feat: MEMORY.md 访问保护、格式简化及预存问题修复

MEMORY.md 保护: 新建 file-guard.ts 共享守卫模块; read_file/write_file/search_files/run_command 禁止访问根目录 MEMORY.md; permissions.ts 增加 deniedPatterns 深度防御。格式简化: 元数据从 # 注释改为 > 引用语法; 校验规则从 6 条简化为 3 条; context-builder extractContent 适配。预存问题: 修复路径遍历前缀碰撞漏洞; 移除 browser_extract 内容截断; SearXNG 配置实时读取; web_search/web_fetch 移除截断; 侧边栏动态获取工具列表; 版本号 0.1.1

electron/harness/tools/built-in/index.ts

@@ -5,6 +5,19 @@
  */
 
 export { ReadFileTool, WriteFileTool, ListDirectoryTool, SearchFilesTool } from './filesystem';
-export { WebSearchTool, WebExtractTool } from './network';
+export { WebSearchTool, WebFetchTool } from './network';
 export { MemoryStoreTool, MemorySearchTool } from './memory';
 export { RunCommandTool } from './command';
+export {
+  BrowserOpenTool,
+  BrowserScreenshotTool,
+  BrowserEvaluateTool,
+  BrowserExtractTool,
+  BrowserClickTool,
+  BrowserTypeTool,
+  BrowserScrollTool,
+  BrowserWaitTool,
+  BrowserCloseTool,
+  browserTools,
+  cleanupBrowser,
+} from './browser';