added api

backend/app/homelab/state.py

@@ -0,0 +1,22 @@
+from datetime import datetime, timezone
+
+from sqlalchemy import select
+from sqlalchemy.orm import Session
+
+from app.db.models import AssistantState
+
+
+def get_state(db: Session, key: str) -> str | None:
+    row = db.get(AssistantState, key)
+    return row.value if row else None
+
+
+def set_state(db: Session, key: str, value: str) -> None:
+    row = db.get(AssistantState, key)
+    now = datetime.now(timezone.utc)
+    if row:
+        row.value = value
+        row.updated_at = now
+    else:
+        db.add(AssistantState(key=key, value=value, updated_at=now))
+    db.commit()