semi implemented and features implemented save checkpoint

docs/features/unchecked/web/unknowns-tracking-ui.md

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+# Unknowns Tracking UI
+
+## Module
+Web
+
+## Status
+IMPLEMENTED
+
+## Description
+Unknowns tracking UI with component list showing confidence scores, identification candidates, manual resolution workflow, fingerprint matching, and SBOM completeness impact analysis.
+
+## Implementation Details
+- **Feature directory**: `src/Web/StellaOps.Web/src/app/features/unknowns-tracking/`
+- **Routes**: `unknowns.routes.ts`
+- **Components**:
+  - `determinization-review` (`src/Web/StellaOps.Web/src/app/features/unknowns-tracking/determinization-review.component.ts`)
+  - `grey-queue-dashboard` (`src/Web/StellaOps.Web/src/app/features/unknowns-tracking/grey-queue-dashboard.component.ts`)
+  - `unknown-detail` (`src/Web/StellaOps.Web/src/app/features/unknowns-tracking/unknown-detail.component.ts`)
+  - `unknowns-dashboard` (`src/Web/StellaOps.Web/src/app/features/unknowns-tracking/unknowns-dashboard.component.ts`)
+- **Source**: SPRINT_20251229_033_FE_unknowns_tracking_ui
+
+## E2E Test Plan
+- **Setup**:
+  - [ ] Log in with a user that has appropriate permissions
+  - [ ] Navigate to `/analyze/unknowns`
+  - [ ] Ensure test data exists (scanned artifacts, SBOM data, or seed data as needed)
+- **Core verification**:
+  - [ ] Verify the component renders correctly with sample data
+  - [ ] Verify interactive elements respond to user input
+  - [ ] Verify data is fetched and displayed from the correct API endpoints
+- **Edge cases**:
+  - [ ] Verify graceful handling when backend API is unavailable (error state)
+  - [ ] Verify responsive layout at different viewport sizes
+  - [ ] Verify accessibility (keyboard navigation, screen reader labels, ARIA attributes)