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

app/agent/tools/impl/query_personas.py

@@ -7,6 +7,7 @@ from pydantic import BaseModel, Field
 
 from app.agent.runtime import agent_runtime_manager
 from app.agent.tools.base import MoviePilotTool
+from app.agent.tools.tags import ToolTag
 from app.log import logger
 
 
@@ -26,6 +27,10 @@ class QueryPersonasInput(BaseModel):
 
 class QueryPersonasTool(MoviePilotTool):
     name: str = "query_personas"
+    tags: list[str] = [
+        ToolTag.Read,
+        ToolTag.Persona,
+    ]
     description: str = (
         "List all available personas (人格) and show which one is currently active. "
         "Use this before switching persona when the user asks for a different speaking style but does not name "