semi implemented and features implemented save checkpoint

docs/features/unchecked/web/feed-mirror-airgap-ops-ui.md

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+# Feed Mirror & AirGap Ops UI
+
+## Module
+Web
+
+## Status
+IMPLEMENTED
+
+## Description
+Feed mirror ops UI with mirror registry list, snapshot management, AirGap import/export with bundle validation, feed version lock for deterministic scans, offline sync status, and bundle freshness warnings.
+
+## Implementation Details
+- **Feature directory**: `src/Web/StellaOps.Web/src/app/features/feed-mirror/`
+- **Routes**: `feed-mirror.routes.ts`
+- **Components**:
+  - `airgap-export` (`src/Web/StellaOps.Web/src/app/features/feed-mirror/airgap-export.component.ts`)
+  - `airgap-import` (`src/Web/StellaOps.Web/src/app/features/feed-mirror/airgap-import.component.ts`)
+  - `feed-mirror-dashboard` (`src/Web/StellaOps.Web/src/app/features/feed-mirror/feed-mirror-dashboard.component.ts`)
+  - `feed-mirror` (`src/Web/StellaOps.Web/src/app/features/feed-mirror/feed-mirror.component.ts`)
+  - `feed-version-lock` (`src/Web/StellaOps.Web/src/app/features/feed-mirror/feed-version-lock.component.ts`)
+  - `freshness-warnings` (`src/Web/StellaOps.Web/src/app/features/feed-mirror/freshness-warnings.component.ts`)
+  - `mirror-detail` (`src/Web/StellaOps.Web/src/app/features/feed-mirror/mirror-detail.component.ts`)
+  - `mirror-list` (`src/Web/StellaOps.Web/src/app/features/feed-mirror/mirror-list.component.ts`)
+  - `offline-sync-status` (`src/Web/StellaOps.Web/src/app/features/feed-mirror/offline-sync-status.component.ts`)
+  - `snapshot-actions` (`src/Web/StellaOps.Web/src/app/features/feed-mirror/snapshot-actions.component.ts`)
+  - `snapshot-selector` (`src/Web/StellaOps.Web/src/app/features/feed-mirror/snapshot-selector.component.ts`)
+  - `sync-status-indicator` (`src/Web/StellaOps.Web/src/app/features/feed-mirror/sync-status-indicator.component.ts`)
+  - `version-lock` (`src/Web/StellaOps.Web/src/app/features/feed-mirror/version-lock.component.ts`)
+- **Source**: SPRINT_20251229_020_FE_feed_mirror_airgap_ops_ui
+
+## E2E Test Plan
+- **Setup**:
+  - [ ] Log in with a user that has appropriate permissions
+  - [ ] Navigate to `/ops/feeds`
+  - [ ] 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)