Guard against missing marketplace tables when recording inventory operations

pos/services/inventory_engine.py

@@ -122,16 +122,24 @@ 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("""
-        INSERT INTO meli_sync_queue (inventory_id, action, status)
-        SELECT %s, 'stock_update', 'pending'
-        WHERE EXISTS (
-            SELECT 1 FROM marketplace_listings
-            WHERE inventory_id = %s AND channel = 'mercadolibre' AND is_active = true
-        )
-        ON CONFLICT DO NOTHING
-    """, (inventory_id, inventory_id))
+        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'
+            WHERE EXISTS (
+                SELECT 1 FROM marketplace_listings
+                WHERE inventory_id = %s AND channel = 'mercadolibre' AND is_active = true
+            )
+            ON CONFLICT DO NOTHING
+        """, (inventory_id, inventory_id))
 
     cur.close()
     return op_id