v1.2.0: unified executor + flexible instance refs + params-render.js

Phase 1 — New modules:
- api/utils.py: find_uid(), uid_from_location() (replaces 2 duplicates)
- operations/poll.py: poll_until_done() (shared sync/async polling)
- operations/executor.py: execute_operation() (single CREATE/non-CREATE flow)

Phase 2 — Format + validation:
- routes/api_scenario_defs.py: _validate_steps with output/instance_ref/instance_uid
- operations/scenario.py: resolve instance_uid > instance_ref > service_id,
  use executor + poll_until_done, persist instance_bindings

Phase 3 — Migration:
- routes/api_test.py: create/non-create through executor, _finish_op through poll_until_done
- db/init_db.py: startup cleanup of stuck scenario_runs (>1h)

Phase 4 — UI shared module:
- static/js/params-render.js: renderParamRow, renderMapFixedRow, collectParams
- static/js/operations.js: use params-render.js (remove duplicates)
- templates/index.html: include params-render.js
- app.py: bump 1.1.57 → 1.2.0

site/app.py

@@ -19,7 +19,7 @@ from routes.api_scenario_run import bp_run as api_scenario_run_bp
 from routes.api_scenario_defs import bp_defs as api_scenario_defs_bp
 
 # Версия — меняется при КАЖДОМ изменении кода. Показывается в топбаре UI.
-VERSION = "1.1.57"
+VERSION = "1.2.0"
 
 app = Flask(__name__, template_folder="templates", static_folder="static")
 app.config["NUBES_API_ENDPOINT"] = os.getenv("NUBES_API_ENDPOINT", "https://lk-api-gateway-test.ngcloud.ru/api/v1/svc")