refactor: 전면 재설계 - 시작 시 채널 스팸 제거, content hash 중복 방지, 단일 이벤트 경로

config.py

@@ -21,24 +21,16 @@ class Config:
         os.path.expanduser("~/.gemini/antigravity/brain")
     ))
 
-    # Session activity detection
-    ACTIVE_TIMEOUT_SECONDS: int = int(os.getenv("ACTIVE_TIMEOUT_SECONDS", "300"))
-
     # Watcher settings
-    DEBOUNCE_SECONDS: float = float(os.getenv("DEBOUNCE_SECONDS", "2"))
+    DEBOUNCE_SECONDS: float = float(os.getenv("DEBOUNCE_SECONDS", "5"))
 
-    # Files to monitor within each conversation directory
+    # Files to monitor within each conversation directory (PRIMARY ONLY)
     WATCHED_FILES: set = {
         "task.md",
         "implementation_plan.md",
         "walkthrough.md",
     }
 
-    # Also monitor these patterns (matched by suffix)
-    WATCHED_SUFFIXES: set = {
-        ".metadata.json",  # artifact summary changes
-    }
-
     # Discord message limits
     DISCORD_MSG_LIMIT: int = 2000
     DISCORD_EMBED_DESC_LIMIT: int = 4096