feat: add customer profile, VAT alignment, and fix shop auth

Customer Profile:
- Add profile API (GET/PUT /api/v1/shop/profile)
- Add password change endpoint (PUT /api/v1/shop/profile/password)
- Implement full profile page with preferences and password sections
- Add CustomerPasswordChange schema

Shop Authentication Fixes:
- Add Authorization header to all shop account API calls
- Fix orders, order-detail, messages pages authentication
- Add proper redirect to login on 401 responses
- Fix toast message showing noqa comment in shop-layout.js

VAT Calculation:
- Add shared VAT utility (app/utils/vat.py)
- Add VAT fields to Order model (vat_regime, vat_rate, etc.)
- Align order VAT calculation with invoice settings
- Add migration for VAT fields on orders

Validation Framework:
- Fix base_validator.py with missing methods
- Add validate_file, output_results, get_exit_code methods
- Fix validate_all.py import issues

Documentation:
- Add launch-readiness.md tracking OMS status
- Update to 95% feature complete

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

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

docs/deployment/launch-readiness.md

@@ -0,0 +1,220 @@
+# OMS Launch Readiness Analysis
+
+This document tracks the launch readiness status of the Order Management System (OMS).
+
+**Last Updated:** 2026-01-02
+**Overall Status:** 95% Feature Complete
+
+---
+
+## Executive Summary
+
+The OMS is nearly production ready with core order processing, invoicing, inventory management, and customer account features complete. Recent updates have added customer profile management, multiple address support, and fixed frontend authentication across all shop account pages.
+
+---
+
+## Feature Completion Status
+
+### Core Order Processing (95% Complete)
+
+| Feature | Status | Notes |
+|---------|--------|-------|
+| Order creation from shop | Complete | Full checkout flow |
+| Order list/detail (vendor) | Complete | With filtering, search |
+| Order status management | Complete | Full status workflow |
+| Customer stats update | Complete | Updates on order placement |
+| Cart clearing on order | Complete | Clears after successful order |
+| Order confirmation email | Complete | Template-based emails |
+| VAT calculation | Complete | Aligned with invoice logic |
+
+### Invoicing System (95% Complete)
+
+| Feature | Status | Notes |
+|---------|--------|-------|
+| Invoice generation | Complete | Auto from orders |
+| PDF generation | Complete | WeasyPrint |
+| Invoice settings | Complete | Per-vendor config |
+| VAT regimes | Complete | Domestic, OSS, reverse charge, exempt |
+| Customer invoice download | Complete | Shop order detail page |
+
+### Shop Frontend (95% Complete)
+
+| Feature | Status | Notes |
+|---------|--------|-------|
+| Order history | Complete | Customer order list |
+| Order detail page | Complete | With VAT breakdown, timeline |
+| Invoice download | Complete | PDF download button |
+| Order tracking timeline | Complete | Visual status progression |
+| Product catalog | Complete | With search, filters |
+| Shopping cart | Complete | Full cart functionality |
+| Checkout flow | Complete | Address, payment selection |
+| Customer registration | Complete | Email-based |
+| Customer login | Complete | JWT authentication |
+| Password reset | Partial | Email sending TODO |
+| Customer profile | Complete | Full profile management |
+| Customer addresses | Complete | Multiple addresses, address book |
+| Customer messages | Complete | Conversation-based messaging |
+
+### Vendor Dashboard (90% Complete)
+
+| Feature | Status | Notes |
+|---------|--------|-------|
+| Order management | Complete | List, detail, status |
+| Invoice management | Complete | Create, view, PDF |
+| Product management | Complete | CRUD, images |
+| Inventory management | Complete | Stock levels |
+| Customer list | Complete | View, filter |
+| Analytics | Partial | Basic stats |
+| Shipping integration | Partial | Manual only |
+| Returns/refunds | Not Started | Future feature |
+
+### Admin Dashboard (90% Complete)
+
+| Feature | Status | Notes |
+|---------|--------|-------|
+| Vendor management | Complete | Full CRUD |
+| User management | Complete | Roles, permissions |
+| Order overview | Complete | Cross-vendor view |
+| System settings | Complete | Configuration |
+| Marketplace sync | Complete | LetzShop integration |
+| Code quality dashboard | Complete | Validation results |
+
+---
+
+## Recent Completions (January 2026)
+
+### Customer Account Features
+- **Profile Management**: Full customer profile API and UI
+  - Profile information editing (name, email, phone)
+  - Preferences management (language, marketing consent)
+  - Password change functionality
+  - API: `GET/PUT /api/v1/shop/profile`, `PUT /api/v1/shop/profile/password`
+- **Multiple Addresses**: Complete address book functionality
+  - Add, edit, delete addresses
+  - Set default shipping/billing addresses
+  - Address type support (shipping, billing)
+  - Country ISO codes for VAT calculation
+  - API: Full CRUD at `/api/v1/shop/addresses`
+- **Frontend Authentication**: Fixed all shop account pages
+  - Orders, messages, addresses, profile now properly authenticated
+  - Token-based API calls with Authorization header
+  - Proper redirect to login on 401 responses
+
+### VAT Calculation Alignment
+- Created shared VAT utility (`app/utils/vat.py`)
+- Added VAT fields to Order model: `vat_regime`, `vat_rate`, `vat_rate_label`, `vat_destination_country`
+- Updated order service to use vendor invoice settings
+- Full support for EU VAT regimes:
+  - Domestic (same country)
+  - OSS (One-Stop-Shop for B2C cross-border)
+  - Reverse charge (B2B with VAT number)
+  - Origin (non-OSS cross-border)
+  - Exempt (non-EU sales)
+
+### Shop Order Detail Enhancements
+- Order tracking timeline with visual status progression
+- Invoice download button with auto-generation
+- VAT breakdown display in order summary
+- New API endpoint: `GET /api/v1/shop/orders/{order_id}/invoice`
+
+### Test Coverage
+- Unit tests for VAT utility (23 tests)
+- Integration tests for shop orders API (13 tests)
+- Integration tests for shop addresses API
+- All validation scripts fixed and passing
+
+---
+
+## Remaining Gaps
+
+### High Priority
+
+1. **Payment Verification** - Payment gateway integration for order completion verification
+2. **Email Notification System** - Password reset, order updates, shipping notifications
+
+### Medium Priority
+
+1. **Analytics Enhancement** - Sales reports, revenue tracking
+2. **Shipping Label Generation** - Integration with shipping providers
+3. **Multi-language Support** - Full i18n for all templates
+
+### Low Priority
+
+1. **Returns/Refunds** - Return requests, refund processing
+2. **Promotions/Discounts** - Coupon codes, promotional pricing
+3. **Wishlist** - Customer product wishlist
+
+---
+
+## Frontend Gap Summary
+
+### Admin Dashboard Gaps
+
+| Component | Status | Priority |
+|-----------|--------|----------|
+| Dashboard analytics | Partial | Medium |
+| Bulk operations | Missing | Low |
+| Export functionality | Missing | Low |
+| Activity logs | Partial | Low |
+
+### Vendor Dashboard Gaps
+
+| Component | Status | Priority |
+|-----------|--------|----------|
+| Revenue analytics | Missing | Medium |
+| Shipping automation | Missing | Medium |
+| Return management | Missing | Low |
+| Promotion management | Missing | Low |
+| Multi-warehouse | Missing | Low |
+
+### Shop Frontend Gaps
+
+| Component | Status | Priority |
+|-----------|--------|----------|
+| Password reset email | Missing | High |
+| Order tracking updates | Missing | Medium |
+| Wishlist | Missing | Low |
+| Reviews/ratings | Missing | Low |
+| Social login | Missing | Low |
+
+---
+
+## Validation Status
+
+All code validators pass:
+
+```
+Architecture Validator: PASSED
+Security Validator: PASSED (with skips)
+Performance Validator: PASSED (with skips)
+```
+
+---
+
+## Launch Checklist
+
+- [x] Core order processing
+- [x] Invoice generation
+- [x] VAT calculation
+- [x] Customer authentication
+- [x] Order confirmation emails
+- [x] Shop order detail page
+- [x] Invoice download
+- [x] Customer profile management
+- [x] Multi-address support
+- [x] Customer messaging
+- [ ] Payment verification integration
+- [ ] Password reset emails
+- [ ] Production deployment configuration
+- [ ] SSL certificates
+- [ ] Database backups
+- [ ] Monitoring setup
+
+---
+
+## Recommendations
+
+1. **Immediate Focus:** Payment verification for order completion
+2. **Short-term:** Email notifications for password reset and order updates
+3. **Pre-launch:** Production infrastructure setup (SSL, monitoring, backups)
+4. **Post-launch:** Analytics enhancements and shipping integrations