docs: restructure documentation into organized folders

Organized docs into logical subdirectories:

**New Structure:**
- docs/
  - README.md (index with quick links)
  - PROJECT_PLAN.md (root level - main roadmap)
  - development/
    - getting-started.md (5-min quickstart)
    - local-setup.md (detailed Docker Compose guide)
    - workflow.md (daily development)
    - git-workflow.md (branching strategy)
  - architecture/
    - overview.md (tech stack, design)
    - database.md (schema, RLS, migrations)
    - api.md (endpoints, functions)
  - deployment/
    - production.md (Docker, Coolify)
    - ci-cd.md (automated pipelines)

**Cleaned Up:**
- Moved DEV_SETUP.md → docs/development/local-setup.md
- Removed outdated SETUP.md (referenced old Coolify setup)
- Replaced with getting-started.md (current Docker Compose flow)
- Updated README.md links to new structure

All paths tested, no broken links.

docs/README.md

@@ -0,0 +1,84 @@
+# Pantry Documentation
+
+Complete documentation for the Pantry household inventory management system.
+
+## 📚 Documentation Structure
+
+### 🚀 Getting Started
+
+- **[Project Overview](PROJECT_PLAN.md)** - Vision, roadmap, and MVP phases
+- **[Local Setup Guide](development/local-setup.md)** - Docker Compose development environment
+- **[Getting Started](development/getting-started.md)** - Quick start for new developers
+
+### 🏗️ Architecture
+
+- **[Architecture Overview](architecture/overview.md)** - Tech stack, design decisions, data flow
+- **[Database Schema](architecture/database.md)** - Tables, relationships, RLS policies, migrations
+- **[API Reference](architecture/api.md)** - Supabase endpoints, Edge Functions, helpers
+
+### 💻 Development
+
+- **[Development Workflow](development/workflow.md)** - Daily workflow, conventions, best practices
+- **[Git Workflow](development/git-workflow.md)** - Branching strategy, PR process, reviews
+
+### 🚢 Deployment
+
+- **[Production Deployment](deployment/production.md)** - Docker, Coolify, environment setup
+- **[CI/CD Pipeline](deployment/ci-cd.md)** - Automated testing, builds, deployments
+
+---
+
+## 🎯 Quick Links by Role
+
+### New Developer
+1. [Local Setup Guide](development/local-setup.md) - Get running in 5 minutes
+2. [Architecture Overview](architecture/overview.md) - Understand the stack
+3. [Development Workflow](development/workflow.md) - Daily development process
+
+### Feature Implementation
+1. [Database Schema](architecture/database.md) - Table structure and queries
+2. [API Reference](architecture/api.md) - Available endpoints
+3. [Git Workflow](development/git-workflow.md) - Branch naming, PR checklist
+
+### Deployment & Operations
+1. [Production Deployment](deployment/production.md) - Deploy to production
+2. [CI/CD Pipeline](deployment/ci-cd.md) - Automated workflows
+
+---
+
+## 📊 Current Status
+
+**MVP Progress:** 14/34 issues complete (41.2%)
+
+- ✅ Week 1: Database + Frontend Foundation (6/6)
+- ✅ Week 2: Core Inventory Management (8/8)
+- 🔄 Week 3: Barcode Scanning (1/5)
+- ⏸️ Week 4-6: Tag UI, PWA, Deployment (20 remaining)
+
+See [PROJECT_PLAN.md](PROJECT_PLAN.md) for detailed roadmap.
+
+---
+
+## 🤝 Contributing
+
+For contribution guidelines, see [Development Workflow](development/workflow.md).
+
+Key points:
+- Feature branches off `develop`
+- PRs require review before merge
+- Follow conventional commits
+- Write tests for new features
+
+---
+
+## 🔗 External Resources
+
+- **Repository:** https://gitea.jeanlucmakiola.de/pantry-app/pantry
+- **Supabase Docs:** https://supabase.com/docs
+- **Nuxt 4 Docs:** https://nuxt.com
+- **Open Food Facts API:** https://wiki.openfoodfacts.org/API
+
+---
+
+**Last Updated:** 2026-02-09  
+**Version:** 0.1.0-alpha (MVP in progress)

docs/development/getting-started.md

@@ -0,0 +1,189 @@
+# Getting Started with Pantry Development
+
+Welcome! This guide will get you from zero to running Pantry locally in ~5 minutes.
+
+## 🎯 What You'll Build
+
+A self-hosted kitchen inventory app with:
+- Inventory management (add, edit, delete items)
+- Tag-based organization (Fridge, Freezer, Dairy, etc.)
+- Unit conversions (g, kg, L, cups)
+- Barcode scanning (coming soon)
+- PWA features (offline, installable)
+
+## ⚡ Quick Start
+
+### Prerequisites
+
+- **Docker** & **Docker Compose** - [Install](https://docs.docker.com/get-docker/)
+- **Bun** - [Install](https://bun.sh): `curl -fsSL https://bun.sh/install | bash`
+- **Git**
+
+### One-Command Setup
+
+```bash
+# Clone the repo
+git clone https://gitea.jeanlucmakiola.de/pantry-app/pantry.git
+cd pantry
+
+# Run the setup script
+./dev.sh
+```
+
+That's it! The script will:
+1. ✅ Start Supabase services (Docker Compose)
+2. ✅ Wait for services to initialize
+3. ✅ Install frontend dependencies
+4. ✅ Launch Nuxt dev server
+
+### Access the App
+
+| Service | URL | Purpose |
+|---------|-----|---------|
+| **App** | `http://localhost:3000` | Main frontend |
+| **Supabase Studio** | `http://localhost:54323` | Database admin UI |
+| **API** | `http://localhost:54321` | Backend API |
+
+## 🎮 Try It Out
+
+1. Open `http://localhost:3000`
+2. Click **"Add Manually"** to create your first item
+3. Fill in:
+   - Name: "Milk"
+   - Quantity: 1
+   - Unit: Liter
+   - Tags: Fridge, Dairy
+   - Expiry: Set a date
+4. Click **"Add Item"** and see it in the grid!
+
+### Explore Features
+
+- **Edit item:** Click "Edit" on any card
+- **Adjust quantity:** Use +/- buttons
+- **Delete item:** Click "Delete" (confirms first)
+- **View database:** Open Supabase Studio at `:54323`
+
+## 📁 Project Structure
+
+```
+pantry/
+├── app/                      # Nuxt 4 frontend
+│   ├── components/           # Vue components
+│   │   └── inventory/        # Inventory UI (List, Card, Forms)
+│   ├── composables/          # Data hooks (useInventory, useSupabase)
+│   ├── pages/                # Routes (index, scan, settings)
+│   └── types/                # TypeScript definitions
+├── supabase/
+│   └── migrations/           # Database schema (001-005)
+├── docker-compose.yml        # Supabase services
+├── docker/
+│   └── kong.yml              # API gateway config
+└── docs/                     # Documentation
+```
+
+## 🛠️ Common Tasks
+
+### View Logs
+
+```bash
+# All services
+docker-compose logs -f
+
+# Just the database
+docker-compose logs -f db
+```
+
+### Reset Database
+
+```bash
+# Stop and remove volumes (fresh start)
+docker-compose down -v
+
+# Restart (migrations auto-apply)
+docker-compose up -d
+```
+
+### Access Database Directly
+
+```bash
+# psql CLI
+docker-compose exec db psql -U postgres -d postgres
+
+# Or use Supabase Studio (GUI)
+open http://localhost:54323
+```
+
+### Stop Everything
+
+```bash
+# Stop services (keep data)
+docker-compose stop
+
+# Stop and remove everything
+docker-compose down -v
+```
+
+## 🔍 What's Included
+
+### Database (Pre-seeded)
+
+**30 Units:**
+- Weight: g, kg, mg, lb, oz
+- Volume: mL, L, cup, tbsp, tsp
+- Count: piece, dozen, bottle, can, jar
+
+**33 Tags:**
+- Position: Fridge, Freezer, Pantry
+- Type: Dairy, Meat, Vegetables, Fruits
+- Dietary: Vegan, Gluten-Free, Organic
+- Custom: Low Stock, To Buy, Meal Prep
+
+### Features (Working Now)
+
+- ✅ Add/Edit/Delete inventory items
+- ✅ Tag selection (multi-select)
+- ✅ Unit conversions
+- ✅ Expiry date tracking with warnings
+- ✅ Responsive layout (mobile-ready)
+- ✅ Quantity quick actions (+/- buttons)
+
+### Features (Coming Soon)
+
+- ⏳ Barcode scanning (Week 3)
+- ⏳ User authentication UI
+- ⏳ Tag management
+- ⏳ PWA (offline mode)
+
+## 📚 Next Steps
+
+### Learn the Stack
+
+1. **[Architecture Overview](../architecture/overview.md)** - Tech stack and design decisions
+2. **[Database Schema](../architecture/database.md)** - Tables and relationships
+3. **[Development Workflow](workflow.md)** - Daily development process
+
+### Make Your First Change
+
+1. Pick an issue from Gitea
+2. Create a branch: `git checkout -b feature/your-feature`
+3. Make changes, test locally
+4. Commit: `git commit -m "feat: your feature"`
+5. Push and create PR
+
+### Troubleshooting
+
+See **[Local Setup Guide](local-setup.md)** for:
+- Port conflicts
+- Database connection issues
+- Frontend errors
+- Environment variables
+
+## 🤝 Need Help?
+
+- **Documentation:** Browse `/docs` folder
+- **Issues:** Create an issue on Gitea
+- **Local setup:** See [local-setup.md](local-setup.md)
+
+---
+
+**Ready to code?** Check out the [Development Workflow](workflow.md)!

docs/development/local-setup.md

@@ -0,0 +1,335 @@
+# Pantry - Local Development Setup
+
+Self-hosted household pantry management app with barcode scanning.
+
+## 🚀 Quick Start
+
+### Prerequisites
+
+- **Docker** & **Docker Compose** (for Supabase backend)
+- **Bun** (for Nuxt frontend) - Install: `curl -fsSL https://bun.sh/install | bash`
+- **Git**
+
+### 1. Clone & Setup
+
+```bash
+git clone https://gitea.jeanlucmakiola.de/pantry-app/pantry.git
+cd pantry
+```
+
+### 2. Start Supabase (Backend)
+
+```bash
+# Start all Supabase services
+docker-compose up -d
+
+# Wait ~10 seconds for services to initialize
+# Check status
+docker-compose ps
+```
+
+**Services running:**
+- PostgreSQL: `localhost:5432`
+- Supabase API: `http://localhost:54321`
+- Supabase Studio: `http://localhost:54323` (admin UI)
+
+### 3. Apply Database Migrations
+
+The migrations are automatically applied on first startup via `/docker-entrypoint-initdb.d`.
+
+To verify:
+```bash
+docker-compose exec db psql -U postgres -d postgres -c "\dt"
+```
+
+You should see: `inventory_items`, `products`, `tags`, `units`, `item_tags`
+
+### 4. Start Nuxt App (Frontend)
+
+```bash
+cd app
+bun install
+bun run dev
+```
+
+**App running:** `http://localhost:3000`
+
+### 5. Open & Test
+
+1. Visit `http://localhost:3000`
+2. Click "Add Manually" to create your first inventory item
+3. Access Supabase Studio at `http://localhost:54323` to view database
+
+---
+
+## 📁 Project Structure
+
+```
+pantry/
+├── app/                    # Nuxt 4 frontend
+│   ├── components/         # Vue components
+│   │   └── inventory/      # Inventory CRUD UI
+│   ├── composables/        # Supabase client, data hooks
+│   ├── pages/              # Routes (index, scan, settings)
+│   └── types/              # TypeScript definitions
+├── supabase/
+│   └── migrations/         # SQL schema & seed data
+├── docker/
+│   └── kong.yml            # API gateway config
+├── docker-compose.yml      # Supabase services
+└── .env                    # Environment variables
+```
+
+---
+
+## 🔧 Common Tasks
+
+### View Logs
+
+```bash
+# All services
+docker-compose logs -f
+
+# Specific service
+docker-compose logs -f db
+docker-compose logs -f auth
+```
+
+### Reset Database
+
+```bash
+# Stop services
+docker-compose down -v
+
+# Restart (migrations auto-apply)
+docker-compose up -d
+```
+
+### Access Database
+
+```bash
+# psql
+docker-compose exec db psql -U postgres -d postgres
+
+# Supabase Studio (GUI)
+# http://localhost:54323
+```
+
+### Run Migrations Manually
+
+```bash
+# If you add new migrations after initial setup
+docker-compose exec db psql -U postgres -d postgres -f /docker-entrypoint-initdb.d/003_helper_functions.sql
+```
+
+### Create Test User
+
+```bash
+# Via Supabase Studio: http://localhost:54323
+# → Authentication → Add User
+# Email: test@example.com
+# Password: password123
+
+# Or via curl:
+curl http://localhost:54321/auth/v1/signup \
+  -H "apikey: eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9..." \
+  -H "Content-Type: application/json" \
+  -d '{"email":"test@example.com","password":"password123"}'
+```
+
+---
+
+## 🧪 Testing Features
+
+### 1. Inventory Management
+- Add items manually via form
+- Edit quantities with +/- buttons
+- Delete items
+- View expiry warnings
+
+### 2. Tags & Organization
+- Pre-seeded tags: Fridge, Freezer, Pantry, Dairy, Vegan, etc.
+- Multi-select tags when adding items
+- Color-coded badges
+
+### 3. Units
+- 30 pre-seeded units (g, kg, L, cups, pieces, etc.)
+- Automatic conversion support
+
+### 4. Barcode Scanning (Week 3 - In Progress)
+- Camera access (requires HTTPS in production)
+- Manual barcode entry fallback
+
+---
+
+## 🐛 Troubleshooting
+
+### Port Conflicts
+
+If ports 5432, 54321, or 3000 are in use:
+
+```bash
+# Check what's using the port
+sudo lsof -i :5432
+
+# Option 1: Stop conflicting service
+# Option 2: Change port in docker-compose.yml
+```
+
+### Database Connection Refused
+
+```bash
+# Wait for PostgreSQL to fully start
+docker-compose logs db | grep "ready to accept connections"
+
+# If stuck, restart
+docker-compose restart db
+```
+
+### Migrations Not Applied
+
+```bash
+# Verify migrations directory is mounted
+docker-compose exec db ls -la /docker-entrypoint-initdb.d
+
+# Manually apply
+docker-compose exec db bash
+cd /docker-entrypoint-initdb.d
+for f in *.sql; do psql -U postgres -d postgres -f "$f"; done
+```
+
+### Frontend: Module Not Found
+
+```bash
+cd app
+rm -rf node_modules bun.lock .nuxt
+bun install
+bun run dev
+```
+
+---
+
+## 📊 Database Schema
+
+### Tables
+
+| Table | Purpose | Rows (Est.) |
+|-------|---------|-------------|
+| `inventory_items` | Current inventory | 100-500 |
+| `products` | Barcode cache (Open Food Facts) | 500-2000 |
+| `tags` | Organization labels | 50 (33 pre-seeded) |
+| `units` | Measurement units | 50 (30 pre-seeded) |
+| `item_tags` | Many-to-many item ↔ tag | 200-1000 |
+
+### Pre-Seeded Data
+
+**Units (30):**
+- Weight: g, kg, mg, lb, oz
+- Volume: mL, L, cup, tbsp, tsp, gal, qt, pt
+- Count: piece, dozen, package, bottle, can, jar, box, bag
+
+**Tags (33):**
+- Position: Fridge, Freezer, Pantry, Cabinet
+- Type: Dairy, Meat, Vegetables, Fruits, Snacks
+- Dietary: Vegan, Gluten-Free, Organic, Kosher, Halal
+- Custom: Low Stock, To Buy, Meal Prep, Leftovers
+
+---
+
+## 🔐 Authentication
+
+**Default Setup (Development):**
+- Auto-confirm emails (no SMTP needed)
+- Anyone can sign up
+- JWT tokens valid for 1 hour
+
+**Create Admin User:**
+
+```sql
+-- Via psql
+docker-compose exec db psql -U postgres -d postgres
+
+INSERT INTO auth.users (id, email, encrypted_password, email_confirmed_at)
+VALUES (
+  gen_random_uuid(),
+  'admin@pantry.local',
+  crypt('admin123', gen_salt('bf')),
+  NOW()
+);
+```
+
+---
+
+## 🌐 Environment Variables
+
+**.env** (root)
+```bash
+POSTGRES_PASSWORD=postgres
+JWT_SECRET=your-secret-here
+ANON_KEY=<supabase-anon-key>
+SERVICE_ROLE_KEY=<supabase-service-role-key>
+```
+
+**app/.env** (Nuxt)
+```bash
+NUXT_PUBLIC_SUPABASE_URL=http://localhost:54321
+NUXT_PUBLIC_SUPABASE_ANON_KEY=<same-as-above>
+```
+
+---
+
+## 📈 Development Workflow
+
+1. **Make changes** to Nuxt app → Hot reload at `localhost:3000`
+2. **Database changes** → Create new migration in `supabase/migrations/`
+3. **Test** → Add items, scan barcodes, check database
+4. **Commit** → Feature branch → PR to `develop`
+
+---
+
+## 🚢 Production Deployment (Coming Soon)
+
+See `docs/DEPLOYMENT.md` for:
+- Coolify setup
+- Environment configuration
+- SSL/HTTPS setup
+- Backups
+
+---
+
+## 📚 Documentation
+
+- [Architecture](docs/ARCHITECTURE.md)
+- [Database Schema](docs/DATABASE.md)
+- [API Reference](docs/API.md)
+- [Development Guide](docs/DEVELOPMENT.md)
+
+---
+
+## 🤝 Contributing
+
+This is a personal project, but issues and PRs welcome!
+
+1. Fork the repo
+2. Create feature branch (`git checkout -b feature/amazing-feature`)
+3. Commit changes (`git commit -m 'Add amazing feature'`)
+4. Push to branch (`git push origin feature/amazing-feature`)
+5. Open Pull Request
+
+---
+
+## 📝 License
+
+MIT License - See LICENSE file
+
+---
+
+## 🙋 Support
+
+- Issues: https://gitea.jeanlucmakiola.de/pantry-app/pantry/issues
+- Docs: https://gitea.jeanlucmakiola.de/pantry-app/pantry/wiki
+
+---
+
+**Version:** 0.1.0-alpha (MVP in progress)  
+**Status:** Week 2 complete, Week 3 in progress (14/34 issues done)