semi implemented and features implemented save checkpoint

docs/features/unchecked/web/approvals-inbox-with-diff-first-presentation.md

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+# Approvals Inbox with Diff-First Presentation
+
+## Module
+Web
+
+## Status
+IMPLEMENTED
+
+## Description
+Approvals inbox showing pending approval requests with diff-first card design highlighting what changed, enabling quick triage of release promotion requests.
+
+## Implementation Details
+- **Feature directory**: `src/Web/StellaOps.Web/src/app/features/approvals/`
+- **Routes**: `approvals.routes.ts`
+- **Components**:
+  - `approval-detail-page` (`src/Web/StellaOps.Web/src/app/features/approvals/approval-detail-page.component.ts`)
+  - `approval-detail` (`src/Web/StellaOps.Web/src/app/features/approvals/approval-detail.component.ts`)
+  - `approvals-inbox-page` (`src/Web/StellaOps.Web/src/app/features/approvals/approvals-inbox-page.component.ts`)
+  - `approvals-inbox` (`src/Web/StellaOps.Web/src/app/features/approvals/approvals-inbox.component.ts`)
+  - `request-exception-modal` (`src/Web/StellaOps.Web/src/app/features/approvals/modals/request-exception-modal.component.ts`)
+- **Source**: SPRINT_20260118_005_FE_approvals_feature.md
+
+## E2E Test Plan
+- **Setup**:
+  - [ ] Log in with a user that has appropriate permissions
+  - [ ] Navigate to `/approvals`
+  - [ ] Ensure test data exists (scanned artifacts, SBOM data, or seed data as needed)
+- **Core verification**:
+  - [ ] Verify side-by-side comparison view renders correctly with two versions
+  - [ ] Verify additions, removals, and changes are visually highlighted
+  - [ ] Verify diff data matches the expected delta between versions
+- **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)