feat(types): Resolve strict mypy errors in api_hook_client.py, models.py, and events.py

models.py

@@ -49,9 +49,9 @@ class Ticket:
  def from_dict(cls, data: Dict[str, Any]) -> "Ticket":
   return cls(
    id=data["id"],
-   description=data.get("description"),
-   status=data.get("status"),
-   assigned_to=data.get("assigned_to"),
+   description=data.get("description", ""),
+   status=data.get("status", "todo"),
+   assigned_to=data.get("assigned_to", ""),
    target_file=data.get("target_file"),
    context_requirements=data.get("context_requirements", []),
    depends_on=data.get("depends_on", []),
@@ -97,7 +97,7 @@ class WorkerContext:
     """
  ticket_id: str
  model_name: str
- messages: List[dict]
+ messages: List[Dict[str, Any]]
 
 @dataclass
 class Metadata:
@@ -121,9 +121,9 @@ class Metadata:
   return cls(
    id=data["id"],
    name=data["name"],
-   status=data.get("status"),
-   created_at=datetime.fromisoformat(data['created_at']) if data.get('created_at') else None,
-   updated_at=datetime.fromisoformat(data['updated_at']) if data.get('updated_at') else None,
+   status=data.get("status", "todo"),
+   created_at=datetime.fromisoformat(data['created_at']) if data.get('created_at') else datetime.now(),
+   updated_at=datetime.fromisoformat(data['updated_at']) if data.get('updated_at') else datetime.now(),
   )
 
 @dataclass