feat: 添加对 langfuse 监控的支持 (#242)

* docs: 更新类型检查的 CLAUDE.md

* feat: 添加模型 1M 上下文切换

* chore: remove prefetchOfficialMcpUrls call on startup

* docs: 添加 git commit 规范

* feat: 第一次接入 langfuse

* fix: 修复 generation 的计时的错误

* feat: 添加多 agent 的监控

* feat: 添加 /poor 省流模式，toggle 关闭 extract_memories 和 prompt_suggestion

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

* chore: 修复 lock 文件

* chore: 更新类型依赖

---------

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

src/query.ts

@@ -107,9 +107,12 @@ import {
   getCurrentTurnTokenBudget,
   getTurnOutputTokens,
   incrementBudgetContinuationCount,
+  getSessionId,
 } from './bootstrap/state.js'
 import { createBudgetTracker, checkTokenBudget } from './query/tokenBudget.js'
 import { count } from './utils/array.js'
+import { createTrace, endTrace, isLangfuseEnabled } from './services/langfuse/index.js'
+import { getAPIProvider } from './utils/model/providers.js'
 
 /* eslint-disable @typescript-eslint/no-require-imports */
 const snipModule = feature('HISTORY_SNIP')
@@ -227,7 +230,38 @@ export async function* query(
   Terminal
 > {
   const consumedCommandUuids: string[] = []
-  const terminal = yield* queryLoop(params, consumedCommandUuids)
+
+  // Create Langfuse trace for this query turn (no-op if not configured).
+  // When called as a sub-agent, langfuseTrace is already set by runAgent()
+  // — reuse it instead of creating an independent trace.
+  const ownsTrace = !params.toolUseContext.langfuseTrace
+  const langfuseTrace = params.toolUseContext.langfuseTrace
+    ?? (isLangfuseEnabled()
+      ? createTrace({
+          sessionId: getSessionId(),
+          model: params.toolUseContext.options.mainLoopModel,
+          provider: getAPIProvider(),
+          input: params.messages,
+          querySource: params.querySource,
+        })
+      : null)
+
+  // Attach trace to toolUseContext so tool execution can record observations
+  const paramsWithTrace: QueryParams = langfuseTrace
+    ? {
+        ...params,
+        toolUseContext: { ...params.toolUseContext, langfuseTrace },
+      }
+    : params
+
+  let terminal: Terminal
+  try {
+    terminal = yield* queryLoop(paramsWithTrace, consumedCommandUuids)
+  } finally {
+    // Only end the trace if we created it — sub-agents own their traces
+    if (ownsTrace) endTrace(langfuseTrace)
+  }
+
   // Only reached if queryLoop returned normally. Skipped on throw (error
   // propagates through yield*) and on .return() (Return completion closes
   // both generators). This gives the same asymmetric started-without-completed
@@ -704,6 +738,7 @@ async function* queryLoop(
                   }),
                 },
               }),
+              langfuseTrace: toolUseContext.langfuseTrace,
             },
           })) {
             // We won't use the tool_calls from the first attempt