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>

src/utils/permissions/permissions.ts

@@ -690,13 +690,16 @@ export const hasPermissionsToUseTool: CanUseToolFn = async (
       setClassifierChecking(toolUseID)
       let classifierResult
       try {
+        logForDebugging(
+          `[auto-mode] classifyYoloAction called with langfuseTrace=${context.langfuseTrace ? `id=${(context.langfuseTrace as unknown as Record<string, unknown>).id ?? 'present'}` : 'null/undefined'}`,
+        )
         classifierResult = await classifyYoloAction(
           context.messages,
           action,
           context.options.tools,
           appState.toolPermissionContext,
           context.abortController.signal,
-          context.langfuseTrace,
+          context.langfuseRootTrace ?? context.langfuseTrace,
         )
       } finally {
         clearClassifierChecking(toolUseID)
@@ -851,12 +854,30 @@ export const hasPermissionsToUseTool: CanUseToolFn = async (
               CLASSIFIER_FAIL_CLOSED_REFRESH_MS,
             )
           ) {
+            if (appState.toolPermissionContext.shouldAvoidPermissionPrompts) {
+              logForDebugging(
+                'Auto mode classifier unavailable, denying with retry guidance (fail closed)',
+                { level: 'warn' },
+              )
+              return {
+                behavior: 'deny',
+                decisionReason: {
+                  type: 'classifier',
+                  classifier: 'auto-mode',
+                  reason: 'Classifier unavailable',
+                },
+                message: buildClassifierUnavailableMessage(
+                  tool.name,
+                  classifierResult.model,
+                ),
+              }
+            }
             logForDebugging(
-              'Auto mode classifier unavailable, denying with retry guidance (fail closed)',
+              'Auto mode classifier unavailable, falling back to prompting with retry guidance (fail closed)',
               { level: 'warn' },
             )
             return {
-              behavior: 'deny',
+              behavior: 'ask',
               decisionReason: {
                 type: 'classifier',
                 classifier: 'auto-mode',