models + refactor

models/Post.py

@@ -1,14 +1,13 @@
 from datetime import datetime, timezone, UTC
-from typing import Optional, List
 from pydantic import BaseModel, Field, model_validator
 
 
 class Post(BaseModel):
-    id: Optional[str] = None
+    id: str | None = None
     date: datetime
     topic: str
-    generation_ids: List[str] = Field(default_factory=list)
-    project_id: Optional[str] = None
+    generation_ids: list[str] = Field(default_factory=list)
+    project_id: str | None = None
     created_by: str
     is_deleted: bool = False
     created_at: datetime = Field(default_factory=lambda: datetime.now(UTC))