joinAction": "xai:joinAction",
+  "enum": "枚举",
+  "boolean": "布尔值",
+  "Include source": "Include 源",
+  "`{0}` · {1}": "`{0}` · {1}",
+  "relative": "相对路径",
+  "manifest ({0})": "manifest（{0}）",
+  "manifest": "manifest",
+  "**Type**: {0}": "**类型**：{0}",
+  "**Source**: {0}": "**来源**：{0}",
+  "**Origin**: {0}": "**归属**：{0}",
+  "Also defined as **{0}** · {1}": "也定义为 **{0}** · {1}",
+  "{0} · {1}": "{0} · {1}",
+  "Define": "定义",
+  "local module": "局部模块",
+  "Pipeline-local id in the enclosing GameObject (includes xi:include targets).": "所在 GameObject 中的管线局部 id（包含 xi:include 目标）。",
+  "Suggest content value": "建议内容值",
+  "project": "项目",
+  "SDK": "SDK",
+  "Content is not allowed before the root element": "根元素之前不允许出现内容",
+  "Unterminated comment": "注释未结束",
+  "Unterminated CDATA section": "CDATA 段未结束",
+  "Unterminated DOCTYPE": "DOCTYPE 未结束",
+  "Unterminated processing instruction": "处理指令未结束",
+  "Unterminated closing tag": "结束标签未闭合",
+  "Unterminated start tag": "开始标签未闭合",
+  "Malformed markup": "标记格式错误",
+  "Unexpected closing tag </{0}>": "意外的结束标签 </{0}>",
+  "Mismatched closing tag: expected </{0}>, found </{1}>": "结束标签不匹配：应为 </{0}>，实际为 </{1}>",
+  "Element <{0}> is never closed": "元素 <{0}> 从未闭合",
+  "Top-level asset <{0}> requires an id attribute": "顶层资产 <{0}> 需要 id 属性",
+  "Unknown element <{0}> (not in the RA3 XSD model)": "未知元素 <{0}>（不在 RA3 XSD 模型中）",
+  " (based on a partial index)": "（基于部分索引）",
+  " (index incomplete — may be a false positive)": "（索引不完整——可能是误报）",
+  "Include target not found: {0}": "找不到 Include 目标：{0}",
+  "xi:include target not found: {0}": "找不到 xi:include 目标：{0}",
+  "XInclude element (W3C XInclude namespace) — not part of the RA3 XSD model.": "XInclude 元素（W3C XInclude 命名空间）——不属于 RA3 XSD 模型。",
+  "**Top-level asset element**": "**顶层资产元素**",
+  "Attributes: {0} · Children: {1}": "属性：{0} · 子元素：{1}",
+  "Extends: `{0}`": "继承自：`{0}`",
+  "Simple type: `{0}`": "简单类型：`{0}`",
+  "Not found in the bundled XSD model.": "内置 XSD 模型中未找到。",
+  "Namespace/instance attribute.": "命名空间/实例属性。",
+  "XInclude attribute (W3C XInclude namespace) — not part of the RA3 XSD model.": "XInclude 属性（W3C XInclude 命名空间）——不属于 RA3 XSD 模型。",
+  "Unknown attribute for this element.": "该元素的未知属性。",
+  "References assets of type `{0}`": "引用类型为 `{0}` 的资产",
+  "Values: `{0}`": "取值：`{0}`",
+  "May use `$DEFINE` constants": "可使用 `$DEFINE` 常量",
+  "**Include source**": "**Include 源**",
+  "Include source: `{0}` (not in candidate index)": "Include 源：`{0}`（不在候选索引中）",
+  "Index is still building — references cannot be resolved yet.": "索引仍在构建中——暂时无法解析引用。",
+  "**Define** `{0}`": "**常量** `{0}`",
+  "Defined in `{0}:{1}`": "定义于 `{0}:{1}`",
+  "**1 definition**": "**1 个定义**",
+  "**{0} definitions**": "**{0} 个定义**",
+  "manifest `{0}`": "manifest `{0}`",
+  "`{0}:{1}`": "`{0}:{1}`",
+  "- `{0}` · {1}": "- `{0}` · {1}",
+  "No matching definition of type `{0}` in the current index (may exist in a compiled manifest or vanilla data).": "当前索引中没有类型为 `{0}` 的匹配定义（可能存在于编译后的 manifest 或原版数据中）。",
+  "No matching definition of the expected declared type in the current index (may exist in a compiled manifest or vanilla data).": "当前索引中没有符合声明类型的匹配定义（可能存在于编译后的 manifest 或原版数据中）。",
+  "No matching definition in the current index (may exist in a compiled manifest or vanilla data).": "当前索引中没有匹配的定义（可能存在于编译后的 manifest 或原版数据中）。",
+  "**Local pipeline id** `{0}`": "**局部管线 id** `{0}`",
+  "RA3 Mod XML: no index available yet.": "RA3 Mod XML：尚无可用索引。",
+  "RA3 Mod XML: no unreferenced assets found.": "RA3 Mod XML：没有找到未引用的资产。",
+  "{0} unreferenced": "{0} 个未引用",
+  "Select an asset type": "选择资产类型",
+  "RA3 Mod XML: no unreferenced {0} assets found.": "RA3 Mod XML：没有找到未引用的 {0} 类型资产。",
+  "{0}: {1} unreferenced": "{0}：{1} 个未引用",
+  "RA3 Mod XML: open an RA3 mod project first to configure the SDK path.": "RA3 Mod XML：请先打开 RA3 Mod 项目再配置 SDK 路径。",
+  "Use detected path": "使用检测到的路径",
+  "Choose manually…": "手动选择…",
+  "Not now": "暂时不用",
+  "RA3 Mod XML could not find a valid SDK path. Detected installed SDK: {0}": "RA3 Mod XML 未找到有效的 SDK 路径。检测到已安装的 SDK：{0}",
+  "Choose SDK folder…": "选择 SDK 文件夹…",
+  "RA3 Mod XML needs the RA3 Mod SDK path to enable vanilla data, manifests and cross-file completion/navigation. Without it, the extension runs in project-only mode.": "RA3 Mod XML 需要 RA3 Mod SDK 路径才能启用原版数据、manifest 与跨文件补全/跳转功能。未设置时插件将以项目模式运行。",
+  "Choose SDK root": "选择 SDK 根目录",
+  "Choose the RA3 Mod SDK root (should contain Schemas/xsd/CnC3Types.xsd)": "选择 RA3 Mod SDK 根目录（应包含 Schemas/xsd/CnC3Types.xsd）",
+  "The selected directory is not a usable RA3 Mod SDK (missing {0}). Please choose again.": "所选目录不是可用的 RA3 Mod SDK（缺少 {0}）。请重新选择。",
+  "that directory": "该目录",
+  "$(warning) RA3 XML: SDK path does not exist": "$(warning) RA3 XML：SDK 路径不存在",
+  "$(warning) RA3 XML: SDK not configured": "$(warning) RA3 XML：未设置 SDK",
+  "$(warning) RA3 XML: SDK path is invalid": "$(warning) RA3 XML：SDK 路径无效",
+  "$(warning) RA3 XML: SDK is incomplete": "$(warning) RA3 XML：SDK 不完整",
+  "The directory configured in ra3modxml.sdkPath does not exist: {0}. Click to reconfigure, or clear ra3modxml.sdkPath to disable vanilla data features.": "ra3modxml.sdkPath 指向的目录不存在：{0}。点击重新设置；或将 ra3modxml.sdkPath 清空以禁用原版数据功能。",
+  "RA3 Mod SDK path is not configured. Click to set it, or clear ra3modxml.sdkPath to disable vanilla data features.": "未配置 RA3 Mod SDK 路径。点击设置；或将 ra3modxml.sdkPath 清空以禁用原版数据功能。",
+  "The directory configured in ra3modxml.sdkPath is not an RA3 Mod SDK root (missing Schemas/xsd/CnC3Types.xsd). Click to reconfigure.": "ra3modxml.sdkPath 指向的目录不是 RA3 Mod SDK 根目录（缺少 Schemas/xsd/CnC3Types.xsd）。点击重新设置。",
+  "RA3 Mod SDK is missing: {0}. Manifest / vanilla source / SDK search path features are unavailable.": "RA3 Mod SDK 缺少：{0}。manifest / 原版源码 / SDK 搜索路径等功能不可用。",
+  "RA3 Mod XML: SDK path set to {0}; rebuilding the index…": "RA3 Mod XML：SDK 路径已设置为 {0}，正在重建索引…",
+  "$(sync~spin) RA3 XML: indexing…": "$(sync~spin) RA3 XML：正在建索引…",
+  "art cache": "美术缓存",
+  "$(error) RA3 XML: indexing failed (stale index kept)": "$(error) RA3 XML：索引失败（保留旧索引）",
+  "$(error) RA3 XML: indexing failed": "$(error) RA3 XML：索引失败",
+  "$(sync~spin) RA3 XML: validating {0} {1}/{2}…": "$(sync~spin) RA3 XML：正在校验 {0} {1}/{2}…",
+  "RA3 Mod XML cache report": "RA3 Mod XML 缓存报告",
+  "Projects: {0}": "项目数：{0}",
+  "  builds: #{0} (last trigger: {1})": "  构建次数：#{0}（上次触发：{1}）",
+  "  disk cache: {0}": "  磁盘缓存：{0}",
+  "not loaded": "未加载",
+  "    file: {0}": "    文件：{0}",
+  "{0} KB": "{0} KB",
+  "missing": "缺失",
+  "    last load: file={0} keyMatched={1} loaded={2} validated={3} dropped={4} (load {5}ms, validate {6}ms)": "    最近加载：file={0} keyMatched={1} loaded={2} validated={3} dropped={4}（加载 {5}ms，校验 {6}ms）",
+  "    saved after last build: {0}": "    上次构建后已保存：{0}",
+  "yes": "是",
+  "no": "否",
+  "    last build: phase={0} assets={1} snapshotHits={2} snapshotFallbacks={3} recordsCacheHits={4} shallowCacheHits={5}": "    最近构建：阶段={0} 资产={1} snapshotHits={2} snapshotFallbacks={3} recordsCacheHits={4} shallowCacheHits={5}",
+  "Shared in-memory: {0} record entries · {1} documents ({2} elements) · {3} include resolutions": "共享内存：{0} 条记录 · {1} 个文档（{2} 个元素）· {3} 条 include 解析",
+  "$(symbol-misc) RA3 XML: {0} project(s) — open a mod XML to index": "$(symbol-misc) RA3 XML：{0} 个项目——打开一个 Mod XML 开始建索引",
+  "$(symbol-misc) RA3 XML: {0} · {1} assets{2}": "$(symbol-misc) RA3 XML：{0} · {1} 个资产{2}",
+  "{0} files indexed ({1} parsed, {2} art assets shallow-scanned, {3}s)": "{0} 个文件已索引（解析 {1}，浅扫描美术资产 {2}，耗时 {3} 秒）",
+  "{0} assets ({1} from {2} manifests)": "{0} 个资产（其中 {1} 来自 {2} 个 manifest）",
+  "{0} reference sites": "{0} 个引用位置",
+  "{0} defines, {1} streams, {2} include candidates": "{0} 个常量，{1} 条流，{2} 个 include 候选",
+  "Disk cache: load {0}s, validate {1}s ({2}/{3} ok)": "磁盘缓存：加载 {0} 秒，校验 {1} 秒（{2}/{3} 正常）",
+  "Duplicate id \"{0}\" for <{1}> (also defined on line {2})": "重复 id \"{0}\"：<{1}>（也定义在第 {2} 行）",
+  "Duplicate id \"{0}\" for <{1}> (also defined in {2})": "重复 id \"{0}\"：<{1}>（也定义在 {2}）",
+  "Unknown attribute \"{0}\" for <{1}>": "未知属性 \"{0}\"：<{1}>",
+  "Undefined define \"${0}\"": "未定义常量 \"${0}\"",
+  "Invalid Include type \"{0}\" (expected reference, instance or all)": "无效的 Include 类型 \"{0}\"（应为 reference、instance 或 all）",
+  "Reference \"{0}\" has no definition of type `{1}` (ids with the same name exist for other types)": "引用 \"{0}\" 没有类型为 `{1}` 的定义（其他类型存在同名 id）",
+  "Reference \"{0}\" has no definition of the expected declared type (ids with the same name exist for other types)": "引用 \"{0}\" 没有符合声明类型的定义（其他类型存在同名 id）",
+  "Reference \"{0}\" has no matching definition (ids with the same name exist for other types)": "引用 \"{0}\" 没有匹配的定义（其他类型存在同名 id）",
+  "Unresolved reference \"{0}\" (not found in the current index)": "无法解析的引用 \"{0}\"（当前索引中未找到）"
+}

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "ra3-mod-xml",
-  "version": "0.1.9",
+  "version": "0.1.21",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "ra3-mod-xml",
-      "version": "0.1.9",
+      "version": "0.1.21",
       "license": "MIT",
       "dependencies": {
         "fast-xml-parser": "^4.5.0"

package.json

@@ -1,10 +1,16 @@
 {
   "name": "ra3-mod-xml",
-  "displayName": "RA3 Mod XML",
-  "description": "Red Alert 3 Mod XML tooling: syntax highlighting, completions, reference navigation and diagnostics for SAGE/BinaryAssetBuilder XML.",
-  "version": "0.1.15",
-  "publisher": "ra3-mod-xml",
-  "license": "MIT",
+  "displayName": "%ra3modxml.displayName%",
+  "description": "%ra3modxml.description%",
+  "version": "0.1.22",
+  "publisher": "lanyi",
+  "license": "SEE LICENSE IN LICENSE",
+  "repository": {
+    "type": "git",
+    "url": "https://git.ra3battle.cn/RA3CoronaDevelopers/Ra3ModXmlExt.git"
+  },
+  "homepage": "https://git.ra3battle.cn/RA3CoronaDevelopers/Ra3ModXmlExt",
+  "l10n": "./l10n",
   "engines": {
     "vscode": "^1.85.0"
   },
@@ -23,9 +29,13 @@
   "main": "./dist/extension.js",
   "activationEvents": [
     "onLanguage:xml",
+    "workspaceContains:Mod.xml",
+    "workspaceContains:additionalmaps/mapmetadata_*.xml",
     "workspaceContains:**/Data/Mod.xml",
+    "workspaceContains:**/Data/additionalmaps/mapmetadata_*.xml",
     "workspaceContains:**/mod.babproj",
-    "workspaceContains:**/*.babproj"
+    "workspaceContains:**/*.babproj",
+    "onCommand:ra3modxml.configureSdkPath"
   ],
   "contributes": {
     "grammars": [
@@ -38,17 +48,17 @@
       }
     ],
     "configuration": {
-      "title": "RA3 Mod XML",
+      "title": "%ra3modxml.configuration.title%",
       "properties": {
         "ra3modxml.sdkPath": {
           "type": "string",
-          "default": "C:\\Apps\\RA3-MODSDK-X",
-          "description": "Path to the RA3 Mod SDK root. Used to resolve DATA:/ART:/AUDIO: includes and to index vanilla SageXml sources."
+          "default": "",
+          "description": "%ra3modxml.sdkPath.description%"
         },
         "ra3modxml.indexSageXml": {
           "type": "boolean",
           "default": true,
-          "description": "Index vanilla game XML sources shipped with the SDK (SageXml) so completions/references can resolve vanilla asset ids."
+          "description": "%ra3modxml.indexSageXml.description%"
         },
         "ra3modxml.reportUnresolvedReferences": {
           "type": "string",
@@ -58,12 +68,12 @@
             "none"
           ],
           "default": "warning",
-          "description": "Severity for attribute references (CommandSet=..., inheritFrom=...) that cannot be resolved in the index. The index covers mod XML sources, SDK SageXml sources and compiled manifests."
+          "description": "%ra3modxml.reportUnresolvedReferences.description%"
         },
         "ra3modxml.diagnoseUnknownElements": {
           "type": "boolean",
           "default": true,
-          "description": "Report element/attribute names that are not known from the bundled XSD model."
+          "description": "%ra3modxml.diagnoseUnknownElements.description%"
         },
         "ra3modxml.definitionMode": {
           "type": "string",
@@ -72,7 +82,7 @@
             "project-only"
           ],
           "default": "all",
-          "description": "Go-to-definition candidates: 'all' lists the mod definition together with any vanilla (SDK/manifest) definitions (mod first); 'project-only' jumps directly to the mod definition and skips vanilla candidates when the id is defined in the project."
+          "description": "%ra3modxml.definitionMode.description%"
         },
         "ra3modxml.additionalDataSearchPaths": {
           "type": "array",
@@ -80,26 +90,47 @@
             "type": "string"
           },
           "default": [],
-          "description": "Extra absolute directories appended to the DATA: search path (checked after the project folders)."
+          "description": "%ra3modxml.additionalDataSearchPaths.description%"
         }
       }
     },
     "commands": [
       {
         "command": "ra3modxml.reindex",
-        "title": "RA3 Mod XML: Re-index workspace"
+        "title": "%ra3modxml.command.reindex.title%"
       },
       {
         "command": "ra3modxml.openIndexReport",
-        "title": "RA3 Mod XML: Show index report"
+        "title": "%ra3modxml.command.openIndexReport.title%"
       },
       {
         "command": "ra3modxml.clearCache",
-        "title": "RA3 Mod XML: Clear caches and rebuild"
+        "title": "%ra3modxml.command.clearCache.title%"
+      },
+      {
+        "command": "ra3modxml.configureSdkPath",
+        "title": "%ra3modxml.command.configureSdkPath.title%"
       },
       {
         "command": "ra3modxml.showCacheReport",
-        "title": "RA3 Mod XML: Show cache report"
+        "title": "%ra3modxml.command.showCacheReport.title%"
+      },
+      {
+        "command": "ra3modxml.findUnreferencedAssets",
+        "title": "%ra3modxml.command.findUnreferencedAssets.title%"
+      },
+      {
+        "command": "ra3modxml.findUnreferencedAssetsOfType",
+        "title": "%ra3modxml.command.findUnreferencedAssetsOfType.title%"
+      }
+    ]
+  },
+  "menus": {
+    "editor/context": [
+      {
+        "command": "ra3modxml.findUnreferencedAssetsOfType",
+        "when": "editorLangId == xml && ra3modxml.active",
+        "group": "navigation@50"
       }
     ]
   },
@@ -109,7 +140,8 @@
     "generate-model": "node tools/xsd-to-model.mjs",
     "pretest": "tsc",
     "test": "node --test \"test/*.test.mjs\"",
-    "package": "npm run build && vsce package"
+    "package": "npm run build && vsce package --no-rewrite-relative-links",
+    "publish": "npm run build && vsce publish --no-rewrite-relative-links"
   },
   "dependencies": {
     "fast-xml-parser": "^4.5.0"

package.nls.json

@@ -0,0 +1,18 @@
+{
+  "ra3modxml.displayName": "RA3 Mod XML",
+  "ra3modxml.description": "Red Alert 3 Mod XML tooling: syntax highlighting, completions, reference navigation and diagnostics for SAGE/BinaryAssetBuilder XML.",
+  "ra3modxml.configuration.title": "RA3 Mod XML",
+  "ra3modxml.sdkPath.description": "Path to the RA3 Mod SDK root. Used to resolve DATA:/ART:/AUDIO: includes and to index vanilla SageXml sources. Leave empty to disable vanilla SDK features (project-only mode).",
+  "ra3modxml.indexSageXml.description": "Index vanilla game XML sources shipped with the SDK (SageXml) so completions/references can resolve vanilla asset ids.",
+  "ra3modxml.reportUnresolvedReferences.description": "Severity for attribute references (CommandSet=..., inheritFrom=...) that cannot be resolved in the index. The index covers mod XML sources, SDK SageXml sources and compiled manifests.",
+  "ra3modxml.diagnoseUnknownElements.description": "Report element/attribute names that are not known from the bundled XSD model.",
+  "ra3modxml.definitionMode.description": "Go-to-definition candidates: 'all' lists the mod definition together with any vanilla (SDK/manifest) definitions (mod first); 'project-only' jumps directly to the mod definition and skips vanilla candidates when the id is defined in the project.",
+  "ra3modxml.additionalDataSearchPaths.description": "Extra absolute directories appended to the DATA: search path (checked after the project folders).",
+  "ra3modxml.command.reindex.title": "RA3 Mod XML: Re-index workspace",
+  "ra3modxml.command.openIndexReport.title": "RA3 Mod XML: Show index report",
+  "ra3modxml.command.clearCache.title": "RA3 Mod XML: Clear caches and rebuild",
+  "ra3modxml.command.configureSdkPath.title": "RA3 Mod XML: Configure SDK path…",
+  "ra3modxml.command.showCacheReport.title": "RA3 Mod XML: Show cache report",
+  "ra3modxml.command.findUnreferencedAssets.title": "RA3 Mod XML: Find unreferenced assets…",
+  "ra3modxml.command.findUnreferencedAssetsOfType.title": "RA3 Mod XML: Find unreferenced assets of this type"
+}

package.nls.zh-cn.json

@@ -0,0 +1,18 @@
+{
+  "ra3modxml.displayName": "RA3 Mod XML",
+  "ra3modxml.description": "红警 3 Mod XML 工具：为 SAGE/BinaryAssetBuilder XML 提供语法高亮、自动补全、引用跳转与诊断。",
+  "ra3modxml.configuration.title": "RA3 Mod XML",
+  "ra3modxml.sdkPath.description": "RA3 Mod SDK 根目录路径。用于解析 DATA:/ART:/AUDIO: include，并索引原版 SageXml 源码。留空可禁用 SDK 原版功能（仅项目模式）。",
+  "ra3modxml.indexSageXml.description": "索引 SDK 附带的原版游戏 XML 源码（SageXml），使补全/引用可以解析原版资产 id。",
+  "ra3modxml.reportUnresolvedReferences.description": "索引中无法解析的属性引用（CommandSet=...、inheritFrom=...）的诊断级别。索引覆盖 mod XML 源码、SDK SageXml 源码和编译后的 manifest。",
+  "ra3modxml.diagnoseUnknownElements.description": "报告不在内置 XSD 模型中的元素/属性名。",
+  "ra3modxml.definitionMode.description": "跳转定义候选项：'all' 同时列出 mod 定义与原版（SDK/manifest）定义（mod 优先）；'project-only' 在项目内已定义该 id 时直接跳转 mod 定义并跳过原版候选。",
+  "ra3modxml.additionalDataSearchPaths.description": "追加到 DATA: 搜索路径末尾的额外绝对目录（在项目文件夹之后检查）。",
+  "ra3modxml.command.reindex.title": "RA3 Mod XML: 重建索引",
+  "ra3modxml.command.openIndexReport.title": "RA3 Mod XML: 显示索引报告",
+  "ra3modxml.command.clearCache.title": "RA3 Mod XML: 清空缓存并重建",
+  "ra3modxml.command.configureSdkPath.title": "RA3 Mod XML: 配置 SDK 路径…",
+  "ra3modxml.command.showCacheReport.title": "RA3 Mod XML: 显示缓存报告",
+  "ra3modxml.command.findUnreferencedAssets.title": "RA3 Mod XML: 查找未引用的资产…",
+  "ra3modxml.command.findUnreferencedAssetsOfType.title": "RA3 Mod XML: 查找该类型的未引用资产"
+}

src/extension.ts

@@ -1,5 +1,6 @@
 import * as vscode from "vscode";
 import { ModWorkspace } from "./workspace";
+import { SdkSetup } from "./sdkSetup";
 import { Ra3CompletionProvider } from "./features/completion";
 import { Ra3HoverProvider } from "./features/hover";
 import {
@@ -8,16 +9,26 @@ import {
   Ra3DocumentSymbolProvider,
   Ra3ReferenceProvider,
 } from "./features/navigation";
+import { Ra3CodeLensProvider } from "./features/codeLens";
+import { showReferencesForDef } from "./features/references";
+import {
+  findUnreferencedAssets,
+  findUnreferencedAssetsOfType,
+} from "./features/unreferenced";
 import { Ra3Diagnostics } from "./features/diagnostics";
 import {
   Ra3SemanticTokensProvider,
   RA3_SEMANTIC_TOKENS_LEGEND,
 } from "./features/semanticTokens";
+import { t } from "./localize";
 
 const XML_SELECTOR: vscode.DocumentSelector = [{ language: "xml" }];
+/** Safety-net refresh interval while a rebuild is running. */
+const CODELENS_RETRY_INTERVAL_MS = 2000;
 
 export function activate(context: vscode.ExtensionContext): void {
   const ws = new ModWorkspace(context);
+  const sdkSetup = new SdkSetup(context, () => ws);
   context.subscriptions.push(ws);
 
   context.subscriptions.push(
@@ -60,6 +71,36 @@ export function activate(context: vscode.ExtensionContext): void {
       new Ra3DocumentSymbolProvider(ws),
     ),
   );
+  const codeLensProvider = new Ra3CodeLensProvider(ws);
+  context.subscriptions.push(
+    vscode.languages.registerCodeLensProvider(XML_SELECTOR, codeLensProvider),
+  );
+  // Safety net: while a rebuild is running, re-fire the CodeLens refresh
+  // every 2s. VS Code sometimes coalesces/skips a single refresh event, so
+  // the phase-A snapshot may not repaint until the final one; periodic
+  // refreshes (bounded by the build duration) make the early counts appear.
+  let codeLensRetryTimer: ReturnType<typeof setInterval> | null = null;
+  const startCodeLensRetry = (): void => {
+    if (codeLensRetryTimer) return;
+    codeLensRetryTimer = setInterval(() => {
+      if (!ws.isBuilding) {
+        if (codeLensRetryTimer) {
+          clearInterval(codeLensRetryTimer);
+          codeLensRetryTimer = null;
+          ws.log("[codelens] retry stopped (build finished)");
+        }
+        return;
+      }
+      codeLensProvider.refresh();
+    }, CODELENS_RETRY_INTERVAL_MS);
+    ws.log("[codelens] retry started");
+  };
+  ws.onBuildStart = startCodeLensRetry;
+  context.subscriptions.push({
+    dispose: () => {
+      if (codeLensRetryTimer) clearInterval(codeLensRetryTimer);
+    },
+  });
   context.subscriptions.push(
     vscode.languages.registerDocumentSemanticTokensProvider(
       XML_SELECTOR,
@@ -73,6 +114,15 @@ export function activate(context: vscode.ExtensionContext): void {
   // Refresh diagnostics for every open XML document whenever a new index
   // snapshot is published (XML phase, art phase, stale/final rebuild).
   ws.onIndexUpdate = () => {
+    codeLensProvider.resetSuppressionLog();
+    codeLensProvider.refresh();
+    void vscode.commands.executeCommand("editor.action.codeLens.refresh");
+    const idx = ws.activeIndex();
+    if (idx) {
+      ws.log(
+        `[codelens] refresh (project=${idx.stats.projectDir}, phase=${idx.phase}, assets=${idx.stats.assetCount}, complete=${idx.complete}, stale=${idx.stale === true})`,
+      );
+    }
     for (const doc of vscode.workspace.textDocuments) {
       if (doc.languageId === "xml") void diagnostics.update(doc);
     }
@@ -100,7 +150,17 @@ export function activate(context: vscode.ExtensionContext): void {
   );
   context.subscriptions.push(
     vscode.workspace.onDidOpenTextDocument((doc) => {
-      if (doc.languageId === "xml") void diagnostics.update(doc);
+      if (doc.languageId === "xml") {
+        ws.onDocumentOpened(doc);
+        void sdkSetup.evaluate(ws);
+        void diagnostics.update(doc);
+      }
+    }),
+  );
+  context.subscriptions.push(
+    vscode.workspace.onDidChangeWorkspaceFolders(() => {
+      ws.onWorkspaceFoldersChanged();
+      void sdkSetup.evaluate(ws);
     }),
   );
   context.subscriptions.push(
@@ -118,7 +178,7 @@ export function activate(context: vscode.ExtensionContext): void {
     vscode.workspace.onDidSaveTextDocument((doc) => {
       if (doc.languageId !== "xml") return;
       ws.invalidate(doc.uri.fsPath);
-      ws.scheduleRebuild("save");
+      ws.scheduleRebuild("save", doc);
       void diagnostics.update(doc);
     }),
   );
@@ -128,7 +188,8 @@ export function activate(context: vscode.ExtensionContext): void {
         // Search paths / builtmods locations may have changed: cached include
         // resolutions and manifest lookups are no longer valid.
         ws.invalidateExistence();
-        ws.scheduleRebuild("config");
+        ws.scheduleRebuildAll("config");
+        void sdkSetup.evaluate(ws);
       }
     }),
   );
@@ -143,7 +204,7 @@ export function activate(context: vscode.ExtensionContext): void {
     vscode.commands.registerCommand("ra3modxml.clearCache", () => {
       ws.clearCaches();
       void vscode.window.showInformationMessage(
-        "RA3 Mod XML: caches cleared; rebuilding from scratch…",
+        t("RA3 Mod XML: caches cleared; rebuilding from scratch…"),
       );
     }),
   );
@@ -156,38 +217,93 @@ export function activate(context: vscode.ExtensionContext): void {
   );
   context.subscriptions.push(
     vscode.commands.registerCommand("ra3modxml.openIndexReport", () => {
-      const idx = ws.index;
+      const idx = ws.activeIndex();
       if (!idx) {
         if (ws.isBuilding) {
           void vscode.window.showInformationMessage(
-            "RA3 Mod XML: index is still building — check the status bar. " +
-              "Most features become available after the XML phase.",
+            t(
+              "RA3 Mod XML: index is still building — check the status bar. Most features become available after the XML phase.",
+            ),
+          );
+          return;
+        }
+        if (ws.getProjectRoots().length) {
+          void vscode.window.showInformationMessage(
+            t(
+              "RA3 Mod XML: no index for the active project yet — open a mod XML document to start indexing.",
+            ),
           );
           return;
         }
         void vscode.window.showInformationMessage(
-          "RA3 Mod XML: no index available. Open a workspace that contains Data/Mod.xml.",
+          t(
+            "RA3 Mod XML: no index available. Open a workspace that contains Data/Mod.xml, Data/additionalmaps/mapmetadata_*.xml or a mod folder.",
+          ),
         );
         return;
       }
       const s = idx.stats;
-      const stale = idx.stale ? " (stale)" : "";
+      const stale = idx.stale ? ` ${t("(stale)")}` : "";
       void vscode.window.showInformationMessage(
-        `RA3 Mod XML index\n` +
-          `Project: ${s.projectDir}\n` +
-          `Files: ${s.indexedFiles} (${s.parsedFiles} parsed, ${s.shallowScannedFiles} shallow-scanned, ${s.shallowCacheHits + s.recordsCacheHits} cache hits)\n` +
-          `Assets: ${s.assetCount} (${s.manifestAssetCount} from ${s.manifestFiles} manifests)\n` +
-          `Defines: ${s.defineCount} · Streams: ${s.streams} · Candidates: ${s.sourceCandidates}\n` +
-          `Phase: ${s.phase} · Complete: ${s.complete}${stale}\n` +
-          `Build #${ws.buildCount} (trigger: ${ws.lastTrigger})\n` +
-          `Indexed in ${(s.elapsedMs / 1000).toFixed(1)}s\n` +
-          `XML walk: ${(s.walkMs / 1000).toFixed(1)}s · Candidates: ${(s.candidatesMs / 1000).toFixed(1)}s · Art scan: ${(s.artScanMs / 1000).toFixed(1)}s`,
+        [
+          t("RA3 Mod XML index"),
+          t("Project: {0}", s.projectDir),
+          t(
+            "Files: {0} ({1} parsed, {2} shallow-scanned, {3} cache hits)",
+            s.indexedFiles,
+            s.parsedFiles,
+            s.shallowScannedFiles,
+            s.shallowCacheHits + s.recordsCacheHits,
+          ),
+          t(
+            "Assets: {0} ({1} from {2} manifests)",
+            s.assetCount,
+            s.manifestAssetCount,
+            s.manifestFiles,
+          ),
+          t("References: {0}", s.referenceCount),
+          t(
+            "Defines: {0} · Streams: {1} · Candidates: {2}",
+            s.defineCount,
+            s.streams,
+            s.sourceCandidates,
+          ),
+          t("Phase: {0} · Complete: {1}{2}", s.phase, s.complete, stale),
+          t("Build #{0} (trigger: {1})", ws.buildCount, ws.lastTrigger),
+          t("Indexed in {0}s", (s.elapsedMs / 1000).toFixed(1)),
+          t(
+            "XML walk: {0}s · Candidates: {1}s · Art scan: {2}s",
+            (s.walkMs / 1000).toFixed(1),
+            (s.candidatesMs / 1000).toFixed(1),
+            (s.artScanMs / 1000).toFixed(1),
+          ),
+        ].join("\n"),
         { modal: false },
       );
     }),
   );
+  context.subscriptions.push(
+    vscode.commands.registerCommand(
+      "ra3modxml.showReferences",
+      (args: Parameters<typeof showReferencesForDef>[1]) =>
+        void showReferencesForDef(ws, args),
+    ),
+  );
+  context.subscriptions.push(
+    vscode.commands.registerCommand(
+      "ra3modxml.findUnreferencedAssets",
+      () => void findUnreferencedAssets(ws),
+    ),
+  );
+  context.subscriptions.push(
+    vscode.commands.registerCommand(
+      "ra3modxml.findUnreferencedAssetsOfType",
+      () => void findUnreferencedAssetsOfType(ws),
+    ),
+  );
 
-  void ws.initialize();
+  void sdkSetup.evaluate(ws);
+  void ws.initialize().then(() => void sdkSetup.evaluate(ws));
 }
 
 export function deactivate(): void {

src/features/codeLens.ts

@@ -0,0 +1,150 @@
+import * as vscode from "vscode";
+import { LineMap, parseXml } from "../language/xmlParser";
+import { resolveElementType } from "../language/typeContext";
+import { isReferenceTargetType } from "../indexer/refs";
+import { scheduleRebuildIfRecordsDesync } from "../indexer/referenceIndex";
+import type { ModIndex } from "../indexer/types";
+import {
+  collectReferenceSites,
+  definitionsForReference,
+  type ShowReferencesArgs,
+} from "./references";
+import type { ModWorkspace } from "../workspace";
+import { t } from "../localize";
+
+/** Never build a DOM for huge files just to show counts (w3x safety). */
+const MAX_CODELENS_TEXT = 4 * 1024 * 1024;
+
+/**
+ * CodeLens reference counts on top-level assets.
+ *
+ * Only types that are reference targets by design get a lens (settings, map
+ * metadata, w3x sub-assets etc. would otherwise show a permanent, misleading
+ * "0 references"). Zero is still shown for the meaningful types: that is the
+ * signal users can click to inspect an unused asset.
+ */
+export class Ra3CodeLensProvider implements vscode.CodeLensProvider {
+  private changeEmitter = new vscode.EventEmitter<void>();
+  readonly onDidChangeCodeLenses = this.changeEmitter.event;
+  /** URIs for which "no global snapshot yet" has already been logged. */
+  private suppressedLogged = new Set<string>();
+
+  constructor(private ws: ModWorkspace) {}
+
+  /** Tells VS Code to re-query lenses (used after index snapshots). */
+  refresh(): void {
+    this.changeEmitter.fire();
+  }
+
+  /** Called when a new snapshot is published; allows re-logging suppression. */
+  resetSuppressionLog(): void {
+    this.suppressedLogged.clear();
+  }
+
+  async provideCodeLenses(
+    document: vscode.TextDocument,
+    _token: vscode.CancellationToken,
+  ): Promise<vscode.CodeLens[]> {
+    if (!this.ws.isRa3Workspace()) return [];
+    const startedAt = Date.now();
+    const uri = document.uri.toString();
+    let idx: ModIndex | null = null;
+    try {
+      idx = (await this.ws.getCodeLensScope(document)).merged;
+    } catch (err) {
+      this.ws.log(
+        `[codelens] scope error for ${uri}: ${err instanceof Error ? err.message : String(err)}`,
+      );
+      return [];
+    }
+    if (!idx) return [];
+    // Before the first global snapshot exists the merged index is a
+    // local-only index (stats.indexedFiles === 0) with no real references.
+    // Rendering "0 references" then would be misleading, so wait until a
+    // snapshot is published. Once a snapshot exists, "0" is meaningful and
+    // must still be displayed for reference-target types.
+    if (!idx.complete && idx.stats.indexedFiles === 0) {
+      if (!this.suppressedLogged.has(uri)) {
+        this.suppressedLogged.add(uri);
+        this.ws.log(
+          `[codelens] suppressed for ${uri} (no global snapshot yet)`,
+        );
+      }
+      return [];
+    }
+    const text = document.getText();
+    if (text.length > MAX_CODELENS_TEXT) {
+      this.ws.log(
+        `[codelens] skipped for ${uri} (${text.length} bytes > ${MAX_CODELENS_TEXT})`,
+      );
+      return [];
+    }
+    scheduleRebuildIfRecordsDesync(
+      this.ws.recordsSyncSurfaceFor(document),
+      document,
+    );
+    const doc = parseXml(text);
+    const root = doc.root;
+    if (!root) return [];
+    const lineMap = new LineMap(text);
+    const lenses: vscode.CodeLens[] = [];
+
+    for (const child of root.children) {
+      const local = localName(child.name);
+      if (local === "Tags" || local === "Includes" || local === "Defines") continue;
+      const idAttr = child.attrs.find((a) => a.name === "id");
+      if (!idAttr?.hasValue) continue;
+      const elType = resolveElementType(child);
+      if (!isReferenceTargetType(elType)) continue;
+
+      const id = idAttr.value;
+      const line = lineMap.positionAt(idAttr.valueStart).line + 1;
+      // Same definition union as Find All References: document-local
+      // overlay + every same-id definition in the global index. This keeps
+      // the lens count and the references peek consistent even when the
+      // file itself is not part of the global include graph.
+      const defs = definitionsForReference(idx, {
+        id,
+        refType: null,
+        selfType: null,
+      });
+      const count = collectReferenceSites(idx, defs).length;
+      const range = new vscode.Range(
+        document.positionAt(child.start),
+        document.positionAt(child.startTagEnd),
+      );
+      const args: ShowReferencesArgs = {
+        uri: document.uri,
+        position: document.positionAt(idAttr.valueStart),
+        id,
+        type: local,
+        file: document.uri.fsPath,
+        line,
+      };
+      lenses.push(
+        new vscode.CodeLens(range, {
+          title:
+            count === 0
+              ? t("0 references")
+              : count === 1
+                ? t("1 reference")
+                : t("{0} references", count),
+          command: "ra3modxml.showReferences",
+          arguments: [args],
+        }),
+      );
+    }
+    const elapsed = Date.now() - startedAt;
+    if (elapsed > 250) {
+      this.ws.log(
+        `[codelens] slow provider for ${uri}: ${lenses.length} lenses in ${elapsed}ms`,
+      );
+    }
+    return lenses;
+  }
+}
+
+function localName(tag: string): string {
+  const idx = tag.lastIndexOf(":");
+  return idx >= 0 ? tag.slice(idx + 1) : tag;
+}

src/features/completion.ts

@@ -17,6 +17,7 @@ import {
 } from "../indexer/logicalTree";
 import type { ModWorkspace } from "../workspace";
 import type { ModIndex, AssetDef } from "../indexer/types";
+import { t } from "../localize";
 
 const MAX_VALUE_ITEMS = 400;
 
@@ -79,9 +80,9 @@ export class Ra3CompletionProvider implements vscode.CompletionItemProvider {
       const docText =
         child.doc ||
         (info?.kind === "complex" ? info.doc : "") ||
-        (type ? `Type: ${type}` : "");
+        (type ? t("Type: {0}", type) : "");
       item.documentation = docText ? new vscode.MarkdownString(docText) : undefined;
-      item.detail = type ? `RA3 XML · ${type}` : "RA3 XML";
+      item.detail = type ? t("RA3 XML · {0}", type) : t("RA3 XML");
       item.insertText = this.elementSnippet(child.name, type, ctx.element == null);
       items.push(item);
     }
@@ -93,7 +94,11 @@ export class Ra3CompletionProvider implements vscode.CompletionItemProvider {
   ): { name: string; type: string | null; doc: string }[] {
     if (!parent) {
       return [
-        { name: "AssetDeclaration", type: null, doc: "Root element of every RA3 asset file" },
+        {
+          name: "AssetDeclaration",
+          type: null,
+          doc: t("Root element of every RA3 asset file"),
+        },
       ];
     }
     const parentType = resolveElementType(parent);
@@ -160,12 +165,16 @@ export class Ra3CompletionProvider implements vscode.CompletionItemProvider {
       item.sortText = attr.required ? "0" + attr.name : "1" + attr.name;
       const md = new vscode.MarkdownString();
       if (attr.doc) md.appendMarkdown(attr.doc + "\n\n");
-      if (attr.required) md.appendMarkdown(`**Required**  \n`);
-      if (attr.refType) md.appendMarkdown(`References: \`${attr.refType}\`  \n`);
+      if (attr.required) md.appendMarkdown(`${t("**Required**")}  \n`);
+      if (attr.refType) {
+        md.appendMarkdown(`${t("References: `{0}`", attr.refType)}  \n`);
+      }
       if (attr.enumValues.length)
-        md.appendMarkdown(`Values: ${attr.enumValues.join(", ")}  \n`);
-      if (attr.default != null) md.appendMarkdown(`Default: \`${attr.default}\`  \n`);
-      md.appendMarkdown(`Type: \`${attr.type ?? "string"}\``);
+        md.appendMarkdown(`${t("Values: {0}", attr.enumValues.join(", "))}  \n`);
+      if (attr.default != null) {
+        md.appendMarkdown(`${t("Default: `{0}`", attr.default)}  \n`);
+      }
+      md.appendMarkdown(t("Type: `{0}`", attr.type ?? "string"));
       item.documentation = md;
       const value = this.attributeValuePlaceholder(attr, el);
       item.insertText = new vscode.SnippetString(
@@ -174,7 +183,7 @@ export class Ra3CompletionProvider implements vscode.CompletionItemProvider {
       if (value.trigger) {
         item.command = {
           command: "editor.action.triggerSuggest",
-          title: "Suggest attribute values",
+          title: t("Suggest attribute values"),
         };
       }
       items.push(item);
@@ -187,13 +196,15 @@ export class Ra3CompletionProvider implements vscode.CompletionItemProvider {
       j.insertText = new vscode.SnippetString(
         layout.prefix + 'xai:joinAction="$1"',
       );
-      j.detail = "Instance join action";
+      j.detail = t("Instance join action");
       j.documentation = new vscode.MarkdownString(
-        "Controls how this element merges with the inherited definition: `Replace` or `Remove`.",
+        t(
+          "Controls how this element merges with the inherited definition: `Replace` or `Remove`.",
+        ),
       );
       j.command = {
         command: "editor.action.triggerSuggest",
-        title: "Suggest attribute values",
+        title: t("Suggest attribute values"),
       };
       items.push(j);
     }
@@ -203,7 +214,7 @@ export class Ra3CompletionProvider implements vscode.CompletionItemProvider {
       ns.insertText = new vscode.SnippetString(
         layout.prefix + 'xmlns:xai="uri:ea.com:eala:asset:instance"',
       );
-      ns.detail = "xai namespace";
+      ns.detail = t("xai namespace");
       items.push(ns);
     }
     return items;
@@ -312,7 +323,7 @@ export class Ra3CompletionProvider implements vscode.CompletionItemProvider {
     // Include type / source
     if (isInclude && attrName === "type") {
       return ["reference", "instance", "all"].map((v) =>
-        make(v, vscode.CompletionItemKind.EnumMember, "Include type"),
+        make(v, vscode.CompletionItemKind.EnumMember, t("Include type")),
       );
     }
     if (isInclude && attrName === "source") {
@@ -321,7 +332,7 @@ export class Ra3CompletionProvider implements vscode.CompletionItemProvider {
     }
     if (attrName === "xai:joinaction" || attrName === "joinaction") {
       return ["Replace", "Remove"].map((v) =>
-        make(v, vscode.CompletionItemKind.EnumMember, "xai:joinAction"),
+        make(v, vscode.CompletionItemKind.EnumMember, t("xai:joinAction")),
       );
     }
 
@@ -348,12 +359,18 @@ export class Ra3CompletionProvider implements vscode.CompletionItemProvider {
       }
       return attrInfo.enumValues
         .filter((v) => v.toLowerCase().startsWith(prefix.toLowerCase()))
-        .map((v) => make(v, vscode.CompletionItemKind.EnumMember, attrInfo.type ?? "enum"));
+        .map((v) =>
+          make(
+            v,
+            vscode.CompletionItemKind.EnumMember,
+            attrInfo.type ?? t("enum"),
+          ),
+        );
     }
     if (attrInfo?.isBoolean) {
       return ["true", "false"]
         .filter((v) => v.startsWith(prefix.toLowerCase()))
-        .map((v) => make(v, vscode.CompletionItemKind.Value, "boolean"));
+        .map((v) => make(v, vscode.CompletionItemKind.Value, t("boolean")));
     }
     if (idx && attrInfo?.allowsDefine) {
       return this.defineItems(idx, prefix, make);
@@ -412,7 +429,7 @@ export class Ra3CompletionProvider implements vscode.CompletionItemProvider {
       make(
         v,
         vscode.CompletionItemKind.EnumMember,
-        attrInfo.type ?? "enum",
+        attrInfo.type ?? t("enum"),
         undefined,
         range,
         append ? ` ${v}` : v,
@@ -436,10 +453,14 @@ export class Ra3CompletionProvider implements vscode.CompletionItemProvider {
         a.source.localeCompare(b.source),
     );
     const items = candidates.map((c) => {
-      const item = make(c.source, vscode.CompletionItemKind.File, "Include source");
+      const item = make(
+        c.source,
+        vscode.CompletionItemKind.File,
+        t("Include source"),
+      );
       item.detail = c.path;
       item.documentation = new vscode.MarkdownString(
-        `\`${c.prefix ?? "relative"}\` · ${c.path}`,
+        t("`{0}` · {1}", c.prefix ?? t("relative"), c.path),
       );
       return item;
     });
@@ -454,20 +475,41 @@ export class Ra3CompletionProvider implements vscode.CompletionItemProvider {
     make: (label: string, kind: vscode.CompletionItemKind, detail: string, doc?: string) => vscode.CompletionItem,
   ): vscode.CompletionItem[] | vscode.CompletionList<vscode.CompletionItem> {
     const lower = prefix.toLowerCase();
-    const scored: { def: AssetDef; score: number }[] = [];
+    // Deduplicate by id: the same asset can be defined in several places at
+    // once (current file's local overlay + global index, project XML +
+    // compiled manifest, or an override). Showing one completion entry per
+    // id is enough; the other definitions are listed in the documentation.
+    // Definitions are still de-duplicated by (type, id, file, line) so the
+    // same record found through both local and global maps is not repeated
+    // inside a single entry either.
     const seen = new Set<string>();
+    const byId = new Map<
+      string,
+      { best: { def: AssetDef; score: number }; extras: AssetDef[] }
+    >();
 
     const consider = (def: AssetDef) => {
-      const key = `${def.type}:${def.id.toLowerCase()}:${def.file}:${def.line}`;
-      if (seen.has(key)) return;
-      seen.add(key);
-      if (!def.id.toLowerCase().startsWith(lower)) return;
+      const defKey = `${def.type}:${def.id.toLowerCase()}:${def.file}:${def.line}`;
+      if (seen.has(defKey)) return;
+      seen.add(defKey);
+      const idKey = def.id.toLowerCase();
+      if (!idKey.startsWith(lower)) return;
       let score = 3;
       if (refType && model.isAssignableTo(def.type, refType)) score = 1;
       if (selfType && model.isAssignableTo(def.type, selfType)) score = 0;
       if (def.origin === "project") score -= 0.2;
       if (def.stream === "local") score -= 0.4;
-      scored.push({ def, score });
+      const entry = byId.get(idKey);
+      if (!entry) {
+        byId.set(idKey, { best: { def, score }, extras: [] });
+        return;
+      }
+      if (score < entry.best.score) {
+        entry.extras.push(entry.best.def);
+        entry.best = { def, score };
+      } else {
+        entry.extras.push(def);
+      }
     };
 
     const targetType = selfType ?? refType;
@@ -492,17 +534,39 @@ export class Ra3CompletionProvider implements vscode.CompletionItemProvider {
       }
     }
 
-    const top = topScoredDefs(scored, MAX_VALUE_ITEMS);
+    const entries = [...byId.values()];
+    const top = topScoredDefs(
+      entries.map((e) => e.best),
+      MAX_VALUE_ITEMS,
+    );
     const items = top.map(({ def }) => {
-      const origin = def.origin === "manifest" ? `manifest (${def.manifestSource ?? ""})` : def.origin;
+      const originLabel = (d: AssetDef) =>
+        d.origin === "manifest"
+          ? d.manifestSource
+            ? t("manifest ({0})", d.manifestSource)
+            : t("manifest")
+          : originLabelText(d.origin);
+      const origin = originLabel(def);
       const doc = new vscode.MarkdownString();
       doc.appendCodeblock(def.id);
-      doc.appendMarkdown(`**Type**: ${def.type}  \n`);
-      if (def.manifestSource) doc.appendMarkdown(`**Source**: ${def.manifestSource}  \n`);
-      doc.appendMarkdown(`**Origin**: ${origin}`);
-      return make(def.id, vscode.CompletionItemKind.Value, `${def.type} · ${origin}`, doc.value);
+      doc.appendMarkdown(`${t("**Type**: {0}", def.type)}  \n`);
+      if (def.manifestSource) {
+        doc.appendMarkdown(`${t("**Source**: {0}", def.manifestSource)}  \n`);
+      }
+      doc.appendMarkdown(t("**Origin**: {0}", origin));
+      for (const extra of byId.get(def.id.toLowerCase())?.extras ?? []) {
+        doc.appendMarkdown(
+          `\n\n${t("Also defined as **{0}** · {1}", extra.type, originLabel(extra))}`,
+        );
+      }
+      return make(
+        def.id,
+        vscode.CompletionItemKind.Value,
+        t("{0} · {1}", def.type, origin),
+        doc.value,
+      );
     });
-    return this.limitItems(items, scored.length);
+    return this.limitItems(items, byId.size);
   }
 
   private defineItems(
@@ -512,17 +576,25 @@ export class Ra3CompletionProvider implements vscode.CompletionItemProvider {
   ): vscode.CompletionItem[] | vscode.CompletionList<vscode.CompletionItem> {
     const lower = prefix.replace(/^[=$]*/, "").toLowerCase();
     const items: vscode.CompletionItem[] = [];
+    // The same define can be visible through both the local overlay and the
+    // global index; show one entry per name (local definitions win because
+    // they are iterated first).
     const seen = new Set<string>();
     for (const defines of [idx.local?.defines, idx.defines]) {
       if (!defines) continue;
       for (const [key, defs] of defines) {
         if (!key.includes(lower)) continue;
         const def = defs[0];
-        const dedupe = `${def.name.toLowerCase()}:${def.file}:${def.line}`;
+        const dedupe = def.name.toLowerCase();
         if (seen.has(dedupe)) continue;
         seen.add(dedupe);
         const label = `$${def.name}`;
-        const item = make(label, vscode.CompletionItemKind.Constant, "Define", def.value);
+        const item = make(
+          label,
+          vscode.CompletionItemKind.Constant,
+          t("Define"),
+          def.value,
+        );
         item.insertText = label;
         items.push(item);
       }
@@ -545,8 +617,10 @@ export class Ra3CompletionProvider implements vscode.CompletionItemProvider {
         make(
           id,
           vscode.CompletionItemKind.Value,
-          "local module",
-          "Pipeline-local id in the enclosing GameObject (includes xi:include targets).",
+          t("local module"),
+          t(
+            "Pipeline-local id in the enclosing GameObject (includes xi:include targets).",
+          ),
         ),
       );
     }
@@ -639,7 +713,13 @@ export class Ra3CompletionProvider implements vscode.CompletionItemProvider {
       if (isList) return this.listEnumItems(info, rawPrefix, seg, valueRange, make);
       return info.enumValues
         .filter((v) => v.toLowerCase().startsWith(seg.token.toLowerCase()))
-        .map((v) => make(v, vscode.CompletionItemKind.EnumMember, elType ?? "enum"));
+        .map((v) =>
+          make(
+            v,
+            vscode.CompletionItemKind.EnumMember,
+            elType ?? t("enum"),
+          ),
+        );
     }
     if (idx && info.allowsDefine) {
       return this.defineItems(idx, seg.token, make);
@@ -673,13 +753,13 @@ export class Ra3CompletionProvider implements vscode.CompletionItemProvider {
       item.insertText = this.elementSnippet(child.name, child.type, !typedOpen);
       const type = child.type;
       const info = type ? model.typeInfo(type) : undefined;
-      item.detail = type ? `RA3 XML · ${type}` : "RA3 XML";
+      item.detail = type ? t("RA3 XML · {0}", type) : t("RA3 XML");
       const doc = child.doc || (info?.kind === "complex" ? info.doc : "");
       if (doc) item.documentation = new vscode.MarkdownString(doc);
       if (info?.kind === "simple" && this.simpleContentValueKind(info)) {
         item.command = {
           command: "editor.action.triggerSuggest",
-          title: "Suggest content value",
+          title: t("Suggest content value"),
         };
       }
       items.push(item);
@@ -701,6 +781,19 @@ interface ScoredDef {
   score: number;
 }
 
+function originLabelText(origin: AssetDef["origin"]): string {
+  switch (origin) {
+    case "project":
+      return t("project");
+    case "sdk":
+      return t("SDK");
+    case "manifest":
+      return t("manifest");
+    default:
+      return origin;
+  }
+}
+
 function compareScoredDefs(a: ScoredDef, b: ScoredDef): number {
   return a.score - b.score || a.def.id.localeCompare(b.def.id);
 }
@@ -816,9 +909,17 @@ function attributeInsertLayout(
   const wordStart = findAttributeWordStart(text, offset, el.start);
   const attrs = el.attrs;
   const complete = attrs.filter((a) => a.hasValue);
-  const last = complete.length ? complete[complete.length - 1] : null;
+  // Only attributes that end before the cursor decide whether the completed
+  // attribute is already on its own line. The tag's last complete attribute
+  // may still be AFTER the cursor when the user inserts a new attribute in
+  // the middle of a one-per-line tag; using it here would wrongly re-wrap.
+  const beforeCursor = complete.filter((a) => attributeEndOffset(a) <= offset);
+  const last = beforeCursor.length ? beforeCursor[beforeCursor.length - 1] : null;
   const lastEnd = last ? attributeEndOffset(last) : -1;
-  const alreadyOnNewLine = lastEnd >= 0 && text.slice(lastEnd, offset).includes("\n");
+  const alreadyOnNewLine =
+    lastEnd >= 0
+      ? text.slice(lastEnd, offset).includes("\n")
+      : text.slice(el.start + 1 + el.name.length, offset).includes("\n");
 
   // Canonical indent anchor: the first complete attribute that starts on its
   // own line. Fall back to the last complete attribute for inline elements.
@@ -838,31 +939,34 @@ function attributeInsertLayout(
     ? text.slice(0, anchor.nameStart).match(/[ \t]*$/)?.[0] ?? ""
     : "";
 
-  if (!onePerLine) {
-    if (alreadyOnNewLine) {
-      // Inline-style file, but the user started a new line: keep whatever
-      // indentation they already typed.
-      return { rangeStart: wordStart, prefix: "" };
-    }
-    const needsSpace = wordStart > el.start + 1 && !/\s/.test(text[wordStart - 1]);
-    return { rangeStart: wordStart, prefix: needsSpace ? " " : "" };
-  }
   if (alreadyOnNewLine) {
-    const lineStart = text.lastIndexOf("\n", offset - 1) + 1;
-    return { rangeStart: lineStart, prefix: indent };
+    // The attribute being completed is already on its own line: never insert
+    // another newline. In one-per-line files align with the canonical indent;
+    // in inline files keep whatever indentation the user already typed.
+    if (onePerLine) {
+      const lineStart = text.lastIndexOf("\n", offset - 1) + 1;
+      return { rangeStart: lineStart, prefix: indent };
+    }
+    return { rangeStart: wordStart, prefix: "" };
   }
-  // Insert on a new line. The editor adds the current line's indentation to
-  // the new line, so we must NOT embed our own indent here (it would
-  // compound). If whitespace was typed between the previous attribute and
-  // the cursor (e.g. a space used to trigger the suggestion popup), consume
-  // it so it does not linger as a trailing space.
-  const wsStart =
-    lastEnd >= 0 &&
-    wordStart > lastEnd &&
-    /^[ \t]*$/.test(text.slice(lastEnd, wordStart))
-      ? lastEnd
-      : wordStart;
-  return { rangeStart: wsStart, prefix: "\n" };
+  // The cursor sits on the same line as the element name or a complete
+  // attribute: the completed attribute would be the second one on that line.
+  if (onePerLine) {
+    // Insert on a new line. The editor adds the current line's indentation
+    // to the new line, so we must NOT embed our own indent here (it would
+    // compound). If whitespace was typed between the previous attribute and
+    // the cursor (e.g. a space used to trigger the suggestion popup), consume
+    // it so it does not linger as a trailing space.
+    const wsStart =
+      lastEnd >= 0 &&
+      wordStart > lastEnd &&
+      /^[ \t]*$/.test(text.slice(lastEnd, wordStart))
+        ? lastEnd
+        : wordStart;
+    return { rangeStart: wsStart, prefix: "\n" };
+  }
+  const needsSpace = wordStart > el.start + 1 && !/\s/.test(text[wordStart - 1]);
+  return { rangeStart: wordStart, prefix: needsSpace ? " " : "" };
 }
 
 function attributeEndOffset(attr: XmlAttribute): number {

src/features/diagnostics.ts

@@ -1,8 +1,13 @@
 import * as vscode from "vscode";
 import { dirname } from "node:path";
-import { LineMap, type XmlElement } from "../language/xmlParser";
+import {
+  LineMap,
+  type XmlElement,
+  type XmlParseError,
+} from "../language/xmlParser";
 import { resolveElementType } from "../language/typeContext";
 import { resolveSource, buildSearchPaths } from "../indexer/includeResolver";
+import { validateSdkPath } from "../sdk";
 import * as model from "../model/schemaModel";
 import type { ModWorkspace } from "../workspace";
 import type { ModIndex } from "../indexer/types";
@@ -15,14 +20,26 @@ import {
 } from "../indexer/refs";
 import type { LogicalElement } from "../indexer/logicalTree";
 import { scopePathKey } from "../indexer/localScope";
+import { t } from "../localize";
 
 export class Ra3Diagnostics {
   private collection: vscode.DiagnosticCollection;
+  private sdkCache: { path: string; unusable: boolean } | null = null;
 
   constructor(private ws: ModWorkspace) {
     this.collection = vscode.languages.createDiagnosticCollection("ra3modxml");
   }
 
+  /** True when the SDK is missing or not an SDK root (project-only mode). */
+  private sdkUnusable(): boolean {
+    const path = this.ws.settings.sdkPath;
+    if (this.sdkCache?.path === path) return this.sdkCache.unusable;
+    const status = validateSdkPath(path).status;
+    const unusable = status === "missing" || status === "not-sdk";
+    this.sdkCache = { path, unusable };
+    return unusable;
+  }
+
   async update(document: vscode.TextDocument): Promise<void> {
     if (!this.ws.isRa3Workspace()) {
       this.collection.set(document.uri, []);
@@ -45,7 +62,7 @@ export class Ra3Diagnostics {
             new vscode.Position(err.line, err.character),
             new vscode.Position(err.line, err.character + 1),
           ),
-          err.message,
+          this.parseErrorMessage(err),
           vscode.DiagnosticSeverity.Error,
           "xml-syntax",
         ),
@@ -67,6 +84,42 @@ export class Ra3Diagnostics {
     this.collection.set(document.uri, diags);
   }
 
+  private parseErrorMessage(err: XmlParseError): string {
+    switch (err.code) {
+      case "content-before-root":
+        return t("Content is not allowed before the root element");
+      case "unterminated-comment":
+        return t("Unterminated comment");
+      case "unterminated-cdata":
+        return t("Unterminated CDATA section");
+      case "unterminated-doctype":
+        return t("Unterminated DOCTYPE");
+      case "unterminated-processing-instruction":
+        return t("Unterminated processing instruction");
+      case "unterminated-closing-tag":
+        return t("Unterminated closing tag");
+      case "unterminated-start-tag":
+        return t("Unterminated start tag");
+      case "malformed-markup":
+        return t("Malformed markup");
+      case "unexpected-closing-tag":
+        return t(
+          "Unexpected closing tag </{0}>",
+          err.params?.name ?? "",
+        );
+      case "mismatched-closing-tag":
+        return t(
+          "Mismatched closing tag: expected </{0}>, found </{1}>",
+          err.params?.expected ?? "",
+          err.params?.found ?? "",
+        );
+      case "element-never-closed":
+        return t("Element <{0}> is never closed", err.params?.name ?? "");
+      default:
+        return err.message;
+    }
+  }
+
   clear(uri: vscode.Uri): void {
     this.collection.delete(uri);
   }
@@ -86,6 +139,17 @@ export class Ra3Diagnostics {
   ): void {
     const settings = this.ws.settings;
     const fileDuplicates = new Map<string, { line: number }>();
+    // A file whose root is not AssetDeclaration is an xi:include fragment
+    // (e.g. Data/Includes/GenericCelestialBuildingSuicide.xml). It is not a
+    // standalone RA3 document: top-level id / duplicate checks do not apply,
+    // and references/defines can only be resolved in the includer's context.
+    // When the fragment root itself is a known XSD element (e.g.
+    // CreateObjectDie), the root supplies the type context for its whole
+    // subtree, so element/attribute validation is still reliable.
+    const rootName = root ? localName(root.name) : "";
+    const isFragment = rootName !== "AssetDeclaration";
+    const validateTree =
+      !isFragment || (root !== null && model.elementTypeName(rootName) !== null);
 
     for (const el of doc.elements) {
       // Only report diagnostics for nodes that belong to the document being
@@ -102,13 +166,13 @@ export class Ra3Diagnostics {
       const range = tagRange(document, el);
 
       // Top-level assets must have an id.
-      if (isTopLevel) {
+      if (!isFragment && isTopLevel) {
         const idAttr = el.attrs.find((a) => a.name === "id");
         if (!idAttr || !idAttr.value) {
           diags.push(
             this.diag(
               range,
-              `Top-level asset <${local}> requires an id attribute`,
+              t("Top-level asset <{0}> requires an id attribute", local),
               vscode.DiagnosticSeverity.Error,
               "missing-id",
             ),
@@ -124,7 +188,12 @@ export class Ra3Diagnostics {
             diags.push(
               this.diag(
                 where,
-                `Duplicate id "${idAttr.value}" for <${local}> (also defined on line ${prev.line})`,
+                t(
+                  'Duplicate id "{0}" for <{1}> (also defined on line {2})',
+                  idAttr.value,
+                  local,
+                  prev.line,
+                ),
                 vscode.DiagnosticSeverity.Error,
                 "duplicate-id",
               ),
@@ -148,13 +217,13 @@ export class Ra3Diagnostics {
       const isXsdElement = model.isXsdElementName(el.name);
 
       // Unknown element.
-      if (settings.diagnoseUnknownElements && isXsdElement) {
+      if (settings.diagnoseUnknownElements && isXsdElement && validateTree) {
         const knownType = model.elementTypeName(local);
         if (!knownType) {
           diags.push(
             this.diag(
               range,
-              `Unknown element <${local}> (not in the RA3 XSD model)`,
+              t("Unknown element <{0}> (not in the RA3 XSD model)", local),
               vscode.DiagnosticSeverity.Warning,
               "unknown-element",
             ),
@@ -163,7 +232,7 @@ export class Ra3Diagnostics {
       }
 
       // Attributes.
-      if (isXsdElement) {
+      if (isXsdElement && validateTree) {
         const elType = resolveElementType(el);
         const knownAttrs = model.attributesOfType(elType);
         const knownNames = new Set(knownAttrs.map((a) => a.name));
@@ -175,41 +244,84 @@ export class Ra3Diagnostics {
             continue;
           }
           if (settings.diagnoseUnknownElements && !knownNames.has(aName)) {
-            diags.push(
-              this.diag(
-                new vscode.Range(
-                  document.positionAt(attr.nameStart),
-                  document.positionAt(attr.nameEnd),
+              diags.push(
+                this.diag(
+                  new vscode.Range(
+                    document.positionAt(attr.nameStart),
+                    document.positionAt(attr.nameEnd),
+                  ),
+                  t('Unknown attribute "{0}" for <{1}>', aName, local),
+                  vscode.DiagnosticSeverity.Warning,
+                  "unknown-attribute",
                 ),
-                `Unknown attribute "${aName}" for <${local}>`,
-                vscode.DiagnosticSeverity.Warning,
-                "unknown-attribute",
-              ),
             );
           }
 
           if (!attr.hasValue) continue;
-          this.checkValueReferences(
-            elType,
-            attr.name,
-            attr.value,
-            attr,
-            document,
-            idx,
-            diags,
-            provisional,
-          );
+          // References and $DEFINE constants inside fragments depend on the
+          // includer's context; don't report them until P1 resolves the real
+          // include sites.
+          if (!isFragment) {
+            this.checkValueReferences(
+              elType,
+              attr.name,
+              attr.value,
+              attr,
+              document,
+              idx,
+              diags,
+              provisional,
+            );
+          }
+        }
+        if (!isFragment) {
+          this.checkContentReferences(el, elType, document, idx, diags, provisional);
         }
-        this.checkContentReferences(el, elType, document, idx, diags, provisional);
       }
 
       // Include-specific checks.
       if (local === "Include") {
         this.checkInclude(el, document, idx, diags);
+      } else if (local === "include" && el.name.toLowerCase().startsWith("xi:")) {
+        this.checkXiInclude(el, document, idx, diags);
       }
     }
   }
 
+  private checkXiInclude(
+    el: XmlElement,
+    document: vscode.TextDocument,
+    idx: ModIndex | null,
+    diags: vscode.Diagnostic[],
+  ): void {
+    const hrefAttr = el.attrs.find((a) => a.name === "href");
+    if (!hrefAttr?.hasValue) return;
+    const searchPaths = idx
+      ? buildSearchPaths(idx.sdkDir, idx.projectDir)
+      : this.ws.searchPaths(document);
+    if (!searchPaths) return;
+    const resolved = resolveSource(
+      hrefAttr.value,
+      dirname(document.uri.fsPath),
+      searchPaths,
+    );
+    if (resolved.path) return;
+    if (/^(DATA|ART|AUDIO):/i.test(hrefAttr.value.trim())) {
+      if (this.sdkUnusable()) return;
+    }
+    diags.push(
+      this.diag(
+        new vscode.Range(
+          document.positionAt(hrefAttr.valueStart),
+          document.positionAt(hrefAttr.valueEnd),
+        ),
+        t("xi:include target not found: {0}", hrefAttr.value),
+        vscode.DiagnosticSeverity.Warning,
+        "include-not-found",
+      ),
+    );
+  }
+
   private checkCrossFileDuplicate(
     type: string,
     id: string,
@@ -246,8 +358,12 @@ export class Ra3Diagnostics {
       diags.push(
         this.diag(
           range,
-          `Duplicate id "${id}" for <${type}> (also defined in ${other.file})` +
-            (provisional ? " (based on a partial index)" : ""),
+          t(
+            'Duplicate id "{0}" for <{1}> (also defined in {2})',
+            id,
+            type,
+            other.file,
+          ) + (provisional ? t(" (based on a partial index)") : ""),
           vscode.DiagnosticSeverity.Error,
           "duplicate-id",
         ),
@@ -284,8 +400,8 @@ export class Ra3Diagnostics {
         diags.push(
           this.diag(
             range,
-            `Undefined define "$${m[1]}"` +
-              (provisional ? " (index incomplete — may be a false positive)" : ""),
+            t('Undefined define "${0}"', m[1]) +
+              (provisional ? t(" (index incomplete — may be a false positive)") : ""),
             vscode.DiagnosticSeverity.Warning,
             code,
           ),
@@ -306,20 +422,18 @@ export class Ra3Diagnostics {
     const attrRef = model
       .attributesOfType(elType)
       .find((a) => a.name === attrName);
-    const expected = attrRef?.refType
-      ? `of type \`${attrRef.refType}\``
-      : attrRef?.isRef
-        ? "of the expected declared type"
-        : "matching";
     const code = provisional ? "unresolved-reference-indexing" : "unresolved-reference";
-    const baseMessage = anyDef
-      ? `Reference "${value}" has no definition ${expected} (ids with the same name exist for other types)`
-      : `Unresolved reference "${value}" (not found in the current index)`;
+    const baseMessage = unresolvedReferenceMessage(
+      value,
+      anyDef,
+      attrRef?.refType ?? null,
+      attrRef?.isRef ?? false,
+    );
     diags.push(
       this.diag(
         range,
         provisional
-          ? `${baseMessage} (index incomplete — may be a false positive)`
+          ? baseMessage + t(" (index incomplete — may be a false positive)")
           : baseMessage,
         severity === "warning"
           ? vscode.DiagnosticSeverity.Warning
@@ -367,8 +481,8 @@ export class Ra3Diagnostics {
         diags.push(
           this.diag(
             range,
-            `Undefined define "$${m[1]}"` +
-              (provisional ? " (index incomplete — may be a false positive)" : ""),
+            t('Undefined define "${0}"', m[1]) +
+              (provisional ? t(" (index incomplete — may be a false positive)") : ""),
             vscode.DiagnosticSeverity.Warning,
             code,
           ),
@@ -386,16 +500,18 @@ export class Ra3Diagnostics {
       (idx.local?.assetsById.has(value.toLowerCase()) ?? false) ||
       idx.assetsById.has(value.toLowerCase());
     const refType = info.refType;
-    const expected = refType ? `of type \`${refType}\`` : "of the expected declared type";
     const code = provisional ? "unresolved-reference-indexing" : "unresolved-reference";
-    const baseMessage = anyDef
-      ? `Reference "${value}" has no definition ${expected} (ids with the same name exist for other types)`
-      : `Unresolved reference "${value}" (not found in the current index)`;
+    const baseMessage = unresolvedReferenceMessage(
+      value,
+      anyDef,
+      refType ?? null,
+      !refType,
+    );
     diags.push(
       this.diag(
         range,
         provisional
-          ? `${baseMessage} (index incomplete — may be a false positive)`
+          ? baseMessage + t(" (index incomplete — may be a false positive)")
           : baseMessage,
         severity === "warning"
           ? vscode.DiagnosticSeverity.Warning
@@ -420,7 +536,10 @@ export class Ra3Diagnostics {
             document.positionAt(typeAttr.valueStart),
             document.positionAt(typeAttr.valueEnd),
           ),
-          `Invalid Include type "${typeAttr.value}" (expected reference, instance or all)`,
+          t(
+            'Invalid Include type "{0}" (expected reference, instance or all)',
+            typeAttr.value,
+          ),
           vscode.DiagnosticSeverity.Error,
           "include-type",
         ),
@@ -429,7 +548,7 @@ export class Ra3Diagnostics {
     if (!sourceAttr?.hasValue) return;
     const searchPaths = idx
       ? buildSearchPaths(idx.sdkDir, idx.projectDir)
-      : this.ws.searchPaths();
+      : this.ws.searchPaths(document);
     if (!searchPaths) return;
     const resolved = resolveSource(
       sourceAttr.value,
@@ -439,13 +558,18 @@ export class Ra3Diagnostics {
     const candidateHit =
       idx?.sourceCandidates.some((c) => c.source === sourceAttr.value) ?? false;
     if (!resolved.path && !candidateHit) {
+      // Without a usable SDK, prefixed includes are expected to be missing;
+      // report one project-level hint instead of warning on every line.
+      if (this.sdkUnusable() && /^(DATA|ART|AUDIO):/i.test(sourceAttr.value.trim())) {
+        return;
+      }
       diags.push(
         this.diag(
           new vscode.Range(
             document.positionAt(sourceAttr.valueStart),
             document.positionAt(sourceAttr.valueEnd),
           ),
-          `Include target not found: ${sourceAttr.value}`,
+          t("Include target not found: {0}", sourceAttr.value),
           vscode.DiagnosticSeverity.Warning,
           "include-not-found",
         ),
@@ -471,6 +595,34 @@ function localName(tag: string): string {
   return idx >= 0 ? tag.slice(idx + 1) : tag;
 }
 
+function unresolvedReferenceMessage(
+  value: string,
+  anyDef: boolean,
+  refType: string | null,
+  isRef: boolean,
+): string {
+  if (anyDef) {
+    if (refType) {
+      return t(
+        'Reference "{0}" has no definition of type `{1}` (ids with the same name exist for other types)',
+        value,
+        refType,
+      );
+    }
+    if (isRef) {
+      return t(
+        'Reference "{0}" has no definition of the expected declared type (ids with the same name exist for other types)',
+        value,
+      );
+    }
+    return t(
+      'Reference "{0}" has no matching definition (ids with the same name exist for other types)',
+      value,
+    );
+  }
+  return t('Unresolved reference "{0}" (not found in the current index)', value);
+}
+
 function tagRange(document: vscode.TextDocument, el: XmlElement): vscode.Range {
   return new vscode.Range(
     document.positionAt(el.start),

src/features/hover.ts

@@ -19,6 +19,7 @@ import {
 import { scopePathKey, type DocumentScope } from "../indexer/localScope";
 import { dirname } from "node:path";
 import { buildSearchPaths, resolveSource } from "../indexer/includeResolver";
+import { t } from "../localize";
 
 export class Ra3HoverProvider implements vscode.HoverProvider {
   constructor(private ws: ModWorkspace) {}
@@ -68,7 +69,9 @@ export class Ra3HoverProvider implements vscode.HoverProvider {
       const md = new vscode.MarkdownString();
       md.appendCodeblock(`<${name}>`, "xml");
       md.appendMarkdown(
-        "XInclude element (W3C XInclude namespace) — not part of the RA3 XSD model.",
+        t(
+          "XInclude element (W3C XInclude namespace) — not part of the RA3 XSD model.",
+        ),
       );
       return new vscode.Hover(md);
     }
@@ -76,19 +79,25 @@ export class Ra3HoverProvider implements vscode.HoverProvider {
     const info = type ? model.typeInfo(type) : undefined;
     const md = new vscode.MarkdownString();
     md.appendCodeblock(`<${name}>`, "xml");
-    if (model.isTopLevelElement(name)) md.appendMarkdown(`**Top-level asset element**  \n`);
+    if (model.isTopLevelElement(name)) {
+      md.appendMarkdown(`${t("**Top-level asset element**")}  \n`);
+    }
     if (info?.kind === "complex") {
       if (info.doc) md.appendMarkdown(`${info.doc}  \n`);
       md.appendMarkdown(
-        `Attributes: ${info.attributes.length} · Children: ${info.children.length}  \n`,
+        `${t(
+          "Attributes: {0} · Children: {1}",
+          info.attributes.length,
+          info.children.length,
+        )}  \n`,
       );
-      if (info.base) md.appendMarkdown(`Extends: \`${info.base}\``);
+      if (info.base) md.appendMarkdown(t("Extends: `{0}`", info.base));
     } else if (info?.kind === "simple") {
-      md.appendMarkdown(`Simple type: \`${type}\``);
+      md.appendMarkdown(t("Simple type: `{0}`", type ?? ""));
     } else if (type) {
-      md.appendMarkdown(`Type: \`${type}\``);
+      md.appendMarkdown(t("Type: `{0}`", type));
     } else {
-      md.appendMarkdown("Not found in the bundled XSD model.");
+      md.appendMarkdown(t("Not found in the bundled XSD model."));
     }
     return new vscode.Hover(md);
   }
@@ -104,26 +113,38 @@ export class Ra3HoverProvider implements vscode.HoverProvider {
     md.appendCodeblock(`${attrName}=""`, "xml");
     if (!attr) {
       if (/^(xmlns|xai:)/.test(attrName)) {
-        md.appendMarkdown(`Namespace/instance attribute.`);
+        md.appendMarkdown(t("Namespace/instance attribute."));
         return new vscode.Hover(md);
       }
       if (!model.isXsdElementName(el.name)) {
         md.appendMarkdown(
-          `XInclude attribute (W3C XInclude namespace) — not part of the RA3 XSD model.`,
+          t(
+            "XInclude attribute (W3C XInclude namespace) — not part of the RA3 XSD model.",
+          ),
         );
         return new vscode.Hover(md);
       }
-      md.appendMarkdown("Unknown attribute for this element.");
+      md.appendMarkdown(t("Unknown attribute for this element."));
       return new vscode.Hover(md);
     }
     if (attr.doc) md.appendMarkdown(`${attr.doc}  \n`);
-    if (attr.required) md.appendMarkdown(`**Required**  \n`);
-    if (attr.refType) md.appendMarkdown(`References assets of type \`${attr.refType}\`  \n`);
+    if (attr.required) md.appendMarkdown(`${t("**Required**")}  \n`);
+    if (attr.refType) {
+      md.appendMarkdown(
+        `${t("References assets of type `{0}`", attr.refType)}  \n`,
+      );
+    }
     if (attr.enumValues.length)
-      md.appendMarkdown(`Values: \`${attr.enumValues.join("`, `")}\`  \n`);
-    if (attr.default != null) md.appendMarkdown(`Default: \`${attr.default}\`  \n`);
-    if (attr.allowsDefine) md.appendMarkdown(`May use \`$DEFINE\` constants  \n`);
-    md.appendMarkdown(`Type: \`${attr.type ?? "string"}\``);
+      md.appendMarkdown(
+        `${t("Values: `{0}`", attr.enumValues.join("`, `"))}  \n`,
+      );
+    if (attr.default != null) {
+      md.appendMarkdown(`${t("Default: `{0}`", attr.default)}  \n`);
+    }
+    if (attr.allowsDefine) {
+      md.appendMarkdown(`${t("May use `$DEFINE` constants")}  \n`);
+    }
+    md.appendMarkdown(t("Type: `{0}`", attr.type ?? "string"));
     return new vscode.Hover(md);
   }
 
@@ -155,7 +176,7 @@ export class Ra3HoverProvider implements vscode.HoverProvider {
     ) {
       const searchPaths = idx
         ? buildSearchPaths(idx.sdkDir, idx.projectDir)
-        : this.ws.searchPaths();
+        : this.ws.searchPaths(document);
       const resolved = searchPaths
         ? resolveSource(
             value,
@@ -164,17 +185,19 @@ export class Ra3HoverProvider implements vscode.HoverProvider {
           ).path
         : null;
       if (resolved) {
-        md.appendMarkdown(`**Include source**  \n`);
+        md.appendMarkdown(`${t("**Include source**")}  \n`);
         md.appendCodeblock(resolved);
         return new vscode.Hover(md);
       }
       const cand = idx?.sourceCandidates.find((c) => c.source === value);
       if (cand) {
-        md.appendMarkdown(`**Include source**  \n`);
+        md.appendMarkdown(`${t("**Include source**")}  \n`);
         md.appendCodeblock(cand.path);
         return new vscode.Hover(md);
       }
-      md.appendMarkdown(`Include source: \`${value}\` (not in candidate index)`);
+      md.appendMarkdown(
+        t("Include source: `{0}` (not in candidate index)", value),
+      );
       return new vscode.Hover(md);
     }
 
@@ -191,7 +214,7 @@ export class Ra3HoverProvider implements vscode.HoverProvider {
     if (!idx) {
       if (isReferenceAttributeOfType(elType, attrName)) {
         md.appendMarkdown(
-          "Index is still building — references cannot be resolved yet.",
+          t("Index is still building — references cannot be resolved yet."),
         );
         return new vscode.Hover(md);
       }
@@ -204,12 +227,14 @@ export class Ra3HoverProvider implements vscode.HoverProvider {
       const attrRef = model
         .attributesOfType(elType)
         .find((a) => a.name === attrName);
-      const expected = attrRef?.refType
-        ? ` of type \`${attrRef.refType}\``
-        : attrRef?.isRef
-          ? " of the expected declared type"
-          : "";
-      return this.noDefinitionHover(expected);
+      return this.noDefinitionHover(
+        attrRef?.refType
+          ? "typed"
+          : attrRef?.isRef
+            ? "untyped"
+            : "generic",
+        attrRef?.refType ?? undefined,
+      );
     }
   }
 
@@ -235,16 +260,16 @@ export class Ra3HoverProvider implements vscode.HoverProvider {
     if (!isReferenceContentType(elType)) return null;
     if (!idx) {
       const md = new vscode.MarkdownString();
-      md.appendMarkdown("Index is still building — references cannot be resolved yet.");
+      md.appendMarkdown(
+        t("Index is still building — references cannot be resolved yet."),
+      );
       return new vscode.Hover(md);
     }
     const targets = resolveContentReferenceTargets(idx, elType, value);
     if (targets.length) return this.definitionsHover(targets, document);
     const info = elType ? model.typeInfo(elType) : undefined;
     const refType = info?.kind === "simple" ? info.refType : null;
-    return this.noDefinitionHover(
-      refType ? ` of type \`${refType}\`` : " of the expected declared type",
-    );
+    return this.noDefinitionHover(refType ? "typed" : "untyped", refType ?? undefined);
   }
 
   private defineHover(
@@ -254,10 +279,10 @@ export class Ra3HoverProvider implements vscode.HoverProvider {
     if (!defs?.length) return null;
     const d = defs[0];
     const md = new vscode.MarkdownString();
-    md.appendMarkdown(`**Define** \`$${d.name}\`  \n`);
+    md.appendMarkdown(`${t("**Define** `{0}`", `$${d.name}`)}  \n`);
     md.appendCodeblock(d.value);
     const rel = relativePath(document, d.file);
-    md.appendMarkdown(`Defined in \`${rel}:${d.line}\``);
+    md.appendMarkdown(t("Defined in `{0}:{1}`", rel, d.line));
     return new vscode.Hover(md);
   }
 
@@ -266,23 +291,44 @@ export class Ra3HoverProvider implements vscode.HoverProvider {
     document: vscode.TextDocument,
   ): vscode.Hover {
     const md2 = new vscode.MarkdownString();
-    md2.appendMarkdown(`**${targets.length} definition${targets.length > 1 ? "s" : ""}**  \n`);
+    md2.appendMarkdown(
+      `${targets.length === 1 ? t("**1 definition**") : t("**{0} definitions**", targets.length)}  \n`,
+    );
     for (const { def: d } of targets.slice(0, 8)) {
       const loc =
         d.origin === "manifest"
-          ? `manifest \`${d.manifestSource ?? d.file}\``
-          : `\`${relativePath(document, d.file)}:${d.line}\``;
-      md2.appendMarkdown(`- \`${d.type}\` · ${loc}  \n`);
+          ? t("manifest `{0}`", d.manifestSource ?? d.file)
+          : t("`{0}:{1}`", relativePath(document, d.file), d.line);
+      md2.appendMarkdown(`${t("- `{0}` · {1}", d.type, loc)}  \n`);
     }
     return new vscode.Hover(md2);
   }
 
-  private noDefinitionHover(expected: string): vscode.Hover {
+  private noDefinitionHover(
+    kind: "typed" | "untyped" | "generic",
+    refType?: string,
+  ): vscode.Hover {
     const md = new vscode.MarkdownString();
-    md.appendMarkdown(
-      `No matching definition${expected} in the current index` +
-        " (may exist in a compiled manifest or vanilla data).",
-    );
+    if (kind === "typed" && refType) {
+      md.appendMarkdown(
+        t(
+          "No matching definition of type `{0}` in the current index (may exist in a compiled manifest or vanilla data).",
+          refType,
+        ),
+      );
+    } else if (kind === "untyped") {
+      md.appendMarkdown(
+        t(
+          "No matching definition of the expected declared type in the current index (may exist in a compiled manifest or vanilla data).",
+        ),
+      );
+    } else {
+      md.appendMarkdown(
+        t(
+          "No matching definition in the current index (may exist in a compiled manifest or vanilla data).",
+        ),
+      );
+    }
     return new vscode.Hover(md);
   }
 
@@ -301,10 +347,10 @@ export class Ra3HoverProvider implements vscode.HoverProvider {
     const lineMap = scope.lineMaps.get(scopePathKey(target.sourceFile));
     const line = lineMap ? lineMap.positionAt(idAttr.valueStart).line + 1 : 0;
     const md = new vscode.MarkdownString();
-    md.appendMarkdown(`**Local pipeline id** \`${value}\`  \n`);
+    md.appendMarkdown(`${t("**Local pipeline id** `{0}`", value)}  \n`);
     md.appendCodeblock(`<${target.name}>`);
     const rel = relativePath(document, target.sourceFile);
-    md.appendMarkdown(`Defined in \`${rel}:${line}\``);
+    md.appendMarkdown(t("Defined in `{0}:{1}`", rel, line));
     return new vscode.Hover(md);
   }
 }

src/features/navigation.ts

@@ -4,6 +4,7 @@ import { findElementAt, parseXml, textContentTokenAt } from "../language/xmlPars
 import { resolveElementType } from "../language/typeContext";
 import {
   buildSearchPaths,
+  buildVanillaSearchPaths,
   resolveSource,
   type SearchPaths,
 } from "../indexer/includeResolver";
@@ -14,6 +15,7 @@ import {
   resolveReferenceTargetsForType,
   type ReferenceTarget,
 } from "../indexer/refs";
+import { findReferenceLocations } from "./references";
 import {
   findContainingGameObject,
   findLocalId,
@@ -22,6 +24,7 @@ import {
 import { scopePathKey, type DocumentScope } from "../indexer/localScope";
 import type { ModWorkspace } from "../workspace";
 import type { AssetDef, ModIndex } from "../indexer/types";
+import { t } from "../localize";
 
 function searchPathsFor(idx: ModIndex): SearchPaths {
   return buildSearchPaths(idx.sdkDir, idx.projectDir);
@@ -70,7 +73,9 @@ export class Ra3DefinitionProvider implements vscode.DefinitionProvider {
       (el.name === "Include" && nameLower === "source") ||
       (el.name === "include" && nameLower === "href")
     ) {
-      const searchPaths = idx ? searchPathsFor(idx) : this.ws.searchPaths();
+      const searchPaths = idx
+        ? searchPathsFor(idx)
+        : this.ws.searchPaths(document);
       const resolved = searchPaths
         ? resolveSource(value, dirname(document.uri.fsPath), searchPaths).path
         : null;
@@ -163,13 +168,37 @@ async function assetDefLocation(
   scope: DocumentScope,
   currentDocument: vscode.TextDocument,
 ): Promise<vscode.Location | null> {
+  // While a rebuild is running, avoid readDom() mutating the live indexer's
+  // caches mid-build; a line-based location is a fine temporary fallback.
+  if (ws.isBuilding) {
+    const line = Math.max(0, def.line - 1);
+    return new vscode.Location(
+      vscode.Uri.file(def.file),
+      new vscode.Range(
+        new vscode.Position(line, 0),
+        new vscode.Position(line, 1),
+      ),
+    );
+  }
   if (def.origin === "manifest") {
     const src = def.manifestSource;
-    if (src?.toUpperCase().startsWith("DATA:")) {
-      const resolved = resolveSource(src, null, searchPathsFor(idx)).path;
+    if (src) {
+      // manifestSource is a path recorded by the vanilla build, not an
+      // Include path in the current mod. Resolve it with SDK-only search
+      // paths so a mod file shadowing the same DATA: path cannot hijack the
+      // jump (e.g. mod Data/globaldata/weapon.xml vs SageXml/...). If the SDK
+      // source is missing (user removed/renamed a SageXml file), keep the
+      // definition manifest-only instead of opening the wrong file.
+      const resolved = resolveSource(
+        src,
+        null,
+        buildVanillaSearchPaths(idx.sdkDir),
+      ).path;
       if (resolved) {
         // The recorded source file is XML (e.g. SageXml) when available:
-        // jump to the precise definition inside it, not just the file.
+        // jump to the precise definition inside it. If the file was modified
+        // and no longer contains the id, fall back to opening the file at the
+        // top rather than inventing a precise location.
         const precise = await locationInDocument(ws, resolved, def.id);
         return precise ?? new vscode.Location(vscode.Uri.file(resolved), new vscode.Position(0, 0));
       }
@@ -278,56 +307,7 @@ export class Ra3ReferenceProvider implements vscode.ReferenceProvider {
     _context: vscode.ReferenceContext,
     _token: vscode.CancellationToken,
   ): Promise<vscode.Location[] | null> {
-    if (!this.ws.isRa3Workspace()) return null;
-    const text = document.getText();
-    const offset = document.offsetAt(position);
-    const doc = parseXml(text);
-    const el = findElementAt(doc, offset);
-    if (!el) return null;
-    const attr = el.attrs.find(
-      (a) =>
-        (a.hasValue && offset >= a.valueStart && offset <= a.valueEnd) ||
-        (offset >= a.nameStart && offset <= a.nameEnd),
-    );
-    let id: string | null = null;
-    if (attr?.hasValue) {
-      id = attr.value;
-    } else {
-      // Element text content (e.g. <CreateObject>CrateDebris_01</CreateObject>).
-      const elType = resolveElementType(el);
-      const token = textContentTokenAt(text, el, offset);
-      if (token && isReferenceContentType(elType) && !token.value.startsWith("$")) {
-        id = token.value;
-      }
-    }
-    if (!id || id.startsWith("$")) return null;
-
-    const locations: vscode.Location[] = [];
-    // Matches both attribute values ("id" / 'id') and simple-content
-    // references (>id<); the outer delimiters are stripped from the result
-    // range below so the returned locations cover just the id.
-    const pattern = `(?:["']|>)[ \\t]*${escapeRegExp(id)}[ \\t]*(?:["']|<)`;
-    await findTextInWorkspace(
-      { pattern, isRegExp: true },
-      { include: "**/*.xml", maxResults: 2000 },
-      (result: { uri: vscode.Uri; matches: { range: vscode.Range }[] }) => {
-        if (!result.uri) return;
-        for (const m of result.matches) {
-          const start = m.range.start;
-          const end = m.range.end;
-          locations.push(
-            new vscode.Location(
-              result.uri,
-              new vscode.Range(
-                new vscode.Position(start.line, start.character + 1),
-                new vscode.Position(end.line, end.character - 1),
-              ),
-            ),
-          );
-        }
-      },
-    );
-    return locations.length ? locations : null;
+    return findReferenceLocations(this.ws, document, position);
   }
 }
 
@@ -341,8 +321,10 @@ export class Ra3DocumentLinkProvider implements vscode.DocumentLinkProvider {
     _token: vscode.CancellationToken,
   ): Promise<vscode.DocumentLink[]> {
     if (!this.ws.isRa3Workspace()) return [];
-    const idx = this.ws.index;
-    const searchPaths = idx ? searchPathsFor(idx) : this.ws.searchPaths();
+    const idx = this.ws.indexForDocument(document) ?? this.ws.activeIndex();
+      const searchPaths = idx
+        ? searchPathsFor(idx)
+        : this.ws.searchPaths(document);
     if (!searchPaths) return [];
     const text = document.getText();
     const doc = parseXml(text);
@@ -423,7 +405,13 @@ export class Ra3DocumentSymbolProvider implements vscode.DocumentSymbolProvider
           document.positionAt(define.end),
         );
         symbols.push(
-          new vscode.DocumentSymbol(`$${name}`, "Define", vscode.SymbolKind.Constant, range, range),
+          new vscode.DocumentSymbol(
+            `$${name}`,
+            t("Define"),
+            vscode.SymbolKind.Constant,
+            range,
+            range,
+          ),
         );
       }
     }
@@ -435,40 +423,3 @@ function localName(tag: string): string {
   const idx = tag.lastIndexOf(":");
   return idx >= 0 ? tag.slice(idx + 1) : tag;
 }
-
-function escapeRegExp(s: string): string {
-  return s.replace(/[.*+?^${}()|[\]\\]/g, "\\$&");
-}
-
-/**
- * `workspace.findTextInFiles` is a stable VS Code API (since 1.66) but is
- * missing from the published typings, so we declare the subset we need and
- * call it via a safe cast.
- */
-interface TextSearchQuery {
-  pattern: string;
-  isRegExp?: boolean;
-  isCaseSensitive?: boolean;
-  isWordMatch?: boolean;
-}
-
-interface TextSearchOptions {
-  include?: string;
-  exclude?: string;
-  maxResults?: number;
-}
-
-function findTextInWorkspace(
-  query: TextSearchQuery,
-  options: TextSearchOptions,
-  callback: (result: { uri: vscode.Uri; matches: { range: vscode.Range }[] }) => void,
-): Promise<void> {
-  const api = vscode.workspace as unknown as {
-    findTextInFiles(
-      query: TextSearchQuery,
-      options: TextSearchOptions,
-      callback: (result: { uri: vscode.Uri; matches: { range: vscode.Range }[] }) => void,
-    ): Promise<unknown>;
-  };
-  return api.findTextInFiles(query, options, callback).then(() => undefined);
-}

src/features/references.ts

@@ -0,0 +1,237 @@
+/**
+ * Shared semantic reference logic used by Find All References, the CodeLens
+ * "N references" command and (indirectly) the unreferenced-assets report.
+ *
+ * Unlike the old text-search implementation, every result here comes from
+ * the reverse reference index built during indexing, so the count shown on a
+ * top-level asset always matches the references peek opened by clicking it.
+ */
+
+import * as vscode from "vscode";
+import {
+  findElementAt,
+  parseXml,
+  textContentTokenAt,
+} from "../language/xmlParser";
+import { resolveElementType } from "../language/typeContext";
+import { attributesOfType, typeInfo } from "../model/schemaModel";
+import {
+  filterAndScoreDefs,
+  isReferenceAttributeOfType,
+  isReferenceContentType,
+  mergeLocalAndGlobalDefs,
+} from "../indexer/refs";
+import {
+  referenceSitesForDef,
+  scheduleRebuildIfRecordsDesync,
+} from "../indexer/referenceIndex";
+import type { AssetDef, ModIndex, ReferenceSite } from "../indexer/types";
+import type { ModWorkspace } from "../workspace";
+
+export interface ReferenceContext {
+  id: string;
+  /** XSD refType when the cursor is on a typed reference; null otherwise. */
+  refType: string | null;
+  /** Element type for inheritFrom filtering; null otherwise. */
+  selfType: string | null;
+}
+
+/**
+ * Extracts the referenced id and its XSD context from the cursor position.
+ * Works on reference attribute values/names, simple-content text and on an
+ * asset's own `id` definition (where every same-id definition is a target).
+ */
+export function referenceContextAt(
+  document: vscode.TextDocument,
+  offset: number,
+): ReferenceContext | null {
+  const text = document.getText();
+  const doc = parseXml(text);
+  const el = findElementAt(doc, offset);
+  if (!el) return null;
+  const elType = resolveElementType(el);
+  const attr = el.attrs.find(
+    (a) =>
+      (a.hasValue && offset >= a.valueStart && offset <= a.valueEnd) ||
+      (offset >= a.nameStart && offset <= a.nameEnd),
+  );
+
+  if (attr?.hasValue) {
+    const value = attr.value;
+    if (!value || value.startsWith("$") || value.startsWith("=")) return null;
+    const nameLower = attr.name.toLowerCase();
+    if (nameLower === "id") {
+      return { id: value, refType: null, selfType: null };
+    }
+    if (!isReferenceAttributeOfType(elType, attr.name)) return null;
+    if (nameLower === "inheritfrom") {
+      return { id: value, refType: null, selfType: elType };
+    }
+    const attrInfo = elType
+      ? attributesOfType(elType).find((a) => a.name === attr.name)
+      : undefined;
+    return { id: value, refType: attrInfo?.refType ?? null, selfType: null };
+  }
+
+  if (elType && isReferenceContentType(elType)) {
+    const token = textContentTokenAt(text, el, offset);
+    if (token && !token.value.startsWith("$") && !token.value.startsWith("=")) {
+      const info = typeInfo(elType);
+      return {
+        id: token.value,
+        refType: info?.kind === "simple" ? info.refType : null,
+        selfType: null,
+      };
+    }
+  }
+  return null;
+}
+
+/** Definitions matching a reference context (strict type filtering). */
+export function definitionsForReference(
+  idx: ModIndex,
+  ctx: ReferenceContext,
+): AssetDef[] {
+  const defs = mergeLocalAndGlobalDefs(
+    idx.local?.assetsById.get(ctx.id.toLowerCase()),
+    idx.assetsById.get(ctx.id.toLowerCase()),
+  );
+  return filterAndScoreDefs(defs, ctx.refType, ctx.selfType).map((t) => t.def);
+}
+
+/** Union of reference sites for a set of definitions, de-duplicated. */
+export function collectReferenceSites(
+  idx: ModIndex,
+  defs: readonly AssetDef[],
+): ReferenceSite[] {
+  const sites: ReferenceSite[] = [];
+  const seen = new Set<string>();
+  for (const def of defs) {
+    for (const site of referenceSitesForDef(idx, def)) {
+      const key = `${site.file}\u0000${site.start}\u0000${site.end}\u0000${site.kind}`;
+      if (seen.has(key)) continue;
+      seen.add(key);
+      sites.push(site);
+    }
+  }
+  return sites;
+}
+
+/** Converts stored offsets to precise editor locations (fallback: line). */
+export async function sitesToLocations(
+  ws: ModWorkspace,
+  sites: readonly ReferenceSite[],
+): Promise<vscode.Location[]> {
+  const byFile = new Map<string, ReferenceSite[]>();
+  for (const site of sites) {
+    let list = byFile.get(site.file);
+    if (!list) {
+      list = [];
+      byFile.set(site.file, list);
+    }
+    list.push(site);
+  }
+
+  const locations: vscode.Location[] = [];
+  for (const [file, fileSites] of byFile) {
+    const parsed = await (ws.indexerForFile(file) ?? ws.activeIndexer())?.readDom(
+      file,
+    );
+    const lineMap = parsed?.lineMap ?? null;
+    for (const site of fileSites) {
+      if (lineMap) {
+        const start = lineMap.positionAt(site.start);
+        const end = lineMap.positionAt(site.end);
+        locations.push(
+          new vscode.Location(
+            vscode.Uri.file(file),
+            new vscode.Range(
+              new vscode.Position(start.line, start.character),
+              new vscode.Position(end.line, end.character),
+            ),
+          ),
+        );
+      } else {
+        const line = Math.max(0, site.line - 1);
+        locations.push(
+          new vscode.Location(
+            vscode.Uri.file(file),
+            new vscode.Range(
+              new vscode.Position(line, 0),
+              new vscode.Position(line, 1),
+            ),
+          ),
+        );
+      }
+    }
+  }
+  return locations;
+}
+
+/**
+ * Semantic Find All References (used by the reference provider).
+ *
+ * Only real reference sites are returned — the asset's own `id` definition is
+ * never included, regardless of VS Code's `includeDeclaration` flag, so the
+ * result set matches the CodeLens reference count exactly.
+ */
+export async function findReferenceLocations(
+  ws: ModWorkspace,
+  document: vscode.TextDocument,
+  position: vscode.Position,
+): Promise<vscode.Location[] | null> {
+  if (!ws.isRa3Workspace()) return null;
+  scheduleRebuildIfRecordsDesync(ws.recordsSyncSurfaceFor(document), document);
+  const scope = await ws.getScope(document);
+  const idx = scope.merged;
+  if (!idx) return null;
+  const ctx = referenceContextAt(document, document.offsetAt(position));
+  if (!ctx) return null;
+  const defs = definitionsForReference(idx, ctx);
+  if (!defs.length) return null;
+
+  const locations = await sitesToLocations(ws, collectReferenceSites(idx, defs));
+  return locations.length ? locations : null;
+}
+
+/** Arguments passed from the CodeLens to the showReferences command. */
+export interface ShowReferencesArgs {
+  uri: vscode.Uri;
+  position: vscode.Position;
+  id: string;
+  type: string;
+  file: string;
+  line: number;
+}
+
+/** Opens the references peek for one specific asset definition. */
+export async function showReferencesForDef(
+  ws: ModWorkspace,
+  args: ShowReferencesArgs,
+): Promise<void> {
+  const doc = vscode.workspace.textDocuments.find(
+    (d) => d.uri.toString() === args.uri.toString(),
+  );
+  if (!doc) return;
+  let idx: ModIndex | null = null;
+  try {
+    idx = (await ws.getCodeLensScope(doc)).merged;
+  } catch {
+    return;
+  }
+  if (!idx) return;
+  // Same definition union as the lens count / Find All References.
+  const defs = definitionsForReference(idx, {
+    id: args.id,
+    refType: null,
+    selfType: null,
+  });
+  const sites = collectReferenceSites(idx, defs);
+  const locations = await sitesToLocations(ws, sites);
+  await vscode.commands.executeCommand(
+    "editor.action.showReferences",
+    args.uri,
+    args.position,
+    locations,
+  );
+}

src/features/unreferenced.ts

@@ -0,0 +1,125 @@
+import * as vscode from "vscode";
+import { relative } from "node:path";
+import { findElementAt, parseXml } from "../language/xmlParser";
+import { unreferencedByType } from "../indexer/referenceIndex";
+import type { ModWorkspace } from "../workspace";
+import { t } from "../localize";
+
+interface TypePickItem extends vscode.QuickPickItem {
+  type: string;
+}
+
+interface AssetPickItem extends vscode.QuickPickItem {
+  file: string;
+  line: number;
+}
+
+/**
+ * Palette command: pick an asset type, then jump to any project asset of
+ * that type that has zero incoming references. Only types that are reference
+ * targets by design are offered, so auto-registered data (settings, map
+ * metadata, w3x sub-assets...) is not reported as "unused".
+ */
+export async function findUnreferencedAssets(
+  ws: ModWorkspace,
+  args?: { type?: string },
+): Promise<void> {
+  const idx = ws.activeIndex();
+  if (!ws.isRa3Workspace() || !idx) {
+    void vscode.window.showInformationMessage(
+      t("RA3 Mod XML: no index available yet."),
+    );
+    return;
+  }
+  const byType = unreferencedByType(idx);
+
+  let type = args?.type;
+  if (!type) {
+    if (!byType.size) {
+      void vscode.window.showInformationMessage(
+        t("RA3 Mod XML: no unreferenced assets found."),
+      );
+      return;
+    }
+    const pickedType = await vscode.window.showQuickPick<TypePickItem>(
+      [...byType.entries()].map(([typeName, defs]) => ({
+        label: typeName,
+        description: t("{0} unreferenced", defs.length),
+        type: typeName,
+      })),
+      {
+        placeHolder: t("Select an asset type"),
+        matchOnDescription: true,
+      },
+    );
+    if (!pickedType) return;
+    type = pickedType.type;
+  }
+
+  const defs = byType.get(type) ?? [];
+  if (!defs.length) {
+    void vscode.window.showInformationMessage(
+      t("RA3 Mod XML: no unreferenced {0} assets found.", type),
+    );
+    return;
+  }
+  const pickedAsset = await vscode.window.showQuickPick<AssetPickItem>(
+    defs.map((d) => ({
+      label: d.id,
+      description: `${displayPath(idx.projectDir, d.file)}:${d.line}`,
+      file: d.file,
+      line: d.line,
+    })),
+    {
+      placeHolder: t("{0}: {1} unreferenced", type, defs.length),
+      matchOnDescription: true,
+    },
+  );
+  if (!pickedAsset) return;
+
+  const uri = vscode.Uri.file(pickedAsset.file);
+  const document = await vscode.workspace.openTextDocument(uri);
+  const line = Math.max(0, pickedAsset.line - 1);
+  await vscode.window.showTextDocument(document, {
+    selection: new vscode.Range(
+      new vscode.Position(line, 0),
+      new vscode.Position(line, 1),
+    ),
+    preview: true,
+  });
+}
+
+/**
+ * Editor context-menu entry: pre-selects the asset type under the cursor.
+ * Falls back to the type picker when the cursor is not on a top-level asset.
+ */
+export async function findUnreferencedAssetsOfType(
+  ws: ModWorkspace,
+): Promise<void> {
+  const editor = vscode.window.activeTextEditor;
+  if (editor && ws.isRa3Workspace()) {
+    const document = editor.document;
+    const offset = document.offsetAt(editor.selection.active);
+    const doc = parseXml(document.getText());
+    const el = findElementAt(doc, offset);
+    if (el && el.parent === doc.root) {
+      const local = localName(el.name);
+      const isStructural = local === "Tags" || local === "Includes" || local === "Defines";
+      const hasId = el.attrs.some((a) => a.name === "id" && a.hasValue);
+      if (!isStructural && hasId) {
+        return findUnreferencedAssets(ws, { type: local });
+      }
+    }
+  }
+  return findUnreferencedAssets(ws);
+}
+
+function localName(tag: string): string {
+  const idx = tag.lastIndexOf(":");
+  return idx >= 0 ? tag.slice(idx + 1) : tag;
+}
+
+function displayPath(projectDir: string, file: string): string {
+  const rel = relative(projectDir, file);
+  return rel && !rel.startsWith("..") ? rel : file;
+}

src/indexer/caches.ts

@@ -10,6 +10,7 @@
  */
 
 import { resolve } from "node:path";
+import { createHash } from "node:crypto";
 import type { IndexedFile, ParsedFile } from "./types";
 import type { IndexRecords } from "./records";
 import type { ResolveResult } from "./includeResolver";
@@ -19,6 +20,28 @@ export function normKey(path: string): string {
   return resolve(path).toLowerCase();
 }
 
+/**
+ * SHA-1 of the BOM-stripped text a file's records were extracted from.
+ * Lets force rebuilds verify that a stat-matching cache entry is not stale
+ * (FAT32/exFAT timestamps can match after a rewrite), and lets features
+ * detect "open document != indexed snapshot" without reading the whole index.
+ */
+export function contentHash(text: string): string {
+  return createHash("sha1").update(text, "utf8").digest("hex");
+}
+
+/**
+ * Hash of a file's compact index records. Semantic records (assets, defines,
+ * includes, references) are what the index actually consumes, so comparing
+ * records hashes ignores cosmetic text changes (line endings, whitespace)
+ * and only fires the self-heal when the index would really be out of date.
+ */
+export function recordsHash(records: IndexRecords): string {
+  return createHash("sha1")
+    .update(JSON.stringify(records), "utf8")
+    .digest("hex");
+}
+
 /**
  * LRU cache for fully parsed XML documents.
  *
@@ -119,6 +142,20 @@ export interface IndexRecordsCacheEntry {
   records: IndexRecords;
   /** "shallow" for art-asset scans (.w3x), "full" for parsed XML. */
   kind: "shallow" | "full";
+  /**
+   * Hash of the BOM-stripped file text (full parses only). Absent for
+   * shallow scans (avoid hashing multi-MB model files) and for cache entries
+   * produced before this field existed.
+   */
+  contentHash?: string;
+  /**
+   * False when the entry was seeded from disk but its stat has not been
+   * checked against the current disk yet. Such entries may only be used
+   * for deferred art registration during phase A; the indexer must not
+   * consume their records until `validated` is true (set by the stat pass
+   * or by a build that re-read the file).
+   */
+  validated?: boolean;
 }
 
 /**

src/indexer/diskCache.ts

@@ -11,8 +11,10 @@
  * Correctness model (layered):
  * - every cached record stores a multi-signal stamp
  *   `{ size, mtimeMs, birthtimeMs, ctimeMs }`;
- * - on load, each file is stat-validated (no content reads); mismatches and
- *   missing files are dropped and re-read during the build;
+ * - a cold start seeds the in-memory cache immediately (`load`) and runs the
+ *   stat pass in the background (`validate`, no content reads); mismatches
+ *   and missing files are invalidated and re-read by a follow-up rebuild
+ *   (the workspace's stale/dirty mechanism converges);
  * - during a session the file watcher invalidates entries precisely;
  * - `ra3modxml.reindex` / `ra3modxml.clearCache` remain the final authority.
  *
@@ -34,7 +36,14 @@ import type { IndexedFile } from "./types";
 const gzipAsync = promisify(gzip);
 const gunzipAsync = promisify(gunzip);
 
-export const DISK_CACHE_VERSION = 1;
+/**
+ * v2: per-file records now carry typed reference records (`references`),
+ * so caches produced by v1 (assets/defines/includes only) are stale.
+ * v3: full XML records carry `contentHash`, and snapshots publish per-file
+ * `recordsHashes` for the desync self-heal; caches without hashes cannot be
+ * verified, so v2 files are regenerated once.
+ */
+export const DISK_CACHE_VERSION = 3;
 /** How many stat validations run concurrently on load. */
 const VALIDATE_CONCURRENCY = 32;
 
@@ -53,6 +62,8 @@ export interface DiskCacheRecord {
   stat: NonNullable<IndexedFile["stat"]>;
   records: IndexRecords;
   kind: "full" | "shallow";
+  /** Content hash for full XML parses (see `IndexRecordsCacheEntry`). */
+  contentHash?: string;
 }
 
 interface DiskCacheFile {
@@ -71,6 +82,22 @@ export interface DiskCacheLoadStats {
   validated: number;
   /** Records dropped because the file changed, moved or was deleted. */
   dropped: number;
+  /** Milliseconds spent reading / decompressing / parsing the cache file. */
+  loadMs: number;
+  /** Milliseconds spent stat-validating cached entries. */
+  validateMs: number;
+}
+
+function emptyLoadStats(): DiskCacheLoadStats {
+  return {
+    fileExists: false,
+    keyMatched: false,
+    loaded: 0,
+    validated: 0,
+    dropped: 0,
+    loadMs: 0,
+    validateMs: 0,
+  };
 }
 
 export function diskCacheKey(identity: DiskCacheIdentity): string {
@@ -91,21 +118,18 @@ export class DiskRecordsCache {
   }
 
   /**
-   * Loads and stat-validates the cache. Returns the kept records plus load
-   * statistics; missing/corrupt/key-mismatched caches yield an empty result
-   * instead of an error.
+   * Loads the cache file without validating entries. This is fast (read +
+   * gunzip + JSON parse) so a cold start can seed the in-memory records
+   * cache immediately and let stat validation run in the background.
+   * Missing/corrupt/key-mismatched caches yield an empty result instead of
+   * an error.
    */
-  async loadValidated(): Promise<{
+  async load(): Promise<{
     records: DiskCacheRecord[];
     stats: DiskCacheLoadStats;
   }> {
-    const stats: DiskCacheLoadStats = {
-      fileExists: false,
-      keyMatched: false,
-      loaded: 0,
-      validated: 0,
-      dropped: 0,
-    };
+    const start = Date.now();
+    const stats = emptyLoadStats();
     let raw: DiskCacheFile | null = null;
     try {
       const buf = await readFile(this.filePath);
@@ -123,15 +147,37 @@ export class DiskRecordsCache {
     } catch {
       // Missing or corrupt cache: fall through with an empty result.
     }
+    stats.loadMs = Date.now() - start;
     if (!raw) return { records: [], stats };
 
     stats.keyMatched = true;
     stats.loaded = raw.records.length;
+    return { records: raw.records, stats };
+  }
+
+  /**
+   * Stat-validates cached records. Returns the entries that still match
+   * plus the keys that must be re-read (missing / changed / moved).
+   */
+  async validate(
+    records: DiskCacheRecord[],
+    onProgress?: (validatedCount: number, total: number) => void,
+  ): Promise<{
+    stats: DiskCacheLoadStats;
+    kept: DiskCacheRecord[];
+    invalidKeys: string[];
+  }> {
+    const start = Date.now();
+    const stats = emptyLoadStats();
+    stats.fileExists = true;
+    stats.keyMatched = true;
+    stats.loaded = records.length;
     const kept: DiskCacheRecord[] = [];
-    for (let i = 0; i < raw.records.length; i += VALIDATE_CONCURRENCY) {
-      const chunk = raw.records.slice(i, i + VALIDATE_CONCURRENCY);
+    const invalidKeys: string[] = [];
+    for (let i = 0; i < records.length; i += VALIDATE_CONCURRENCY) {
+      const chunk = records.slice(i, i + VALIDATE_CONCURRENCY);
       const results = await Promise.all(
-        chunk.map(async (rec): Promise<DiskCacheRecord | null> => {
+        chunk.map(async (rec, index): Promise<{ rec: DiskCacheRecord | null; index: number }> => {
           try {
             const s = await stat(rec.key);
             if (
@@ -141,24 +187,50 @@ export class DiskRecordsCache {
               s.birthtimeMs === rec.stat.birthtimeMs &&
               s.ctimeMs === rec.stat.ctimeMs
             ) {
-              return rec;
+              return { rec, index };
             }
           } catch {
             // File missing or inaccessible.
           }
-          return null;
+          return { rec: null, index };
         }),
       );
-      for (const r of results) {
-        if (r) {
-          kept.push(r);
+      for (const { rec, index } of results) {
+        if (rec) {
+          kept.push(rec);
           stats.validated++;
         } else {
           stats.dropped++;
+          invalidKeys.push(chunk[index].key);
         }
       }
+      onProgress?.(stats.validated, records.length);
     }
-    return { records: kept, stats };
+    stats.validateMs = Date.now() - start;
+    return { stats, kept, invalidKeys };
+  }
+
+  /**
+   * Loads and stat-validates the cache (blocking validation). Used by
+   * tests and kept as a convenience; the workspace normally prefers
+   * `load()` + background `validate()`.
+   */
+  async loadValidated(): Promise<{
+    records: DiskCacheRecord[];
+    stats: DiskCacheLoadStats;
+  }> {
+    const { records, stats } = await this.load();
+    if (!records.length) return { records, stats };
+    const validation = await this.validate(records);
+    return {
+      records: validation.kept,
+      stats: {
+        ...stats,
+        validated: validation.stats.validated,
+        dropped: validation.stats.dropped,
+        validateMs: validation.stats.validateMs,
+      },
+    };
   }
 
   /** Writes the current records cache atomically (temp file + rename). */
@@ -173,6 +245,7 @@ export class DiskRecordsCache {
         stat: entry.stat,
         records: entry.records,
         kind: entry.kind,
+        contentHash: entry.contentHash,
       });
     }
     const payload: DiskCacheFile = {

src/indexer/includeResolver.ts

@@ -44,39 +44,66 @@ export function buildSearchPaths(
 ): SearchPaths {
   const modParentPath = resolve(projectDir, "..");
   const modGranParent = resolve(modParentPath, "..");
+  const sdk = sdkDir && sdkDir.trim() ? resolve(sdkDir) : "";
+  const sdkItems = (items: string[]): string[] => (sdk ? items : []);
   return {
     DATA: [
-      sdkDir,
+      ...sdkItems([sdk]),
       modGranParent,
       join(projectDir, "Data"),
-      join(sdkDir, "Mods"),
+      ...sdkItems([join(sdk, "Mods")]),
       modParentPath,
-      join(sdkDir, "SageXml"),
+      ...sdkItems([join(sdk, "SageXml")]),
       ...(extra?.DATA ?? []),
     ],
     ART: [
-      sdkDir,
+      ...sdkItems([sdk]),
       modGranParent,
       join(projectDir, "Art1"),
       join(projectDir, "Art"),
-      join(sdkDir, "Mods"),
+      ...sdkItems([join(sdk, "Mods")]),
       modParentPath,
-      join(sdkDir, "Art"),
+      ...sdkItems([join(sdk, "Art")]),
       ...(extra?.ART ?? []),
     ],
     AUDIO: [
-      sdkDir,
+      ...sdkItems([sdk]),
       modGranParent,
       join(projectDir, "Audio1"),
       join(projectDir, "Audio"),
-      join(sdkDir, "Mods"),
+      ...sdkItems([join(sdk, "Mods")]),
       modParentPath,
-      join(sdkDir, "Audio"),
+      ...sdkItems([join(sdk, "Audio")]),
       ...(extra?.AUDIO ?? []),
     ],
   };
 }
 
+/**
+ * Search paths used to resolve a `manifestSource` back to the original
+ * vanilla SDK source file.
+ *
+ * `manifestSource` records where the asset came from when the vanilla
+ * manifest was compiled; it is not an Include path that should be resolved
+ * with the current mod's BAB search order. If a mod shadows the same DATA:
+ * path (for example `Data/globaldata/weapon.xml` exists in both the mod and
+ * `SageXml`), the manifest definition must still point at the SageXml file.
+ *
+ * DATA/ART/AUDIO are resolved against the SDK root first (matching the
+ * vanilla BAB `/data "/art" /audio` order), then against the corresponding
+ * SDK source folder. ART/AUDIO source files are not shipped for most assets,
+ * so those resolutions usually return null and callers fall back to
+ * manifest-only behavior.
+ */
+export function buildVanillaSearchPaths(sdkDir: string): SearchPaths {
+  const sdk = sdkDir && sdkDir.trim() ? resolve(sdkDir) : "";
+  return {
+    DATA: sdk ? [sdk, join(sdk, "SageXml")] : [],
+    ART: sdk ? [sdk, join(sdk, "Art")] : [],
+    AUDIO: sdk ? [sdk, join(sdk, "Audio")] : [],
+  };
+}
+
 function splitPrefix(source: string): { prefix: SourcePrefix; rest: string } {
   for (const prefix of PREFIXES) {
     if (source.toUpperCase().startsWith(`${prefix}:`)) {

src/indexer/indexer.ts

@@ -27,6 +27,7 @@ import {
   type ResolveResult,
   type SearchPaths,
 } from "./includeResolver";
+import { validateSdkPath } from "../sdk";
 import {
   buildExistenceSnapshot,
   type ExistenceSnapshot,
@@ -40,14 +41,26 @@ import {
 } from "./manifestParser";
 import { canonicalTypeName } from "../model/schemaModel";
 import { collectSourceCandidates } from "./fileScanner";
-import { DocumentCache, IncludeResolveCache, IndexRecordsCache, normKey } from "./caches";
+import {
+  contentHash,
+  DocumentCache,
+  IncludeResolveCache,
+  IndexRecordsCache,
+  normKey,
+  recordsHash,
+} from "./caches";
 import type { IndexRecordsCacheEntry } from "./caches";
 import { scanXmlShallow } from "./shallowScan";
 import {
   extractIndexRecords,
   recordsFromShallow,
+  type IndexRecords,
   type IndexRecordXi,
 } from "./records";
+import {
+  buildReferenceIndex,
+  type ReferenceRecordSource,
+} from "./referenceIndex";
 import type {
   AssetDef,
   DefineDef,
@@ -55,6 +68,7 @@ import type {
   IndexedFile,
   ModIndex,
   ParsedFile,
+  ReferenceSite,
   SourceCandidate,
   StreamInfo,
 } from "./types";
@@ -110,6 +124,16 @@ export class ModIndexer {
   private assetsById = new Map<string, AssetDef[]>();
   private defines = new Map<string, DefineDef[]>();
   private files = new Map<string, IndexedFile>();
+  /**
+   * Records exactly as the current build's walk saw them (path -> records +
+   * content hash). The reverse reference index is built from this map, never
+   * from the shared records cache, so a watcher invalidation or a feature
+   * re-read (readDom) mid-build cannot desync references from assets.
+   */
+  private buildRecords = new Map<
+    string,
+    { file: string; records: IndexRecords; recordsHash: string }
+  >();
   private streams: StreamInfo[] = [];
   private manifests = new Map<string, ManifestInfo>();
   private sourceCandidates: SourceCandidate[] = [];
@@ -117,11 +141,17 @@ export class ModIndexer {
   private visitedAll = new Set<string>();
   private visitedInstance = new Set<string>();
   private manifestAssetKeys = new Set<string>();
+  /** True when the SDK is missing/not an SDK: SDK-only includes are suppressed. */
+  private sdkUnusable: boolean;
+  private suppressedSdkIncludeCount = 0;
 
   constructor(private opts: IndexOptions) {
     this.searchPaths = buildSearchPaths(opts.sdkDir, opts.projectDir, {
       DATA: opts.additionalDataSearchPaths,
     });
+    const sdkStatus = validateSdkPath(opts.sdkDir);
+    this.sdkUnusable =
+      sdkStatus.status === "missing" || sdkStatus.status === "not-sdk";
     // Caches may be owned by the workspace so they survive rebuilds.
     this.docs = opts.documentCache ?? new DocumentCache();
     this.recordsCache = opts.recordsCache ?? new IndexRecordsCache();
@@ -152,7 +182,27 @@ export class ModIndexer {
     // ~2.6 GB of art assets on a mechanical drive).
     if (trust) {
       const rec = this.recordsCache.get(key);
-      if (rec) return this.recordsParsed(path, rec);
+      if (rec) {
+        if (rec.validated === false) {
+          // Seeded from disk but not stat-validated yet. During phase A an
+          // art file only needs registration (no content), so reuse the
+          // cached stamp; its records are consumed only after validation.
+          if (opts?.deferArt && rec.kind === "shallow" && rec.stat) {
+            const file: IndexedFile = { path: resolve(path), stat: rec.stat };
+            this.files.set(key, file);
+            return {
+              file,
+              parse: null,
+              records: null,
+              lineMap: null,
+              deferredArt: true,
+            };
+          }
+          // Fall through: the stat-verifying path below checks this entry.
+        } else {
+          return this.recordsParsed(path, rec);
+        }
+      }
       const cached = this.docs.get(key);
       if (cached) {
         this.files.set(key, cached.file);
@@ -171,6 +221,21 @@ export class ModIndexer {
         rec.stat.birthtimeMs === st.birthtimeMs &&
         rec.stat.ctimeMs === st.ctimeMs
       ) {
+        rec.validated = true;
+        // Force rebuilds (Re-index workspace) verify full-XML content even
+        // when every stat signal matches: external drives (FAT32/exFAT) can
+        // rewrite a file with the same size and coarse timestamps.
+        if (
+          this.opts.trustUnchanged === false &&
+          rec.kind === "full" &&
+          rec.contentHash
+        ) {
+          const text = stripBom(await readFile(path, "utf8"));
+          if (contentHash(text) === rec.contentHash) {
+            return this.recordsParsed(path, rec);
+          }
+          return this.parseFullXml(path, st, text);
+        }
         return this.recordsParsed(path, rec);
       }
       const hit = this.docs.get(key);
@@ -235,27 +300,7 @@ export class ModIndexer {
         return parsed;
       }
       const text = stripBom(await readFile(path, "utf8"));
-      const lineMap = new LineMap(text);
-      const parse = parseXml(text);
-      const records = extractIndexRecords(parse, lineMap);
-      const parsed: ParsedFile = {
-        file: {
-          path: resolve(path),
-          stat: {
-            mtimeMs: st.mtimeMs,
-            size: st.size,
-            birthtimeMs: st.birthtimeMs,
-            ctimeMs: st.ctimeMs,
-          },
-        },
-        parse,
-        records,
-        lineMap,
-      };
-      this.docs.set(parsed);
-      this.recordsCache.set(key, { stat: parsed.file.stat, records, kind: "full" });
-      this.files.set(key, parsed.file);
-      return parsed;
+      return this.parseFullXml(path, st, text);
     } catch {
       const parsed: ParsedFile = {
         file: { path: resolve(path), stat: null },
@@ -313,6 +358,40 @@ export class ModIndexer {
     return { file, parse: null, records: entry.records, lineMap: null };
   }
 
+  /**
+   * Parses a full XML document from its text, caches records (with a content
+   * hash) and the DOM, and registers the file in this build.
+   */
+  private parseFullXml(path: string, st: Stats, text: string): ParsedFile {
+    const key = normKey(path);
+    const lineMap = new LineMap(text);
+    const parse = parseXml(text);
+    const records = extractIndexRecords(parse, lineMap, text);
+    const parsed: ParsedFile = {
+      file: {
+        path: resolve(path),
+        stat: {
+          mtimeMs: st.mtimeMs,
+          size: st.size,
+          birthtimeMs: st.birthtimeMs,
+          ctimeMs: st.ctimeMs,
+        },
+      },
+      parse,
+      records,
+      lineMap,
+    };
+    this.docs.set(parsed);
+    this.recordsCache.set(key, {
+      stat: parsed.file.stat,
+      records,
+      kind: "full",
+      contentHash: contentHash(text),
+    });
+    this.files.set(key, parsed.file);
+    return parsed;
+  }
+
   /**
    * Reads a document and guarantees a DOM parse tree. Used for root-level
    * <xi:include> xpointer selection (rare) and by the document-local scope
@@ -341,27 +420,7 @@ export class ModIndexer {
       }
       if (st.size > MAX_PARSE_BYTES) return null;
       const text = stripBom(await readFile(path, "utf8"));
-      const lineMap = new LineMap(text);
-      const parse = parseXml(text);
-      const records = extractIndexRecords(parse, lineMap);
-      const parsed: ParsedFile = {
-        file: {
-          path: resolve(path),
-          stat: {
-            mtimeMs: st.mtimeMs,
-            size: st.size,
-            birthtimeMs: st.birthtimeMs,
-            ctimeMs: st.ctimeMs,
-          },
-        },
-        parse,
-        records,
-        lineMap,
-      };
-      this.docs.set(parsed);
-      this.recordsCache.set(key, { stat: parsed.file.stat, records, kind: "full" });
-      this.files.set(key, parsed.file);
-      return parsed;
+      return this.parseFullXml(path, st, text);
     } catch {
       return null;
     }
@@ -424,6 +483,8 @@ export class ModIndexer {
 
   async build(onPhase?: (index: ModIndex) => void | Promise<void>): Promise<ModIndex> {
     const start = Date.now();
+    this.buildRecords.clear();
+    this.suppressedSdkIncludeCount = 0;
     // Root list only; directories are listed lazily on first query, so the
     // XML phase does not pay an upfront recursive enumeration of the SDK.
     this.existence = buildExistenceSnapshot(this.searchPaths);
@@ -467,6 +528,17 @@ export class ModIndexer {
       }
     }
     this.timings.walkMs = Date.now() - walkStart;
+    if (this.suppressedSdkIncludeCount > 0) {
+      this.diagnostics.push({
+        file:
+          staticEntry ?? join(this.opts.projectDir, "Data"),
+        line: 0,
+        message:
+          "SDK path is not configured or invalid; DATA:/ART:/AUDIO: includes are not resolved (set ra3modxml.sdkPath).",
+        severity: "information",
+        code: "sdk-not-configured",
+      });
+    }
 
     // ── Source completion candidates ──
     const candidatesStart = Date.now();
@@ -501,9 +573,17 @@ export class ModIndexer {
     // global.xml, audio.xml placeholders) but only its shallow XML files are
     // relevant. These candidates take precedence over same-named files found
     // deeper in the search paths (e.g. SageXml/Static.xml).
-    const sdkRootXml = (await readdir(this.opts.sdkDir)).filter(
-      (f) => f.toLowerCase().endsWith(".xml"),
-    );
+    let sdkRootXml: string[] = [];
+    if (this.opts.sdkDir) {
+      try {
+        sdkRootXml = (await readdir(this.opts.sdkDir)).filter(
+          (f) => f.toLowerCase().endsWith(".xml"),
+        );
+      } catch {
+        // Missing/inaccessible SDK root: run in project-only mode. All other
+        // SDK search roots already degrade to empty lists.
+      }
+    }
     const sdkRootCandidates: SourceCandidate[] = sdkRootXml.map((f) => ({
       source: `DATA:${f}`,
       path: resolve(this.opts.sdkDir, f),
@@ -561,6 +641,15 @@ export class ModIndexer {
     for (const [id, defs] of this.assetsById) assetsById.set(id, defs.slice());
     const defines = new Map<string, DefineDef[]>();
     for (const [name, defs] of this.defines) defines.set(name, defs.slice());
+    const references = this.buildReferences();
+    const referenceCount = [...references.values()].reduce(
+      (sum, sites) => sum + sites.length,
+      0,
+    );
+    const recordsHashes = new Map<string, string>();
+    for (const [key, entry] of this.buildRecords) {
+      recordsHashes.set(key, entry.recordsHash);
+    }
 
     return {
       projectDir: resolve(this.opts.projectDir),
@@ -575,6 +664,8 @@ export class ModIndexer {
       manifests: new Map(this.manifests),
       sourceCandidates: this.sourceCandidates.slice(),
       diagnostics: this.diagnostics.slice(),
+      references,
+      recordsHashes,
       stats: {
         projectDir: resolve(this.opts.projectDir),
         sdkDir: resolve(this.opts.sdkDir),
@@ -596,6 +687,7 @@ export class ModIndexer {
         walkMs: this.timings.walkMs,
         artScanMs: this.timings.artScanMs,
         assetCount: [...this.assets.values()].reduce((sum, byId) => sum + byId.size, 0),
+        referenceCount,
         defineCount: this.defines.size,
         manifestFiles: this.manifests.size,
         manifestAssetCount,
@@ -606,6 +698,38 @@ export class ModIndexer {
     };
   }
 
+  /**
+   * Resolves the per-file reference records collected during this build
+   * against the current asset maps. Only files touched by this build are
+   * included, so stale cache entries for files that left the include graph
+   * never leak into the reverse index.
+   */
+  private buildReferences(): Map<string, ReferenceSite[]> {
+    const sources: ReferenceRecordSource[] = [];
+    for (const { file, records } of this.buildRecords.values()) {
+      sources.push({ file, records });
+    }
+    return buildReferenceIndex(sources, {
+      assets: this.assets,
+      assetsById: this.assetsById,
+    });
+  }
+
+  /**
+   * Remembers the records exactly as this build saw them (plus the content
+   * hash when the file was fully parsed / cached with one), so snapshots can
+   * build references from the same source of truth as the asset maps.
+   */
+  private noteBuildRecords(parsed: ParsedFile): void {
+    if (!parsed.records) return;
+    const key = normKey(parsed.file.path);
+    this.buildRecords.set(key, {
+      file: parsed.file.path,
+      records: parsed.records,
+      recordsHash: recordsHash(parsed.records),
+    });
+  }
+
   // ── Include walk ──────────────────────────────────────────────────
 
   private async walk(
@@ -670,6 +794,7 @@ export class ModIndexer {
   ): Promise<void> {
     const records = parsed.records;
     if (!records) return;
+    this.noteBuildRecords(parsed);
     const file = parsed.file.path;
     const origin = this.originOf(file);
 
@@ -701,6 +826,10 @@ export class ModIndexer {
     for (const inc of records.includes) {
       const resolved = this.resolveCached(inc.source, dirname(file));
       if (!resolved.path) {
+        if (this.shouldSuppressMissingInclude(inc.source)) {
+          this.suppressedSdkIncludeCount++;
+          continue;
+        }
         this.diagnostics.push({
           file,
           line: inc.line,
@@ -731,6 +860,10 @@ export class ModIndexer {
     for (const xi of records.nestedXiIncludes) {
       const resolved = this.resolveCached(xi.href, dirname(file));
       if (!resolved.path) {
+        if (this.shouldSuppressMissingInclude(xi.href)) {
+          this.suppressedSdkIncludeCount++;
+          continue;
+        }
         this.diagnostics.push({
           file,
           line: xi.line,
@@ -762,6 +895,10 @@ export class ModIndexer {
   ): Promise<void> {
     const resolved = this.resolveCached(xi.href, dirname(parentFile));
     if (!resolved.path) {
+      if (this.shouldSuppressMissingInclude(xi.href)) {
+        this.suppressedSdkIncludeCount++;
+        return;
+      }
       this.diagnostics.push({
         file: parentFile,
         line: xi.line,
@@ -853,12 +990,19 @@ export class ModIndexer {
   private originOf(path: string): "project" | "sdk" {
     const p = resolve(path).toLowerCase();
     const project = resolve(this.opts.projectDir).toLowerCase();
-    const sdk = resolve(this.opts.sdkDir).toLowerCase();
+    const sdk = this.opts.sdkDir
+      ? resolve(this.opts.sdkDir).toLowerCase()
+      : "";
     if (p.startsWith(project + "\\")) return "project";
     if (sdk && p.startsWith(sdk + "\\")) return "sdk";
     return "project";
   }
 
+  /** DATA:/ART:/AUDIO: misses are expected when no usable SDK is configured. */
+  private shouldSuppressMissingInclude(source: string): boolean {
+    return this.sdkUnusable && /^(DATA|ART|AUDIO):/i.test(source.trim());
+  }
+
   private addAsset(def: AssetDef): void {
     // Keep the original case: type names are matched against the XSD model.
     const typeKey = def.type;
@@ -870,14 +1014,32 @@ export class ModIndexer {
     }
     const arr = byId.get(idKey);
     if (arr) {
-      if (arr.some((a) => a.file === def.file && a.line === def.line)) return;
+      if (
+        arr.some(
+          (a) =>
+            a.type === def.type &&
+            a.file === def.file &&
+            a.line === def.line,
+        )
+      ) {
+        return;
+      }
       arr.push(def);
     } else {
       byId.set(idKey, [def]);
     }
     const all = this.assetsById.get(idKey);
     if (all) {
-      if (all.some((a) => a.file === def.file && a.line === def.line)) return;
+      if (
+        all.some(
+          (a) =>
+            a.type === def.type &&
+            a.file === def.file &&
+            a.line === def.line,
+        )
+      ) {
+        return;
+      }
       all.push(def);
     } else {
       this.assetsById.set(idKey, [def]);

src/indexer/localScope.ts

@@ -59,7 +59,7 @@ export async function buildDocumentScope(
   const lineMap = new LineMap(text);
   const parse = parseXml(text);
   const builder = new OverlayBuilder(ctx);
-  await builder.addEntry(uri, parse, lineMap);
+  await builder.addEntry(uri, parse, lineMap, text);
 
   const expanded = await expandDocument(uri, parse, {
     resolve: (source, currentDir) =>
@@ -115,6 +115,8 @@ export function withLocalOverlay(
       manifests: new Map(),
       sourceCandidates: [],
       diagnostics: [],
+      references: new Map(),
+      recordsHashes: new Map(),
       stats: {
         projectDir,
         sdkDir,
@@ -134,6 +136,7 @@ export function withLocalOverlay(
         walkMs: 0,
         artScanMs: 0,
         assetCount: 0,
+        referenceCount: 0,
         defineCount: 0,
         manifestFiles: 0,
         manifestAssetCount: 0,
@@ -164,12 +167,13 @@ class OverlayBuilder {
     path: string,
     parse: XmlDocument,
     lineMap: LineMap,
+    text: string,
   ): Promise<void> {
     this.lineMaps.set(scopePathKey(path), lineMap);
     await this.addParsed({
       file: { path: resolve(path), stat: null },
       parse,
-      records: extractIndexRecords(parse, lineMap),
+      records: extractIndexRecords(parse, lineMap, text),
       lineMap,
     }, 0);
   }
@@ -240,14 +244,32 @@ class OverlayBuilder {
     }
     const arr = byId.get(idKey);
     if (arr) {
-      if (arr.some((a) => a.file === def.file && a.line === def.line)) return;
+      if (
+        arr.some(
+          (a) =>
+            a.type === def.type &&
+            a.file === def.file &&
+            a.line === def.line,
+        )
+      ) {
+        return;
+      }
       arr.push(def);
     } else {
       byId.set(idKey, [def]);
     }
     const all = this.overlay.assetsById.get(idKey);
     if (all) {
-      if (all.some((a) => a.file === def.file && a.line === def.line)) return;
+      if (
+        all.some(
+          (a) =>
+            a.type === def.type &&
+            a.file === def.file &&
+            a.line === def.line,
+        )
+      ) {
+        return;
+      }
       all.push(def);
     } else {
       this.overlay.assetsById.set(idKey, [def]);
@@ -257,7 +279,7 @@ class OverlayBuilder {
   private originOf(path: string): "project" | "sdk" | "manifest" {
     const p = resolve(path).toLowerCase();
     const project = resolve(this.ctx.projectDir).toLowerCase();
-    const sdk = resolve(this.ctx.sdkDir).toLowerCase();
+    const sdk = this.ctx.sdkDir ? resolve(this.ctx.sdkDir).toLowerCase() : "";
     if (p.startsWith(project + "\\")) return "project";
     if (sdk && p.startsWith(sdk + "\\")) return "sdk";
     return "project";

src/indexer/logicalTree.ts

@@ -169,12 +169,26 @@ async function expandXi(
     if (!target?.parse?.root) return;
 
     const xpointer = xi.attrs.find((a) => a.name === "xpointer")?.value ?? "";
-    const selected = xpointer
-      ? findXPointerContainer(target.parse, xpointer)?.children ?? []
-      : target.parse.root.children;
-
-    for (const sel of selected) {
-      await handleChild(sel, logicalParent, resolved, depth + 1, ctx, elements, stack);
+    if (xpointer) {
+      const container = findXPointerContainer(target.parse, xpointer);
+      if (!container) return;
+      for (const sel of container.children) {
+        await handleChild(sel, logicalParent, resolved, depth + 1, ctx, elements, stack);
+      }
+    } else {
+      // XInclude semantics: without an xpointer the whole target document is
+      // included, i.e. its root element replaces the <xi:include> node.
+      // RA3 fragments such as GenericCelestialBuildingSuicide.xml rely on this
+      // to splice the module element itself (CreateObjectDie) into the parent.
+      await handleChild(
+        target.parse.root,
+        logicalParent,
+        resolved,
+        depth + 1,
+        ctx,
+        elements,
+        stack,
+      );
     }
   } finally {
     stack.delete(key);

src/indexer/manifestParser.ts

@@ -2,6 +2,8 @@
  * Parser for SAGE `.manifest` files, ported from OpenSAGE
  * (src/OpenSage.Game/Data/StreamFS/ManifestFile.cs, commit d45d361).
  *
+ * Licensed under LGPL-3.0 (derived from OpenSAGE); see LICENSE.
+ *
  * The manifest is a binary index produced by BinaryAssetBuilder: every asset
  * compiled into a stream is listed with hashed type/instance ids, an offset
  * into the asset-name string buffer, and an optional source file name.

src/indexer/records.ts

@@ -12,6 +12,12 @@
 
 import type { LineMap, XmlDocument } from "../language/xmlParser";
 import type { ShallowDocument } from "./shallowScan";
+import { attributesOfType, typeInfo } from "../model/schemaModel";
+import { resolveElementType } from "../language/typeContext";
+import {
+  isReferenceAttributeOfType,
+  isReferenceContentType,
+} from "./refs";
 
 export interface IndexRecordAsset {
   /** Top-level element name, e.g. "W3DContainer". */
@@ -42,6 +48,27 @@ export interface IndexRecordXi {
   line: number;
 }
 
+export interface IndexRecordReference {
+  /** "attr" for attribute values, "content" for simple-content text. */
+  kind: "attr" | "content";
+  /**
+   * XSD reference target type (from `xas:refType`), or null for untyped
+   * `isRef` references and `inheritFrom` (which filters by the element's own
+   * type via `selfType`).
+   */
+  refType: string | null;
+  /** Element type used by `inheritFrom` filtering; null otherwise. */
+  selfType: string | null;
+  /** The referenced id text (whole attribute value / trimmed content). */
+  value: string;
+  /** 1-based line of the value. */
+  line: number;
+  /** Character offset of the value start (relative to the file text). */
+  start: number;
+  /** Character offset one past the value end. */
+  end: number;
+}
+
 export interface IndexRecords {
   assets: IndexRecordAsset[];
   defines: IndexRecordDefine[];
@@ -50,6 +77,8 @@ export interface IndexRecords {
   rootXiIncludes: IndexRecordXi[];
   /** <xi:include> elements nested anywhere else in the document. */
   nestedXiIncludes: IndexRecordXi[];
+  /** Typed global-asset references (attribute values + simple content). */
+  references: IndexRecordReference[];
 }
 
 const INCLUDE_TYPES = new Set(["all", "instance", "reference"]);
@@ -69,14 +98,21 @@ function localName(tag: string): string {
  * Tags/Includes/Defines), $DEFINE constants, the top-level <Includes> block
  * and root/nested <xi:include> elements.
  */
-export function extractIndexRecords(parse: XmlDocument, lineMap: LineMap): IndexRecords {
+export function extractIndexRecords(
+  parse: XmlDocument,
+  lineMap: LineMap,
+  text: string,
+): IndexRecords {
   const assets: IndexRecordAsset[] = [];
   const defines: IndexRecordDefine[] = [];
   const includes: IndexRecordInclude[] = [];
   const rootXiIncludes: IndexRecordXi[] = [];
   const nestedXiIncludes: IndexRecordXi[] = [];
+  const references: IndexRecordReference[] = [];
   const root = parse.root;
-  if (!root) return { assets, defines, includes, rootXiIncludes, nestedXiIncludes };
+  if (!root) {
+    return { assets, defines, includes, rootXiIncludes, nestedXiIncludes, references };
+  }
 
   for (const child of root.children) {
     const local = localName(child.name);
@@ -142,7 +178,86 @@ export function extractIndexRecords(parse: XmlDocument, lineMap: LineMap): Index
     });
   }
 
-  return { assets, defines, includes, rootXiIncludes, nestedXiIncludes };
+  collectReferenceRecords(parse, lineMap, text, references);
+
+  return { assets, defines, includes, rootXiIncludes, nestedXiIncludes, references };
+}
+
+/**
+ * Walks every element of a fully parsed document and records typed
+ * global-asset references: reference attributes, `inheritFrom` and
+ * simple-content reference text. Local `id` definitions, Poid pipeline-local
+ * references and `$DEFINE`/`=` values are intentionally skipped (the same
+ * semantics as diagnostics / hover / navigation).
+ *
+ * The stored `refType` / `selfType` pair is exactly what
+ * `resolveReferenceTargetsForType` derives from the element context, so the
+ * reverse reference index can resolve these records after the whole index is
+ * built without re-walking the document or re-resolving element types.
+ */
+function collectReferenceRecords(
+  parse: XmlDocument,
+  lineMap: LineMap,
+  text: string,
+  out: IndexRecordReference[],
+): void {
+  for (const el of parse.elements) {
+    const elType = resolveElementType(el);
+
+    for (const attr of el.attrs) {
+      if (!attr.hasValue) continue;
+      if (!isReferenceAttributeOfType(elType, attr.name)) continue;
+      const value = attr.value;
+      if (!value || value.startsWith("$") || value.startsWith("=")) continue;
+      let refType: string | null = null;
+      let selfType: string | null = null;
+      if (attr.name.toLowerCase() === "inheritfrom") {
+        selfType = elType;
+      } else if (elType) {
+        refType =
+          attributesOfType(elType).find((a) => a.name === attr.name)?.refType ??
+          null;
+      }
+      out.push({
+        kind: "attr",
+        refType,
+        selfType,
+        value,
+        line: lineOf(lineMap, attr.valueStart),
+        start: attr.valueStart,
+        end: attr.valueEnd,
+      });
+    }
+
+    if (
+      elType &&
+      isReferenceContentType(elType) &&
+      !el.selfClosing &&
+      el.closeTagStart >= 0
+    ) {
+      const raw = text.slice(el.startTagEnd, el.closeTagStart);
+      const value = raw.trim();
+      if (
+        !value ||
+        value.startsWith("$") ||
+        value.startsWith("=") ||
+        value.includes("<")
+      ) {
+        continue;
+      }
+      const start = el.startTagEnd + raw.indexOf(value);
+      const info = typeInfo(elType);
+      out.push({
+        kind: "content",
+        refType: info?.kind === "simple" ? info.refType : null,
+        selfType: null,
+        value,
+        line: lineOf(lineMap, start),
+        start,
+        end: start + value.length,
+      });
+    }
+  }
 }
 
 /** Converts a shallow scan (offsets) into index records (1-based lines). */
@@ -173,5 +288,6 @@ export function recordsFromShallow(scan: ShallowDocument, lineMap: LineMap): Ind
       xpointer: x.xpointer,
       line: lineOf(lineMap, x.start),
     })),
+    references: [],
   };
 }

src/indexer/referenceIndex.ts

@@ -0,0 +1,222 @@
+/**
+ * Reverse reference index built from per-file reference records.
+ *
+ * The indexer stores compact reference records per file (attribute values,
+ * simple-content text and inheritFrom, with XSD `refType`/`selfType` context
+ * captured at parse time). After the include walk, this module resolves every
+ * record against the final asset maps and produces:
+ *
+ *   definition key -> reference sites
+ *
+ * which powers CodeLens reference counts, semantic Find All References and
+ * the "unreferenced assets" report. Pure TypeScript: no vscode dependency.
+ */
+
+import { extractIndexRecords, type IndexRecords } from "./records";
+import {
+  filterAndScoreDefs,
+  isReferenceTargetType,
+  type ReferenceLookup,
+} from "./refs";
+import { buildVanillaSearchPaths, resolveSource } from "./includeResolver";
+import { normKey, recordsHash } from "./caches";
+import { LineMap, parseXml } from "../language/xmlParser";
+import type { AssetDef, ModIndex, ReferenceSite } from "./types";
+
+/** A file whose reference records should be resolved. */
+export interface ReferenceRecordSource {
+  /** Absolute path of the referencing file. */
+  file: string;
+  records: IndexRecords;
+}
+
+/** Stable key identifying one specific asset definition. */
+export function assetDefKey(
+  def: Pick<AssetDef, "type" | "id" | "file" | "line">,
+): string {
+  return `${def.type}\u0000${def.id.toLowerCase()}\u0000${def.file.toLowerCase()}\u0000${def.line}`;
+}
+
+/**
+ * Resolves per-file reference records against the asset lookup and returns
+ * the reverse map. A record resolves to every definition that satisfies its
+ * `refType` / `selfType` context (same strict filtering as go-to-definition),
+ * so same-name ids of different types never share reference counts.
+ */
+export function buildReferenceIndex(
+  sources: Iterable<ReferenceRecordSource>,
+  lookup: ReferenceLookup,
+): Map<string, ReferenceSite[]> {
+  const map = new Map<string, ReferenceSite[]>();
+  for (const { file, records } of sources) {
+    for (const ref of records.references) {
+      const defs = lookup.assetsById.get(ref.value.toLowerCase());
+      if (!defs?.length) continue;
+      const targets = filterAndScoreDefs(defs, ref.refType, ref.selfType);
+      for (const target of targets) {
+        const key = assetDefKey(target.def);
+        let sites = map.get(key);
+        if (!sites) {
+          sites = [];
+          map.set(key, sites);
+        }
+        sites.push({
+          file,
+          line: ref.line,
+          start: ref.start,
+          end: ref.end,
+          kind: ref.kind,
+        });
+      }
+    }
+  }
+  return map;
+}
+
+/** Reference sites for one definition (empty when the index has none). */
+export function referenceSitesForDef(
+  idx: Pick<ModIndex, "references"> | null | undefined,
+  def: Pick<AssetDef, "type" | "id" | "file" | "line">,
+): ReferenceSite[] {
+  return idx?.references?.get(assetDefKey(def)) ?? [];
+}
+
+function normFileKey(path: string): string {
+  return path.replace(/\\/g, "/").toLowerCase();
+}
+
+/**
+ * Reference sites that belong to a definition opened in the editor.
+ *
+ * Besides the definition's own reverse-index bucket, this unions the sites
+ * of manifest definitions that map back to the same XML source file via
+ * `manifestSource`. `manifestSource` is resolved with the SDK-only search
+ * paths (not the current mod's BAB order), so a mod file shadowing the same
+ * DATA: path is never mistaken for the vanilla source. A manifest asset with
+ * a resolvable SageXml source is semantically the same asset as that XML
+ * definition, so references to it should show up on the source file's
+ * CodeLens too (Find All References already sees them because it unions
+ * every same-id/type definition).
+ */
+export function referenceSitesForDefinition(
+  idx: ModIndex,
+  def: Pick<AssetDef, "type" | "id" | "file" | "line">,
+): ReferenceSite[] {
+  const sites = referenceSitesForDef(idx, def);
+  const byId = idx.assets.get(def.type)?.get(def.id.toLowerCase());
+  if (!byId?.length) return sites;
+
+  const defFile = normFileKey(def.file);
+  const vanillaPaths = buildVanillaSearchPaths(idx.sdkDir);
+  const seen = new Set(
+    sites.map((s) => `${s.file}\u0000${s.start}\u0000${s.end}\u0000${s.kind}`),
+  );
+  for (const other of byId) {
+    if (other.origin !== "manifest" || !other.manifestSource) continue;
+    const resolved = resolveSource(other.manifestSource, null, vanillaPaths).path;
+    if (!resolved || normFileKey(resolved) !== defFile) continue;
+    for (const site of referenceSitesForDef(idx, other)) {
+      const key = `${site.file}\u0000${site.start}\u0000${site.end}\u0000${site.kind}`;
+      if (seen.has(key)) continue;
+      seen.add(key);
+      sites.push(site);
+    }
+  }
+  return sites;
+}
+
+export interface UnreferencedOptions {
+  /**
+   * When true (default), only report types that are reference targets by
+   * design. Auto-registered / structural types (settings, map metadata,
+   * w3x sub-assets...) are excluded because zero references is their normal
+   * state.
+   */
+  onlyReferenceTargetTypes?: boolean;
+}
+
+/**
+ * Project asset definitions with zero incoming references, grouped by type.
+ * Manifest / SDK definitions and `instance`-only assets are never reported
+ * (they are not part of the compiled stream in the same way).
+ */
+export function unreferencedByType(
+  idx: ModIndex,
+  options: UnreferencedOptions = {},
+): Map<string, AssetDef[]> {
+  const onlyReferenceTargets = options.onlyReferenceTargetTypes ?? true;
+  const out = new Map<string, AssetDef[]>();
+  for (const [type, byId] of idx.assets) {
+    if (onlyReferenceTargets && !isReferenceTargetType(type)) continue;
+    const defs: AssetDef[] = [];
+    for (const arr of byId.values()) {
+      for (const def of arr) {
+        if (def.origin !== "project" || def.viaInstance) continue;
+        if (referenceSitesForDef(idx, def).length > 0) continue;
+        defs.push(def);
+      }
+    }
+    if (defs.length) {
+      defs.sort((a, b) => a.id.localeCompare(b.id));
+      out.set(type, defs);
+    }
+  }
+  return out;
+}
+
+/** Minimal workspace surface needed by the records-desync self-heal. */
+export interface RecordsSyncWorkspace {
+  index: ModIndex | null;
+  invalidate(path: string): void;
+  scheduleRebuild(reason: string): void;
+}
+
+/** Minimal document surface (vscode.TextDocument subset, no vscode dep). */
+export interface RecordsSyncDocument {
+  uri: { fsPath: string; scheme?: string };
+  isDirty?: boolean;
+  getText(): string;
+}
+
+/**
+ * True when a clean (saved) document's text no longer matches the records the
+ * published snapshot was built from. This catches cache entries that slipped
+ * through stat validation (e.g. a rewrite with preserved timestamps on an
+ * external drive) or watcher events lost during a drive reconnect.
+ */
+export function documentRecordsDesynced(
+  idx: ModIndex,
+  fsPath: string,
+  text: string,
+): boolean {
+  const expected = idx.recordsHashes?.get(normKey(fsPath));
+  if (expected == null) return false;
+  const lineMap = new LineMap(text);
+  const records = extractIndexRecords(parseXml(text), lineMap, text);
+  return recordsHash(records) !== expected;
+}
+
+/**
+ * Self-heal: when the open, saved document's content differs from the
+ * snapshot's records hash, invalidate exactly that file and schedule a
+ * rebuild. Returns true when a rebuild was scheduled. Unsaved (dirty)
+ * documents are skipped — the editor text is intentionally ahead of disk.
+ */
+export function scheduleRebuildIfRecordsDesync(
+  ws: RecordsSyncWorkspace,
+  document: RecordsSyncDocument,
+): boolean {
+  if (
+    document.isDirty ||
+    (document.uri.scheme != null && document.uri.scheme !== "file")
+  ) {
+    return false;
+  }
+  const idx = ws.index;
+  if (!idx) return false;
+  const fsPath = document.uri.fsPath;
+  if (!documentRecordsDesynced(idx, fsPath, document.getText())) return false;
+  ws.invalidate(fsPath);
+  ws.scheduleRebuild("records-desync");
+  return true;
+}

src/indexer/refs.ts

@@ -1,17 +1,33 @@
 import {
+  allTypeNames,
   attributesOfType,
+  canonicalTypeName,
   elementTypeName,
   isAssignableTo,
   typeChain,
   typeInfo,
 } from "../model/schemaModel";
-import type { AssetDef, ModIndex } from "./types";
+import type { AssetDef, LocalOverlay } from "./types";
 
 export interface ReferenceTarget {
   def: AssetDef;
   score: number;
 }
 
+/**
+ * The subset of `ModIndex` that reference resolution needs. Kept narrow so
+ * the reverse reference index can resolve records against the indexer's live
+ * maps without constructing a full index snapshot.
+ */
+export interface ReferenceLookup {
+  /** type -> id -> definitions. */
+  assets: Map<string, Map<string, AssetDef[]>>;
+  /** id -> definitions across all types. */
+  assetsById: Map<string, AssetDef[]>;
+  /** Optional document-local overlay (consulted first). */
+  local?: LocalOverlay;
+}
+
 /**
  * True when an attribute is a "pipeline-local" reference that the global
  * asset index cannot judge:
@@ -78,7 +94,7 @@ export function isReferenceAttributeOfType(
  * Returns [] when the attribute is not a typed reference or nothing matches.
  */
 export function resolveReferenceTargets(
-  idx: ModIndex,
+  idx: ReferenceLookup,
   elementType: string,
   attrName: string,
   id: string,
@@ -93,7 +109,7 @@ export function resolveReferenceTargets(
 
 /** Same resolution, driven by a resolved XSD type name. */
 export function resolveReferenceTargetsForType(
-  idx: ModIndex,
+  idx: ReferenceLookup,
   typeName: string | null,
   attrName: string,
   id: string,
@@ -148,7 +164,7 @@ export function isReferenceContentType(typeName: string | null): boolean {
  * (e.g. `GameObjectWeakRef` -> `GameObject`).
  */
 export function resolveContentReferenceTargets(
-  idx: ModIndex,
+  idx: ReferenceLookup,
   typeName: string | null,
   id: string,
 ): ReferenceTarget[] {
@@ -164,7 +180,7 @@ export function resolveContentReferenceTargets(
   return filterAndScoreDefs(defs, refType, null);
 }
 
-function filterAndScoreDefs(
+export function filterAndScoreDefs(
   defs: readonly AssetDef[],
   refType: string | null,
   selfType: string | null,
@@ -204,3 +220,49 @@ export function mergeLocalAndGlobalDefs(
   }
   return out;
 }
+
+let referenceTargetTypeSet: Set<string> | null = null;
+
+/**
+ * The set of XSD types that are "reference targets by design": at least one
+ * typed reference attribute / simple-content reference points at them, or
+ * they are inheritable (`inheritFrom`). Types outside this set are
+ * auto-registered / structural (settings, map metadata, w3x sub-assets...),
+ * so a zero reference count is their normal state and counts would only be
+ * noise.
+ */
+export function referenceTargetTypes(): ReadonlySet<string> {
+  if (referenceTargetTypeSet) return referenceTargetTypeSet;
+  const set = new Set<string>();
+  const add = (t: string | null) => {
+    if (!t) return;
+    set.add(canonicalTypeName(t) ?? t);
+  };
+  for (const typeName of allTypeNames()) {
+    const info = typeInfo(typeName);
+    if (!info) continue;
+    if (info.kind === "complex") {
+      for (const attr of info.attributes) {
+        if (isLocalReferenceAttribute(typeName, attr.name)) continue;
+        if (attr.refType) add(attr.refType);
+      }
+      if (info.attributes.some((a) => a.name.toLowerCase() === "inheritfrom")) {
+        add(typeName);
+      }
+    } else if (
+      info.kind === "simple" &&
+      info.refType &&
+      !typeChain(typeName).includes("Poid")
+    ) {
+      add(info.refType);
+    }
+  }
+  referenceTargetTypeSet = set;
+  return set;
+}
+
+/** True when the type is a designed reference target (see above). */
+export function isReferenceTargetType(typeName: string | null): boolean {
+  if (!typeName) return false;
+  return referenceTargetTypes().has(canonicalTypeName(typeName) ?? typeName);
+}

src/indexer/types.ts

@@ -20,10 +20,31 @@ export interface AssetDef {
   viaInstance?: boolean;
   /** Manifest path for origin === "manifest". */
   manifest?: string;
-  /** Source file recorded inside a manifest (e.g. "DATA:globaldata/armor.xml"). */
+  /**
+   * Source file recorded inside a manifest (e.g. "DATA:globaldata/armor.xml").
+   * This is a path from the vanilla build, so callers resolve it with the
+   * SDK-only search paths (`buildVanillaSearchPaths`), never with the current
+   * mod's BAB include order.
+   */
   manifestSource?: string;
 }
 
+/**
+ * One resolved reference occurrence pointing at an asset definition.
+ * Produced by `buildReferenceIndex` from per-file reference records.
+ */
+export interface ReferenceSite {
+  /** Absolute path of the referencing file. */
+  file: string;
+  /** 1-based line of the reference value. */
+  line: number;
+  /** Character offset of the value start (relative to the file text). */
+  start: number;
+  /** Character offset one past the value end. */
+  end: number;
+  kind: "attr" | "content";
+}
+
 export interface DefineDef {
   name: string;
   value: string;
@@ -121,6 +142,8 @@ export interface IndexStats {
   /** Time spent shallow-scanning deferred art assets (ms). */
   artScanMs: number;
   assetCount: number;
+  /** Total resolved reference sites in the reverse index. */
+  referenceCount: number;
   defineCount: number;
   manifestFiles: number;
   manifestAssetCount: number;
@@ -159,6 +182,20 @@ export interface ModIndex {
   sourceCandidates: SourceCandidate[];
   /** Problems found while indexing (unresolved includes, cycles, ...). */
   diagnostics: IndexerDiagnostic[];
+  /**
+   * Reverse reference index: asset definition key (see
+   * `referenceIndex.assetDefKey`) -> reference sites. Built from the compact
+   * per-file reference records when a snapshot is published, so counts and
+   * Find All References share one semantic source of truth.
+   */
+  references: Map<string, ReferenceSite[]>;
+  /**
+   * normKey(file) -> SHA-1 of the file's compact index records as this
+   * snapshot consumed them. Lets open documents detect "my file changed on
+   * disk but the index still uses older records" and trigger a targeted
+   * rebuild, while ignoring cosmetic text changes (line endings, whitespace).
+   */
+  recordsHashes: Map<string, string>;
   stats: IndexStats;
   /**
    * Document-local overlay (when the index was obtained through the

src/language/xmlParser.ts

@@ -53,6 +53,10 @@ export interface XmlElement {
 
 export interface XmlParseError {
   message: string;
+  /** Stable machine-readable id used by the UI layer for localization. */
+  code: string;
+  /** Dynamic values referenced by the localized message. */
+  params?: Record<string, string>;
   offset: number;
   line: number;
   character: number;
@@ -249,9 +253,21 @@ export function parseXml(text: string): XmlDocument {
   let i = 0;
   const n = text.length;
 
-  const err = (message: string, offset: number) => {
+  const err = (
+    code: string,
+    message: string,
+    offset: number,
+    params?: Record<string, string>,
+  ) => {
     const pos = lineMap.positionAt(offset);
-    errors.push({ message, offset, line: pos.line, character: pos.character });
+    errors.push({
+      code,
+      message,
+      params,
+      offset,
+      line: pos.line,
+      character: pos.character,
+    });
   };
 
   while (i < n) {
@@ -261,7 +277,11 @@ export function parseXml(text: string): XmlDocument {
       // text before the root element - ignore unless it is non-whitespace
       const between = text.slice(i, lt);
       if (between.trim() !== "") {
-        err("Content is not allowed before the root element", i);
+        err(
+          "content-before-root",
+          "Content is not allowed before the root element",
+          i,
+        );
       }
     }
     i = lt;
@@ -270,7 +290,7 @@ export function parseXml(text: string): XmlDocument {
     if (text.startsWith("<!--", i)) {
       const close = text.indexOf("-->", i + 4);
       if (close < 0) {
-        err("Unterminated comment", i);
+        err("unterminated-comment", "Unterminated comment", i);
         break;
       }
       i = close + 3;
@@ -280,7 +300,7 @@ export function parseXml(text: string): XmlDocument {
     if (text.startsWith("<![CDATA[", i)) {
       const close = text.indexOf("]]>", i + 9);
       if (close < 0) {
-        err("Unterminated CDATA section", i);
+        err("unterminated-cdata", "Unterminated CDATA section", i);
         break;
       }
       i = close + 3;
@@ -290,7 +310,7 @@ export function parseXml(text: string): XmlDocument {
     if (text.startsWith("<!DOCTYPE", i) || text.startsWith("<!doctype", i)) {
       const close = text.indexOf(">", i);
       if (close < 0) {
-        err("Unterminated DOCTYPE", i);
+        err("unterminated-doctype", "Unterminated DOCTYPE", i);
         break;
       }
       i = close + 1;
@@ -300,7 +320,11 @@ export function parseXml(text: string): XmlDocument {
     if (text.startsWith("<?", i)) {
       const close = text.indexOf("?>", i + 2);
       if (close < 0) {
-        err("Unterminated processing instruction", i);
+        err(
+          "unterminated-processing-instruction",
+          "Unterminated processing instruction",
+          i,
+        );
         break;
       }
       if (i === 0 && /^<\?xml\s/i.test(text.slice(i, close + 2))) {
@@ -313,15 +337,25 @@ export function parseXml(text: string): XmlDocument {
     if (text.startsWith("</", i)) {
       const gt = text.indexOf(">", i + 2);
       if (gt < 0) {
-        err("Unterminated closing tag", i);
+        err("unterminated-closing-tag", "Unterminated closing tag", i);
         break;
       }
       const name = text.slice(i + 2, gt).trim();
       const top = stack[stack.length - 1];
       if (!top) {
-        err(`Unexpected closing tag </${name}>`, i);
+        err(
+          "unexpected-closing-tag",
+          `Unexpected closing tag </${name}>`,
+          i,
+          { name },
+        );
       } else if (top.name !== name) {
-        err(`Mismatched closing tag: expected </${top.name}>, found </${name}>`, i);
+        err(
+          "mismatched-closing-tag",
+          `Mismatched closing tag: expected </${top.name}>, found </${name}>`,
+          i,
+          { expected: top.name, found: name },
+        );
         // recover: find the matching element on the stack if possible
         let idx = stack.length - 1;
         while (idx >= 0 && stack[idx].name !== name) idx--;
@@ -343,13 +377,13 @@ export function parseXml(text: string): XmlDocument {
     }
     // opening tag
     if (text[i + 1] === "!" || text[i + 1] === "?") {
-      err("Malformed markup", i);
+      err("malformed-markup", "Malformed markup", i);
       i++;
       continue;
     }
     const gt = findTagEnd(text, i + 1);
     if (gt < 0) {
-      err("Unterminated start tag", i);
+      err("unterminated-start-tag", "Unterminated start tag", i);
       // Recovery while typing: an attribute value whose closing quote has not
       // been typed yet makes the scanner run to EOF. End the malformed start
       // tag at the first line break (or EOF) so the rest of the document is
@@ -399,7 +433,9 @@ export function parseXml(text: string): XmlDocument {
     for (const el of stack) {
       const pos = lineMap.positionAt(el.start);
       errors.push({
+        code: "element-never-closed",
         message: `Element <${el.name}> is never closed`,
+        params: { name: el.name },
         offset: el.start,
         line: pos.line,
         character: pos.character,

src/localize.ts

@@ -0,0 +1,63 @@
+import * as vscode from "vscode";
+
+type L10n = {
+  t(message: string, ...args: Array<string | number | boolean>): string;
+  t(
+    message: string,
+    args: Record<string, string | number | boolean>,
+  ): string;
+};
+
+/**
+ * Thin wrapper around VS Code's built-in `l10n.t`.
+ *
+ * The fallback keeps the message unchanged when no bundle is loaded (for
+ * example in unit tests or when the extension runs with the default English
+ * locale), so the same call sites work in production and tests.
+ */
+export function t(
+  message: string,
+  ...args: Array<string | number | boolean>
+): string {
+  const l10n = (vscode as unknown as { l10n?: L10n }).l10n;
+  if (!l10n?.t) return formatIndexed(message, args);
+  try {
+    return l10n.t(message, ...args);
+  } catch {
+    return formatIndexed(message, args);
+  }
+}
+
+/** Named-placeholder variant of {@link t}. */
+export function tN(
+  message: string,
+  args: Record<string, string | number | boolean>,
+): string {
+  const l10n = (vscode as unknown as { l10n?: L10n }).l10n;
+  if (!l10n?.t) return formatNamed(message, args);
+  try {
+    return l10n.t(message, args);
+  } catch {
+    return formatNamed(message, args);
+  }
+}
+
+function formatIndexed(
+  message: string,
+  args: Array<string | number | boolean>,
+): string {
+  return message.replace(/\{(\d+)\}/g, (match, index: string) => {
+    const value = args[Number(index)];
+    return value === undefined ? match : String(value);
+  });
+}
+
+function formatNamed(
+  message: string,
+  args: Record<string, string | number | boolean>,
+): string {
+  return message.replace(/\{([a-zA-Z0-9_]+)\}/g, (match, name: string) => {
+    const value = args[name];
+    return value === undefined ? match : String(value);
+  });
+}

src/model/schemaModel.ts

@@ -92,6 +92,11 @@ export const modelMeta = {
   typeCount: Object.keys(model.types).length,
 };
 
+/** All type names in the XSD model (complex + simple), in model order. */
+export function allTypeNames(): string[] {
+  return Object.keys(model.types);
+}
+
 export function topLevelElements(): string[] {
   return model.topLevelElements;
 }

src/projectRoot.ts

@@ -0,0 +1,177 @@
+/**
+ * Mod project root discovery for RA3 Mod XML.
+ *
+ * Pure TypeScript (no vscode dependency) so the detection rules can be unit
+ * tested and reused by other tools.
+ *
+ * A project root is any directory containing one of the markers the mod
+ * compiler (defaultscript.cs) actually consumes:
+ *   - `Data/Mod.xml`            (static data entry)
+ *   - `Data/additionalmaps/mapmetadata_*.xml` (global data entries)
+ *   - `*.babproj`               (mod SDK project file)
+ *
+ * Discovery works in three directions:
+ *   - upward from a folder (the workspace folder may be `Data` or a deep
+ *     subfolder of a mod);
+ *   - upward from a file (single-file opens without a workspace folder);
+ *   - shallow downward from a container folder (a folder that contains
+ *     several sibling mods).
+ */
+
+import { dirname, join, resolve } from "node:path";
+import { readdirSync } from "node:fs";
+
+export const DEFAULT_MAX_UPWARD_DEPTH = 12;
+export const DEFAULT_MAX_DOWNWARD_DEPTH = 3;
+
+export type ProjectMarkerKind = "mod" | "babproj" | "mapmetadata";
+
+/** Directories that never contain a mod root themselves. */
+const SKIP_DIRECTORY_NAMES = new Set([
+  "data",
+  "art",
+  "art1",
+  "audio",
+  "audio1",
+  "builtmods",
+  "builtmods-quantum",
+  "sageml",
+  "schemas",
+  "xsd",
+  "hlsl",
+  "node_modules",
+  "packages",
+  "dist",
+  "out",
+  "bin",
+  "obj",
+  ".git",
+  ".vs",
+  ".vscode",
+]);
+
+/**
+ * Returns the marker kind found directly under `dir`, or null when `dir` is
+ * not a mod project root. `Data`/`mapmetadata` lookups are case-insensitive.
+ */
+export function projectMarkerKind(dir: string): ProjectMarkerKind | null {
+  const data = findCaseInsensitiveDir(dir, "Data");
+  if (data && hasFileIgnoreCase(data, ["Mod.xml"])) return "mod";
+  const entries = readDirNames(dir);
+  if (entries?.some((e) => e.toLowerCase().endsWith(".babproj"))) {
+    return "babproj";
+  }
+  if (data && hasMapMetadata(data)) return "mapmetadata";
+  return null;
+}
+
+/** True when `dir` is a mod project root (any marker). */
+export function isProjectRoot(dir: string): boolean {
+  return projectMarkerKind(dir) != null;
+}
+
+/**
+ * Walks upward from `startDir` (up to `maxDepth` ancestors) and returns the
+ * nearest directory that carries a project marker, or null.
+ */
+export function findProjectRootUpward(
+  startDir: string,
+  maxDepth = DEFAULT_MAX_UPWARD_DEPTH,
+): string | null {
+  let dir = resolve(startDir);
+  for (let i = 0; i < maxDepth; i++) {
+    if (isProjectRoot(dir)) return dir;
+    const parent = dirname(dir);
+    if (parent === dir) break;
+    dir = parent;
+  }
+  return null;
+}
+
+/** Upward discovery starting from a file's directory (single-file opens). */
+export function findProjectRootForFile(
+  file: string,
+  maxDepth = DEFAULT_MAX_UPWARD_DEPTH,
+): string | null {
+  return findProjectRootUpward(dirname(resolve(file)), maxDepth);
+}
+
+/**
+ * Shallow downward discovery for a workspace folder that contains one or
+ * more mods (e.g. the SDK `Mods` folder or a personal mods container).
+ *
+ * Descends at most `maxDepth` levels, never descends into known non-mod
+ * directories, and stops descending once a directory is itself a project
+ * root (a root's own `Data`/`Art` subtrees are never project containers).
+ * Results are de-duplicated by normalized path.
+ */
+export function discoverProjects(
+  folder: string,
+  maxDepth = DEFAULT_MAX_DOWNWARD_DEPTH,
+): string[] {
+  const out: string[] = [];
+  const seen = new Set<string>();
+  const visit = (dir: string, depth: number): void => {
+    if (depth > maxDepth) return;
+    if (isProjectRoot(dir)) {
+      const key = normKey(dir);
+      if (!seen.has(key)) {
+        seen.add(key);
+        out.push(resolve(dir));
+      }
+      return;
+    }
+    let entries;
+    try {
+      entries = readdirSync(dir, { withFileTypes: true });
+    } catch {
+      return;
+    }
+    for (const entry of entries) {
+      if (!entry.isDirectory()) continue;
+      if (SKIP_DIRECTORY_NAMES.has(entry.name.toLowerCase())) continue;
+      visit(join(dir, entry.name), depth + 1);
+    }
+  };
+  visit(resolve(folder), 0);
+  return out;
+}
+
+function normKey(path: string): string {
+  return resolve(path).toLowerCase();
+}
+
+function readDirNames(dir: string): string[] | null {
+  try {
+    return readdirSync(dir);
+  } catch {
+    return null;
+  }
+}
+
+/** Case-insensitive child directory lookup under `parent`. */
+function findCaseInsensitiveDir(parent: string, wanted: string): string | null {
+  const entries = readDirNames(parent);
+  if (!entries) return null;
+  const hit = entries.find(
+    (e) => e.toLowerCase() === wanted.toLowerCase(),
+  );
+  return hit ? join(parent, hit) : null;
+}
+
+/** True when `dir` contains any of `names` (case-insensitive file names). */
+function hasFileIgnoreCase(dir: string, names: string[]): boolean {
+  const entries = readDirNames(dir);
+  if (!entries) return false;
+  const lower = new Set(entries.map((e) => e.toLowerCase()));
+  return names.some((n) => lower.has(n.toLowerCase()));
+}
+
+/** True when `dataDir/additionalmaps` contains a mapmetadata_*.xml file. */
+function hasMapMetadata(dataDir: string): boolean {
+  const maps = findCaseInsensitiveDir(dataDir, "additionalmaps");
+  if (!maps) return false;
+  const entries = readDirNames(maps);
+  if (!entries) return false;
+  return entries.some((e) => /^mapmetadata_.*\.xml$/i.test(e));
+}

src/sdk.ts

@@ -0,0 +1,179 @@
+/**
+ * SDK path normalization, validation and registry-based detection.
+ *
+ * Pure TypeScript (no vscode dependency) so the rules can be unit tested and
+ * reused by the indexer.
+ *
+ * The registry keys mirror what the SDK's own build script
+ * (`defaultscript.cs` initialize()) reads: the uninstall entry's
+ * InstallLocation, first in the 64-bit view and then under Wow6432Node.
+ * The installer path is only a hint - every candidate is validated against
+ * the actual SDK layout before being offered to the user.
+ */
+
+import { execFile } from "node:child_process";
+import { readdirSync, statSync } from "node:fs";
+import { join, resolve } from "node:path";
+
+export type SdkValidationStatus = "ok" | "partial" | "not-sdk" | "missing";
+
+export interface SdkValidation {
+  /** Resolved absolute path, or "" when nothing was configured. */
+  path: string;
+  status: SdkValidationStatus;
+  /** Human-readable relative paths that failed validation. */
+  missing: string[];
+}
+
+/** Uninstall entries queried by the SDK installer (same GUIDs as defaultscript.cs). */
+export const SDK_REGISTRY_KEYS = [
+  "HKEY_LOCAL_MACHINE\\Software\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\{F6A3F605-7B10-4939-8D3D-4594332C1649}",
+  "HKEY_LOCAL_MACHINE\\Software\\Wow6432Node\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\{F6A3F605-7B10-4939-8D3D-4594332C1649}",
+] as const;
+
+/**
+ * The one required marker that identifies an RA3 Mod SDK root. The extension
+ * bundles its own schema model, but this file is the most distinctive SDK
+ * layout item (and is what `npm run generate-model` consumes).
+ */
+const SDK_ROOT_MARKER = ["Schemas", "xsd", "CnC3Types.xsd"] as const;
+
+/**
+ * Functional items used by the extension. Missing ones degrade specific
+ * features (manifests, vanilla sources, SDK-side search paths), so they are
+ * reported as "partial" instead of rejecting the root outright.
+ */
+const SDK_FUNCTIONAL_ITEMS: { rel: readonly string[] }[] = [
+  { rel: ["builtmods"] },
+  { rel: ["SageXml"] },
+  { rel: ["Mods"] },
+  { rel: ["Static.xml"] },
+  { rel: ["Global.xml"] },
+  { rel: ["Audio.xml"] },
+];
+
+/**
+ * Trims quotes/whitespace and resolves to an absolute path. Returns "" for
+ * an empty value so callers can treat it as "no SDK configured".
+ */
+export function normalizeSdkPath(raw: string): string {
+  if (!raw) return "";
+  let p = String(raw).trim();
+  if (
+    p.length >= 2 &&
+    ((p.startsWith('"') && p.endsWith('"')) ||
+      (p.startsWith("'") && p.endsWith("'")))
+  ) {
+    p = p.slice(1, -1).trim();
+  }
+  return p ? resolve(p) : "";
+}
+
+/**
+ * Validates a configured/offered SDK path.
+ *
+ * - `missing`: nothing configured, or the path does not exist.
+ * - `not-sdk`: exists, but lacks the SDK root marker.
+ * - `partial`: is an SDK root, but some extension-relevant items are absent.
+ * - `ok`: every checked item exists.
+ */
+export function validateSdkPath(raw: string): SdkValidation {
+  const path = normalizeSdkPath(raw);
+  if (!path) return { path: "", status: "missing", missing: [] };
+  if (!isDirectory(path)) return { path, status: "missing", missing: [] };
+  if (!hasNestedIgnoreCase(path, SDK_ROOT_MARKER)) {
+    return {
+      path,
+      status: "not-sdk",
+      missing: [SDK_ROOT_MARKER.join("/")],
+    };
+  }
+  const missing: string[] = [];
+  for (const item of SDK_FUNCTIONAL_ITEMS) {
+    if (!hasNestedIgnoreCase(path, item.rel)) {
+      missing.push(item.rel.join("/"));
+    }
+  }
+  return {
+    path,
+    status: missing.length ? "partial" : "ok",
+    missing,
+  };
+}
+
+/**
+ * Reads InstallLocation from one registry key via `reg.exe` (Windows only).
+ * Returns null when the key/value is absent or the query fails.
+ */
+export async function readRegistryValue(
+  key: string,
+  valueName = "InstallLocation",
+  timeoutMs = 3000,
+): Promise<string | null> {
+  if (process.platform !== "win32") return null;
+  try {
+    const stdout = await new Promise<string>((resolveValue, reject) => {
+      execFile(
+        "reg",
+        ["query", key, "/v", valueName],
+        { timeout: timeoutMs, windowsHide: true },
+        (err, stdout, _stderr) => {
+          if (err) reject(err);
+          else resolveValue(stdout);
+        },
+      );
+    });
+    return parseRegistryInstallLocation(stdout);
+  } catch {
+    return null;
+  }
+}
+
+/** Extracts the InstallLocation value from `reg.exe query` output. */
+export function parseRegistryInstallLocation(stdout: string): string | null {
+  for (const line of stdout.split(/\r?\n/)) {
+    const m = line.match(/^\s*InstallLocation\s+REG_[A-Z_]+\s+(.+?)\s*$/i);
+    if (m?.[1]) return m[1].trim();
+  }
+  return null;
+}
+
+/** Queries both registry views in the same order defaultscript.cs uses. */
+export async function detectSdkPathFromRegistry(): Promise<string | null> {
+  for (const key of SDK_REGISTRY_KEYS) {
+    const value = await readRegistryValue(key);
+    if (value?.trim()) return value.trim();
+  }
+  return null;
+}
+
+function isDirectory(path: string): boolean {
+  try {
+    return statSync(path).isDirectory();
+  } catch {
+    return false;
+  }
+}
+
+function readDirNames(dir: string): string[] | null {
+  try {
+    return readdirSync(dir);
+  } catch {
+    return null;
+  }
+}
+
+function hasNestedIgnoreCase(root: string, rel: readonly string[]): boolean {
+  let dir = root;
+  for (let i = 0; i < rel.length - 1; i++) {
+    const names = readDirNames(dir);
+    if (!names) return false;
+    const hit = names.find((n) => n.toLowerCase() === rel[i].toLowerCase());
+    if (!hit) return false;
+    dir = join(dir, hit);
+  }
+  const names = readDirNames(dir);
+  if (!names) return false;
+  const wanted = rel[rel.length - 1].toLowerCase();
+  return names.some((n) => n.toLowerCase() === wanted);
+}

src/sdkSetup.ts

@@ -0,0 +1,193 @@
+import * as vscode from "vscode";
+import type { ModWorkspace } from "./workspace";
+import {
+  detectSdkPathFromRegistry,
+  validateSdkPath,
+  type SdkValidation,
+} from "./sdk";
+import { t } from "./localize";
+
+/**
+ * Non-intrusive SDK path guidance: a status-bar hint plus a one-time prompt
+ * (per session). The prompt prefers a validated registry-detected path, then
+ * falls back to a folder picker. Clearing `ra3modxml.sdkPath` explicitly is
+ * treated as "intentionally disabled" and never re-prompts.
+ */
+export class SdkSetup {
+  private readonly statusBar: vscode.StatusBarItem;
+  private promptAttempted = false;
+
+  constructor(
+    context: vscode.ExtensionContext,
+    private readonly getWs: () => ModWorkspace | null,
+  ) {
+    this.statusBar = vscode.window.createStatusBarItem(
+      vscode.StatusBarAlignment.Left,
+      99,
+    );
+    this.statusBar.name = "RA3 Mod XML SDK";
+    this.statusBar.command = "ra3modxml.configureSdkPath";
+    context.subscriptions.push(this.statusBar);
+    context.subscriptions.push(
+      vscode.commands.registerCommand("ra3modxml.configureSdkPath", () => {
+        const ws = this.getWs();
+        if (!ws) {
+          void vscode.window.showInformationMessage(
+            t("RA3 Mod XML: open an RA3 mod project first to configure the SDK path."),
+          );
+          return;
+        }
+        void this.runSetup();
+      }),
+    );
+  }
+
+  async evaluate(ws: ModWorkspace): Promise<void> {
+    if (!ws.isRa3Workspace()) {
+      this.statusBar.hide();
+      return;
+    }
+    const config = vscode.workspace.getConfiguration("ra3modxml");
+    const raw = config.get<string>("sdkPath", "");
+    const explicit = isExplicitlyConfigured(config);
+    const validation = validateSdkPath(raw);
+
+    if (validation.status === "ok") {
+      this.statusBar.hide();
+      return;
+    }
+    // An explicit empty value means "no SDK, project-only mode" - never nag.
+    if (!raw && explicit) {
+      this.statusBar.hide();
+      return;
+    }
+
+    this.statusBar.text = statusBarText(validation);
+    this.statusBar.tooltip = describeSdkValidation(validation);
+    this.statusBar.show();
+
+    if (!this.promptAttempted) {
+      this.promptAttempted = true;
+      await this.runSetup();
+    }
+  }
+
+  private async runSetup(): Promise<void> {
+    const detected = await detectSdkPathFromRegistry();
+    const detectedValidation = detected ? validateSdkPath(detected) : null;
+    if (
+      detectedValidation &&
+      (detectedValidation.status === "ok" ||
+        detectedValidation.status === "partial")
+    ) {
+      const useDetected = t("Use detected path");
+      const chooseManually = t("Choose manually…");
+      const notNow = t("Not now");
+      const pick = await vscode.window.showWarningMessage(
+        t(
+          "RA3 Mod XML could not find a valid SDK path. Detected installed SDK: {0}",
+          detectedValidation.path,
+        ),
+        useDetected,
+        chooseManually,
+        notNow,
+      );
+      if (pick === useDetected) {
+        await applySdkPath(detectedValidation.path);
+      } else if (pick === chooseManually) {
+        await this.chooseAndApply();
+      }
+      return;
+    }
+
+    const chooseSdkFolder = t("Choose SDK folder…");
+    const pick = await vscode.window.showWarningMessage(
+      t(
+        "RA3 Mod XML needs the RA3 Mod SDK path to enable vanilla data, manifests and cross-file completion/navigation. Without it, the extension runs in project-only mode.",
+      ),
+      chooseSdkFolder,
+      t("Not now"),
+    );
+    if (pick === chooseSdkFolder) await this.chooseAndApply();
+  }
+
+  private async chooseAndApply(): Promise<void> {
+    const picked = await vscode.window.showOpenDialog({
+      canSelectFiles: false,
+      canSelectFolders: true,
+      canSelectMany: false,
+      openLabel: t("Choose SDK root"),
+      title: t(
+        "Choose the RA3 Mod SDK root (should contain Schemas/xsd/CnC3Types.xsd)",
+      ),
+    });
+    const dir = picked?.[0]?.fsPath;
+    if (!dir) return;
+    const validation = validateSdkPath(dir);
+    if (validation.status === "missing" || validation.status === "not-sdk") {
+      void vscode.window.showErrorMessage(
+        t(
+          "The selected directory is not a usable RA3 Mod SDK (missing {0}). Please choose again.",
+          validation.missing.join(", ") || t("that directory"),
+        ),
+      );
+      return;
+    }
+    await applySdkPath(validation.path);
+  }
+}
+
+function statusBarText(validation: SdkValidation): string {
+  if (validation.status === "missing") {
+    return validation.path
+      ? t("$(warning) RA3 XML: SDK path does not exist")
+      : t("$(warning) RA3 XML: SDK not configured");
+  }
+  if (validation.status === "not-sdk") {
+    return t("$(warning) RA3 XML: SDK path is invalid");
+  }
+  return t("$(warning) RA3 XML: SDK is incomplete");
+}
+
+function describeSdkValidation(validation: SdkValidation): string {
+  if (validation.status === "missing") {
+    return validation.path
+      ? t(
+          "The directory configured in ra3modxml.sdkPath does not exist: {0}. Click to reconfigure, or clear ra3modxml.sdkPath to disable vanilla data features.",
+          validation.path,
+        )
+      : t(
+          "RA3 Mod SDK path is not configured. Click to set it, or clear ra3modxml.sdkPath to disable vanilla data features.",
+        );
+  }
+  if (validation.status === "not-sdk") {
+    return t(
+      "The directory configured in ra3modxml.sdkPath is not an RA3 Mod SDK root (missing Schemas/xsd/CnC3Types.xsd). Click to reconfigure.",
+    );
+  }
+  return t(
+    "RA3 Mod SDK is missing: {0}. Manifest / vanilla source / SDK search path features are unavailable.",
+    validation.missing.join(", "),
+  );
+}
+
+function isExplicitlyConfigured(
+  config: vscode.WorkspaceConfiguration,
+): boolean {
+  const info = config.inspect<string>("sdkPath");
+  return !!(
+    info &&
+    (info.globalValue !== undefined ||
+      info.workspaceValue !== undefined ||
+      info.workspaceFolderValue !== undefined)
+  );
+}
+
+async function applySdkPath(path: string): Promise<void> {
+  await vscode.workspace
+    .getConfiguration("ra3modxml")
+    .update("sdkPath", path, vscode.ConfigurationTarget.Global);
+  void vscode.window.showInformationMessage(
+    t("RA3 Mod XML: SDK path set to {0}; rebuilding the index…", path),
+  );
+}

src/settings.ts

@@ -1,5 +1,6 @@
 import * as vscode from "vscode";
 import { join } from "node:path";
+import { normalizeSdkPath } from "./sdk";
 
 export interface ExtensionSettings {
   sdkPath: string;
@@ -13,7 +14,7 @@ export interface ExtensionSettings {
 
 export function readSettings(): ExtensionSettings {
   const cfg = vscode.workspace.getConfiguration("ra3modxml");
-  const sdkPath = cfg.get<string>("sdkPath", "C:\\Apps\\RA3-MODSDK-X");
+  const sdkPath = normalizeSdkPath(cfg.get<string>("sdkPath", ""));
   return {
     sdkPath,
     indexSageXml: cfg.get<boolean>("indexSageXml", true),
@@ -27,6 +28,8 @@ export function readSettings(): ExtensionSettings {
       "all",
     ) as ExtensionSettings["definitionMode"],
     additionalDataSearchPaths: cfg.get<string[]>("additionalDataSearchPaths", []),
-    builtmodsDirs: [join(sdkPath, "builtmods"), join(sdkPath, "builtmods-quantum")],
+    builtmodsDirs: sdkPath
+      ? [join(sdkPath, "builtmods"), join(sdkPath, "builtmods-quantum")]
+      : [],
   };
 }

test/caches.test.mjs

@@ -52,7 +52,7 @@ test("IndexRecordsCache stores and invalidates entries", () => {
   const cache = new IndexRecordsCache();
   const entry = {
     stat,
-    records: { assets: [], defines: [], includes: [], rootXiIncludes: [], nestedXiIncludes: [] },
+    records: { assets: [], defines: [], includes: [], rootXiIncludes: [], nestedXiIncludes: [], references: [] },
     kind: "full",
   };
   cache.set("a.xml", entry);
@@ -65,7 +65,7 @@ test("IndexRecordsCache exposes entries for disk persistence", () => {
   const cache = new IndexRecordsCache();
   const entry = {
     stat,
-    records: { assets: [], defines: [], includes: [], rootXiIncludes: [], nestedXiIncludes: [] },
+    records: { assets: [], defines: [], includes: [], rootXiIncludes: [], nestedXiIncludes: [], references: [] },
     kind: "full",
   };
   cache.set("a.xml", entry);

test/codeLens.test.mjs

@@ -0,0 +1,290 @@
+import { test } from "node:test";
+import assert from "node:assert/strict";
+import { createRequire } from "node:module";
+import { fileURLToPath } from "node:url";
+import { dirname, join, resolve } from "node:path";
+
+// Minimal vscode shim: the CodeLens provider only constructs CodeLens/Range.
+class Range {
+  constructor(start, end) {
+    this.start = start;
+    this.end = end;
+  }
+}
+class CodeLens {
+  constructor(range, command) {
+    this.range = range;
+    this.command = command;
+  }
+}
+class EventEmitter {
+  constructor() {
+    this.listeners = [];
+    this.event = (listener) => {
+      this.listeners.push(listener);
+      return { dispose: () => {} };
+    };
+  }
+  fire() {
+    for (const listener of this.listeners) listener();
+  }
+}
+
+const require = createRequire(import.meta.url);
+const Module = require("module");
+const origResolve = Module._resolveFilename;
+Module._resolveFilename = function (request, ...args) {
+  if (request === "vscode") return "vscode-stub";
+  return origResolve.call(this, request, ...args);
+};
+require.cache["vscode-stub"] = {
+  id: "vscode-stub",
+  filename: "vscode-stub",
+  loaded: true,
+  exports: {
+    Range,
+    CodeLens,
+    EventEmitter,
+  },
+};
+
+const { Ra3CodeLensProvider } = require("../out/features/codeLens.js");
+const { assetDefKey } = require("../out/indexer/referenceIndex.js");
+const { normKey } = require("../out/indexer/caches.js");
+
+const root = dirname(dirname(fileURLToPath(import.meta.url)));
+const PROJECT = join(root, "test", "fixtures", "minimod");
+const SDK = join(root, "test", "fixtures", "fakesdk");
+// A real file whose path matches what DATA:Includes/Units.xml resolves to.
+const FILE = resolve(join(PROJECT, "Data", "Includes", "Units.xml"));
+const TEXT = `<AssetDeclaration>
+  <GameObject id="TestTank"/>
+  <GameObject id="BaseVehicle"/>
+  <CameraSettings id="S"/>
+</AssetDeclaration>`;
+
+function makeDocument(text = TEXT) {
+  const lineStarts = [0];
+  for (let i = 0; i < text.length; i++) {
+    if (text.charCodeAt(i) === 10) lineStarts.push(i + 1);
+  }
+  return {
+    uri: { fsPath: FILE },
+    getText: () => text,
+    positionAt: (offset) => {
+      let lo = 0;
+      let hi = lineStarts.length - 1;
+      while (lo < hi) {
+        const mid = (lo + hi + 1) >> 1;
+        if (lineStarts[mid] <= offset) lo = mid;
+        else hi = mid - 1;
+      }
+      return { line: lo, character: offset - lineStarts[lo] };
+    },
+  };
+}
+
+function makeIndex() {
+  const tankDef = {
+    type: "GameObject",
+    id: "TestTank",
+    file: FILE,
+    line: 2,
+    origin: "project",
+  };
+  const baseDef = {
+    type: "GameObject",
+    id: "BaseVehicle",
+    file: FILE,
+    line: 3,
+    origin: "project",
+  };
+  const tankSite = {
+    file: "C:/mod/Data/Other.xml",
+    line: 7,
+    start: 40,
+    end: 48,
+    kind: "content",
+  };
+  const secondSite = {
+    file: "C:/mod/Data/Third.xml",
+    line: 2,
+    start: 12,
+    end: 20,
+    kind: "attr",
+  };
+  const references = new Map();
+  references.set(
+    assetDefKey(tankDef),
+    [tankSite, secondSite],
+  );
+  references.set(assetDefKey(baseDef), []);
+  return {
+    references,
+    assets: new Map(),
+    assetsById: new Map([
+      ["testtank", [tankDef]],
+      ["basevehicle", [baseDef]],
+    ]),
+    stats: { indexedFiles: 10 },
+    sdkDir: SDK,
+    projectDir: PROJECT,
+  };
+}
+
+test("CodeLens shows counts on reference-target types only, including zero", async () => {
+  const idx = makeIndex();
+  const provider = new Ra3CodeLensProvider({
+    isRa3Workspace: () => true,
+    index: idx,
+    getCodeLensScope: async () => ({ merged: idx }),
+    recordsSyncSurfaceFor: () => ({}),
+    log: () => {},
+  });
+  const lenses = await provider.provideCodeLenses(makeDocument(), {});
+
+  assert.equal(lenses.length, 2, "no lens for auto-registered CameraSettings");
+  const tank = lenses.find((l) => l.command.arguments[0].id === "TestTank");
+  const base = lenses.find((l) => l.command.arguments[0].id === "BaseVehicle");
+
+  assert.ok(tank, "GameObject TestTank gets a lens");
+  assert.equal(tank.command.title, "2 references");
+  assert.equal(tank.command.command, "ra3modxml.showReferences");
+  assert.equal(tank.command.arguments[0].type, "GameObject");
+  assert.equal(tank.command.arguments[0].line, 2);
+
+  assert.ok(base, "zero is still displayed for reference-target types");
+  assert.equal(base.command.title, "0 references");
+
+  // Lenses anchor on the element start tag.
+  assert.equal(tank.range.start.line, 1);
+  assert.ok(tank.range.start.character < tank.range.end.character);
+});
+
+test("CodeLens returns nothing without a workspace or index", async () => {
+  const noWorkspace = new Ra3CodeLensProvider({
+    isRa3Workspace: () => false,
+    index: makeIndex(),
+  });
+  assert.deepEqual(await noWorkspace.provideCodeLenses(makeDocument(), {}), []);
+
+  const noIndex = new Ra3CodeLensProvider({
+    isRa3Workspace: () => true,
+    index: null,
+    getCodeLensScope: async () => ({ merged: null }),
+    recordsSyncSurfaceFor: () => ({}),
+    log: () => {},
+  });
+  assert.deepEqual(await noIndex.provideCodeLenses(makeDocument(), {}), []);
+});
+
+test("CodeLens hides lenses before the first global snapshot", async () => {
+  const localOnly = {
+    complete: false,
+    stats: { indexedFiles: 0 },
+    references: new Map(),
+  };
+  const logs = [];
+  const provider = new Ra3CodeLensProvider({
+    isRa3Workspace: () => true,
+    getCodeLensScope: async () => ({ merged: localOnly }),
+    recordsSyncSurfaceFor: () => ({}),
+    log: (m) => logs.push(m),
+  });
+  assert.deepEqual(await provider.provideCodeLenses(makeDocument(), {}), []);
+  assert.deepEqual(await provider.provideCodeLenses(makeDocument(), {}), []);
+  assert.equal(
+    logs.filter((m) => m.includes("suppressed")).length,
+    1,
+    "suppression is logged once per document",
+  );
+  provider.resetSuppressionLog();
+  await provider.provideCodeLenses(makeDocument(), {});
+  assert.equal(
+    logs.filter((m) => m.includes("suppressed")).length,
+    2,
+    "reset allows re-logging after a new snapshot",
+  );
+});
+
+test("CodeLens refresh fires onDidChangeCodeLenses", () => {
+  const provider = new Ra3CodeLensProvider({
+    isRa3Workspace: () => true,
+    getCodeLensScope: async () => ({ merged: null }),
+    recordsSyncSurfaceFor: () => ({}),
+    log: () => {},
+  });
+  let fired = 0;
+  const subscription = provider.onDidChangeCodeLenses(() => {
+    fired++;
+  });
+  provider.refresh();
+  assert.equal(fired, 1);
+  subscription.dispose();
+});
+
+test("CodeLens counts references attached to a manifest definition with the same SageXml source", async () => {
+  const manifestDef = {
+    type: "GameObject",
+    id: "TestTank",
+    file: resolve(join(SDK, "builtmods", "static.manifest")),
+    line: 0,
+    origin: "manifest",
+    manifestSource: "DATA:Includes/Units.xml",
+  };
+  const site = {
+    file: "C:/mod/Data/Other.xml",
+    line: 7,
+    start: 40,
+    end: 48,
+    kind: "content",
+  };
+  const references = new Map();
+  references.set(assetDefKey(manifestDef), [site]);
+  const idx = {
+    references,
+    assets: new Map([
+      ["GameObject", new Map([["testtank", [manifestDef]]])],
+    ]),
+    assetsById: new Map([["testtank", [manifestDef]]]),
+    stats: { indexedFiles: 10 },
+    sdkDir: SDK,
+    projectDir: PROJECT,
+  };
+  const provider = new Ra3CodeLensProvider({
+    isRa3Workspace: () => true,
+    index: idx,
+    getCodeLensScope: async () => ({ merged: idx }),
+    recordsSyncSurfaceFor: () => ({}),
+    log: () => {},
+  });
+  const lenses = await provider.provideCodeLenses(makeDocument(), {});
+  const tank = lenses.find((l) => l.command.arguments[0].id === "TestTank");
+  assert.ok(tank, "lens is shown for the SageXml-backed definition");
+  assert.equal(tank.command.title, "1 reference");
+});
+
+test("CodeLens schedules a targeted rebuild when the open document desyncs from the snapshot", async () => {
+  const idx = makeIndex();
+  idx.recordsHashes = new Map([[normKey(FILE), "stale-hash"]]);
+  const calls = [];
+  const ws = {
+    isRa3Workspace: () => true,
+    index: idx,
+    invalidate: (p) => calls.push(["invalidate", p]),
+    scheduleRebuild: (r) => calls.push(["schedule", r]),
+    getCodeLensScope: async () => ({ merged: idx }),
+    recordsSyncSurfaceFor: () => ws,
+    log: () => {},
+  };
+  const provider = new Ra3CodeLensProvider(ws);
+  await provider.provideCodeLenses(makeDocument(), {});
+  assert.ok(
+    calls.some(([kind]) => kind === "invalidate"),
+    "the stale file is invalidated",
+  );
+  assert.ok(
+    calls.some(([kind, reason]) => kind === "schedule" && reason === "records-desync"),
+    "a targeted rebuild is scheduled",
+  );
+});

test/completion.test.mjs

@@ -416,6 +416,64 @@ test("whitespace used to trigger the popup is consumed on newline insert", async
   assert.equal(count.range.end.character, pos.character);
 });
 
+test("attribute completion in the middle of a one-per-line start tag does not add a newline", async () => {
+  const text =
+    `<AssetDeclaration>\n` +
+    `  <ObjectCreationList id="OCL_CrateSpawn">\n` +
+    `    <CreateObject\n` +
+    `      Options="IGNORE_ALL_OBJECTS"\n` +
+    `      C\n` +
+    `      Disposition="RANDOM_FORCE RELATIVE_ANGLE">`;
+  const pos = new Position(4, 7);
+
+  const items = await provider.provideCompletionItems(makeDocument(text), pos, token);
+  const count = items.find((i) => i.label === "Count");
+  assert.ok(count);
+  // The attribute is already on its own line; inserting another newline
+  // would leave a blank line. Only the partial name is replaced.
+  assert.equal(count.insertText.value, '      Count="1"');
+  assert.equal(count.range.start.character, 0);
+  assert.equal(count.range.end.character, 7);
+});
+
+test("attribute completion before the first attribute on a new line does not add a newline", async () => {
+  const text =
+    `<AssetDeclaration>\n` +
+    `  <ObjectCreationList id="OCL_CrateSpawn">\n` +
+    `    <CreateObject\n` +
+    `      C\n` +
+    `      Options="IGNORE_ALL_OBJECTS"\n` +
+    `      Disposition="RANDOM_FORCE RELATIVE_ANGLE">`;
+  const pos = new Position(3, 7);
+
+  const items = await provider.provideCompletionItems(makeDocument(text), pos, token);
+  const count = items.find((i) => i.label === "Count");
+  assert.ok(count);
+  assert.equal(count.insertText.value, '      Count="1"');
+  assert.equal(count.range.start.character, 0);
+  assert.equal(count.range.end.character, 7);
+});
+
+test("attribute completion right after the element name still wraps in one-per-line files", async () => {
+  const text =
+    `<AssetDeclaration>\n` +
+    `  <ObjectCreationList id="OCL_CrateSpawn">\n` +
+    `    <CreateObject \n` +
+    `      Options="IGNORE_ALL_OBJECTS"\n` +
+    `      Disposition="RANDOM_FORCE RELATIVE_ANGLE">`;
+  const line3 = text.split("\n")[3];
+  const pos = new Position(3, line3.length);
+
+  const items = await provider.provideCompletionItems(makeDocument(text), pos, token);
+  const count = items.find((i) => i.label === "Count");
+  assert.ok(count);
+  // The new attribute would be the first one on the element-name line, so a
+  // one-per-line file still wraps it onto its own line.
+  assert.equal(count.insertText.value, '\nCount="1"');
+  assert.equal(count.range.start.character, pos.character);
+  assert.equal(count.range.end.character, pos.character);
+});
+
 test("scalar attributes get typed default values, suggestion attributes keep $1", async () => {
   const text =
     `<AssetDeclaration>\n` +
@@ -859,3 +917,61 @@ test("current-file local overlay assets survive the global 400 cap", async () =>
   assert.equal(result.isIncomplete, true);
   assert.ok(result.items.some((i) => i.label === "CrateDebris_01"));
 });
+
+test("asset-id completion shows one entry per id across local/global/manifest definitions", async () => {
+  const projectDef = {
+    type: "WeaponTemplate",
+    id: "AlliedCommandoDesertEaglesWarhead",
+    file: "C:/mod/Data/GlobalData/Weapon/Weapon_Allied.xml",
+    line: 10,
+    origin: "project",
+  };
+  const unsavedLocalDef = {
+    type: "WeaponTemplate",
+    id: "AlliedCommandoDesertEaglesWarhead",
+    file: "C:/mod/Data/GlobalData/Weapon/Weapon_Allied.xml",
+    line: 14,
+    origin: "project",
+    stream: "local",
+  };
+  const manifestDef = {
+    type: "WeaponTemplate",
+    id: "AlliedCommandoDesertEaglesWarhead",
+    file: "C:/sdk/builtmods/static.manifest",
+    line: 0,
+    origin: "manifest",
+    manifestSource: "DATA:static.xml",
+  };
+  const idKey = "alliedcommandodeserteagleswarhead";
+  const idx = {
+    assets: new Map([
+      ["WeaponTemplate", new Map([[idKey, [projectDef, manifestDef]]])],
+    ]),
+    assetsById: new Map([[idKey, [projectDef, manifestDef]]]),
+    local: {
+      assets: new Map([["WeaponTemplate", new Map([[idKey, [unsavedLocalDef]]])]]),
+      assetsById: new Map([[idKey, [unsavedLocalDef]]]),
+      defines: new Map(),
+    },
+  };
+  const text =
+    `<AssetDeclaration>\n` +
+    `  <ProjectileNugget WarheadTemplate="A">\n` +
+    `  </ProjectileNugget>\n` +
+    `</AssetDeclaration>`;
+  const line = text.split("\n")[1];
+  const pos = new Position(1, line.indexOf('"A') + 2);
+
+  const result = await makeProvider(idx).provideCompletionItems(
+    makeDocument(text),
+    pos,
+    token,
+  );
+  const items = listItems(result);
+  const matches = items.filter((i) => i.label === "AlliedCommandoDesertEaglesWarhead");
+  assert.equal(matches.length, 1, "same id from local/global/manifest is offered once");
+  assert.ok(
+    matches[0].documentation.value.includes("Also defined"),
+    "additional definitions are listed in the item documentation",
+  );
+});

test/contentFeatures.test.mjs

@@ -1,6 +1,9 @@
 import { test } from "node:test";
 import assert from "node:assert/strict";
 import { createRequire } from "node:module";
+import { mkdirSync, mkdtempSync, rmSync, writeFileSync } from "node:fs";
+import { dirname, join } from "node:path";
+import { tmpdir } from "node:os";
 
 // Minimal vscode shim for hover / definition / diagnostics providers.
 const CompletionItemKind = {};
@@ -37,7 +40,7 @@ class Hover {
 class Location {
   constructor(uri, range) {
     this.uri = uri;
-    this.range = range;
+    this.range = range instanceof Position ? new Range(range, range) : range;
   }
 }
 class Diagnostic {
@@ -236,6 +239,176 @@ test("Ctrl+click on simple-content text jumps to the definition", async () => {
   );
 });
 
+test("Ctrl+click on a manifest definition maps to SageXml even when the mod shadows the DATA path", async () => {
+  const tmp = mkdtempSync(join(tmpdir(), "ra3-nav-manifest-"));
+  try {
+    const sdkDir = join(tmp, "sdk");
+    const projectDir = join(tmp, "project");
+    const sageFile = join(sdkDir, "SageXml", "globaldata", "weapon.xml");
+    const modFile = join(projectDir, "Data", "globaldata", "weapon.xml");
+    mkdirSync(dirname(sageFile), { recursive: true });
+    mkdirSync(dirname(modFile), { recursive: true });
+    writeFileSync(
+      sageFile,
+      '<AssetDeclaration xmlns="uri:ea.com:eala:asset"><GameObject id="AlliedCommandoDesertEagles"/></AssetDeclaration>',
+      "utf8",
+    );
+    writeFileSync(
+      modFile,
+      '<AssetDeclaration xmlns="uri:ea.com:eala:asset"><GameObject id="ModOnly"/></AssetDeclaration>',
+      "utf8",
+    );
+
+    const manifestDef = {
+      type: "GameObject",
+      id: "AlliedCommandoDesertEagles",
+      file: join(sdkDir, "builtmods", "static.manifest"),
+      line: 0,
+      origin: "manifest",
+      manifestSource: "DATA:globaldata/weapon.xml",
+    };
+    const idx = makeIdx([manifestDef]);
+    idx.projectDir = projectDir;
+    idx.sdkDir = sdkDir;
+    const text =
+      '<AssetDeclaration xmlns="uri:ea.com:eala:asset">\n' +
+      '  <GameObject id="MyUnit" inheritFrom="AlliedCommandoDesertEagles"/>\n' +
+      "</AssetDeclaration>";
+    const scope = await makeScope(text, idx);
+    const provider = new Ra3DefinitionProvider({
+      isRa3Workspace: () => true,
+      getScope: async () => scope,
+      settings: { definitionMode: "all" },
+      indexer: { readDom: async () => null },
+    });
+
+    const line = text.split("\n")[1];
+    const pos = new Position(
+      1,
+      line.indexOf("AlliedCommandoDesertEagles") + 3,
+    );
+    const locations = await provider.provideDefinition(makeDocument(text), pos, {});
+    assert.ok(locations && locations.length === 1, "manifest definition resolves");
+    assert.equal(
+      locations[0].uri.fsPath,
+      sageFile,
+      "manifest source must resolve to SageXml, not the mod shadow file",
+    );
+  } finally {
+    rmSync(tmp, { recursive: true, force: true });
+  }
+});
+
+test("manifest definition stays manifest-only when the SageXml source is missing", async () => {
+  const tmp = mkdtempSync(join(tmpdir(), "ra3-nav-manifest-missing-"));
+  try {
+    const sdkDir = join(tmp, "sdk");
+    const projectDir = join(tmp, "project");
+    const modFile = join(projectDir, "Data", "globaldata", "weapon.xml");
+    mkdirSync(dirname(modFile), { recursive: true });
+    writeFileSync(
+      modFile,
+      '<AssetDeclaration xmlns="uri:ea.com:eala:asset"><GameObject id="AlliedCommandoDesertEagles"/></AssetDeclaration>',
+      "utf8",
+    );
+
+    const manifestDef = {
+      type: "GameObject",
+      id: "AlliedCommandoDesertEagles",
+      file: join(sdkDir, "builtmods", "static.manifest"),
+      line: 0,
+      origin: "manifest",
+      manifestSource: "DATA:globaldata/weapon.xml",
+    };
+    const idx = makeIdx([manifestDef]);
+    idx.projectDir = projectDir;
+    idx.sdkDir = sdkDir;
+    const text =
+      '<AssetDeclaration xmlns="uri:ea.com:eala:asset">\n' +
+      '  <GameObject id="MyUnit" inheritFrom="AlliedCommandoDesertEagles"/>\n' +
+      "</AssetDeclaration>";
+    const scope = await makeScope(text, idx);
+    const provider = new Ra3DefinitionProvider({
+      isRa3Workspace: () => true,
+      getScope: async () => scope,
+      settings: { definitionMode: "all" },
+      indexer: { readDom: async () => null },
+    });
+
+    const line = text.split("\n")[1];
+    const pos = new Position(
+      1,
+      line.indexOf("AlliedCommandoDesertEagles") + 3,
+    );
+    const locations = await provider.provideDefinition(makeDocument(text), pos, {});
+    assert.equal(
+      locations,
+      null,
+      "missing vanilla source must not fall back to the mod shadow file",
+    );
+  } finally {
+    rmSync(tmp, { recursive: true, force: true });
+  }
+});
+
+test("manifest definition opens the SageXml file at the top when the id is no longer there", async () => {
+  const tmp = mkdtempSync(join(tmpdir(), "ra3-nav-manifest-stale-"));
+  try {
+    const sdkDir = join(tmp, "sdk");
+    const projectDir = join(tmp, "project");
+    const sageFile = join(sdkDir, "SageXml", "globaldata", "weapon.xml");
+    const modFile = join(projectDir, "Data", "globaldata", "weapon.xml");
+    mkdirSync(dirname(sageFile), { recursive: true });
+    mkdirSync(dirname(modFile), { recursive: true });
+    writeFileSync(
+      sageFile,
+      '<AssetDeclaration xmlns="uri:ea.com:eala:asset"/>',
+      "utf8",
+    );
+    writeFileSync(
+      modFile,
+      '<AssetDeclaration xmlns="uri:ea.com:eala:asset"><GameObject id="AlliedCommandoDesertEagles"/></AssetDeclaration>',
+      "utf8",
+    );
+
+    const manifestDef = {
+      type: "GameObject",
+      id: "AlliedCommandoDesertEagles",
+      file: join(sdkDir, "builtmods", "static.manifest"),
+      line: 0,
+      origin: "manifest",
+      manifestSource: "DATA:globaldata/weapon.xml",
+    };
+    const idx = makeIdx([manifestDef]);
+    idx.projectDir = projectDir;
+    idx.sdkDir = sdkDir;
+    const text =
+      '<AssetDeclaration xmlns="uri:ea.com:eala:asset">\n' +
+      '  <GameObject id="MyUnit" inheritFrom="AlliedCommandoDesertEagles"/>\n' +
+      "</AssetDeclaration>";
+    const scope = await makeScope(text, idx);
+    const provider = new Ra3DefinitionProvider({
+      isRa3Workspace: () => true,
+      getScope: async () => scope,
+      settings: { definitionMode: "all" },
+      indexer: { readDom: async () => null },
+    });
+
+    const line = text.split("\n")[1];
+    const pos = new Position(
+      1,
+      line.indexOf("AlliedCommandoDesertEagles") + 3,
+    );
+    const locations = await provider.provideDefinition(makeDocument(text), pos, {});
+    assert.ok(locations && locations.length === 1);
+    assert.equal(locations[0].uri.fsPath, sageFile);
+    assert.equal(locations[0].range.start.line, 0);
+    assert.equal(locations[0].range.start.character, 0);
+  } finally {
+    rmSync(tmp, { recursive: true, force: true });
+  }
+});
+
 test("diagnostics report unresolved typed content references only", async () => {
   const text =
     `<AssetDeclaration>\n` +
@@ -279,3 +452,89 @@ test("diagnostics report unresolved typed content references only", async () =>
     "untyped WeakReference content is not diagnosed as a global ref",
   );
 });
+
+test("fragment diagnostics skip document-level checks but keep subtree validation", async () => {
+  const text =
+    `<CreateObjectDie xmlns="uri:ea.com:eala:asset" id="ModuleTag_X" CreationList="OCL_X">\n` +
+    `  <DieMuxData DeathTypo="SUICIDED"/>\n` +
+    `</CreateObjectDie>`;
+  const scope = await makeScope(text, makeIdx([]));
+  const collection = new FakeDiagnosticCollection();
+  const provider = new Ra3Diagnostics({
+    isRa3Workspace: () => true,
+    getScope: async () => scope,
+    settings: {
+      diagnoseUnknownElements: true,
+      reportUnresolvedReferences: "warning",
+    },
+  });
+  provider["collection"] = collection;
+  await provider.update(makeDocument(text));
+  const codes = collection.last.diags.map((d) => d.code);
+  assert.ok(
+    !codes.includes("missing-id"),
+    "fragment children are not treated as top-level assets",
+  );
+  assert.ok(
+    !codes.some((c) => c.startsWith("unresolved-reference")),
+    "fragment references are deferred to the includer context",
+  );
+  assert.ok(
+    codes.includes("unknown-attribute"),
+    "a known fragment root still validates its subtree attributes",
+  );
+});
+
+test("fragment diagnostics ignore unknown wrapper roots and still report missing xi:include", async () => {
+  const text =
+    `<CommonArmorDraws xmlns="uri:ea.com:eala:asset" xmlns:xi="http://www.w3.org/2001/XInclude">\n` +
+    `  <ScriptedModelDraw id="M" Bogus="x"/>\n` +
+    `  <xi:include href="MissingTarget.xml"/>\n` +
+    `</CommonArmorDraws>`;
+  const scope = await makeScope(text, makeIdx([]));
+  const collection = new FakeDiagnosticCollection();
+  const provider = new Ra3Diagnostics({
+    isRa3Workspace: () => true,
+    getScope: async () => scope,
+    settings: {
+      diagnoseUnknownElements: true,
+      reportUnresolvedReferences: "warning",
+    },
+  });
+  provider["collection"] = collection;
+  await provider.update(makeDocument(text));
+  const codes = collection.last.diags.map((d) => d.code);
+  assert.ok(
+    !codes.includes("unknown-element"),
+    "wrapper roots are not validated as standalone documents",
+  );
+  assert.ok(
+    !codes.includes("unknown-attribute"),
+    "unknown wrapper roots do not trigger subtree attribute guessing",
+  );
+  assert.ok(
+    codes.includes("include-not-found"),
+    "missing xi:include targets inside fragments are still reported",
+  );
+});
+
+test("full documents still require ids on top-level assets", async () => {
+  const text = `<AssetDeclaration>\n  <GameObject/>\n</AssetDeclaration>`;
+  const scope = await makeScope(text, makeIdx([]));
+  const collection = new FakeDiagnosticCollection();
+  const provider = new Ra3Diagnostics({
+    isRa3Workspace: () => true,
+    getScope: async () => scope,
+    settings: {
+      diagnoseUnknownElements: true,
+      reportUnresolvedReferences: "warning",
+    },
+  });
+  provider["collection"] = collection;
+  await provider.update(makeDocument(text));
+  const codes = collection.last.diags.map((d) => d.code);
+  assert.ok(
+    codes.includes("missing-id"),
+    "AssetDeclaration documents keep top-level id checks",
+  );
+});

test/diskCache.test.mjs

@@ -19,6 +19,7 @@ const sampleRecords = {
   includes: [{ type: "all", source: "Units.xml", line: 4 }],
   rootXiIncludes: [],
   nestedXiIncludes: [],
+  references: [],
 };
 
 function stampOf(file) {
@@ -47,7 +48,12 @@ test("disk cache roundtrip keeps records and leaves no temp file", async (t) =>
   await cache.save([
     [
       file.toLowerCase(),
-      { stat: stampOf(file), records: sampleRecords, kind: "full" },
+      {
+        stat: stampOf(file),
+        records: sampleRecords,
+        kind: "full",
+        contentHash: "abc123",
+      },
     ],
   ]);
   assert.equal(fs.existsSync(`${filePath}.tmp`), false, "atomic write leaves no temp");
@@ -60,6 +66,7 @@ test("disk cache roundtrip keeps records and leaves no temp file", async (t) =>
   assert.equal(stats.dropped, 0);
   assert.equal(records.length, 1);
   assert.deepEqual(records[0].records, sampleRecords);
+  assert.equal(records[0].contentHash, "abc123");
 });
 
 test("stat mismatch drops the cached entry", async (t) => {
@@ -130,3 +137,56 @@ test("diskCacheKey differs when the identity changes", () => {
   assert.notEqual(a, b);
   assert.equal(a, diskCacheKey(identity));
 });
+
+test("load returns records without stat validation", async (t) => {
+  const tmp = makeTmp(t);
+  const file = join(tmp, "a.xml");
+  fs.writeFileSync(file, "0123456789");
+  const filePath = join(tmp, "index-records.json.gz");
+  const cache = new DiskRecordsCache(filePath, identity);
+  await cache.save([
+    [
+      file.toLowerCase(),
+      { stat: stampOf(file), records: sampleRecords, kind: "full" },
+    ],
+  ]);
+
+  const { records, stats } = await cache.load();
+  assert.equal(records.length, 1);
+  assert.equal(stats.fileExists, true);
+  assert.equal(stats.keyMatched, true);
+  assert.equal(stats.loaded, 1);
+  assert.equal(stats.validated, 0);
+  assert.equal(stats.dropped, 0);
+  assert.ok(stats.loadMs >= 0);
+});
+
+test("validate reports changed/missing entries and keeps valid ones", async (t) => {
+  const tmp = makeTmp(t);
+  const a = join(tmp, "a.xml");
+  const b = join(tmp, "b.xml");
+  fs.writeFileSync(a, "0123456789");
+  fs.writeFileSync(b, "0123456789");
+  const filePath = join(tmp, "index-records.json.gz");
+  const cache = new DiskRecordsCache(filePath, identity);
+  await cache.save([
+    [a.toLowerCase(), { stat: stampOf(a), records: sampleRecords, kind: "full" }],
+    [b.toLowerCase(), { stat: stampOf(b), records: sampleRecords, kind: "full" }],
+  ]);
+
+  const { records } = await cache.load();
+  const past = new Date(Date.now() - 60000);
+  fs.utimesSync(b, past, past);
+  const progress = [];
+  const { stats, kept, invalidKeys } = await cache.validate(records, (done, total) => {
+    progress.push([done, total]);
+  });
+  assert.equal(stats.validated, 1);
+  assert.equal(stats.dropped, 1);
+  assert.equal(kept.length, 1);
+  assert.equal(kept[0].key, a.toLowerCase());
+  assert.deepEqual(invalidKeys, [b.toLowerCase()]);
+  assert.ok(stats.validateMs >= 0);
+  assert.deepEqual(progress[progress.length - 1], [1, 2]);
+  assert.ok(progress.every(([done], i) => i === 0 || done >= progress[i - 1][0]));
+});

test/fixtures/fakesdk/Mods/.gitkeep

@@ -0,0 +1 @@
+

test/fixtures/fakesdk/Schemas/xsd/CnC3Types.xsd

@@ -0,0 +1,2 @@
+<?xml version="1.0" encoding="utf-8"?>
+<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" />

test/includeResolver.test.mjs

@@ -2,8 +2,11 @@ import { test } from "node:test";
 import assert from "node:assert/strict";
 import { fileURLToPath } from "node:url";
 import { dirname, join } from "node:path";
+import { mkdirSync, mkdtempSync, rmSync, writeFileSync } from "node:fs";
+import { tmpdir } from "node:os";
 import {
   buildSearchPaths,
+  buildVanillaSearchPaths,
   resolveSource,
   manifestPathForReference,
 } from "../out/indexer/includeResolver.js";
@@ -81,6 +84,94 @@ test("DATA:Static.xml prefers the SDK root over SageXml", () => {
   assert.equal(r.path, join(sdk, "Static.xml"));
 });
 
+test("vanilla search paths stay inside the SDK", () => {
+  const vanilla = buildVanillaSearchPaths(sdk);
+  assert.deepEqual(vanilla.DATA, [sdk, join(sdk, "SageXml")]);
+  assert.deepEqual(vanilla.ART, [sdk, join(sdk, "Art")]);
+  assert.deepEqual(vanilla.AUDIO, [sdk, join(sdk, "Audio")]);
+});
+
+test("empty SDK path produces project-only search paths", () => {
+  const modParent = dirname(project);
+  const granParent = dirname(modParent);
+  const paths = buildSearchPaths("", project);
+  assert.deepEqual(paths.DATA, [
+    granParent,
+    join(project, "Data"),
+    modParent,
+  ]);
+  assert.deepEqual(paths.ART, [
+    granParent,
+    join(project, "Art1"),
+    join(project, "Art"),
+    modParent,
+  ]);
+  assert.deepEqual(paths.AUDIO, [
+    granParent,
+    join(project, "Audio1"),
+    join(project, "Audio"),
+    modParent,
+  ]);
+  const r = resolveSource("DATA:static.xml", null, paths);
+  assert.equal(r.path, null, "DATA: include never falls back to the cwd");
+
+  const vanilla = buildVanillaSearchPaths("");
+  assert.deepEqual(vanilla.DATA, []);
+  assert.deepEqual(vanilla.ART, []);
+  assert.deepEqual(vanilla.AUDIO, []);
+});
+
+test("manifest sources resolve with vanilla-only paths (mod shadow ignored)", () => {
+  const tmp = mkdtempSync(join(tmpdir(), "ra3-vanilla-"));
+  try {
+    const sdkDir = join(tmp, "sdk");
+    const projectDir = join(tmp, "project");
+    const rel = "globaldata/weapon.xml";
+    const sageFile = join(sdkDir, "SageXml", rel);
+    const modFile = join(projectDir, "Data", rel);
+    mkdirSync(dirname(sageFile), { recursive: true });
+    mkdirSync(dirname(modFile), { recursive: true });
+    writeFileSync(sageFile, "<AssetDeclaration/>", "utf8");
+    writeFileSync(modFile, "<AssetDeclaration/>", "utf8");
+
+    const normal = resolveSource(
+      "DATA:globaldata/weapon.xml",
+      null,
+      buildSearchPaths(sdkDir, projectDir),
+    );
+    const vanilla = resolveSource(
+      "DATA:globaldata/weapon.xml",
+      null,
+      buildVanillaSearchPaths(sdkDir),
+    );
+
+    assert.equal(normal.path, modFile, "normal BAB order picks the mod file");
+    assert.equal(vanilla.path, sageFile, "manifest source stays on SageXml");
+  } finally {
+    rmSync(tmp, { recursive: true, force: true });
+  }
+});
+
+test("missing vanilla source returns null even when the project shadows the path", () => {
+  const tmp = mkdtempSync(join(tmpdir(), "ra3-vanilla-missing-"));
+  try {
+    const sdkDir = join(tmp, "sdk");
+    const projectDir = join(tmp, "project");
+    const modFile = join(projectDir, "Data", "globaldata", "weapon.xml");
+    mkdirSync(dirname(modFile), { recursive: true });
+    writeFileSync(modFile, "<AssetDeclaration/>", "utf8");
+
+    const vanilla = resolveSource(
+      "DATA:globaldata/weapon.xml",
+      null,
+      buildVanillaSearchPaths(sdkDir),
+    );
+    assert.equal(vanilla.path, null);
+  } finally {
+    rmSync(tmp, { recursive: true, force: true });
+  }
+});
+
 test("manifest mapping strips the prefix", () => {
   const dirs = [join(sdk, "builtmods")];
   assert.equal(manifestPathForReference("DATA:static.xml", dirs), join(dirs[0], "static.manifest"));

test/indexer.test.mjs

@@ -12,6 +12,7 @@ import {
   IndexRecordsCache,
 } from "../out/indexer/caches.js";
 import { resolveReferenceTargetsForType } from "../out/indexer/refs.js";
+import { assetDefKey } from "../out/indexer/referenceIndex.js";
 
 const root = dirname(dirname(fileURLToPath(import.meta.url)));
 const project = join(root, "test", "fixtures", "minimod");
@@ -29,6 +30,75 @@ async function buildIndex() {
   return indexer.build();
 }
 
+function u32(value) {
+  const b = Buffer.alloc(4);
+  b.writeUInt32LE(value >>> 0);
+  return b;
+}
+
+function u16(value) {
+  const b = Buffer.alloc(2);
+  b.writeUInt16LE(value >>> 0);
+  return b;
+}
+
+/** Minimal version-5 manifest with one asset entry per supplied descriptor. */
+function minimalManifestV5(assets) {
+  const nameParts = [];
+  const sourceParts = [];
+  let nameOffset = 0;
+  let sourceOffset = 0;
+  const entries = assets.map((asset) => {
+    const name = Buffer.from(`${asset.name}\0`, "ascii");
+    const source = Buffer.from(`${asset.source ?? ""}\0`, "ascii");
+    const entry = {
+      typeId: asset.typeId,
+      nameOffset,
+      sourceFileNameOffset: sourceOffset,
+    };
+    nameParts.push(name);
+    sourceParts.push(source);
+    nameOffset += name.length;
+    sourceOffset += source.length;
+    return entry;
+  });
+  const names = Buffer.concat(nameParts);
+  const sources = Buffer.concat(sourceParts);
+
+  const parts = [
+    Buffer.from([0, 1]), // isBigEndian=false, isLinked=true
+    u16(5), // version
+    u32(0), // streamChecksum
+    u32(0), // allTypesHash
+    u32(assets.length), // assetCount
+    u32(0), // totalInstanceDataSize
+    u32(0), // maxInstanceChunkSize
+    u32(0), // maxRelocationChunkSize
+    u32(0), // maxImportsChunkSize
+    u32(0), // assetReferenceBufferSize
+    u32(0), // referencedManifestNameBufferSize
+    u32(names.length), // assetNameBufferSize
+    u32(sources.length), // sourceFileNameBufferSize
+  ];
+  for (const entry of entries) {
+    parts.push(
+      u32(entry.typeId),
+      u32(0), // instanceId
+      u32(0), // typeHash
+      u32(0), // instanceHash
+      u32(0), // assetReferenceOffset
+      u32(0), // assetReferenceCount
+      u32(entry.nameOffset),
+      u32(entry.sourceFileNameOffset),
+      u32(0), // instanceDataSize
+      u32(0), // relocationDataSize
+      u32(0), // importsDataSize
+    );
+  }
+  parts.push(names, sources);
+  return Buffer.concat(parts);
+}
+
 test("indexes assets, defines, streams and include errors", async () => {
   const idx = await buildIndex();
 
@@ -133,6 +203,102 @@ test("w3x files appear in Include source completion candidates", async () => {
   );
 });
 
+test("manifest assets sharing an id keep every type in assetsById", async () => {
+  const tmp = fs.mkdtempSync(join(os.tmpdir(), "ra3-manifest-multitype-"));
+  const projectDir = join(tmp, "project");
+  const sdkDir = join(tmp, "sdk");
+  const builtmodsDir = join(sdkDir, "builtmods");
+  fs.mkdirSync(join(projectDir, "Data"), { recursive: true });
+  fs.mkdirSync(builtmodsDir, { recursive: true });
+  fs.writeFileSync(join(sdkDir, "Static.xml"), "<AssetDeclaration/>");
+  fs.writeFileSync(
+    join(projectDir, "Data", "Mod.xml"),
+    `<?xml version="1.0" encoding="utf-8"?>
+<AssetDeclaration xmlns="uri:ea.com:eala:asset">
+  <Includes>
+    <Include type="reference" source="DATA:static.xml" />
+  </Includes>
+  <GameObject id="AlliedMCV">
+    <Draws>
+      <ScriptedModelDraw id="ModuleTag_Draw_Hover">
+        <ModelConditionState ParseCondStateType="PARSE_DEFAULT">
+          <Model Name="AUMCV_Hover" />
+        </ModelConditionState>
+      </ScriptedModelDraw>
+    </Draws>
+  </GameObject>
+</AssetDeclaration>`,
+  );
+  fs.writeFileSync(
+    join(builtmodsDir, "static.manifest"),
+    minimalManifestV5([
+      {
+        typeId: 0x11111111,
+        name: "W3DHierarchy:AUMCV_HOVER",
+        source: "ART:aumcv_hover.w3x",
+      },
+      {
+        typeId: 0x22222222,
+        name: "W3DAnimation:AUMCV_HOVER",
+        source: "ART:aumcv_hover.w3x",
+      },
+      {
+        typeId: 0x33333333,
+        name: "W3DContainer:AUMCV_HOVER",
+        source: "ART:aumcv_hover.w3x",
+      },
+      {
+        typeId: 0x44444444,
+        name: "Texture:ABAirfield",
+        source: "ART:abairfield.tga",
+      },
+      {
+        typeId: 0x55555555,
+        name: "W3DContainer:ABAIRFIELD",
+        source: "ART:abairfield.w3x",
+      },
+    ]),
+  );
+
+  const indexer = new ModIndexer({
+    projectDir,
+    sdkDir,
+    builtmodsDirs: [builtmodsDir],
+    indexSageXml: false,
+    additionalDataSearchPaths: [],
+    walker: new CachedDirectoryWalker(),
+  });
+  const idx = await indexer.build();
+
+  // The reported AUMCV_HOVER shape: Hierarchy/Animation precede the
+  // W3DContainer, so the by-id index must not drop the render asset.
+  const hover = idx.assetsById.get("aumcv_hover");
+  assert.ok(hover?.some((d) => d.type === "W3DContainer"), "W3DContainer retained");
+  assert.ok(hover?.some((d) => d.type === "W3DHierarchy"), "W3DHierarchy retained");
+  assert.ok(hover?.some((d) => d.type === "W3DAnimation"), "W3DAnimation retained");
+
+  const targets = resolveReferenceTargetsForType(
+    idx,
+    "ScriptedModelDrawModel",
+    "Name",
+    "AUMCV_Hover",
+  );
+  assert.equal(targets.length, 1);
+  assert.equal(targets[0].def.type, "W3DContainer");
+
+  const container = hover.find((d) => d.type === "W3DContainer");
+  const sites = idx.references.get(assetDefKey(container));
+  assert.ok(
+    sites?.some((s) => s.kind === "attr" && /Mod\.xml$/.test(s.file)),
+    "Model reference is attributed to the W3DContainer definition",
+  );
+
+  // Common Texture-first shape must also keep the render definition.
+  const airfield = idx.assetsById.get("abairfield");
+  assert.ok(airfield?.some((d) => d.type === "Texture"), "Texture retained");
+  assert.ok(airfield?.some((d) => d.type === "W3DContainer"), "W3DContainer retained");
+});
+
 test("build publishes an immutable XML phase before art scanning", async () => {
   let phaseA;
   const indexer = new ModIndexer({
@@ -315,6 +481,47 @@ test("trusted rebuilds skip unchanged files; invalidation forces re-reads", asyn
   assert.equal(forced.stats.shallowCacheHits, 2);
 });
 
+test("unvalidated shallow entries are deferred in phase A and stat-verified before phase B", async () => {
+  const documentCache = new DocumentCache();
+  const recordsCache = new IndexRecordsCache();
+  const resolveCache = new IncludeResolveCache();
+  const opts = () => ({
+    projectDir: project,
+    sdkDir: sdk,
+    builtmodsDirs: [join(sdk, "builtmods")],
+    indexSageXml: true,
+    additionalDataSearchPaths: [],
+    walker: new CachedDirectoryWalker(),
+    documentCache,
+    recordsCache,
+    resolveCache,
+    trustUnchanged: true,
+  });
+
+  const first = await new ModIndexer(opts()).build();
+  // Simulate the workspace pre-seeding a disk cache: shallow records are
+  // present but not stat-validated yet.
+  for (const [, entry] of recordsCache.entries()) {
+    if (entry.kind === "shallow") entry.validated = false;
+  }
+
+  let phaseA = null;
+  const second = await new ModIndexer(opts()).build((p) => {
+    phaseA = p;
+  });
+  assert.equal(phaseA.stats.deferredArtFiles, 2, "art files registered, not consumed, in phase A");
+  assert.equal(
+    phaseA.assetsById.has("tank_skn"),
+    false,
+    "art assets are deferred until phase B",
+  );
+  assert.equal(second.stats.shallowScannedFiles, 0, "validated records are not re-scanned");
+  assert.ok(
+    second.assetsById.get("tank_skn")?.some((d) => d.type === "W3DContainer"),
+    "art asset present after phase B",
+  );
+});
+
 test("index stats include candidate/walk phase timings", async () => {
   const idx = await buildIndex();
   assert.equal(typeof idx.stats.candidatesMs, "number");
@@ -360,3 +567,43 @@ test("w3x with a UTF-8 BOM is indexed with correct offsets", async (t) => {
   assert.ok(def, "BOM-prefixed w3x asset indexed");
   assert.equal(def.line, 3, "id line is correct despite the BOM");
 });
+
+test("indexes the project without an SDK path (project-only mode)", async () => {
+  const idx = await new ModIndexer({
+    projectDir: project,
+    sdkDir: "",
+    builtmodsDirs: [],
+    indexSageXml: true,
+    additionalDataSearchPaths: [],
+    walker: new CachedDirectoryWalker(),
+  }).build();
+
+  assert.ok(idx.complete, "build completes without an SDK");
+  assert.ok(idx.assetsById.has("testtank"), "project assets are still indexed");
+  assert.equal(
+    idx.diagnostics.some(
+      (d) => d.code === "include-not-found" && /DATA:/.test(d.message),
+    ),
+    false,
+    "SDK-only include misses are suppressed in project-only mode",
+  );
+  assert.ok(
+    idx.diagnostics.some((d) => d.code === "sdk-not-configured"),
+    "one summary SDK diagnostic is reported",
+  );
+});
+
+test("missing SDK path does not abort the build", async () => {
+  const missing = join(os.tmpdir(), "ra3modxml-no-such-sdk");
+  const idx = await new ModIndexer({
+    projectDir: project,
+    sdkDir: missing,
+    builtmodsDirs: [],
+    indexSageXml: true,
+    additionalDataSearchPaths: [],
+    walker: new CachedDirectoryWalker(),
+  }).build();
+
+  assert.ok(idx.complete);
+  assert.ok(idx.assetsById.has("testtank"));
+});

test/localScope.test.mjs

@@ -31,7 +31,7 @@ async function readParsed(path) {
   return {
     file: { path, stat: null },
     parse,
-    records: extractIndexRecords(parse, lineMap),
+    records: extractIndexRecords(parse, lineMap, text),
     lineMap,
   };
 }
@@ -99,6 +99,54 @@ test("logical xi:include expansion gives included modules their Draws context",
   assert.ok(localIds.includes("ModuleTag_Headlight"));
 });
 
+test("xi:include without xpointer splices the target root element itself", async (t) => {
+  const tmp = await mkdtemp(join(tmpdir(), "ra3-local-noxpointer-"));
+  t.after(() => rm(tmp, { recursive: true, force: true }));
+  const dataDir = join(tmp, "Data");
+  const includesDir = join(dataDir, "Includes");
+  await mkdir(includesDir, { recursive: true });
+  const mainPath = join(dataDir, "Main.xml");
+  const fragmentPath = join(includesDir, "Fragment.xml");
+  await writeFile(
+    fragmentPath,
+    '<CreateObjectDie xmlns="uri:ea.com:eala:asset" id="ModuleTag_X" CreationList="OCL_X"><DieMuxData DeathTypes="SUICIDED"/></CreateObjectDie>',
+    "utf8",
+  );
+  await writeFile(
+    mainPath,
+    '<AssetDeclaration xmlns="uri:ea.com:eala:asset" xmlns:xi="http://www.w3.org/2001/XInclude">' +
+      '<GameObject id="G"><Behaviors><xi:include href="DATA:Includes/Fragment.xml"/></Behaviors></GameObject>' +
+      "</AssetDeclaration>",
+    "utf8",
+  );
+  const searchPaths = buildSearchPaths(sdk, tmp);
+  const text = await readFile(mainPath, "utf8");
+  const scope = await buildDocumentScope(mainPath, text, 1, {
+    projectDir: tmp,
+    sdkDir: sdk,
+    searchPaths,
+    readRecords: readParsed,
+    readDom: readParsed,
+  });
+  const behaviors = scope.expanded.elements.find((e) => e.name === "Behaviors");
+  assert.ok(behaviors, "Behaviors exists");
+  assert.equal(behaviors.children.length, 1);
+  const module = behaviors.children[0];
+  assert.equal(module.name, "CreateObjectDie");
+  assert.equal(
+    module.attrs.find((a) => a.name === "id")?.value,
+    "ModuleTag_X",
+  );
+  assert.match(module.sourceFile, /Fragment\.xml$/i);
+  const dieMux = scope.expanded.elements.find((e) => e.name === "DieMuxData");
+  assert.ok(dieMux, "DieMuxData is expanded");
+  assert.equal(
+    dieMux.parent,
+    module,
+    "DieMuxData stays inside the included CreateObjectDie module",
+  );
+});
+
 test("local overlay wins over a global definition with the same id", async () => {
   const scope = await makeScope();
   const global = {

test/localize.test.mjs

@@ -0,0 +1,36 @@
+import { test } from "node:test";
+import assert from "node:assert/strict";
+import { createRequire } from "node:module";
+
+// Minimal vscode shim without l10n: exercises the fallback path that unit
+// tests and extension hosts without a loaded bundle use.
+const require = createRequire(import.meta.url);
+const Module = require("module");
+const origResolve = Module._resolveFilename;
+Module._resolveFilename = function (request, ...args) {
+  if (request === "vscode") return "vscode-stub";
+  return origResolve.call(this, request, ...args);
+};
+require.cache["vscode-stub"] = {
+  id: "vscode-stub",
+  filename: "vscode-stub",
+  loaded: true,
+  exports: {},
+};
+
+const { t, tN } = require("../out/localize.js");
+
+test("t fallback substitutes positional placeholders", () => {
+  assert.equal(t("Hello {0}!", "World"), "Hello World!");
+  assert.equal(t("{0} and {1}", "A", 2), "A and 2");
+  assert.equal(t("No placeholders"), "No placeholders");
+});
+
+test("tN fallback substitutes named placeholders", () => {
+  assert.equal(tN("Hello {name}", { name: "Codex" }), "Hello Codex");
+  assert.equal(
+    tN("Keep {missing}", {}),
+    "Keep {missing}",
+    "unknown placeholders stay untouched",
+  );
+});

test/projectRoot.test.mjs

@@ -0,0 +1,161 @@
+import { test } from "node:test";
+import assert from "node:assert/strict";
+import { mkdtempSync, mkdirSync, writeFileSync, rmSync } from "node:fs";
+import { tmpdir } from "node:os";
+import { join, resolve } from "node:path";
+import { createRequire } from "node:module";
+
+const require = createRequire(import.meta.url);
+const {
+  findProjectRootUpward,
+  findProjectRootForFile,
+  discoverProjects,
+  isProjectRoot,
+} = require("../out/projectRoot.js");
+
+let fixtureRoot;
+let counter = 0;
+
+function scratch(rel = "") {
+  if (!fixtureRoot) {
+    fixtureRoot = mkdtempSync(join(tmpdir(), "ra3-projectroot-"));
+  }
+  const dir = join(fixtureRoot, String(counter++), rel);
+  mkdirSync(dir, { recursive: true });
+  return dir;
+}
+
+function write(dir, rel, content = "") {
+  const file = join(dir, rel);
+  mkdirSync(join(file, ".."), { recursive: true });
+  writeFileSync(file, content);
+  return file;
+}
+
+test.after(() => {
+  if (fixtureRoot) rmSync(fixtureRoot, { recursive: true, force: true });
+});
+
+test("upward discovery: Data folder, subfolders and additionalmaps", () => {
+  const root = scratch();
+  write(root, "Data/Mod.xml", "<AssetDeclaration/>");
+  assert.equal(findProjectRootUpward(join(root, "Data")), resolve(root));
+  assert.equal(
+    findProjectRootUpward(join(root, "Data", "GlobalData", "Units")),
+    resolve(root),
+  );
+  assert.equal(
+    findProjectRootUpward(join(root, "Data", "additionalmaps", "nested")),
+    resolve(root),
+  );
+});
+
+test("upward discovery: mapmetadata-only mod", () => {
+  const root = scratch();
+  write(root, "Data/additionalmaps/mapmetadata_Global.xml", "<MapMetadata/>");
+  assert.equal(
+    findProjectRootUpward(join(root, "Data", "additionalmaps")),
+    resolve(root),
+  );
+  assert.equal(findProjectRootUpward(join(root, "Data")), resolve(root));
+  assert.equal(isProjectRoot(root), true);
+});
+
+test("upward discovery: case-insensitive Data and Mod.xml", () => {
+  const root = scratch();
+  write(root, "data/mod.xml", "<AssetDeclaration/>");
+  assert.equal(findProjectRootUpward(join(root, "Data")), resolve(root));
+  assert.equal(findProjectRootUpward(root), resolve(root));
+});
+
+test("upward discovery: babproj markers", () => {
+  const root = scratch();
+  write(root, "mod.babproj", "");
+  assert.equal(findProjectRootUpward(root), resolve(root));
+
+  const root2 = scratch();
+  write(root2, "SomeProject.babproj", "");
+  assert.equal(findProjectRootUpward(root2), resolve(root2));
+});
+
+test("upward discovery: no marker returns null", () => {
+  const root = scratch();
+  write(root, "random/file.txt", "x");
+  assert.equal(findProjectRootUpward(root), null);
+  assert.equal(findProjectRootUpward(join(root, "random")), null);
+});
+
+test("upward discovery: max depth respected", () => {
+  const root = scratch();
+  write(root, "Data/Mod.xml", "<AssetDeclaration/>");
+  let deep = root;
+  for (let i = 0; i < 14; i++) {
+    deep = join(deep, `level${i}`);
+    mkdirSync(deep);
+  }
+  assert.equal(findProjectRootUpward(deep, 12), null);
+  assert.equal(findProjectRootUpward(deep, 20), resolve(root));
+});
+
+test("upward discovery from a single file", () => {
+  const root = scratch();
+  write(root, "Data/additionalmaps/mapmetadata_Maps.xml", "<MapMetadata/>");
+  const file = write(root, "Data/Units/Unit.xml", "<AssetDeclaration/>");
+  assert.equal(findProjectRootForFile(file), resolve(root));
+});
+
+test("discoverProjects: sibling mods in a container", () => {
+  const container = scratch();
+  write(container, "ModA/Data/Mod.xml", "<AssetDeclaration/>");
+  write(
+    container,
+    "ModB/Data/additionalmaps/mapmetadata_B.xml",
+    "<MapMetadata/>",
+  );
+  const found = discoverProjects(container).map((p) => resolve(p));
+  assert.equal(found.length, 2);
+  assert.ok(found.includes(resolve(join(container, "ModA"))));
+  assert.ok(found.includes(resolve(join(container, "ModB"))));
+});
+
+test("discoverProjects: SDK-style deep layout (mods/mods/corona)", () => {
+  const container = scratch();
+  write(
+    container,
+    "mods/mods/corona/Data/Mod.xml",
+    "<AssetDeclaration/>",
+  );
+  const found = discoverProjects(container).map((p) => resolve(p));
+  assert.deepEqual(found, [resolve(join(container, "mods", "mods", "corona"))]);
+});
+
+test("discoverProjects: skips known non-mod directories", () => {
+  const container = scratch();
+  write(
+    container,
+    "node_modules/FakeMod/Data/Mod.xml",
+    "<AssetDeclaration/>",
+  );
+  write(container, ".git/Data/Mod.xml", "<AssetDeclaration/>");
+  assert.deepEqual(discoverProjects(container), []);
+});
+
+test("discoverProjects: de-duplicates and stops at a root", () => {
+  const container = scratch();
+  write(container, "ModA/Data/Mod.xml", "<AssetDeclaration/>");
+  write(container, "ModA/Inner/Data/Mod.xml", "<AssetDeclaration/>");
+  const first = discoverProjects(container);
+  const second = discoverProjects(container);
+  assert.deepEqual(second, first);
+  assert.equal(first.length, 1);
+  assert.equal(resolve(first[0]), resolve(join(container, "ModA")));
+});
+
+test("nested roots: nearest ancestor wins upward", () => {
+  const outer = scratch();
+  write(outer, "Data/Mod.xml", "<AssetDeclaration/>");
+  const inner = join(outer, "Inner");
+  write(inner, "Data/Mod.xml", "<AssetDeclaration/>");
+  const file = write(inner, "Data/Units/Unit.xml", "<AssetDeclaration/>");
+  assert.equal(findProjectRootForFile(file), resolve(inner));
+});

test/records.test.mjs

@@ -24,7 +24,7 @@ test("extractIndexRecords mirrors the walk semantics", () => {
   </GameObject>
 </AssetDeclaration>`;
   const lineMap = new LineMap(text);
-  const records = extractIndexRecords(parseXml(text), lineMap);
+  const records = extractIndexRecords(parseXml(text), lineMap, text);
   assert.deepEqual(
     records.assets.map((a) => [a.type, a.id, a.line]),
     [
@@ -62,4 +62,54 @@ test("recordsFromShallow converts offsets to 1-based lines", () => {
   assert.equal(records.assets[0].type, "W3DContainer");
   assert.equal(records.assets[0].id, "A");
   assert.equal(records.assets[0].line, 2);
+  assert.deepEqual(records.references, []);
+});
+
+test("extractIndexRecords records typed references and skips non-references", () => {
+  const text = `<AssetDeclaration>
+  <GameObject id="Tank" CommandSet="CS" inheritFrom="Base" KindOf="SELECTABLE"/>
+  <ObjectCreationList id="OCL">
+    <CreateObject>
+      <CreateObject>Tank</CreateObject>
+    </CreateObject>
+  </ObjectCreationList>
+  <CameraSettings id="S"/>
+</AssetDeclaration>`;
+  const lineMap = new LineMap(text);
+  const records = extractIndexRecords(parseXml(text), lineMap, text);
+
+  const attrs = records.references.filter((r) => r.kind === "attr");
+  const content = records.references.filter((r) => r.kind === "content");
+
+  // Typed attribute reference keeps the XSD refType.
+  const cs = attrs.find((r) => r.value === "CS");
+  assert.ok(cs, "CommandSet reference is recorded");
+  assert.equal(cs.refType, "LogicCommandSet");
+  assert.equal(cs.selfType, null);
+  assert.equal(cs.line, 2);
+  assert.equal(records.references.some((r) => r.start === cs.start && r.end === cs.end), true);
+
+  // inheritFrom records the element type as selfType instead of refType.
+  const base = attrs.find((r) => r.value === "Base");
+  assert.ok(base, "inheritFrom reference is recorded");
+  assert.equal(base.refType, null);
+  assert.equal(base.selfType, "GameObject");
+
+  // Enums and non-reference values are not references.
+  assert.equal(attrs.some((r) => r.value === "SELECTABLE"), false);
+
+  // Simple-content text is recorded with its content refType and offsets.
+  const tank = content.find((r) => r.value === "Tank");
+  assert.ok(tank, "content reference is recorded");
+  assert.equal(tank.refType, "GameObject");
+  const line = text.split("\n")[4];
+  assert.equal(line.slice(tank.start - text.indexOf(line), tank.end - text.indexOf(line)), "Tank");
+
+  // The id definition itself is never recorded as a reference.
+  assert.equal(
+    records.references.some(
+      (r) => r.value === "Tank" && r.kind === "attr",
+    ),
+    false,
+  );
 });

test/referenceIndex.test.mjs

@@ -0,0 +1,398 @@
+import { test } from "node:test";
+import assert from "node:assert/strict";
+import { fileURLToPath } from "node:url";
+import { dirname, join } from "node:path";
+import {
+  mkdirSync,
+  mkdtempSync,
+  rmSync,
+  statSync,
+  writeFileSync,
+} from "node:fs";
+import { tmpdir } from "node:os";
+import { ModIndexer } from "../out/indexer/indexer.js";
+import { CachedDirectoryWalker } from "../out/indexer/fileScanner.js";
+import {
+  IndexRecordsCache,
+  contentHash,
+  normKey,
+  recordsHash,
+} from "../out/indexer/caches.js";
+import {
+  assetDefKey,
+  buildReferenceIndex,
+  documentRecordsDesynced,
+  referenceSitesForDef,
+  referenceSitesForDefinition,
+  scheduleRebuildIfRecordsDesync,
+  unreferencedByType,
+} from "../out/indexer/referenceIndex.js";
+import { LineMap, parseXml } from "../out/language/xmlParser.js";
+import { extractIndexRecords } from "../out/indexer/records.js";
+
+const root = dirname(dirname(fileURLToPath(import.meta.url)));
+const project = join(root, "test", "fixtures", "minimod");
+const sdk = join(root, "test", "fixtures", "fakesdk");
+
+async function buildIndex() {
+  const indexer = new ModIndexer({
+    projectDir: project,
+    sdkDir: sdk,
+    builtmodsDirs: [join(sdk, "builtmods")],
+    indexSageXml: true,
+    additionalDataSearchPaths: [],
+    walker: new CachedDirectoryWalker(),
+  });
+  return indexer.build();
+}
+
+function makeDef(type, id, file, line, extra = {}) {
+  return {
+    type,
+    id,
+    file,
+    line,
+    origin: "project",
+    ...extra,
+  };
+}
+
+test("buildReferenceIndex resolves records with strict type filtering", () => {
+  const tank = makeDef("GameObject", "Tank", "C:/mod/A.xml", 2);
+  const gun = makeDef("WeaponTemplate", "Tank", "C:/mod/B.xml", 1);
+  const cs = makeDef("LogicCommandSet", "CS", "C:/mod/C.xml", 4);
+  const lookup = {
+    assets: new Map(),
+    assetsById: new Map([
+      ["tank", [tank, gun]],
+      ["cs", [cs]],
+    ]),
+  };
+  const recordsA = {
+    assets: [],
+    defines: [],
+    includes: [],
+    rootXiIncludes: [],
+    nestedXiIncludes: [],
+    references: [
+      {
+        kind: "content",
+        refType: "GameObject",
+        selfType: null,
+        value: "Tank",
+        line: 5,
+        start: 40,
+        end: 44,
+      },
+    ],
+  };
+  const recordsB = {
+    assets: [],
+    defines: [],
+    includes: [],
+    rootXiIncludes: [],
+    nestedXiIncludes: [],
+    references: [
+      {
+        kind: "attr",
+        refType: "LogicCommandSet",
+        selfType: null,
+        value: "CS",
+        line: 3,
+        start: 10,
+        end: 12,
+      },
+    ],
+  };
+
+  const map = buildReferenceIndex(
+    [
+      { file: "C:/mod/A.xml", records: recordsA },
+      { file: "C:/mod/B.xml", records: recordsB },
+    ],
+    lookup,
+  );
+
+  // The content reference resolves only to the GameObject definition, never
+  // to the same-name WeaponTemplate.
+  const tankSites = map.get(assetDefKey(tank));
+  assert.equal(tankSites.length, 1);
+  assert.equal(tankSites[0].file, "C:/mod/A.xml");
+  assert.equal(tankSites[0].kind, "content");
+  assert.equal(map.get(assetDefKey(gun)), undefined);
+  assert.equal(map.get(assetDefKey(cs)).length, 1);
+});
+
+test("records extracted from XML resolve through the reference index", () => {
+  const text = `<AssetDeclaration>
+  <GameObject id="Tank" CommandSet="CS"/>
+  <LogicCommandSet id="CS"/>
+  <ObjectCreationList id="OCL">
+    <CreateObject>
+      <CreateObject>Tank</CreateObject>
+    </CreateObject>
+  </ObjectCreationList>
+</AssetDeclaration>`;
+  const lineMap = new LineMap(text);
+  const records = extractIndexRecords(parseXml(text), lineMap, text);
+  const file = "C:/mod/D.xml";
+  const tank = makeDef("GameObject", "Tank", file, 2);
+  const cs = makeDef("LogicCommandSet", "CS", file, 3);
+  const lookup = {
+    assets: new Map(),
+    assetsById: new Map([
+      ["tank", [tank]],
+      ["cs", [cs]],
+    ]),
+  };
+  const map = buildReferenceIndex([{ file, records }], lookup);
+
+  const tankSites = map.get(assetDefKey(tank));
+  assert.equal(tankSites.length, 1);
+  assert.equal(tankSites[0].kind, "content");
+  assert.equal(records.references.find((r) => r.value === "Tank").start, tankSites[0].start);
+
+  const csSites = map.get(assetDefKey(cs));
+  assert.equal(csSites.length, 1);
+  assert.equal(csSites[0].kind, "attr");
+});
+
+test("referenceSitesForDefinition unions manifest-source sites onto the SageXml source file", () => {
+  const tmp = mkdtempSync(join(tmpdir(), "ra3-refindex-"));
+  try {
+    const sdkDir = join(tmp, "sdk");
+    const projectDir = join(tmp, "project");
+    const sourceFile = join(sdkDir, "SageXml", "Includes", "Units.xml");
+    const shadowFile = join(projectDir, "Data", "Includes", "Units.xml");
+    mkdirSync(dirname(sourceFile), { recursive: true });
+    mkdirSync(dirname(shadowFile), { recursive: true });
+    writeFileSync(sourceFile, "<AssetDeclaration/>", "utf8");
+    writeFileSync(shadowFile, "<AssetDeclaration/>", "utf8");
+
+    const manifestDef = {
+      type: "GameObject",
+      id: "Tank",
+      file: join(sdkDir, "builtmods", "static.manifest"),
+      line: 0,
+      origin: "manifest",
+      manifestSource: "DATA:Includes/Units.xml",
+    };
+    const site = {
+      file: "C:/mod/ref.xml",
+      line: 3,
+      start: 10,
+      end: 14,
+      kind: "attr",
+    };
+    const idx = {
+      assets: new Map([["GameObject", new Map([["tank", [manifestDef]]])]]),
+      assetsById: new Map([["tank", [manifestDef]]]),
+      references: new Map([[assetDefKey(manifestDef), [site]]]),
+      projectDir,
+      sdkDir,
+    };
+
+    const sites = referenceSitesForDefinition(idx, {
+      type: "GameObject",
+      id: "Tank",
+      file: sourceFile,
+      line: 4,
+    });
+    assert.equal(sites.length, 1);
+    assert.equal(sites[0].file, "C:/mod/ref.xml");
+
+    // The mod file shadowing the same DATA: path must NOT inherit the
+    // manifest definition's sites; manifestSource maps to SageXml only.
+    const other = referenceSitesForDefinition(idx, {
+      type: "GameObject",
+      id: "Tank",
+      file: shadowFile,
+      line: 4,
+    });
+    assert.equal(other.length, 0);
+  } finally {
+    rmSync(tmp, { recursive: true, force: true });
+  }
+});
+
+test("the minimod indexer publishes a semantic reverse reference index", async () => {
+  const idx = await buildIndex();
+  assert.ok(idx.stats.referenceCount > 0, "reverse index is populated");
+
+  // Units.xml has CommandSet="TestTankCommandSet" and inheritFrom="BaseVehicle".
+  const lcs = idx.assets.get("LogicCommandSet").get("testtankcommandset")[0];
+  const lcsSites = idx.references.get(assetDefKey(lcs));
+  assert.ok(lcsSites && lcsSites.length >= 1);
+  assert.ok(lcsSites.some((s) => s.kind === "attr"));
+
+  const baseVehicle = idx.assets.get("GameObject").get("basevehicle")[0];
+  const bvSites = idx.references.get(assetDefKey(baseVehicle));
+  assert.ok(bvSites && bvSites.length >= 1);
+});
+
+test("references survive a records-cache invalidation during the build", async () => {
+  const recordsCache = new IndexRecordsCache();
+  const indexer = new ModIndexer({
+    projectDir: project,
+    sdkDir: sdk,
+    builtmodsDirs: [join(sdk, "builtmods")],
+    indexSageXml: true,
+    additionalDataSearchPaths: [],
+    walker: new CachedDirectoryWalker(),
+    recordsCache,
+  });
+  const unitsPath = join(project, "Data", "Includes", "Units.xml");
+  const idx = await indexer.build((phaseIndex) => {
+    if (!phaseIndex.complete) recordsCache.invalidate(unitsPath);
+  });
+  const lcs = idx.assets.get("LogicCommandSet").get("testtankcommandset")[0];
+  const sites = idx.references.get(assetDefKey(lcs));
+  assert.ok(
+    sites && sites.length >= 1,
+    "final snapshot keeps the walk-time reference records",
+  );
+});
+
+test("force rebuild verifies content even when every stat signal matches", async (t) => {
+  const tmp = mkdtempSync(join(tmpdir(), "ra3-refidx-"));
+  t.after(() => rmSync(tmp, { recursive: true, force: true }));
+  const file = join(tmp, "units.xml");
+  const diskText = `<AssetDeclaration><GameObject id="Tank"/></AssetDeclaration>`;
+  const cachedText = `<AssetDeclaration><GameObject id="Cached"/></AssetDeclaration>`;
+  writeFileSync(file, diskText);
+  const st = statSync(file);
+  const stamp = {
+    mtimeMs: st.mtimeMs,
+    size: st.size,
+    birthtimeMs: st.birthtimeMs,
+    ctimeMs: st.ctimeMs,
+  };
+  const cache = new IndexRecordsCache();
+  cache.set(file, {
+    stat: stamp,
+    records: extractIndexRecords(
+      parseXml(cachedText),
+      new LineMap(cachedText),
+      cachedText,
+    ),
+    kind: "full",
+    contentHash: contentHash(cachedText),
+  });
+  const opts = {
+    projectDir: tmp,
+    sdkDir: tmp,
+    builtmodsDirs: [],
+    indexSageXml: false,
+    additionalDataSearchPaths: [],
+    walker: new CachedDirectoryWalker(),
+    recordsCache: cache,
+  };
+
+  const trusted = new ModIndexer({ ...opts, trustUnchanged: true });
+  const trustedParsed = await trusted.readDocument(file);
+  assert.equal(
+    trustedParsed.records.assets[0].id,
+    "Cached",
+    "trusted rebuilds reuse the cached records without reading",
+  );
+
+  const forced = new ModIndexer({ ...opts, trustUnchanged: false });
+  const forcedParsed = await forced.readDocument(file);
+  assert.equal(
+    forcedParsed.records.assets[0].id,
+    "Tank",
+    "force rebuild re-reads a stat-matching but content-stale entry",
+  );
+  assert.equal(cache.get(file).contentHash, contentHash(diskText));
+});
+
+test("records-desync self-heal schedules a targeted rebuild only for clean files", () => {
+  const file = join(project, "Data", "Includes", "Units.xml");
+  const emptyRecords = extractIndexRecords(
+    parseXml("<AssetDeclaration/>"),
+    new LineMap("<AssetDeclaration/>"),
+    "<AssetDeclaration/>",
+  );
+  const idx = {
+    recordsHashes: new Map([[normKey(file), recordsHash(emptyRecords)]]),
+    references: new Map(),
+    assets: new Map(),
+    sdkDir: sdk,
+    projectDir: project,
+  };
+  assert.equal(
+    documentRecordsDesynced(idx, file, "<AssetDeclaration/>"),
+    false,
+  );
+  assert.equal(
+    documentRecordsDesynced(
+      idx,
+      file,
+      "<AssetDeclaration><GameObject id=\"Tank\"/></AssetDeclaration>",
+    ),
+    true,
+  );
+
+  let invalidated = null;
+  let scheduled = null;
+  const ws = {
+    index: idx,
+    invalidate: (p) => {
+      invalidated = p;
+    },
+    scheduleRebuild: (r) => {
+      scheduled = r;
+    },
+  };
+  assert.equal(
+    scheduleRebuildIfRecordsDesync(ws, {
+      uri: { fsPath: file, scheme: "file" },
+      isDirty: false,
+      getText: () => "<AssetDeclaration><GameObject id=\"Tank\"/></AssetDeclaration>",
+    }),
+    true,
+  );
+  assert.equal(invalidated, file);
+  assert.equal(scheduled, "records-desync");
+
+  invalidated = null;
+  scheduled = null;
+  assert.equal(
+    scheduleRebuildIfRecordsDesync(ws, {
+      uri: { fsPath: file, scheme: "file" },
+      isDirty: true,
+      getText: () => "<AssetDeclaration><GameObject id=\"Tank\"/></AssetDeclaration>",
+    }),
+    false,
+  );
+  assert.equal(scheduled, null);
+});
+
+test("unreferencedByType reports only meaningful project assets", async () => {
+  const idx = await buildIndex();
+  const map = unreferencedByType(idx);
+  const all = [...map.values()].flat();
+
+  assert.ok(all.length > 0, "some project assets are unreferenced");
+  assert.ok(
+    all.every((d) => d.origin === "project" && !d.viaInstance),
+    "only compiled-stream project definitions are reported",
+  );
+  assert.ok(
+    all.every((d) => !d.file.toLowerCase().includes("fakesdk")),
+    "SDK/manifest definitions are never reported",
+  );
+
+  // WeaponTemplate TestTankCannon is defined but never referenced.
+  const weapons = map.get("WeaponTemplate");
+  assert.ok(weapons.some((d) => d.id === "TestTankCannon"));
+
+  // LogicCommandSet TestTankCommandSet is referenced, so it must not appear.
+  const commandSets = map.get("LogicCommandSet");
+  assert.ok(!commandSets?.some((d) => d.id === "TestTankCommandSet"));
+
+  // referenceSitesForDef is stable across lookups and safe without a map.
+  const tankCannon = idx.assets.get("WeaponTemplate").get("testtankcannon")[0];
+  assert.deepEqual(referenceSitesForDef(idx, tankCannon), []);
+  assert.deepEqual(referenceSitesForDef(null, tankCannon), []);
+});

test/referenceProvider.test.mjs

@@ -0,0 +1,179 @@
+import { test } from "node:test";
+import assert from "node:assert/strict";
+import { createRequire } from "node:module";
+
+// Minimal vscode shim for the semantic reference provider.
+class Position {
+  constructor(line, character) {
+    this.line = line;
+    this.character = character;
+  }
+}
+class Range {
+  constructor(start, end) {
+    this.start = start;
+    this.end = end;
+  }
+}
+class Location {
+  constructor(uri, range) {
+    this.uri = uri;
+    this.range = range;
+  }
+}
+const Uri = {
+  file: (p) => ({ fsPath: p }),
+};
+
+const require = createRequire(import.meta.url);
+const Module = require("module");
+const origResolve = Module._resolveFilename;
+Module._resolveFilename = function (request, ...args) {
+  if (request === "vscode") return "vscode-stub";
+  return origResolve.call(this, request, ...args);
+};
+require.cache["vscode-stub"] = {
+  id: "vscode-stub",
+  filename: "vscode-stub",
+  loaded: true,
+  exports: {
+    Position,
+    Range,
+    Location,
+    Uri,
+    SymbolKind: {},
+    DocumentSymbol: class {},
+  },
+};
+
+const { Ra3ReferenceProvider } = require("../out/features/navigation.js");
+const { LineMap, parseXml } = require("../out/language/xmlParser.js");
+const { extractIndexRecords } = require("../out/indexer/records.js");
+const { buildReferenceIndex } = require("../out/indexer/referenceIndex.js");
+
+const FILE = "C:/mod/Data/Units.xml";
+const TEXT = `<AssetDeclaration>
+  <GameObject id="Tank"/>
+  <ObjectCreationList id="OCL">
+    <CreateObject>
+      <CreateObject>Tank</CreateObject>
+    </CreateObject>
+  </ObjectCreationList>
+</AssetDeclaration>`;
+
+function makeDocument(text = TEXT) {
+  const lineStarts = [0];
+  for (let i = 0; i < text.length; i++) {
+    if (text.charCodeAt(i) === 10) lineStarts.push(i + 1);
+  }
+  return {
+    uri: { fsPath: FILE },
+    getText: () => text,
+    offsetAt: (pos) => lineStarts[pos.line] + pos.character,
+    positionAt: (offset) => {
+      let lo = 0;
+      let hi = lineStarts.length - 1;
+      while (lo < hi) {
+        const mid = (lo + hi + 1) >> 1;
+        if (lineStarts[mid] <= offset) lo = mid;
+        else hi = mid - 1;
+      }
+      return new Position(lo, offset - lineStarts[lo]);
+    },
+  };
+}
+
+function makeScope() {
+  const parse = parseXml(TEXT);
+  const lineMap = new LineMap(TEXT);
+  const records = extractIndexRecords(parse, lineMap, TEXT);
+  const def = {
+    type: "GameObject",
+    id: "Tank",
+    file: FILE,
+    line: 2,
+    origin: "project",
+  };
+  const lookup = {
+    assets: new Map([["GameObject", new Map([["tank", [def]]])]]),
+    assetsById: new Map([["tank", [def]]]),
+  };
+  const references = buildReferenceIndex([{ file: FILE, records }], lookup);
+  const idx = {
+    ...lookup,
+    references,
+    complete: true,
+    phase: "art",
+    projectDir: "C:/mod",
+    sdkDir: "C:/sdk",
+    defines: new Map(),
+    files: new Map(),
+    streams: [],
+    manifests: new Map(),
+    sourceCandidates: [],
+    diagnostics: [],
+    stats: {},
+  };
+  return {
+    merged: idx,
+  };
+}
+
+function makeWs(scope) {
+  const parse = parseXml(TEXT);
+  const lineMap = new LineMap(TEXT);
+  const indexer = {
+    readDom: async (path) =>
+      path === FILE
+        ? { file: { path: FILE }, parse, lineMap, records: null }
+        : null,
+  };
+  return {
+    isRa3Workspace: () => true,
+    getScope: async () => scope,
+    indexer,
+    indexerForFile: () => indexer,
+    activeIndexer: () => indexer,
+    recordsSyncSurfaceFor: () => ({
+      get index() {
+        return scope.merged;
+      },
+      invalidate: () => {},
+      scheduleRebuild: () => {},
+    }),
+  };
+}
+
+test("semantic Find All References excludes the definition even when includeDeclaration is set", async () => {
+  const scope = makeScope();
+  const provider = new Ra3ReferenceProvider(makeWs(scope));
+  const document = makeDocument();
+  const defLine = TEXT.split("\n")[1];
+  const defPos = new Position(1, defLine.indexOf('id="') + 4);
+
+  const refs = await provider.provideReferences(document, defPos, {
+    includeDeclaration: true,
+  }, {});
+  assert.ok(refs, "references are returned");
+  assert.equal(refs.length, 1, "only the typed content reference is returned");
+  assert.equal(refs[0].uri.fsPath, FILE);
+  assert.equal(refs[0].range.start.line, 4);
+  assert.equal(
+    TEXT.split("\n")[4].slice(refs[0].range.start.character, refs[0].range.end.character),
+    "Tank",
+  );
+});
+
+test("FAR from the reference site itself returns the same result", async () => {
+  const scope = makeScope();
+  const provider = new Ra3ReferenceProvider(makeWs(scope));
+  const document = makeDocument();
+  const contentLine = TEXT.split("\n")[4];
+  const contentPos = new Position(4, contentLine.indexOf("Tank") + 1);
+
+  const refs = await provider.provideReferences(document, contentPos, {
+    includeDeclaration: false,
+  }, {});
+  assert.equal(refs.length, 1);
+  assert.equal(refs[0].range.start.line, 4);
+});

test/sdk.test.mjs

@@ -0,0 +1,124 @@
+import { test } from "node:test";
+import assert from "node:assert/strict";
+import { fileURLToPath } from "node:url";
+import { dirname, join, resolve } from "node:path";
+import { mkdirSync, mkdtempSync, rmSync, writeFileSync } from "node:fs";
+import { tmpdir } from "node:os";
+import {
+  normalizeSdkPath,
+  parseRegistryInstallLocation,
+  validateSdkPath,
+} from "../out/sdk.js";
+
+const root = dirname(dirname(fileURLToPath(import.meta.url)));
+
+function makeSdk(extra = {}) {
+  const dir = mkdtempSync(join(tmpdir(), "ra3-sdk-"));
+  const rel = (p) => join(dir, ...p.split("/"));
+  mkdirSync(rel("Schemas/xsd"), { recursive: true });
+  writeFileSync(
+    join(rel("Schemas/xsd"), "CnC3Types.xsd"),
+    "<xs:schema/>",
+    "utf8",
+  );
+  for (const d of extra.dirs ?? []) mkdirSync(rel(d), { recursive: true });
+  for (const f of extra.files ?? []) {
+    mkdirSync(dirname(rel(f)), { recursive: true });
+    writeFileSync(rel(f), "x", "utf8");
+  }
+  return dir;
+}
+
+function withTemp(fn) {
+  const dir = mkdtempSync(join(tmpdir(), "ra3-sdk-case-"));
+  try {
+    return fn(dir);
+  } finally {
+    rmSync(dir, { recursive: true, force: true });
+  }
+}
+
+test("normalizeSdkPath trims quotes and resolves to an absolute path", () => {
+  const raw = ` "${join(root, "test", "fixtures", "fakesdk")}" `;
+  assert.equal(normalizeSdkPath(raw), resolve(join(root, "test", "fixtures", "fakesdk")));
+  assert.equal(normalizeSdkPath("  "), "");
+  assert.equal(normalizeSdkPath(""), "");
+});
+
+test("validateSdkPath: empty value is missing", () => {
+  const v = validateSdkPath("");
+  assert.equal(v.status, "missing");
+  assert.equal(v.path, "");
+});
+
+test("validateSdkPath: nonexistent path is missing", () => {
+  const v = validateSdkPath(join(tmpdir(), "ra3-no-such-sdk"));
+  assert.equal(v.status, "missing");
+  assert.ok(v.path);
+});
+
+test("validateSdkPath: directory without the SDK marker is not an SDK", () => {
+  withTemp((dir) => {
+    const v = validateSdkPath(dir);
+    assert.equal(v.status, "not-sdk");
+    assert.deepEqual(v.missing, ["Schemas/xsd/CnC3Types.xsd"]);
+  });
+});
+
+test("validateSdkPath: partial lists the missing functional items", () => {
+  const dir = makeSdk({
+    dirs: ["builtmods"],
+    files: ["Static.xml"],
+  });
+  try {
+    const v = validateSdkPath(dir);
+    assert.equal(v.status, "partial");
+    assert.deepEqual(v.missing, [
+      "SageXml",
+      "Mods",
+      "Global.xml",
+      "Audio.xml",
+    ]);
+  } finally {
+    rmSync(dir, { recursive: true, force: true });
+  }
+});
+
+test("validateSdkPath: complete SDK is ok", () => {
+  const dir = makeSdk({
+    dirs: ["builtmods", "SageXml", "Mods"],
+    files: ["Static.xml", "Global.xml", "Audio.xml"],
+  });
+  try {
+    const v = validateSdkPath(dir);
+    assert.equal(v.status, "ok");
+    assert.deepEqual(v.missing, []);
+  } finally {
+    rmSync(dir, { recursive: true, force: true });
+  }
+});
+
+test("validateSdkPath: marker matching is case-insensitive on Windows", (t) => {
+  if (process.platform !== "win32") return t.skip("case-insensitive fs is Windows-only");
+  withTemp((dir) => {
+    mkdirSync(join(dir, "schemas", "xsd"), { recursive: true });
+    writeFileSync(join(dir, "schemas", "xsd", "cnc3types.xsd"), "x", "utf8");
+    const v = validateSdkPath(dir);
+    assert.notEqual(v.status, "not-sdk", "lower-case marker still identifies the SDK");
+  });
+});
+
+test("parseRegistryInstallLocation extracts the value from reg.exe output", () => {
+  const out = [
+    "",
+    "HKEY_LOCAL_MACHINE\\Software\\Wow6432Node\\...",
+    "    InstallLocation    REG_SZ    C:\\Apps\\RA3-MODSDK-X",
+    "",
+  ].join("\r\n");
+  assert.equal(parseRegistryInstallLocation(out), "C:\\Apps\\RA3-MODSDK-X");
+  assert.equal(parseRegistryInstallLocation("no such key"), null);
+  assert.equal(
+    parseRegistryInstallLocation("    DisplayName    REG_SZ    SDK"),
+    null,
+  );
+});

test/workspaceMulti.test.mjs

@@ -0,0 +1,281 @@
+import { test } from "node:test";
+import assert from "node:assert/strict";
+import {
+  mkdtempSync,
+  mkdirSync,
+  writeFileSync,
+  rmSync,
+} from "node:fs";
+import { tmpdir } from "node:os";
+import { join, resolve } from "node:path";
+import { fileURLToPath } from "node:url";
+import { createRequire } from "node:module";
+
+// ── Minimal vscode shim for ModWorkspace (multi-project behavior) ──────
+const stubState = {
+  workspaceFolders: [],
+  textDocuments: [],
+  activeEditor: null,
+  config: {
+    sdkPath: "",
+    indexSageXml: true,
+    reportUnresolvedReferences: "warning",
+    diagnoseUnknownElements: true,
+    definitionMode: "all",
+    additionalDataSearchPaths: [],
+  },
+};
+
+class RelativePattern {
+  constructor(base, pattern) {
+    this.base = base;
+    this.pattern = pattern;
+  }
+}
+
+class OutputChannel {
+  appendLine() {}
+  dispose() {}
+}
+
+class StatusBarItem {
+  constructor() {
+    this.name = "";
+    this.command = "";
+    this.text = "";
+    this.tooltip = "";
+  }
+  show() {
+    this.visible = true;
+  }
+  hide() {
+    this.visible = false;
+  }
+  dispose() {}
+}
+
+function makeWatcher() {
+  return {
+    onDidCreate: () => ({ dispose() {} }),
+    onDidChange: () => ({ dispose() {} }),
+    onDidDelete: () => ({ dispose() {} }),
+    dispose() {},
+  };
+}
+
+const require = createRequire(import.meta.url);
+const Module = require("module");
+const origResolve = Module._resolveFilename;
+Module._resolveFilename = function (request, ...args) {
+  if (request === "vscode") return "vscode-stub";
+  return origResolve.call(this, request, ...args);
+};
+require.cache["vscode-stub"] = {
+  id: "vscode-stub",
+  filename: "vscode-stub",
+  loaded: true,
+  exports: {
+    RelativePattern,
+    StatusBarAlignment: { Left: 1 },
+    workspace: {
+      getConfiguration: () => ({
+        get: (key, def) => stubState.config[key] ?? def,
+      }),
+      get workspaceFolders() {
+        return stubState.workspaceFolders;
+      },
+      get textDocuments() {
+        return stubState.textDocuments;
+      },
+      createFileSystemWatcher: () => makeWatcher(),
+      onDidCloseTextDocument: () => ({ dispose() {} }),
+    },
+    window: {
+      createOutputChannel: () => new OutputChannel(),
+      createStatusBarItem: () => new StatusBarItem(),
+      get activeTextEditor() {
+        return stubState.activeEditor;
+      },
+    },
+    commands: {
+      executeCommand: async () => undefined,
+    },
+  },
+};
+
+const { ModWorkspace } = require("../out/workspace.js");
+
+// ── Fixtures ────────────────────────────────────────────────────────────
+const FAKE_SDK = fileURLToPath(new URL("./fixtures/fakesdk", import.meta.url));
+let tmpRoot;
+let modA;
+let modB;
+let container;
+let storageDir;
+const MOD_A_TEXT = "<AssetDeclaration><GameObject id=\"UnitA\"/></AssetDeclaration>";
+const MOD_B_TEXT = "<AssetDeclaration><GameObject id=\"UnitB\"/></AssetDeclaration>";
+
+test.before(() => {
+  stubState.config.sdkPath = FAKE_SDK;
+  tmpRoot = mkdtempSync(join(tmpdir(), "ra3-multimod-"));
+  modA = join(tmpRoot, "container", "ModA");
+  modB = join(tmpRoot, "container", "ModB");
+  container = join(tmpRoot, "container");
+  storageDir = join(tmpRoot, "storage");
+  mkdirSync(join(modA, "Data"), { recursive: true });
+  mkdirSync(join(modB, "Data"), { recursive: true });
+  writeFileSync(join(modA, "Data", "Mod.xml"), MOD_A_TEXT);
+  writeFileSync(join(modB, "Data", "Mod.xml"), MOD_B_TEXT);
+});
+
+test.after(() => {
+  if (tmpRoot) rmSync(tmpRoot, { recursive: true, force: true });
+});
+
+function makeDoc(fsPath, text = "<AssetDeclaration/>") {
+  return {
+    uri: {
+      fsPath,
+      scheme: "file",
+      toString: () => `file://${fsPath}`,
+    },
+    languageId: "xml",
+    isDirty: false,
+    version: 1,
+    getText: () => text,
+  };
+}
+
+function makeWorkspace(folders) {
+  stubState.workspaceFolders = folders;
+  stubState.textDocuments = [];
+  stubState.activeEditor = null;
+  const context = {
+    storageUri: { fsPath: storageDir },
+    globalStorageUri: null,
+    subscriptions: [],
+  };
+  return new ModWorkspace(context);
+}
+
+async function waitForIndex(ws, doc) {
+  for (let i = 0; i < 500; i++) {
+    const idx = await ws.getIndex(doc);
+    if (idx?.complete && idx.stats.assetCount > 0) return idx;
+    await new Promise((r) => setTimeout(r, 20));
+  }
+  throw new Error(`timed out waiting for index of ${doc.uri.fsPath}`);
+}
+
+function stateForRoot(ws, root) {
+  const wanted = resolve(root).toLowerCase();
+  return [...ws.states.values()].find(
+    (s) => resolve(s.root).toLowerCase() === wanted,
+  );
+}
+
+test("single project folder is indexed immediately on initialize", async () => {
+  const ws = makeWorkspace([{ uri: { fsPath: modA } }]);
+  await ws.initialize();
+  assert.equal(ws.getProjectRoots().length, 1);
+  const idx = ws.activeIndex();
+  assert.ok(idx);
+  assert.equal(resolve(idx.stats.projectDir), resolve(modA));
+  assert.ok(idx.assetsById.has("unita"));
+  ws.dispose();
+});
+
+test("container folder discovers two projects and indexes lazily", async () => {
+  const ws = makeWorkspace([{ uri: { fsPath: container } }]);
+  await ws.initialize();
+
+  assert.equal(ws.getProjectRoots().length, 2);
+  assert.equal(ws.activeIndex(), null);
+
+  const docA = makeDoc(join(modA, "Data", "Mod.xml"), MOD_A_TEXT);
+  const docB = makeDoc(join(modB, "Data", "Mod.xml"), MOD_B_TEXT);
+  assert.equal(ws.getProjectRootFor(docA), resolve(modA));
+  assert.equal(ws.getProjectRootFor(docB), resolve(modB));
+  assert.ok(
+    ws.searchPaths(docA).DATA.some((d) => resolve(d) === resolve(join(modA, "Data"))),
+  );
+
+  // Opening ModA's document builds only ModA.
+  ws.onDocumentOpened(docA);
+  const idxA = await waitForIndex(ws, docA);
+  assert.equal(resolve(idxA.stats.projectDir), resolve(modA));
+  assert.ok(idxA.assetsById.has("unita"));
+
+  const stateB = stateForRoot(ws, modB);
+  assert.ok(stateB);
+  assert.equal(stateB.index, null);
+  assert.equal(stateB.buildCount, 0);
+
+  // Opening ModB's document builds ModB.
+  ws.onDocumentOpened(docB);
+  const idxB = await waitForIndex(ws, docB);
+  assert.equal(resolve(idxB.stats.projectDir), resolve(modB));
+  assert.ok(idxB.assetsById.has("unitb"));
+  ws.dispose();
+});
+
+test("with multiple projects the active editor's project builds on initialize", async () => {
+  const ws = makeWorkspace([{ uri: { fsPath: container } }]);
+  stubState.activeEditor = {
+    document: makeDoc(join(modB, "Data", "Mod.xml"), MOD_B_TEXT),
+  };
+  await ws.initialize();
+  const idx = ws.activeIndex();
+  assert.ok(idx);
+  assert.equal(resolve(idx.stats.projectDir), resolve(modB));
+  ws.dispose();
+});
+
+test("workspace folder changes add and remove projects", async () => {
+  const ws = makeWorkspace([{ uri: { fsPath: container } }]);
+  await ws.initialize();
+  assert.equal(ws.getProjectRoots().length, 2);
+
+  stubState.workspaceFolders = [{ uri: { fsPath: modA } }];
+  ws.onWorkspaceFoldersChanged();
+  assert.equal(ws.getProjectRoots().length, 1);
+  assert.equal(resolve(ws.getProjectRoots()[0]), resolve(modA));
+
+  stubState.workspaceFolders = [{ uri: { fsPath: container } }];
+  ws.onWorkspaceFoldersChanged();
+  assert.equal(ws.getProjectRoots().length, 2);
+  ws.dispose();
+});
+
+test("an unrelated active XML document falls back without recursion", async () => {
+  const ws = makeWorkspace([{ uri: { fsPath: container } }]);
+  const outside = join(tmpRoot, "outside.xml");
+  writeFileSync(outside, "<AssetDeclaration/>");
+  stubState.activeEditor = { document: makeDoc(outside) };
+  await ws.initialize();
+  // No project contains the active document, so nothing builds eagerly and
+  // activeIndex resolves to the first project (or null) without recursing.
+  assert.equal(ws.getProjectRoots().length, 2);
+  const idx = ws.activeIndex();
+  assert.equal(idx, null);
+  ws.dispose();
+});
+
+test("rebuilds for both projects complete through the serialized queue", async () => {
+  const ws = makeWorkspace([{ uri: { fsPath: container } }]);
+  await ws.initialize();
+  const docA = makeDoc(join(modA, "Data", "Mod.xml"), MOD_A_TEXT);
+  const docB = makeDoc(join(modB, "Data", "Mod.xml"), MOD_B_TEXT);
+
+  const p1 = ws.rebuild(false, "test-a", docA);
+  const p2 = ws.rebuild(false, "test-b", docB);
+  await Promise.all([p1, p2]);
+
+  const idxA = await waitForIndex(ws, docA);
+  const idxB = await waitForIndex(ws, docB);
+  assert.equal(resolve(idxA.stats.projectDir), resolve(modA));
+  assert.equal(resolve(idxB.stats.projectDir), resolve(modB));
+  assert.ok(idxA.assetsById.has("unita"));
+  assert.ok(idxB.assetsById.has("unitb"));
+  ws.dispose();
+});