Add unit tests for PackRunAttestation and SealedInstallEnforcer

- Implement comprehensive tests for PackRunAttestationService, covering attestation generation, verification, and event emission.
- Add tests for SealedInstallEnforcer to validate sealed install requirements and enforcement logic.
- Introduce a MonacoLoaderService stub for testing purposes to prevent Monaco workers/styles from loading during Karma runs.

docs/implplan/tasks-all.md

@@ -2109,13 +2109,13 @@
 | WEB-AOC-19-007 | TODO | 2025-11-08 | SPRINT_116_concelier_v | Concelier WebService Guild, QA Guild (src/Concelier/StellaOps.Concelier.WebService) | src/Concelier/StellaOps.Concelier.WebService |  |  |  |
 | WEB-CONSOLE-23-001 | DONE (2025-11-28) | 2025-11-28 | SPRINT_0212_0001_0001_web_i | BE-Base Platform Guild · Product Analytics Guild | src/Web/StellaOps.Web | `/console/dashboard` and `/console/filters` aggregates shipped with tenant scoping, deterministic ordering, and 8 unit tests per sprint Execution Log 2025-11-28. | — |  |
 | WEB-CONSOLE-23-002 | DOING (2025-12-01) | 2025-12-01 | SPRINT_0212_0001_0001_web_i | BE-Base Platform Guild · Scheduler Guild | src/Web/StellaOps.Web | Implementing `/console/status` polling and `/console/runs/{id}/stream` SSE/WebSocket proxy with heartbeat/backoff; awaiting storage cleanup to run tests. Dependencies: WEB-CONSOLE-23-001. | WEB-CONSOLE-23-001 |  |
-| WEB-CONSOLE-23-003 | BLOCKED | 2025-12-06 | SPRINT_0212_0001_0001_web_i | BE-Base Platform Guild, Policy Guild (src/Web/StellaOps.Web) | src/Web/StellaOps.Web | Add `/console/exports` POST/GET routes coordinating evidence bundle creation, streaming CSV/JSON exports, checksum manifest retrieval, and signed attestation references. Ensure requests honor tenant + policy scopes and expose job tracking metadata. Dependencies: WEB-CONSOLE-23-002. |  | Waiting on bundle orchestration flow/manifest schema + streaming budget from Policy Guild. |
+| WEB-CONSOLE-23-003 | BLOCKED | 2025-12-06 | SPRINT_0212_0001_0001_web_i | BE-Base Platform Guild, Policy Guild (src/Web/StellaOps.Web) | src/Web/StellaOps.Web | Add `/console/exports` POST/GET routes coordinating evidence bundle creation, streaming CSV/JSON exports, checksum manifest retrieval, and signed attestation references. Ensure requests honor tenant + policy scopes and expose job tracking metadata. Dependencies: WEB-CONSOLE-23-002. |  | Draft contract + samples published (docs/api/console/workspaces.md; samples under docs/api/console/samples/*); awaiting guild sign-off. |
 | WEB-CONSOLE-23-004 | BLOCKED | 2025-12-06 | SPRINT_0212_0001_0001_web_i | BE-Base Platform Guild (src/Web/StellaOps.Web) | src/Web/StellaOps.Web | Implement `/console/search` endpoint accepting CVE/GHSA/PURL/SBOM identifiers, performing fan-out queries with caching, ranking, and deterministic tie-breaking. Return typed results for Console navigation; respect result caps and latency SLOs. Dependencies: WEB-CONSOLE-23-003. |  | Blocked by WEB-CONSOLE-23-003 contract. |
 | WEB-CONSOLE-23-005 | BLOCKED | 2025-12-06 | SPRINT_0212_0001_0001_web_i | BE-Base Platform Guild, DevOps Guild (src/Web/StellaOps.Web) | src/Web/StellaOps.Web | Serve `/console/downloads` JSON manifest (images, charts, offline bundles) sourced from signed registry metadata; include integrity hashes, release notes links, and offline instructions. Provide caching headers and documentation. Dependencies: WEB-CONSOLE-23-004. |  | Blocked by WEB-CONSOLE-23-004; download manifest format not defined. |
 | WEB-CONTAINERS-44-001 | DONE | 2025-11-18 | SPRINT_0212_0001_0001_web_i | BE-Base Platform Guild (src/Web/StellaOps.Web) | src/Web/StellaOps.Web | Expose `/welcome` state, config discovery endpoint (safe values), and `QUICKSTART_MODE` handling for Console banner; add `/health/liveness`, `/health/readiness`, `/version` if missing. |  |  |
 | WEB-CONTAINERS-45-001 | DONE | 2025-11-19 | SPRINT_0212_0001_0001_web_i | BE-Base Platform Guild (src/Web/StellaOps.Web) | src/Web/StellaOps.Web | Ensure readiness endpoints reflect DB/queue readiness, add feature flag toggles via config map, and document NetworkPolicy ports. Dependencies: WEB-CONTAINERS-44-001. |  |  |
 | WEB-CONTAINERS-46-001 | DONE | 2025-11-19 | SPRINT_0212_0001_0001_web_i | BE-Base Platform Guild (src/Web/StellaOps.Web) | src/Web/StellaOps.Web | Provide offline-friendly asset serving (no CDN), allow overriding object store endpoints via env, and document fallback behavior. Dependencies: WEB-CONTAINERS-45-001. |  |  |
-| WEB-EXC-25-001 | BLOCKED | 2025-12-06 | SPRINT_0212_0001_0001_web_i | BE-Base Platform Guild (src/Web/StellaOps.Web) | src/Web/StellaOps.Web | Implement `/exceptions` API (create, propose, approve, revoke, list, history) with validation, pagination, and audit logging. |  | Waiting on exception schema + policy scopes and audit requirements. |
+| WEB-EXC-25-001 | BLOCKED | 2025-12-06 | SPRINT_0212_0001_0001_web_i | BE-Base Platform Guild (src/Web/StellaOps.Web) | src/Web/StellaOps.Web | Implement `/exceptions` API (create, propose, approve, revoke, list, history) with validation, pagination, and audit logging. |  | Draft placeholder docs+sample added (`docs/api/console/exception-schema.md`, `docs/api/console/samples/exception-schema-sample.json`); awaiting official schema/scopes/audit rules. |
 | WEB-EXC-25-002 | BLOCKED | 2025-11-30 | SPRINT_0213_0001_0002_web_ii | BE-Base Platform Guild (src/Web/StellaOps.Web) | src/Web/StellaOps.Web | Extend `/policy/effective` and `/policy/simulate` responses to include exception metadata and accept overrides for simulations. Dependencies: WEB-EXC-25-001. |  |  |
 | WEB-EXC-25-003 | TODO |  | SPRINT_0213_0001_0002_web_ii | BE-Base Platform Guild, Platform Events Guild (src/Web/StellaOps.Web) | src/Web/StellaOps.Web | Publish `exception.*` events, integrate with notification hooks, enforce rate limits. Dependencies: WEB-EXC-25-002. |  |  |
 | WEB-EXPORT-35-001 | TODO |  | SPRINT_0213_0001_0002_web_ii | BE-Base Platform Guild (src/Web/StellaOps.Web) | src/Web/StellaOps.Web | Surface Export Center APIs (profiles/runs/download) through gateway with tenant scoping, streaming support, and viewer/operator scope checks. |  |  |