Merge pull request '权限控制' (#3) from feature/login-screen into master

Reviewed-on: #3

src/components/backend/AdminEditUserPrivilege.vue

@@ -0,0 +1,99 @@
+<template>
+  <div class="admin-edit-user-privilege">
+    <h2>管理员修改用户权限</h2>
+    <form class="edit-form" @submit.prevent="savePrivilege">
+      <div class="form-row">
+        <label for="uuid">用户UUID：</label>
+        <input id="uuid" v-model="uuid" placeholder="请输入用户UUID" required />
+      </div>
+      <div class="form-row">
+        <label for="privilege">权限：</label>
+        <select id="privilege" v-model="editPrivilege" required>
+          <option value="lv-admin">管理员</option>
+          <option value="lv-mod">模组</option>
+          <option value="lv-competitor">竞技</option>
+          <option value="lv-map">地图</option>
+          <option value="lv-user">用户</option>
+        </select>
+      </div>
+      <button type="submit">保存</button>
+    </form>
+    <div v-if="errorMsg" class="error-msg">{{ errorMsg }}</div>
+    <div v-if="successMsg" class="success-msg">{{ successMsg }}</div>
+  </div>
+</template>
+
+<script setup>
+import { ref } from 'vue'
+import { adminChangeUserPrivilege } from '@/api/login'
+
+const uuid = ref('')
+const editPrivilege = ref('lv-user')
+const errorMsg = ref('')
+const successMsg = ref('')
+
+const savePrivilege = async () => {
+  if (!uuid.value) return
+  errorMsg.value = ''
+  successMsg.value = ''
+  try {
+    await adminChangeUserPrivilege(uuid.value, editPrivilege.value)
+    successMsg.value = '权限修改成功！'
+  } catch (e) {
+    errorMsg.value = e.response?.data?.detail || '权限修改失败'
+  }
+}
+</script>
+
+<style scoped>
+.admin-edit-user-privilege {
+  max-width: 400px;
+  margin: 0 auto;
+  background: #fff;
+  padding: 24px;
+  border-radius: 10px;
+  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
+}
+.edit-form {
+  display: flex;
+  flex-direction: column;
+  gap: 18px;
+}
+.form-row {
+  display: flex;
+  flex-direction: column;
+  gap: 6px;
+}
+label {
+  font-weight: 500;
+}
+input, select {
+  padding: 8px 10px;
+  border: 1px solid #cbd5e1;
+  border-radius: 6px;
+  font-size: 1rem;
+}
+button[type="submit"] {
+  margin-top: 10px;
+  padding: 10px 0;
+  background: #2563eb;
+  color: #fff;
+  border: none;
+  border-radius: 6px;
+  font-size: 1rem;
+  font-weight: 600;
+  cursor: pointer;
+  transition: background 0.2s;
+}
+button[type="submit"]:hover {
+  background: #1d4ed8;
+}
+.error-msg {
+  color: #e53e3e;
+  margin-top: 16px;
+}
+.success-msg {
+  color: #16a34a;
+  margin-top: 16px;
+}
+</style>