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/graph-indexer/release-plan.md

@@ -0,0 +1,42 @@
+# Graph Indexer Release/Offline Bundle Plan (DEVOPS-GRAPH-INDEX-28-010-REL)
+
+## Goals
+- Publish signed Helm/Compose bundles for Graph Indexer with offline parity.
+- Provide SBOM + attestations for images/charts and reproducible artefacts for air-gap kits.
+
+## Artefacts
+- Helm chart + values overrides (offline/airgap).
+- Docker/OCI images (indexer, api) pinned by digest.
+- SBOMs (SPDX JSON) for images and chart.
+- Cosign attestations for images and chart tarball.
+- Offline bundle: tarball containing images (oras layout), charts, values, SBOMs, attestations, and `SHA256SUMS`.
+
+## Pipeline outline
+1) **Build** images (indexer + api) with SBOM generation (`syft`), tag and record digests.
+2) **Sign** images with cosign key (KMS for online; file key for offline bundle) and produce attestations.
+3) **Chart package**: render chart, package to `.tgz`, generate SBOM for chart, sign with cosign.
+4) **Compose export**: render Compose file with pinned digests and non-root users.
+5) **Bundle**: assemble offline tarball:
+   - `images/` oras layout with signed images
+   - `charts/graph-indexer.tgz` + signature
+   - `compose/graph-indexer.yml` (pinned digests)
+   - `sboms/` for images + chart
+   - `attestations/` (cosign bundles)
+   - `SHA256SUMS` and `SHA256SUMS.sig`
+6) **Verify step**: pipeline stage runs `cosign verify`, `sha256sum --check`, and `helm template` smoke render with airgap values.
+7) **Publish**: upload to artefact store + offline kit; write manifest with hashes/versions.
+
+## Security/hardening
+- Non-root images, read-only rootfs, drop NET_RAW, seccomp default.
+- Telemetry disabled; no registry pulls at runtime.
+- mTLS between indexer and dependencies (documented values).
+
+## Evidence to capture
+- Image digests, SBOM hashes, cosign verification logs.
+- Bundle `SHA256SUMS` and signed manifest.
+- Helm/Compose render outputs (short).
+
+## Owners
+- DevOps Guild (build/pipeline)
+- Graph Indexer Guild (chart/values)
+- Platform Security (signing policy)