feat: migrate agent core to pydantic-ai framework

core/notification_agent.py

@@ -1,8 +1,11 @@
 import logging
 from typing import Any, Callable
+from pydantic_ai import Agent, RunContext
+from pydantic_ai.exceptions import ModelRetry
 from core.agent import BaseAgent
 from core.prompts import NOTIFICATION_READER_SYSTEM_PROMPT
 from core.notification_tools import NotificationTools
+from core.schemas import NotificationDecision
 
 logger: logging.Logger = logging.getLogger("agent-notification-reader")
 
@@ -13,13 +16,12 @@ class NotificationNoToolCalledError(Exception):
 
 
 class NotificationReaderAgent(BaseAgent):
-    """AI agent that reviews Gitea notifications and decides how to route them."""
+    """AI agent that reviews Gitea notifications and decides how to route them using Pydantic AI."""
 
     def __init__(self, model_name: str) -> None:
         super().__init__(model_name)
         self.system_prompt: str = NOTIFICATION_READER_SYSTEM_PROMPT
 
-
     async def decide_notification(
         self,
         mission: str,