1. Fix TypeError in run history: fetchValidationRuns now correctly
destructures .runs from paginated API response {runs, total, offset}
2. Fix assertions panel rendering: inline fetch calls in loadMissionDetail
and toggleMilestoneExpanded to avoid forward-reference of callback hooks.
Added Array.isArray guard to prevent .map on undefined state values.
3. Add missing UI components:
- Clickable lineage indicator for fix features (navigates to source)
- Retry budget 'Attempt X of Y' display on feature cards
- 'No fix features generated' empty state
- Milestone validation state badge in header (already existed, now
loads correctly)
- Validation rollup badge with coverage bar in milestone header
Co-authored-by: factory-droid[bot] <138933559+factory-droid[bot]@users.noreply.github.com>
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