📄 移除不必要的 Copilot 专属路由

Author: cyfung1031

AGENTS.md

@@ -1,10 +1,9 @@
 # Repository Guidelines
 
 This is the repo-wide contract for AI coding agents. It owns only engineering principles and the architecture
-quick-map; concrete mechanics belong to the routed docs. `CLAUDE.md` imports this file, while
-`.github/copilot-instructions.md` keeps only Copilot-specific routing and behavior; neither duplicates the shared
-contract. Use [`docs/README.md`](docs/README.md) as the index and follow the owning doc instead of duplicating its
-rules.
+quick-map; concrete mechanics belong to the routed docs. Compatibility entry points reuse this file and have no
+separate contract. Use [`docs/README.md`](docs/README.md) as the index and follow the owning doc instead of
+duplicating its rules.
 
 ## Route the task before acting