move to postgresql

detect/checkpoint/storage.py

@@ -24,13 +24,14 @@ logger = logging.getLogger(__name__)
 
 
 def _has_db() -> bool:
-    """Check if the DB layer is available (Django + models generated by modelgen)."""
+    """Check if Postgres is reachable."""
     try:
-        from core.db.detect import get_stage_checkpoint as _
-        # Quick check that the model exists (modelgen may not have run yet)
-        from admin.mpr.media_assets.models import StageCheckpoint as _
+        from core.db.connection import get_session
+        from sqlmodel import text
+        with get_session() as session:
+            session.exec(text("SELECT 1"))
         return True
-    except (ImportError, Exception):
+    except Exception:
         return False
 
 
@@ -69,17 +70,13 @@ def save_checkpoint(
 
 
 def _save_to_db(job_id: str, stage: str, stage_index: int, data: dict) -> str:
-    """Save checkpoint structured data to Postgres via core/db."""
-    import uuid
+    """Save checkpoint structured data to Postgres."""
     from core.db.detect import save_stage_checkpoint
 
-    job_uuid = uuid.UUID(job_id) if isinstance(job_id, str) else job_id
-    checkpoint_id = uuid.uuid4()
     frames_prefix = f"{CHECKPOINT_PREFIX}/{job_id}/frames/"
 
     checkpoint = save_stage_checkpoint(
-        id=checkpoint_id,
-        job_id=job_uuid,
+        job_id=job_id,
         stage=stage,
         stage_index=stage_index,
         frames_prefix=frames_prefix,