models + refactor

models/Settings.py

@@ -0,0 +1,10 @@
+from pydantic import BaseModel, Field
+from datetime import datetime, UTC
+
+class SystemSettings(BaseModel):
+    id: str = Field(default="system_settings", alias="_id")
+    use_ai_proxy: bool = False
+    updated_at: datetime = Field(default_factory=lambda: datetime.now(UTC))
+
+    class Config:
+        populate_by_name = True