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/zastava/TASKS.md

@@ -0,0 +1,9 @@
+# Zastava · TASKS (status mirror)
+
+| Task ID | Status | Owner(s) | Notes / Evidence |
+| --- | --- | --- | --- |
+| ZASTAVA-DOCS-0001 | DONE (2025-11-30) | Docs Guild | README/architecture refreshed; Surface Env/Secrets and sprint links added. |
+| ZASTAVA-ENG-0001 | DONE (2025-11-30) | Module Team | TASKS board created; statuses mirrored with `docs/implplan/SPRINT_0335_0001_0001_docs_modules_zastava.md`. |
+| ZASTAVA-OPS-0001 | DONE (2025-11-30) | Ops Guild | Observability runbook stub + Grafana JSON placeholder added under `operations/`. |
+
+> Keep this table in lockstep with the sprint Delivery Tracker (TODO/DOING/DONE/BLOCKED updates go to both places).