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docs/implplan/archived/2026-01-03-completed-sprints/COMPLETION_SUMMARY.md

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+# Sprint Completion Summary - 2026-01-03
+
+## SPRINT_20260103_001_FE - Filter Presets & Patch Map Explorer
+
+**Status:** ✅ COMPLETE (All 11 tasks)
+
+### Overview
+Implemented two UX polish features for the vulnerability explorer:
+1. **Filter Preset Pills** - Always-visible filter chips with URL synchronization for shareable filter states
+2. **Patch Map Explorer** - Interactive heatmap showing vendor backport coverage across fleet
+
+### Key Deliverables
+
+#### Filter Presets (4 tasks)
+- Extended `TriageFilters` with noise-gating fields (runtimeExecuted, environment, backportProved, semverMismatch)
+- Created 7 standard presets: actionable, prod-runtime, backport-verified, critical-only, needs-review, vex-applied, all-findings
+- `FilterUrlSyncService` for bidirectional URL synchronization
+- `FilterPresetPillsComponent` with horizontal scrolling and copy URL
+
+#### Patch Coverage Backend (3 tasks)
+- Added 3 interface methods to `IDeltaSignatureRepository`
+- Implemented PostgreSQL aggregation queries with CTEs
+- Created `PatchCoverageController` with 3 REST endpoints:
+  - `GET /api/v1/stats/patch-coverage` - Aggregated coverage by CVE
+  - `GET /api/v1/stats/patch-coverage/{cveId}/details` - Function-level breakdown
+  - `GET /api/v1/stats/patch-coverage/{cveId}/matches` - Paginated affected images
+
+#### Patch Map Frontend (4 tasks)
+- Created `patch-coverage.models.ts` and `patch-coverage.client.ts`
+- Created `PatchMapComponent` with heatmap, details, and matches views
+- Added route `/analyze/patch-map` and navigation entry
+- Linked from `binary-evidence-panel` header
+
+### Files Created
+| Location | Files |
+|----------|-------|
+| Frontend | `filter-preset.models.ts`, `filter-preset-pills.component.ts`, `filter-url-sync.service.ts`, `patch-coverage.models.ts`, `patch-coverage.client.ts`, `patch-map.component.ts` |
+| Backend | `PatchCoverageController.cs` |
+
+### Files Modified
+| File | Change |
+|------|--------|
+| `evidence-subgraph.models.ts` | Added noise-gating fields |
+| `app.routes.ts` | Added patch-map route |
+| `navigation.config.ts` | Added Patch Map nav entry |
+| `binary-evidence-panel.component.ts` | Added Patch Map link |
+| `IDeltaSignatureRepository.cs` | Added 3 methods + 6 DTOs |
+| `DeltaSignatureRepository.cs` | Implemented aggregation queries |
+| `BinaryIndex.WebService.csproj` | Added Persistence project reference |
+
+### Decisions
+- CSS Grid for heatmap (accessibility compliance)
+- Severity-based color coding (critical=red, high=orange, medium=yellow, low=blue, safe=green)
+
+### Build Status
+- Backend: ✅ Builds successfully (0 errors)
+- Frontend: ⚠️ Pre-existing errors in other components (not sprint-related)