feat: 增强 auto mode 的易用性 (#312)

* feat: poor 模式降级 yolo 审阅模型

* feat: 为多模块添加 Langfuse tracing 支持

在 web search、agent creation、away summary、token estimation、
skill improvement 等模块中集成 Langfuse trace，并透传至
compact/apiQueryHook/execPromptHook 等调用链。

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* fix: 让 auto mode 记录回主 trace

* fix: reopen auto mode prompt when classifier is unavailable

* fix: 修复 auto mode 情况下, llm 报错导致弹窗也不打开的问题

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

packages/builtin-tools/src/tools/WebSearchTool/adapters/apiAdapter.ts

@@ -9,6 +9,9 @@ import type {
 } from '@anthropic-ai/sdk/resources/beta/messages/messages.mjs'
 import { getFeatureValue_CACHED_MAY_BE_STALE } from 'src/services/analytics/growthbook.js'
 import { queryModelWithStreaming } from 'src/services/api/claude.js'
+import { createTrace, endTrace, isLangfuseEnabled } from 'src/services/langfuse/index.js'
+import { getSessionId } from 'src/bootstrap/state.js'
+import { getAPIProvider } from 'src/utils/model/providers.js'
 import { createUserMessage } from 'src/utils/messages.js'
 import { getMainLoopModel, getSmallFastModel } from 'src/utils/model/model.js'
 import { jsonParse } from 'src/utils/slowOperations.js'
@@ -38,6 +41,15 @@ export class ApiSearchAdapter implements WebSearchAdapter {
     const toolSchema = makeToolSchema({ allowedDomains, blockedDomains })
 
     const useHaiku = getFeatureValue_CACHED_MAY_BE_STALE('tengu_plum_vx3', false)
+    const model = useHaiku ? getSmallFastModel() : getMainLoopModel()
+    const langfuseTrace = isLangfuseEnabled()
+      ? createTrace({
+          sessionId: getSessionId(),
+          model,
+          provider: getAPIProvider(),
+          name: 'web-search-tool',
+        })
+      : null
 
     const queryStream = queryModelWithStreaming({
       messages: [userMessage],
@@ -58,7 +70,7 @@ export class ApiSearchAdapter implements WebSearchAdapter {
           alwaysAskRules: {},
           isBypassPermissionsModeAvailable: false,
         }),
-        model: useHaiku ? getSmallFastModel() : getMainLoopModel(),
+        model,
         toolChoice: useHaiku ? { type: 'tool' as const, name: 'web_search' } : undefined,
         isNonInteractiveSession: false,
         hasAppendSystemPrompt: false,
@@ -68,6 +80,7 @@ export class ApiSearchAdapter implements WebSearchAdapter {
         mcpTools: [],
         agentId: undefined,
         effortValue: undefined,
+        langfuseTrace,
       },
     })
 
@@ -148,6 +161,8 @@ export class ApiSearchAdapter implements WebSearchAdapter {
       }
     }
 
+    endTrace(langfuseTrace)
+
     // Extract SearchResult[] from content blocks
     return extractSearchResults(allContentBlocks)
   }