feat: Add UI benchmark driver and scenarios for graph interactions

- Introduced `ui_bench_driver.mjs` to read scenarios and fixture manifest, generating a deterministic run plan.
- Created `ui_bench_plan.md` outlining the purpose, scope, and next steps for the benchmark.
- Added `ui_bench_scenarios.json` containing various scenarios for graph UI interactions.
- Implemented tests for CLI commands, ensuring bundle verification and telemetry defaults.
- Developed schemas for orchestrator components, including replay manifests and event envelopes.
- Added mock API for risk management, including listing and statistics functionalities.
- Implemented models for risk profiles and query options to support the new API.

ops/devops/telemetry/tests/telemetry-bundle.sha256

@@ -0,0 +1 @@
+6e3fedbf183aece5dfa14a90ebce955e2887d36747c424e628dc2cc03bcb0ed3  ops/devops/telemetry/tests/manifest-valid.json