diff --git a/docs/implementation-gaps.md b/docs/implementation-gaps.md
index b93d12c..b2b716b 100644
--- a/docs/implementation-gaps.md
+++ b/docs/implementation-gaps.md
@@ -28,13 +28,42 @@ This document identifies features specified in the documentation that are not ye
 - ✅ **Password Reset Flow**: Secure token-based password reset with Mailgun email service
 - ✅ **Email Verification System**: Full email verification with token validation and rate limiting
 - ✅ **Email Service Integration**: Mailgun API integration with templated emails
+- ✅ **Multi-Factor Authentication (MFA)**: TOTP and Email-based MFA with backup codes
+- ✅ **Biometric Authentication**: Full WebAuthn/FIDO2 implementation for Face ID/Touch ID
+- ✅ **Session Management**: Complete session tracking and revocation system
+- ✅ **Device Trust Management**: Device registry with trust/revoke capabilities
+- ✅ **Offline-First Redux Architecture**: Complete offline support with sync queue, optimistic updates, and conflict resolution
+- ✅ **Daily Summary Dashboard** (October 2, 2025): Real-time activity counts with proper calculation for feeding, sleep, diaper, and medication tracking
+- ✅ **Activities History Page** (October 2, 2025): Chronological view of last 7 days of activities with smart timestamps and color-coded icons
+- ✅ **Sleep Duration Tracking** (October 2, 2025): Proper start/end time tracking with automatic duration calculation in daily summary
 
 ### Key Gaps Identified
-- **Backend**: 42 features not implemented (12 completed ✅)
-- **Frontend**: 36 features not implemented (2 completed ✅)
+- **Backend**: 35 features not implemented (19 completed ✅)
+- **Frontend**: 29 features not implemented (9 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
+3. **Redux Persist** - State persistence across page reloads (dependencies installed but not configured)
+4. **Accessibility** - Screen reader support, keyboard navigation, WCAG AA compliance
+
+**High Priority (Pre-Launch)**:
+1. **Real-Time Sync** - WebSocket room management for family activity sync
+2. **AI Safety** - Medical disclaimer triggers, response moderation
+3. **LangChain Context Management** - Token budget management, conversation memory
+4. **Localization** - i18n setup for 5 languages (en, es, fr, pt, zh)
+5. **Security Hardening** - CORS configuration, comprehensive input validation, XSS headers
+
+**Medium Priority (Post-Launch)**:
+1. **GraphQL API** - Complex queries for dashboard optimization
+2. **Voice Processing** - Whisper API integration, multi-language voice recognition
+3. **Analytics & Predictions** - Pattern detection, ML-based next event predictions
+4. **PWA Features** - Service worker configuration, offline pages, install prompts
+
 ---
 
 ## 1. Backend API Implementation Gaps
@@ -43,33 +72,38 @@ This document identifies features specified in the documentation that are not ye
 
 **Source**: `maternal-app-api-spec.md`, `maternal-app-env-config.md`
 
-#### Missing Features
+#### Completed Features ✅
 
-1. **Multi-Factor Authentication (MFA)**
-   - Status: Not implemented
-   - Current: Basic JWT authentication only
-   - Needed: MFA support with TOTP/SMS for enhanced security
+1. **Multi-Factor Authentication (MFA)** ✅ COMPLETED
+   - Status: **IMPLEMENTED**
+   - 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
+   - 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
    - Priority: High
    - Impact: Security enhancement for sensitive child data
 
-2. **Biometric Authentication Integration**
-   - Status: Not implemented
-   - Current: Password-only login
-   - Needed: Face ID / Touch ID / Fingerprint support
+2. **Biometric Authentication Integration** ✅ COMPLETED
+   - Status: **IMPLEMENTED**
+   - Current: Full WebAuthn/FIDO2 biometric authentication
+   - Implemented: WebAuthn registration/verification, biometric authentication, credential management (list/delete/update), BiometricAuthService with complete flow
+   - 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
    - Priority: High
    - Impact: Better UX for mobile, reduces login friction
 
-3. **Device Trust Management UI**
-   - Status: Partial (backend exists)
-   - Current: Device fingerprinting stored but no management
-   - Needed: API endpoints to view/revoke trusted devices
+3. **Device Trust Management** ✅ COMPLETED
+   - Status: **IMPLEMENTED** (Backend 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
+   - Endpoints: GET /devices, GET /devices/trusted, GET /devices/count, POST /devices/:id/trust, DELETE /devices/:id/trust, DELETE /devices/:id, DELETE /devices
    - Priority: Medium
    - Impact: Security and multi-device management
+   - Note: Frontend UI not yet implemented
 
-4. **Session Management Endpoints**
-   - Status: Not implemented
-   - Current: No way to view active sessions
-   - Needed: GET /api/v1/auth/sessions, DELETE /api/v1/auth/sessions/:id
+4. **Session Management Endpoints** ✅ COMPLETED
+   - Status: **IMPLEMENTED**
+   - Current: Complete session management system
+   - Implemented: Get all sessions, session count, revoke single session, revoke all sessions, SessionService with token tracking
+   - Endpoints: GET /sessions, GET /sessions/count, DELETE /sessions/:id, DELETE /sessions
    - Priority: Medium
    - Impact: Security control for users
 
@@ -372,45 +406,54 @@ This document identifies features specified in the documentation that are not ye
 
 **Source**: `maternal-app-state-management.md`
 
-1. **Redux Toolkit Offline Support**
-   - Status: Redux installed but offline middleware missing
-   - Current: Basic Redux store
-   - Needed: redux-offline, sync queue, conflict resolution
+#### Completed Features ✅
+
+1. **Redux Toolkit Offline Support** ✅ COMPLETED
+   - Status: **IMPLEMENTED**
+   - Current: Full offline-first architecture with custom middleware
+   - Implemented: offlineMiddleware for action queuing, syncMiddleware for auto-sync, network detection (browser events + periodic /api/health checks), pendingActions queue with retry logic (max 5 retries)
+   - Files: store/middleware/offlineMiddleware.ts, store/middleware/syncMiddleware.ts, store/slices/offlineSlice.ts
    - Priority: High
    - Impact: Core offline-first requirement
 
-2. **Normalized State Shape**
-   - Status: Not implemented
-   - Current: Direct API response storage
-   - Needed: Entities with byId/allIds structure
+2. **Normalized State Shape** ✅ COMPLETED
+   - Status: **IMPLEMENTED**
+   - Current: Redux Toolkit EntityAdapter with normalized structure
+   - Implemented: createEntityAdapter for activities, byId/allIds structure, automatic sorting by timestamp, efficient lookups
+   - Files: store/slices/activitiesSlice.ts
    - Priority: High
    - Impact: Performance and data consistency
 
-3. **Optimistic Updates**
-   - Status: Not implemented
-   - Current: Wait for server response
-   - Needed: Immediate UI updates with rollback
+3. **Optimistic Updates** ✅ COMPLETED
+   - Status: **IMPLEMENTED**
+   - Current: Full optimistic update system with rollback
+   - Implemented: optimisticCreate/Update/Delete actions, automatic rollback on API failure, _optimistic flag tracking, _version tracking for conflict detection
+   - Files: store/slices/activitiesSlice.ts (lines 117-153)
    - Priority: High
    - Impact: Perceived performance
 
-4. **Sync Middleware**
-   - Status: Not implemented
-   - Current: No sync queue
-   - Needed: Queue offline actions, process when online
+4. **Sync Middleware** ✅ COMPLETED
+   - Status: **IMPLEMENTED**
+   - Current: Automatic sync when connection restored
+   - Implemented: syncMiddleware processes pending actions sequentially, exponential retry logic, sync status tracking (idle/syncing/synced/error)
+   - Files: store/middleware/syncMiddleware.ts
    - Priority: High
    - Impact: Offline functionality
 
-5. **Conflict Resolution Strategy**
-   - Status: Not implemented
-   - Current: Last write only
-   - Needed: Version-based merge, user confirmation
+5. **Conflict Resolution Strategy** ✅ COMPLETED
+   - Status: **IMPLEMENTED**
+   - Current: Multiple conflict resolution strategies
+   - Implemented: 4 strategies (SERVER_WINS, CLIENT_WINS, LAST_WRITE_WINS, MERGE), version-based conflict detection, timestamp comparison, hasConflict() helper
+   - Files: store/middleware/syncMiddleware.ts (lines 72-129)
    - Priority: Medium
    - Impact: Data integrity in multi-user scenarios
 
+#### Remaining Features
+
 6. **Redux Persist Configuration**
-   - Status: redux-persist installed but not configured
-   - Current: No persistence
-   - Needed: Persist auth, activities, children slices
+   - Status: Not configured
+   - Current: State lost on page reload
+   - Needed: Persist auth, activities, children, offline slices to localStorage
    - Priority: High
    - Impact: App state across restarts
 
@@ -1145,11 +1188,11 @@ This document identifies features specified in the documentation that are not ye
 ### Summary Statistics
 
 - **Total Gaps Identified**: 120 features
-  - **Completed**: 17 features ✅ (14.2%)
-  - **Remaining**: 103 features
-- **Critical Priority**: 18 features (2 completed ✅)
-- **High Priority**: 35 features (11 completed ✅)
-- **Medium Priority**: 42 features (4 completed ✅)
+  - **Completed**: 30 features ✅ (25%)
+  - **Remaining**: 90 features
+- **Critical Priority**: 18 features (8 completed ✅)
+- **High Priority**: 35 features (16 completed ✅)
+- **Medium Priority**: 42 features (6 completed ✅)
 - **Low Priority**: 25 features (0 completed)
 
 ### Key Observations
@@ -1168,8 +1211,16 @@ This document identifies features specified in the documentation that are not ye
    - Loading states with 15+ skeleton components
    - Password reset and email verification flows
    - Email service with Mailgun integration
+   - Multi-Factor Authentication (TOTP + Email)
+   - Biometric authentication (WebAuthn/FIDO2)
+   - Session management with revocation
+   - Device trust management system
+   - **Offline-first Redux architecture** (sync queue, optimistic updates, conflict resolution)
+   - **Daily summary dashboard** (October 2): Real activity counts with medicine tracker
+   - **Activities history page** (October 2): 7-day activity timeline view
+   - **Sleep duration tracking** (October 2): Automatic duration calculation from start/end times
 
-3. **Missing Critical Features**: Offline-first functionality, password reset, email verification, and remaining compliance features are the most critical gaps.
+3. **Missing Critical Features**: Compliance features (COPPA/GDPR) and testing are the most critical remaining gaps.
 
 4. **AI Needs Work**: The AI module exists but lacks safety features, context management, and multi-language support.
 
@@ -1177,15 +1228,15 @@ This document identifies features specified in the documentation that are not ye
 
 6. **Accessibility Gaps**: No evidence of accessibility testing or screen reader support.
 
-7. **Security Hardening**: Basic authentication exists, error handling improved ✅, rate limiting implemented ✅, prompt injection protection added ✅, but still lacks MFA and comprehensive validation.
+7. **Security Hardening**: Strong authentication system ✅ (MFA, biometric, session management, device trust), error handling improved ✅, rate limiting implemented ✅, prompt injection protection added ✅, but still needs comprehensive input validation and CORS configuration.
 
 ### Next Steps
 
-1. **Prioritize offline-first implementation** - This is documented as a core requirement but not implemented
-2. **Add error handling and logging** - Critical for production debugging
-3. **Implement compliance features** - Legal requirement for launch
-4. **Write tests** - Critical for code quality and maintainability
-5. **Add accessibility features** - Legal requirement and good practice
+1. **Implement compliance features** - Legal requirement for launch (COPPA/GDPR data export/deletion, consent management)
+2. **Write tests** - Critical for code quality and maintainability (currently 0% coverage, target 80%)
+3. **Add accessibility features** - Legal requirement and good practice (WCAG AA compliance, screen readers, keyboard nav)
+4. **Configure Redux Persist** - State persistence across page reloads (dependencies installed but not configured)
+5. **Frontend UI for auth features** - Backend complete for MFA/biometric/sessions/devices, need user-facing UI
 
 ### Documentation Quality