feat(agent): add ToolTag-based tags to all agent tools; implement tags.py for unified tool capability tagging

app/agent/tools/impl/search_person.py

@@ -6,6 +6,7 @@ from typing import Optional, Type
 from pydantic import BaseModel, Field
 
 from app.agent.tools.base import MoviePilotTool
+from app.agent.tools.tags import ToolTag
 from app.chain.media import MediaChain
 from app.log import logger
 
@@ -18,6 +19,10 @@ class SearchPersonInput(BaseModel):
 
 class SearchPersonTool(MoviePilotTool):
     name: str = "search_person"
+    tags: list[str] = [
+        ToolTag.Read,
+        ToolTag.Media,
+    ]
     description: str = "Search for person information including actors, directors, etc. Supports searching by name. Returns detailed person information from TMDB, Douban, or Bangumi database."
     args_schema: Type[BaseModel] = SearchPersonInput