docs: Mark all Frontend Settings UIs as completed

Updated implementation-gaps.md to reflect completed Frontend UI components:

Frontend Settings UI (✅ COMPLETED - 1,748 total lines):
1. MFASettings.tsx (386 lines) - TOTP with QR code, Email MFA, backup codes
2. BiometricSettings.tsx (406 lines) - WebAuthn/FIDO2, Face ID/Touch ID/Fingerprint
3. SessionsManagement.tsx (278 lines) - List sessions, device info, revoke controls
4. DeviceTrustManagement.tsx (340 lines) - List devices, trust/untrust, remove
5. DataExport.tsx (71 lines) - One-click GDPR data download
6. AccountDeletion.tsx (267 lines) - Request/cancel deletion, 30-day grace period

Settings Page (app/settings/page.tsx - 333 lines):
- Integrates all 6 components with animated sections
- Profile settings, notification preferences
- Complete security and compliance controls

Updated entries:
- MFA: Backend + Frontend complete
- Biometric Auth: Backend + Frontend complete
- Sessions: Backend + Frontend complete
- Devices: Backend + Frontend complete
- Data Export: Backend + Frontend complete
- Account Deletion: Backend + Frontend complete

Updated summary statistics:
- 43/120 features completed (36%, up from 31%)
- 25/35 high-priority features completed (71%)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

docs/implementation-gaps.md

@@ -39,15 +39,15 @@ This document identifies features specified in the documentation that are not ye
 
 ### Key Gaps Identified
 - **Backend**: 35 features not implemented (19 completed ✅)
-- **Frontend**: 29 features not implemented (9 completed ✅)
+- **Frontend**: 29 features not implemented (15 completed ✅)
 - **Infrastructure**: 18 features not implemented (3 completed ✅)
 - **Testing**: 15 features not implemented
 
 ### Top Priority Remaining Features
 
 **Critical (Must Fix Before Launch)**:
-1. **Testing Foundation** - 0% test coverage, need 80%+ unit tests and integration tests
-2. **COPPA/GDPR Compliance** - Data export API, account deletion workflow, consent management
+1. **Testing Foundation** - ~1% test coverage (AI Safety only), need 80%+ unit tests and integration tests
+2. ~~**COPPA/GDPR Compliance**~~ - ✅ COMPLETED (Data export API, account deletion workflow, consent management, age verification)
 3. **Redux Persist** - State persistence across page reloads (dependencies installed but not configured)
 4. **Accessibility** - Screen reader support, keyboard navigation, WCAG AA compliance
 
@@ -75,35 +75,46 @@ This document identifies features specified in the documentation that are not ye
 #### Completed Features ✅
 
 1. **Multi-Factor Authentication (MFA)** ✅ COMPLETED
-   - Status: **IMPLEMENTED**
+   - Status: **IMPLEMENTED** (Backend + Frontend complete)
    - Current: Full MFA system with TOTP and Email-based authentication
-   - Implemented: MFA status endpoint, TOTP setup/enable/disable, Email MFA setup/send-code/verify, backup codes generation/regeneration, MFAService with complete flow
+   - Implemented:
+     * Backend: MFA status endpoint, TOTP setup/enable/disable, Email MFA setup/send-code/verify, backup codes generation/regeneration, MFAService with complete flow
+     * Frontend: MFASettings component (386 lines) - TOTP setup with QR code, Email MFA setup, backup codes, enable/disable dialogs
    - Endpoints: GET /mfa/status, POST /mfa/totp/setup, POST /mfa/totp/enable, POST /mfa/email/setup, POST /mfa/email/send-code, POST /mfa/verify, DELETE /mfa, POST /mfa/backup-codes/regenerate
+   - Files: components/settings/MFASettings.tsx, app/settings/page.tsx (lines 232-234)
    - Priority: High
    - Impact: Security enhancement for sensitive child data
 
 2. **Biometric Authentication Integration** ✅ COMPLETED
-   - Status: **IMPLEMENTED**
+   - Status: **IMPLEMENTED** (Backend + Frontend complete)
    - Current: Full WebAuthn/FIDO2 biometric authentication
-   - Implemented: WebAuthn registration/verification, biometric authentication, credential management (list/delete/update), BiometricAuthService with complete flow
+   - Implemented:
+     * Backend: WebAuthn registration/verification, biometric authentication, credential management (list/delete/update), BiometricAuthService with complete flow
+     * Frontend: BiometricSettings component (406 lines) - WebAuthn registration, credential management, platform authenticator detection, Face ID/Touch ID/Fingerprint support
    - Endpoints: POST /biometric/register/options, POST /biometric/register/verify, POST /biometric/authenticate/options, POST /biometric/authenticate/verify, GET /biometric/credentials, DELETE /biometric/credentials/:id, PATCH /biometric/credentials/:id, GET /biometric/has-credentials
+   - Files: components/settings/BiometricSettings.tsx, app/settings/page.tsx (lines 265-267)
    - Priority: High
    - Impact: Better UX for mobile, reduces login friction
 
 3. **Device Trust Management** ✅ COMPLETED
-   - Status: **IMPLEMENTED** (Backend complete)
+   - Status: **IMPLEMENTED** (Backend + Frontend complete)
    - Current: Full device registry and trust management system
-   - Implemented: Get all devices, get trusted devices, device count, trust/revoke device trust, remove devices, DeviceTrustService with complete API
+   - Implemented:
+     * Backend: Get all devices, get trusted devices, device count, trust/revoke device trust, remove devices, DeviceTrustService with complete API
+     * Frontend: DeviceTrustManagement component (340 lines) - list devices, trust/untrust, remove, device fingerprinting display
    - Endpoints: GET /devices, GET /devices/trusted, GET /devices/count, POST /devices/:id/trust, DELETE /devices/:id/trust, DELETE /devices/:id, DELETE /devices
+   - Files: components/settings/DeviceTrustManagement.tsx, app/settings/page.tsx (lines 254-256)
    - Priority: Medium
    - Impact: Security and multi-device management
-   - Note: Frontend UI not yet implemented
 
 4. **Session Management Endpoints** ✅ COMPLETED
-   - Status: **IMPLEMENTED**
+   - Status: **IMPLEMENTED** (Backend + Frontend complete)
    - Current: Complete session management system
-   - Implemented: Get all sessions, session count, revoke single session, revoke all sessions, SessionService with token tracking
+   - Implemented:
+     * Backend: Get all sessions, session count, revoke single session, revoke all sessions, SessionService with token tracking
+     * Frontend: SessionsManagement component (278 lines) - list active sessions, device info display, revoke individual/all sessions
    - Endpoints: GET /sessions, GET /sessions/count, DELETE /sessions/:id, DELETE /sessions
+   - Files: components/settings/SessionsManagement.tsx, app/settings/page.tsx (lines 243-245)
    - Priority: Medium
    - Impact: Security control for users
 
@@ -921,31 +932,31 @@ This document identifies features specified in the documentation that are not ye
 #### Completed Features ✅
 
 1. **Data Export** ✅ COMPLETED (October 2025)
-   - Status: **IMPLEMENTED**
+   - Status: **IMPLEMENTED** (Backend + Frontend complete)
    - Current: Full GDPR-compliant data export system
    - Implemented:
-     * Endpoint: `GET /compliance/data-export`
-     * Exports: User profile, families, children, activities, AI conversations, photos, audit logs (last 1000)
-     * Format: JSON with export metadata (timestamp, version)
-     * Returns downloadable JSON file with Content-Disposition header
-   - Files: compliance.controller.ts (lines 25-38), compliance.service.ts (lines 46-181)
+     * Backend: `GET /compliance/data-export` endpoint, exports user profile, families, children, activities, AI conversations, photos, audit logs (last 1000), JSON format with export metadata
+     * Frontend: DataExport component (71 lines) - one-click data download, GDPR compliance notice, success/error feedback
+   - Files:
+     * Backend: compliance.controller.ts (lines 25-38), compliance.service.ts (lines 46-181)
+     * Frontend: components/settings/DataExport.tsx, app/settings/page.tsx (lines 276-278)
    - Priority: High
    - Impact: GDPR right to data portability
 
 2. **Right to Deletion** ✅ COMPLETED (October 2025)
-   - Status: **IMPLEMENTED**
+   - Status: **IMPLEMENTED** (Backend + Frontend complete)
    - Current: Full account deletion workflow with 30-day grace period
    - Implemented:
-     * Endpoints:
+     * Backend: Request/cancel/status endpoints, 30-day grace period, scheduled cron job (daily at 2 AM), cascade deletion (activities, photos, children, AI conversations, family memberships), audit log anonymization
+     * Frontend: AccountDeletion component (267 lines) - request deletion dialog, cancel deletion, status display with countdown, warning dialogs
+   - Endpoints:
        - `POST /compliance/request-deletion` - Request deletion
        - `POST /compliance/cancel-deletion` - Cancel pending deletion
        - `GET /compliance/deletion-status` - Check status
-     * 30-day grace period before permanent deletion
-     * Scheduled cron job runs daily at 2 AM (DeletionSchedulerService)
-     * Cascade deletion: activities, photos, children, AI conversations, family memberships
-     * Audit log anonymization (userId set to null)
    - Database: V015_create_deletion_requests.sql creates `deletion_requests` table
-   - Files: deletion-scheduler.service.ts, compliance.service.ts (lines 183-354)
+   - Files:
+     * Backend: deletion-scheduler.service.ts, compliance.service.ts (lines 183-354)
+     * Frontend: components/settings/AccountDeletion.tsx, app/settings/page.tsx (lines 287-289)
    - Priority: High
    - Impact: GDPR right to erasure
 
@@ -1254,10 +1265,10 @@ This document identifies features specified in the documentation that are not ye
 ### Summary Statistics
 
 - **Total Gaps Identified**: 120 features
-  - **Completed**: 37 features ✅ (31%)
-  - **Remaining**: 83 features
+  - **Completed**: 43 features ✅ (36%)
+  - **Remaining**: 77 features
 - **Critical Priority**: 18 features (12 completed ✅)
-- **High Priority**: 35 features (19 completed ✅)
+- **High Priority**: 35 features (25 completed ✅)
 - **Medium Priority**: 42 features (6 completed ✅)
 - **Low Priority**: 25 features (0 completed)
 
@@ -1288,6 +1299,7 @@ This document identifies features specified in the documentation that are not ye
    - **AI Safety Features** (October 2): Comprehensive safety system with 93 keywords, rate limiting, abuse prevention
    - **COPPA/GDPR Compliance** (October 2): Data export, account deletion, age verification, consent management
    - **Redux Persist** (October 2): Full state persistence with localStorage, PersistGate integration
+   - **Security Settings UI** (October 2): 1,748 lines - MFA, biometric auth, sessions, devices, data export, account deletion (6 components)
 
 3. **Missing Critical Features**: Testing infrastructure is the most critical remaining gap (0% coverage, target 80%).
 
@@ -1303,10 +1315,9 @@ This document identifies features specified in the documentation that are not ye
 
 1. ~~**Implement compliance features**~~ - ✅ COMPLETED (COPPA/GDPR data export/deletion, consent management, age verification)
 2. ~~**Configure Redux Persist**~~ - ✅ COMPLETED (State persists with localStorage, PersistGate integration)
-3. **Write tests** - Critical for code quality and maintainability (currently ~1% coverage with AI Safety tests, target 80%)
-4. **Add accessibility features** - Legal requirement and good practice (WCAG AA compliance, screen readers, keyboard nav)
-5. **Frontend UI for auth features** - Backend complete for MFA/biometric/sessions/devices, need user-facing UI
-6. **Frontend UI for compliance** - Backend complete for data export/deletion, need Settings UI
+3. ~~**Frontend UI for auth/compliance features**~~ - ✅ COMPLETED (MFA, biometric, sessions, devices, data export, account deletion - 1,748 lines)
+4. **Write tests** - Critical for code quality and maintainability (currently ~1% coverage with AI Safety tests, target 80%)
+5. **Add accessibility features** - Legal requirement and good practice (WCAG AA compliance, screen readers, keyboard nav)
 
 ### Documentation Quality