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# Implementation Roadmap
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## Multi-Tenant Ecommerce Platform - Complete Development Guide
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**Last Updated**: October 11, 2025
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**Project Status**: Slice 1 In Progress (~75% complete)
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---
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## 📚 Documentation Structure
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Your complete vertical slice documentation is organized as follows:
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```
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docs/slices/
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├── 00_slices_overview.md ← Start here for overview
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├── 00_implementation_roadmap.md ← This file - your guide
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├── 01_slice1_admin_vendor_foundation.md
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├── 02_slice2_marketplace_import.md
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├── 03_slice3_product_catalog.md
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├── 04_slice4_customer_shopping.md
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└── 05_slice5_order_processing.md
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```
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---
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## 🎯 Quick Start Guide
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### For Current Development (Slice 1)
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1. ✅ Read `01_slice1_admin_vendor_foundation.md`
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2. ✅ Review what's marked as complete vs. in-progress
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3. ⏳ Focus on vendor login and dashboard pages
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4. ⏳ Complete testing checklist
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5. ⏳ Deploy to staging
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### For Future Slices
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1. Complete current slice 100%
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2. Read next slice documentation
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3. Set up backend (models, schemas, services, APIs)
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4. Build frontend (Jinja2 templates + Alpine.js)
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5. Test thoroughly
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6. Move to next slice
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---
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## 📊 Current Status Overview
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### Slice 1: Multi-Tenant Foundation (75% Complete)
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#### ✅ Completed
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- Backend database models (User, Vendor, Role, VendorUser)
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- Authentication system (JWT, bcrypt)
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- Admin service layer (vendor creation with owner)
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- Admin API endpoints (CRUD, dashboard)
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- Vendor context middleware (subdomain + path detection)
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- Admin login page (HTML + Alpine.js)
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- Admin dashboard (HTML + Alpine.js)
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- Admin vendor creation page (HTML + Alpine.js)
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#### ⏳ In Progress
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- Vendor login page (frontend)
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- Vendor dashboard page (frontend)
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- Testing and debugging
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- Deployment configuration
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#### 📋 To Do
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- Complete vendor login/dashboard
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- Full testing (see Slice 1 checklist)
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- Documentation updates
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- Staging deployment
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### Slices 2-5: Not Started
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All future slices have complete documentation ready to implement.
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---
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## 🗓️ Development Timeline
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### Week 1: Slice 1 - Foundation ⏳ CURRENT
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**Days 1-3**: ✅ Backend complete
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**Days 4-5**: ⏳ Frontend completion
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**Deliverable**: Admin can create vendors, vendors can log in
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### Week 2: Slice 2 - Marketplace Import
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**Days 1-3**: Backend (CSV import, Celery tasks, MarketplaceProduct model)
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**Days 4-5**: Frontend (import UI with Alpine.js, status tracking)
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**Deliverable**: Vendors can import products from Letzshop CSV
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### Week 3: Slice 3 - Product Catalog
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**Days 1-3**: Backend (Product model, publishing, inventory)
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**Days 4-5**: Frontend (product management, catalog UI)
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**Deliverable**: Vendors can manage product catalog
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### Week 4: Slice 4 - Customer Shopping
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**Days 1-3**: Backend (Customer model, Cart, public APIs)
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**Days 4-5**: Frontend (shop pages, cart with Alpine.js)
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**Deliverable**: Customers can browse and shop
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### Week 5: Slice 5 - Order Processing
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**Days 1-3**: Backend (Order model, checkout, order management)
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**Days 4-5**: Frontend (checkout flow, order history)
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**Deliverable**: Complete order workflow, platform ready for production
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---
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## 🎨 Technology Stack
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### Backend
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- **Framework**: FastAPI (Python 3.11+)
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- **Database**: PostgreSQL + SQLAlchemy ORM
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- **Authentication**: JWT tokens + bcrypt
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- **Background Jobs**: Celery + Redis/RabbitMQ
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- **API Docs**: Auto-generated OpenAPI/Swagger
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### Frontend
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- **Templating**: Jinja2 (server-side rendering)
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- **JavaScript**: Alpine.js v3.x (15KB, CDN-based)
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- **CSS**: Custom CSS with CSS variables
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- **AJAX**: Fetch API (vanilla JavaScript)
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- **No Build Step**: Everything runs directly in browser
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### Why This Stack?
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- ✅ **Alpine.js**: Lightweight reactivity without build complexity
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- ✅ **Jinja2**: Server-side rendering for SEO and performance
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- ✅ **No Build Step**: Faster development, easier deployment
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- ✅ **FastAPI**: Modern Python, async support, auto-docs
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- ✅ **PostgreSQL**: Robust, reliable, feature-rich
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---
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## 📋 Implementation Checklist
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Use this checklist to track your progress across all slices:
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### Slice 1: Foundation
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- [x] Backend models created
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- [x] Authentication system working
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- [x] Admin service layer complete
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- [x] Admin API endpoints working
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- [x] Vendor context middleware working
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- [x] Admin login page created
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- [x] Admin dashboard created
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- [x] Admin vendor creation page created
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- [ ] Vendor login page created
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- [ ] Vendor dashboard page created
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- [ ] All tests passing
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- [ ] Deployed to staging
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### Slice 2: Marketplace Import
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- [ ] MarketplaceProduct model
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- [ ] MarketplaceImportJob model
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- [ ] CSV processing service
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- [ ] Celery tasks configured
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- [ ] Import API endpoints
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- [ ] Import UI pages
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- [ ] Status tracking with Alpine.js
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- [ ] All tests passing
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### Slice 3: Product Catalog
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- [ ] Product model complete
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- [ ] Inventory model complete
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- [ ] Product service layer
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- [ ] Publishing logic
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- [ ] Product API endpoints
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- [ ] Product management UI
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- [ ] Catalog browsing
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- [ ] All tests passing
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### Slice 4: Customer Shopping
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- [ ] Customer model
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- [ ] Cart model
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- [ ] Customer service layer
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- [ ] Cart service layer
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- [ ] Public product APIs
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- [ ] Shop homepage
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- [ ] Product detail pages
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- [ ] Shopping cart UI
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- [ ] Customer registration/login
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- [ ] All tests passing
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### Slice 5: Order Processing
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- [ ] Order model
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- [ ] OrderItem model
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- [ ] Order service layer
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- [ ] Checkout logic
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- [ ] Order API endpoints
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- [ ] Checkout UI (multi-step)
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- [ ] Customer order history
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- [ ] Vendor order management
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- [ ] Email notifications
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- [ ] Payment integration (Stripe)
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- [ ] All tests passing
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- [ ] Production ready
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---
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## 🎯 Each Slice Must Include
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### Backend Checklist
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- [ ] Database models defined
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- [ ] Pydantic schemas created
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- [ ] Service layer implemented
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- [ ] API endpoints created
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- [ ] Exception handling added
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- [ ] Database migrations applied
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- [ ] Unit tests written
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- [ ] Integration tests written
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### Frontend Checklist
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- [ ] Jinja2 templates created
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- [ ] Alpine.js components implemented
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- [ ] CSS styling applied
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- [ ] API integration working
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- [ ] Loading states added
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- [ ] Error handling added
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- [ ] Mobile responsive
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- [ ] Browser tested (Chrome, Firefox, Safari)
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### Documentation Checklist
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- [ ] Slice documentation updated
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- [ ] API endpoints documented
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- [ ] Frontend components documented
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- [ ] Testing checklist completed
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- [ ] Known issues documented
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- [ ] Next steps identified
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---
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## 🔧 Development Workflow
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### Starting a New Slice
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1. **Read Documentation**
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```bash
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# Open the slice markdown file
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code docs/slices/0X_sliceX_name.md
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```
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2. **Set Up Backend**
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```bash
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# Create database models
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# Create Pydantic schema
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# Implement service layer
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# Create API endpoints
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# Write tests
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```
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3. **Set Up Frontend**
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```bash
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# Create Jinja2 templates
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# Add Alpine.js components
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# Style with CSS
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# Test in browser
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```
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4. **Test Thoroughly**
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```bash
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# Run backend tests
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pytest tests/
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# Manual testing
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# Use testing checklist in slice docs
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```
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5. **Deploy & Demo**
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```bash
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# Deploy to staging
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# Demo to stakeholders
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# Gather feedback
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```
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### Daily Development Flow
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**Morning**
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- Review slice documentation
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- Identify today's goals (backend or frontend)
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- Check testing checklist
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**During Development**
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- Follow code patterns from slice docs
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- Use Alpine.js examples provided
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- Keep vendor isolation in mind
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- Test incrementally
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**End of Day**
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- Update slice documentation with progress
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- Mark completed items in checklist
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- Note any blockers or issues
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- Commit code with meaningful messages
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---
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## 🎨 Alpine.js Patterns
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### Basic Component Pattern
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```javascript
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function myComponent() {
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return {
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// State
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data: [],
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loading: false,
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error: null,
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// Lifecycle
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init() {
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this.loadData();
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},
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// Methods
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async loadData() {
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this.loading = true;
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try {
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this.data = await apiClient.get('/api/endpoint');
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} catch (error) {
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this.error = error.message;
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} finally {
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this.loading = false;
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}
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}
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}
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}
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```
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### Template Usage
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```html
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<div x-data="myComponent()" x-init="init()">
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<div x-show="loading">Loading...</div>
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<div x-show="error" x-text="error"></div>
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<div x-show="!loading && !error">
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<template x-for="item in data" :key="item.id">
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<div x-text="item.name"></div>
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</template>
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</div>
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</div>
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```
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### Common Directives
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- `x-data` - Component state
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- `x-init` - Initialization
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- `x-show` - Toggle visibility
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- `x-if` - Conditional rendering
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- `x-for` - Loop through arrays
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- `x-model` - Two-way binding
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- `@click` - Event handling
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- `:class` - Dynamic classes
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- `x-text` - Text content
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- `x-html` - HTML content
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---
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## 📚 Key Resources
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### Documentation Files
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- `00_slices_overview.md` - Complete overview
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- `01_slice1_admin_vendor_foundation.md` - Current work
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- `../quick_start_guide.md` - Setup guide
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- `../css_structure_guide.txt` - CSS organization
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- `../css_quick_reference.txt` - CSS usage
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- `../12.project_readme_final.md` - Complete README
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### External Resources
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- [Alpine.js Documentation](https://alpinejs.dev/)
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- [FastAPI Documentation](https://fastapi.tiangolo.com/)
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- [Jinja2 Documentation](https://jinja.palletsprojects.com/)
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- [SQLAlchemy Documentation](https://docs.sqlalchemy.org/)
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---
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## 🚨 Common Pitfalls to Avoid
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### Backend
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- ❌ Forgetting vendor isolation in queries
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- ❌ Not validating vendor_id in API endpoints
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- ❌ Skipping database indexes
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- ❌ Not handling edge cases
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- ❌ Missing error handling
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### Frontend
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- ❌ Not handling loading states
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- ❌ Not displaying error messages
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- ❌ Forgetting mobile responsiveness
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- ❌ Not testing in multiple browsers
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- ❌ Mixing vendor contexts
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### General
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- ❌ Skipping tests
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- ❌ Not updating documentation
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- ❌ Moving to next slice before completing current
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- ❌ Not following naming conventions
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- ❌ Committing without testing
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---
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## ✅ Quality Gates
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Before moving to the next slice, ensure:
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1. **All Features Complete**
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- All user stories implemented
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- All acceptance criteria met
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- All API endpoints working
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2. **All Tests Pass**
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- Backend unit tests
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- Backend integration tests
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- Frontend manual testing
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- Security testing (vendor isolation)
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3. **Documentation Updated**
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- Slice documentation current
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- API docs updated
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- Testing checklist completed
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4. **Code Quality**
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- Follows naming conventions
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- No console errors
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- No security vulnerabilities
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- Performance acceptable
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5. **Stakeholder Approval**
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- Demo completed
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- Feedback incorporated
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- Sign-off received
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---
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## 🎉 Success Metrics
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### After Slice 1
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- ✅ Admin can create vendors
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- ✅ Vendors can log in
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- ✅ Vendor isolation works
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- ✅ Context detection works
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### After Slice 2
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- ✅ Vendors can import CSVs
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- ✅ Background processing works
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- ✅ Import tracking functional
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### After Slice 3
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- ✅ Products published to catalog
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- ✅ Inventory management working
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- ✅ Product customization enabled
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### After Slice 4
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- ✅ Customers can browse products
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- ✅ Shopping cart functional
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- ✅ Customer accounts working
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|
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### After Slice 5
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- ✅ Complete checkout workflow
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- ✅ Order management operational
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- ✅ **Platform production-ready!**
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|
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---
|
||||
|
||||
## 🚀 Ready to Start?
|
||||
|
||||
### Current Focus: Complete Slice 1
|
||||
|
||||
**Your immediate next steps:**
|
||||
|
||||
1. ✅ Read `01_slice1_admin_vendor_foundation.md`
|
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2. ⏳ Complete vendor login page (`templates/vendor/login.html`)
|
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3. ⏳ Complete vendor dashboard (`templates/vendor/dashboard.html`)
|
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4. ⏳ Test complete admin → vendor flow
|
||||
5. ⏳ Check all items in Slice 1 testing checklist
|
||||
6. ⏳ Deploy to staging
|
||||
7. ⏳ Demo to stakeholders
|
||||
8. ✅ Move to Slice 2
|
||||
|
||||
### Need Help?
|
||||
|
||||
- Check the slice documentation for detailed implementation
|
||||
- Review Alpine.js examples in the docs
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||||
- Look at CSS guides for styling
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||||
- Test frequently and incrementally
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||||
- Update documentation as you progress
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||||
|
||||
---
|
||||
|
||||
## 💡 Pro Tips
|
||||
|
||||
1. **Work Incrementally**: Complete one component at a time
|
||||
2. **Test Continuously**: Don't wait until the end to test
|
||||
3. **Follow Patterns**: Use the examples in slice documentation
|
||||
4. **Document as You Go**: Update docs while code is fresh
|
||||
5. **Ask for Reviews**: Get feedback early and often
|
||||
6. **Celebrate Progress**: Each completed slice is a milestone!
|
||||
|
||||
---
|
||||
|
||||
## 📞 Support
|
||||
|
||||
If you need assistance:
|
||||
- Review the slice-specific documentation
|
||||
- Check the testing checklists
|
||||
- Look at the example code provided
|
||||
- Refer to the technology stack documentation
|
||||
|
||||
---
|
||||
|
||||
**Ready to build an amazing multi-tenant ecommerce platform?**
|
||||
|
||||
**Start with**: `01_slice1_admin_vendor_foundation.md`
|
||||
|
||||
**You've got this!** 🚀
|
||||
Reference in New Issue
Block a user