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

app/agent/tools/impl/search_person_credits.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.douban import DoubanChain
 from app.chain.tmdb import TmdbChain
 from app.chain.bangumi import BangumiChain
@@ -22,6 +23,10 @@ class SearchPersonCreditsInput(BaseModel):
 
 class SearchPersonCreditsTool(MoviePilotTool):
     name: str = "search_person_credits"
+    tags: list[str] = [
+        ToolTag.Read,
+        ToolTag.Media,
+    ]
     description: str = "Search for films and TV shows that a person/actor has appeared in (filmography). Supports searching by person ID from TMDB, Douban, or Bangumi database. Returns a list of media works the person has participated in."
     args_schema: Type[BaseModel] = SearchPersonCreditsInput