chore: simayi-approved changes - lint fixes, toolchain improvements, healthz

All changes reviewed and APPROVED in PR #12 (Review ID: 40):
- toolchain_routes: webhook repo/org format compat, content dedup (sha256), closed issue filter
- dispatcher: inform mail crash 误标 done 修复
- ticker: cleanup and improvements
- healthz endpoint
- conftest: integration/e2e deselect markers
- docs: design docs, test-guide updates
- various lint/whitespace fixes across 30 files

src/daemon/experience.py

@@ -14,7 +14,7 @@ import logging
 import re
 from datetime import datetime
 from pathlib import Path
-from typing import Any, Dict, List, Optional
+from typing import Any, Dict, List, Optional, Tuple
 
 logger = logging.getLogger("moziplus-v2.experience")
 
@@ -68,7 +68,7 @@ class Experience:
     @classmethod
     def from_dict(cls, data: Dict[str, Any]) -> Experience:
         return cls(**{k: v for k, v in data.items() if k != "id"},
-                   experience_id=data.get("id"))
+                    experience_id=data.get("id"))
 
 
 class ExperienceStore:
@@ -284,7 +284,7 @@ class ExperienceDistiller:
             all_tags.append(task_type)
 
         results = self.store.search(tags=all_tags if all_tags else None,
-                                    query=query, limit=limit)
+                                     query=query, limit=limit)
 
         # 按置信度排序
         results.sort(key=lambda e: e.confidence, reverse=True)