Guard against missing marketplace tables when recording inventory operations

pos/services/inventory_engine.py

@@ -122,7 +122,15 @@ def record_operation(conn, inventory_id, branch_id, operation_type, quantity,
     ))
     op_id = cur.fetchone()[0]
 
-    # Queue ML stock sync if this product has an active ML listing
+    # Queue ML stock sync if this product has an active ML listing.
+    # Skip gracefully if the marketplace tables do not exist in this tenant.
+    cur.execute("""
+        SELECT 1 FROM information_schema.tables
+        WHERE table_schema = 'public'
+          AND table_name IN ('marketplace_listings', 'meli_sync_queue')
+        LIMIT 1
+    """)
+    if cur.fetchone():
         cur.execute("""
             INSERT INTO meli_sync_queue (inventory_id, action, status)
             SELECT %s, 'stock_update', 'pending'