feat: improve direct model workspace tools

Direct models now use bundled ripgrep for workspace discovery, read files through resumable pages, and edit multiple files with apply_patch. Ask can search and read while Execute retains write access, and fixed total input limits no longer constrain these tools.

Release note: 直连模型现可使用随包 ripgrep 搜索项目、分页读取任意大小的文本，并通过多文件补丁修改代码；设置中的相关能力统一显示为工作区文件和开发工具。

tests/build-portable.test.ts

@@ -42,6 +42,15 @@ describe('Portable package resources', () => {
         'agent-runtime-lock.json'
       )
     )
+    expect(requiredPaths).toContain(
+      join(
+        directory,
+        'resources',
+        'runtimes',
+        'opencode',
+        'rg.exe'
+      )
+    )
     expect(requiredPaths).toContain(
       join(
         directory,