v1.2.1: fix tracker_add in executor + labelCls + descr context + script order

Opus review fixes:
- executor.py: tracker_add inside executor after instance_uid, before params/run (A3, orphan protection)
- executor.py: descr parameter (version/context instead of hardcoded)
- api_test.py: pass client_id/stand/descr, remove duplicate tracker_add
- scenario.py: pass client_id/stand/descr with scenario context
- params-render.js: fix labelCls ReferenceError in renderMapFixedRow (pre-existing bug)
- index.html: params-render.js already before operations.js (verified)

site/operations/scenario.py

@@ -128,16 +128,19 @@ def run_scenario(client, steps, client_id, stand, user_email, app_version, scena
             if is_create:
                 instance_uid = None
                 display_name = f"{AUTOTEST_PREFIX}{scenario_name}-{uuid.uuid4().hex[:6]}"
+                descr = f"scenario {scenario_name} step {step_num}"
             else:
                 instance_uid = _resolve_instance_uid(step, bindings, instance_map)
                 if not instance_uid:
                     raise ValueError(f"No instance for step {step_num} — need CREATE before non-create operations")
                 display_name = None
+                descr = None
 
             # 4. Запуск через executor
             result = execute_operation(
                 client, svc_id, op_name, instance_uid, resolved_params,
-                svc_op_id=svc_op_id, display_name=display_name
+                svc_op_id=svc_op_id, display_name=display_name, descr=descr,
+                client_id=client_id, stand=stand
             )
             if not result["ok"]:
                 raise RuntimeError(f"{op_name}: {result['error']} (step: {result['failed_step']})")