- Added `/concelier/advisories/{vulnerabilityKey}/replay` endpoint to return conflict summaries and explainers.
- Introduced `MergeConflictExplainerPayload` to structure conflict details including type, reason, and source rankings.
- Enhanced `MergeConflictSummary` to include structured explainer payloads and hashes for persisted conflicts.
- Updated `MirrorEndpointExtensions` to enforce rate limits and cache headers for mirror distribution endpoints.
- Refactored tests to cover new replay endpoint functionality and validate conflict explainers.
- Documented changes in TASKS.md, noting completion of mirror distribution endpoints and updated operational runbook.
