feat: T03+T04 backend - FastAPI, DB models, Rentman integration, admin auth, APScheduler

backend/app/schemas/sync.py

@@ -0,0 +1,28 @@
+"""Pydantic schemas for sync status and log."""
+from pydantic import BaseModel
+from datetime import datetime
+from typing import Any
+
+
+class SyncStatus(BaseModel):
+    last_sync: datetime | None = None
+    items_processed: int = 0
+    status: str = "never"
+
+
+class SyncLogEntry(BaseModel):
+    id: int
+    sync_type: str
+    status: str
+    items_processed: int
+    items_failed: int
+    error_message: str | None = None
+    started_at: datetime
+    completed_at: datetime | None = None
+
+    model_config = {"from_attributes": True}
+
+
+class SyncTriggerResponse(BaseModel):
+    sync_id: int
+    status: str