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。

src/main/agent/model-runtime.ts

@@ -1,4 +1,5 @@
 import { createHash, randomBytes } from 'node:crypto'
+import { dirname } from 'node:path'
 import type {
   ApprovalDecision,
   AgentRuntimeStatus,
@@ -269,6 +270,7 @@ export type ModelRuntimeOptions = {
   maximumOutputTokens?: number
   directModelSubagentScheduler?: SubagentScheduler
   launchEnvironmentProvider?: LaunchEnvironmentProvider
+  ripgrepExecutablePath?: string
 }
 
 function getErrorMessage(value: unknown): string | undefined {
@@ -1654,8 +1656,14 @@ export class ModelAgentRuntime implements AgentRuntime {
         options.knowledgeGateway,
         options.webSearchEnabled,
         {
-          processService: new LocalDirectModelProcessService(),
-          subagentService: directModelSubagentService
+          processService: new LocalDirectModelProcessService({
+            environment: options.launchEnvironmentProvider?.(),
+            ...(options.ripgrepExecutablePath
+              ? { toolBinDirectory: dirname(options.ripgrepExecutablePath) }
+              : {})
+          }),
+          subagentService: directModelSubagentService,
+          ripgrepExecutablePath: options.ripgrepExecutablePath
         },
         options.launchEnvironmentProvider
       )