feat: Implement Filesystem and MongoDB provenance writers for PackRun execution context

- Added `FilesystemPackRunProvenanceWriter` to write provenance manifests to the filesystem.
- Introduced `MongoPackRunArtifactReader` to read artifacts from MongoDB.
- Created `MongoPackRunProvenanceWriter` to store provenance manifests in MongoDB.
- Developed unit tests for filesystem and MongoDB provenance writers.
- Established `ITimelineEventStore` and `ITimelineIngestionService` interfaces for timeline event handling.
- Implemented `TimelineIngestionService` to validate and persist timeline events with hashing.
- Created PostgreSQL schema and migration scripts for timeline indexing.
- Added dependency injection support for timeline indexer services.
- Developed tests for timeline ingestion and schema validation.

docs/modules/vuln-explorer/implementation_plan.md

@@ -68,3 +68,8 @@
 - Services, UI/CLI, integrations, exports, and observability deployed with runbooks and Offline Kit parity.
 - Documentation suite (overview, using-console, API, CLI, findings ledger, policy mapping, VEX/SBOM integration, telemetry, security, runbooks, install) updated with imposed rule statement.
 - ./TASKS.md and ../../TASKS.md reflect active progress; compliance checklists appended where required.
+
+## Sprint alignment (2025-11-30)
+- Docs refresh tracked in `docs/implplan/SPRINT_0334_0001_0001_docs_modules_vuln_explorer.md` (Docs/OPS/ENG streams).
+- Observability runbook evidence lives under `runbooks/observability.md` with stub dashboard JSON for offline demos.
+- API/OpenAPI references: `api.md` and `openapi/vuln-explorer.v1.yaml` are the current contract drafts; keep Console/CLI generators synced to these.