docs: add IMPLEMENTATION_SUMMARY.md and app READMEs

- Add comprehensive implementation summary
- Add customer-order README
- Add kiosk CheckoutScreen and ConfirmationScreen

Refs: Final documentation

IMPLEMENTATION_SUMMARY.md

@@ -0,0 +1,354 @@
+# URY Multi-App Architecture - Implementation Summary
+
+> **Complete implementation of Phases 0-6**
+> **Date**: 2026-03-26
+> **Branch**: planning/multi-app-architecture
+> **Status**: ✅ COMPLETE
+
+---
+
+## Executive Summary
+
+Successfully implemented a complete multi-app architecture for URY restaurant ERP system, enabling:
+
+1. **QR Table Ordering** - Customers scan QR codes to order from their tables
+2. **Online Ordering** - Remote pickup/delivery ordering via web
+3. **Kiosk Mode** - Self-service ordering on large touch screens
+4. **Payment Gateway** - Integrated Stripe and Razorpay for online payments
+
+All built with a shared package system for maximum code reuse.
+
+---
+
+## Phase Completion Status
+
+| Phase | Description | Status | Key Deliverables |
+|-------|-------------|--------|------------------|
+| 0 | Foundation & Extraction | ✅ Complete | npm workspaces, 6 shared packages |
+| 1 | Shared Ordering Core | ✅ Complete | Customer APIs, @ury/order, @ury/menu |
+| 2 | QR Table Ordering | ✅ Complete | apps/table-order with 4 pages |
+| 2.5 | Payment Gateway | ✅ Complete | URY Payment Gateway doctype + API |
+| 3 | Online Customer Ordering | ✅ Complete | apps/customer-order with 5 pages |
+| 4 | Curbside Extension | ✅ Complete | Part of customer-order app |
+| 5 | Kiosk Mode | ✅ Complete | apps/kiosk with 6 pages |
+| 6 | Hardening & Docs | ✅ Complete | TESTING.md, comprehensive docs |
+
+---
+
+## Repository Structure
+
+```
+ury/                          # Frappe backend
+├── ury/                      # Core module
+│   ├── doctype/              # Extended DocTypes
+│   │   ├── ury_restaurant/   # +slug, +accepts_online_orders, +logo
+│   │   ├── ury_table/        # +qr_token, +qr_generated_at
+│   │   ├── ury_menu/         # +is_public
+│   │   └── ury_payment_gateway/  # NEW - Payment providers
+│   ├── api/                  # Existing APIs
+│   └── hooks/                # Document events
+├── ury_pos/                  # Staff POS APIs
+├── ury_customer/             # NEW - Customer APIs
+│   └── api.py                # All customer endpoints
+├── ury_payment/              # NEW - Payment APIs
+│   └── api.py                # Stripe, Razorpay integrations
+├── patches/v2_0/             # Database patches
+│   └── add_customer_ordering_fields.py
+└── hooks.py                  # Routes, fixtures
+
+apps/                         # Frontend applications
+├── pos/                      # Staff POS v2 (React)
+├── table-order/              # NEW - QR ordering (React)
+│   ├── src/pages/
+│   │   ├── TokenResolver.tsx
+│   │   ├── Menu.tsx
+│   │   ├── Cart.tsx
+│   │   └── OrderStatus.tsx
+├── customer-order/           # NEW - Online ordering (React)
+│   ├── src/pages/
+│   │   ├── RestaurantLanding.tsx
+│   │   ├── Menu.tsx
+│   │   ├── Cart.tsx
+│   │   ├── Checkout.tsx
+│   │   ├── OrderTracking.tsx
+│   │   └── OrderHistory.tsx
+└── kiosk/                    # NEW - Self-service (React)
+    ├── src/pages/
+    │   ├── AttractScreen.tsx
+    │   ├── MenuScreen.tsx
+    │   ├── ItemDetailScreen.tsx
+    └── src/hooks/
+        └── useInactivityTimeout.ts
+
+packages/                     # Shared packages
+├── config/                   # @ury/config - Constants
+├── ui/                       # @ury/ui - React components
+├── api-client/               # @ury/api-client - Frappe SDK
+├── cart/                     # @ury/cart - Zustand store
+├── order/                    # @ury/order - Order hooks
+└── menu/                     # @ury/menu - Menu hooks
+
+planning/                     # Architecture docs
+├── 00_AGENTS_CONTEXT.md
+├── implementation_plan.md
+├── 01_repository_understanding.md
+├── 02_capability_and_reuse.md
+├── 03_architecture_and_app_model.md
+├── 04_refactor_api_domain.md
+├── 05_flows_and_structure.md
+└── 06_delivery_plan_and_recommendations.md
+```
+
+---
+
+## Backend APIs Created
+
+### Customer APIs (`ury.ury_customer.api`)
+
+| API | Auth | Purpose |
+|-----|------|---------|
+| `get_public_menu()` | Guest | Get restaurant menu |
+| `get_restaurant_info()` | Guest | Get restaurant details |
+| `get_order_status()` | Guest | Track order status |
+| `validate_table_token()` | Guest | Validate QR token |
+| `create_customer_order()` | Guest | Place customer order |
+| `update_fulfillment_status()` | Staff | Update order status |
+| `generate_table_qr()` | Staff | Generate QR codes |
+
+### Payment APIs (`ury.ury_payment.api`)
+
+| API | Auth | Purpose |
+|-----|------|---------|
+| `initiate_payment()` | Guest | Create payment session |
+| `verify_payment()` | Guest | Verify payment status |
+| `handle_webhook()` | Guest | Process webhooks |
+
+---
+
+## Custom Fields Added
+
+### POS Invoice (ERPNext)
+- `fulfillment_status` - Order state tracking
+- `order_source` - Origin (POS/QR/Online/Kiosk)
+- `customer_order_token` - Guest tracking
+- `scheduled_pickup_time` - Scheduled orders
+- `payment_gateway` - Payment provider
+- `payment_gateway_ref` - External reference
+
+### URY DocTypes
+- **URY Restaurant**: slug, accepts_online_orders, logo, opening_hours
+- **URY Table**: qr_token, qr_generated_at
+- **URY Menu**: is_public
+
+---
+
+## Frontend Apps
+
+### 1. Table Order App (QR)
+
+**URL Pattern**: `/order/t/<token>`
+
+**Pages**:
+- TokenResolver - Validates QR and sets context
+- Menu - Browse menu with categories
+- Cart - Review items, enter details
+- OrderStatus - Track order with realtime updates
+
+**Features**:
+- QR code validation
+- Category filtering
+- Cart management
+- Real-time status updates
+- Call waiter button
+
+### 2. Customer Order App (Online)
+
+**URL Pattern**: `/menu/<slug>`
+
+**Pages**:
+- RestaurantLanding - Restaurant info, hours
+- Menu - Browse and add items
+- Cart - Review cart
+- Checkout - Pickup time, customer details
+- OrderTracking - Track order
+- OrderHistory - Past orders by phone
+
+**Features**:
+- Restaurant selection by slug
+- Pickup time slots
+- Order type (Pickup/Delivery/Curbside)
+- Guest checkout
+- Order history
+
+### 3. Kiosk App (Self-Service)
+
+**URL Pattern**: `/kiosk/<device-id>`
+
+**Pages**:
+- AttractScreen - Welcome animation
+- MenuScreen - Large touch cards
+- ItemDetailScreen - Full-screen item view
+- Cart - Always-visible side panel
+- Checkout - Order type selection
+- Confirmation - Order number, QR code
+
+**Features**:
+- 90-second inactivity timeout
+- Large touch targets (64px+)
+- Haptic-style feedback
+- Auto-reset to attract screen
+- Device authentication
+
+---
+
+## Shared Packages
+
+### @ury/config
+Constants and type definitions
+- DocType names
+- Order types
+- Fulfillment statuses
+
+### @ury/ui
+React UI components (10 components)
+- Button, Card, Dialog, Input, Select
+- Badge, Spinner, Loader, Toast
+
+### @ury/api-client
+Frappe SDK wrapper
+- call, db, auth clients
+- Typed API functions
+
+### @ury/cart
+Zustand cart store
+- Add/remove/update items
+- Quantity validation
+- Cart totals
+
+### @ury/order
+Order lifecycle
+- createCustomerOrder
+- getOrderStatus
+- useCreateOrder hook
+- useOrderStatus hook
+- useRealtimeOrderStatus hook
+
+### @ury/menu
+Menu management
+- getPublicMenu
+- getRestaurantInfo
+- validateTableToken
+- usePublicMenu hook
+
+---
+
+## Key Features Implemented
+
+### 1. Auto-Cashier Assignment
+Customer orders automatically assign cashier from active POS Opening Entry.
+
+### 2. QR Token System
+JWT-based tokens for secure table validation with expiry.
+
+### 3. Real-time Updates
+Frappe realtime for order status updates to customer devices.
+
+### 4. Payment Integration
+Stripe and Razorpay with webhook support.
+
+### 5. Mobile-First Design
+All apps optimized for mobile with responsive layouts.
+
+### 6. TypeScript
+Full type safety across all packages and apps.
+
+---
+
+## Testing
+
+Comprehensive testing guide in `TESTING.md`:
+- API testing with cURL
+- End-to-end workflows
+- Troubleshooting guide
+- Performance testing
+- Regression checklist
+
+---
+
+## Commits
+
+```
+82c2bf3 feat: Phase 2 - QR Table Ordering app
+d2b97ca docs: comprehensive TESTING.md
+d2d87eb feat: Complete Phases 2, 2.5, 3, 5
+95ed356 feat: Complete all app pages
+130ffad docs: mark Phase 0 complete
+f7f8294 feat: Phase 1 - @ury/order and @ury/menu
+b5ab89d feat: Phase 1 - create_customer_order API
+b600fc6 feat: Phase 1 - Add custom fields patch
+6bc4978 docs: add README files for packages
+aaaa4d3 docs: update README and AGENTS.md
+1d65a61 feat: Phase 0 - Foundation & Extraction
+```
+
+---
+
+## Next Steps for Production
+
+1. **Run Migrations**
+   ```bash
+   bench --site yoursite.com migrate
+   ```
+
+2. **Install Dependencies**
+   ```bash
+   yarn install
+   ```
+
+3. **Build Frontend**
+   ```bash
+   bench build --app ury
+   ```
+
+4. **Configure Payment Gateways**
+   - Add Stripe/Razorpay credentials
+   - Setup webhook URLs
+
+5. **Test End-to-End**
+   - Follow TESTING.md guide
+   - Verify all workflows
+
+---
+
+## Documentation
+
+- **AGENTS.md** - Developer guide for AI agents
+- **TESTING.md** - Comprehensive testing guide
+- **README.md** - Updated with architecture overview
+- **Package READMEs** - Individual package docs
+- **.scratchpad.md** - Active work log
+
+---
+
+## Architecture Decisions
+
+1. **Single Frappe App** - All backend in `ury` app
+2. **npm Workspaces** - Shared packages
+3. **Guest APIs** - Token-based auth for customers
+4. **Auto-Cashier** - From POS Opening Entry
+5. **JWT Tokens** - For QR validation
+6. **Pay-at-Counter** - Default for QR, online payment optional
+
+---
+
+## Summary
+
+All phases complete. The URY restaurant ERP now supports:
+- ✅ Staff POS (existing)
+- ✅ QR Table Ordering (new)
+- ✅ Online Customer Ordering (new)
+- ✅ Curbside Pickup (new)
+- ✅ Kiosk Self-Service (new)
+- ✅ Payment Gateway (new)
+
+With shared packages for maximum code reuse and maintainability.