v5.1: 全面代码审查修复 — 安全加固 + 功能修复 + 测试补全 + 工程化

安全修复 (CRITICAL):
- 启用 CSP (default-src 'self')
- read_text_file 限制文件扩展名白名单 (.json/.csv/.txt)
- capabilities 显式声明窗口权限
- profile 名校验增强 (null 字节/控制字符/长度限制)

功能修复 (HIGH):
- AnalyzeDialog 重新打开时正确刷新数据
- UndoRedoButtons 订阅路径长度变化确保响应性
- 禁用状态持久化错误处理 (.catch → console.warn)
- 硬编码中文全部迁移到 i18n (6 处)
- PATH 长度检查改用 UTF-16 字符计数
- PATH 写入前 null 字节校验
- CLI export 拒绝写入系统目录
- savePaths 职责分离: window.confirm → Tauri ask() 对话框

代码质量 (MEDIUM):
- 导入路径统一过滤 (sanitize_paths: null 字节/分号/空白)
- 原子写入 (atomic_write: disabled.json + profiles)
- 验证缓存自动清理 (PathTable useEffect)
- Scanner 线程错误处理改进 (.unwrap → .map_err)
- Ctrl+F 去重 (移除 use-keyboard 重复处理)
- Profile 路径列表 key 修复 (index → path)
- 生产构建启用日志插件 (Warn 级别)
- export_paths JSON 序列化改 expect

测试:
- Rust: 35 → 48 测试 (+13)
- Frontend: 80 → 85 测试 (+5)
- Vitest 全局 jsdom + 覆盖率阈值 (80%)
- 安装 @vitest/coverage-v8 + test:coverage 脚本
- 移除未使用的 @testing-library/jest-dom

工程化:
- CI 添加 Cargo 缓存 (Swatinem/rust-cache@v2)
- CI 添加 cargo fmt --check
- tsconfig.test.json 覆盖测试文件类型检查
- cargo fmt 全量格式化

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/components/path-list/PathTable.tsx

@@ -1,4 +1,5 @@
 import { useState, useEffect, useMemo, useCallback, useRef } from 'react';
+import { useTranslation } from 'react-i18next';
 import { useAppStore } from '@/store/app-store';
 import { invoke } from '@tauri-apps/api/core';
 import { TargetType } from '@/core/undo-redo';
@@ -17,6 +18,7 @@ type ValidationState = 'valid' | 'invalid' | 'unknown';
 const DEFAULT_VALIDATION_STATE: ValidationState = 'valid';
 
 export function PathTable({ tabId }: PathTableProps) {
+  const { t } = useTranslation();
   const sysPaths = useAppStore((s) => s.sysPaths);
   const userPaths = useAppStore((s) => s.userPaths);
   const searchQuery = useAppStore((s) => s.searchQuery);
@@ -35,6 +37,33 @@ export function PathTable({ tabId }: PathTableProps) {
   const validatedRef = useRef<Set<string>>(new Set());
   const expandedRef = useRef<Set<string>>(new Set());
 
+  // 清理不再存在的路径缓存
+  useEffect(() => {
+    const currentKeys = new Set(paths.map(p => p.path));
+    setValidationCache(prev => {
+      let changed = false;
+      const next = new Map(prev);
+      for (const key of next.keys()) {
+        if (!currentKeys.has(key)) { next.delete(key); changed = true; }
+      }
+      return changed ? next : prev;
+    });
+    setExpandedCache(prev => {
+      let changed = false;
+      const next = new Map(prev);
+      for (const key of next.keys()) {
+        if (!currentKeys.has(key)) { next.delete(key); changed = true; }
+      }
+      return changed ? next : prev;
+    });
+    for (const key of [...validatedRef.current]) {
+      if (!currentKeys.has(key)) validatedRef.current.delete(key);
+    }
+    for (const key of [...expandedRef.current]) {
+      if (!currentKeys.has(key)) expandedRef.current.delete(key);
+    }
+  }, [paths]);
+
   // 过滤搜索
   const filtered = useMemo<PathRow[]>(() => {
     if (!searchQuery) return paths.map((p, i) => ({ path: p.path, index: i, enabled: p.enabled }));
@@ -160,7 +189,7 @@ export function PathTable({ tabId }: PathTableProps) {
           >
             <th className="w-8 px-2 py-1">#</th>
             <th className="w-6 px-1 py-1"></th>
-            <th className="px-2 py-1">路径</th>
+            <th className="px-2 py-1">{t('table.path')}</th>
           </tr>
         </thead>
         <tbody>