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/__tests__/messages.test.ts

@@ -457,9 +457,14 @@ describe("buildClassifierUnavailableMessage", () => {
     expect(msg).toContain("classifier-v1");
     expect(msg).toContain("unavailable");
   });
+
+  test("tells the model to wait and retry later", () => {
+    const msg = buildClassifierUnavailableMessage("Bash", "classifier-v1");
+    expect(msg).toContain("Wait briefly and then try this action again.");
+    expect(msg).toContain("come back to it later");
+  });
 });
 
-// ─── normalizeMessages ──────────────────────────────────────────────────
 
 describe("normalizeMessages", () => {
   test("splits multi-block assistant message into individual messages", () => {