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Zhongwei Li
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# CLAUDE.md
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This file provides guidance to Claude Code when working with this {{PROJECT_NAME}} codebase.
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## Project Overview
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**{{PROJECT_NAME}}** - An offline-first Progressive Web App for {{MODEL_DISPLAY_NAME}} management, built with SvelteKit frontend and Odoo Studio backend.
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## Development Commands
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### Development
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```bash
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npm run dev # Start dev server at http://localhost:5173
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```
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### Building
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```bash
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npm run build # Production build (outputs to /build)
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npm run preview # Preview production build locally
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```
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### Type Checking
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```bash
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npm run check # Run svelte-check for type errors
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npm run check:watch # Watch mode for type checking
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```
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## Environment Setup
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Required environment variables in `.env`:
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```env
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ODOO_URL=https://your-instance.odoo.com
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ODOO_DB=your-database-name
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ODOO_USERNAME=your-username
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ODOO_API_KEY=your-api-key
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ODOO_PRIMARY_MODEL=x_{{MODEL_NAME}}
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```
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**Important**: The app uses API keys (not passwords) for Odoo authentication. These are server-side only and never exposed to the client.
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## Architecture
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### Three-Layer Data Flow
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```
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Frontend Component (Svelte)
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↓
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Cache Store (Svelte Store)
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↓
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Odoo API Client (src/lib/odoo.js)
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↓
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Server Route (src/routes/api/odoo/+server.js)
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↓
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Odoo JSON-RPC Backend
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```
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Data also persists to localStorage for offline access.
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### Key Architectural Patterns
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#### 1. **Smart Caching Layer** (`src/lib/stores/cache.js`)
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The centerpiece of the frontend architecture. This Svelte store provides:
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- **Immediate data availability**: Shows cached data from localStorage instantly on page load
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- **Background sync**: Automatically syncs with Odoo every 3 minutes if cache is stale (>5 minutes old)
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- **Incremental fetching**: Only fetches records with `id > lastRecordId` to minimize API calls
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- **Optimistic updates**: UI updates immediately, syncs to server in background
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**Key functions**:
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- `initialize()` - Call in `onMount()`, loads cache and starts background sync
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- `sync()` - Incremental sync with Odoo
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- `forceRefresh()` - Clears cache and does full sync
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- `createRecord()`, `updateRecord()`, `deleteRecord()` - CRUD operations with optimistic updates
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#### 2. **Server-Side API Proxy** (`src/routes/api/odoo/+server.js`)
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SvelteKit server route that acts as a JSON-RPC proxy to Odoo. This pattern:
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- Keeps credentials server-side (never exposed to client)
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- Caches Odoo UID to reduce authentication calls
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- Provides a simple `{ action, data }` interface for the frontend
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**Supported actions**: `create`, `search`, `search_model`, `update`, `delete`
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#### 3. **Odoo Field Formatting**
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Odoo uses specific formats for relational fields:
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- **Many2One (single relation)**: Send as integer ID, receive as `[id, "display_name"]` tuple
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- **Many2Many (multiple relations)**: Send as `[[6, 0, [id1, id2, ...]]]`, receive as array of tuples
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Helper functions in `src/lib/odoo.js`:
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- `formatMany2one(id)` - Converts ID to integer or `false`
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- `formatMany2many(ids)` - Wraps IDs in Odoo command format `[[6, 0, [...]]]`
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#### 4. **Offline-First Strategy**
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Two-phase data loading:
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1. **Immediate Load**: Show cached data from localStorage
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2. **Background Sync**: Fetch new data if cache is stale
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```javascript
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// Phase 1: Load from cache immediately
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const cachedData = loadFromStorage();
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updateUI(cachedData);
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// Phase 2: Background sync if stale
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if (cachedData.isStale) {
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syncInBackground();
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}
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```
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### SvelteKit Configuration
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- **Rendering**: `ssr: false`, `csr: true`, `prerender: true` in `src/routes/+layout.js`
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- **Adapter**: `adapter-static` configured for static output to `/build` directory
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- **Base path**: Configurable via `PUBLIC_BASE_PATH` env var (for GitHub Pages deployment)
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### PWA Features
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Configured in `vite.config.js`:
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- **Service Worker**: Auto-generated with Workbox, caches all static assets
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- **Auto-update**: New versions automatically activate
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- **Manifest**: Configured for standalone mode, installable on mobile
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- **Icons**: 192x192 and 512x512 PNG icons in `/static`
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## Odoo Model Structure
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### Main Model: `x_{{MODEL_NAME}}`
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| Field | Type | Purpose |
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|-------|------|---------|
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| `x_name` | Char | Record name |
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| Add your custom fields with x_studio_ prefix |
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## Important Development Notes
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### Working with the Cache
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When modifying record-related features:
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1. **Always call `{{MODEL_NAME}}Cache.sync()` after mutations** (create/update/delete)
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2. **Initialize the cache in page components**: `onMount(() => {{MODEL_NAME}}Cache.initialize())`
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3. **Clean up on unmount**: `onDestroy(() => {{MODEL_NAME}}Cache.destroy())`
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4. **Cache invalidation**: Increment cache version in `cache.js` if store schema changes
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### Odoo API Patterns
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When adding new Odoo operations:
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1. **Frontend**: Add method to `src/lib/odoo.js` (calls `/api/odoo` endpoint)
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2. **Backend**: Add new action case in `src/routes/api/odoo/+server.js`
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3. **Use `execute()` helper** for model operations (wraps authentication)
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Example:
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```javascript
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// Frontend (odoo.js)
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async customOperation(id) {
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return this.callApi('custom', { id });
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}
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// Backend (+server.js)
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case 'custom':
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const result = await execute('x_{{MODEL_NAME}}', 'write', [[data.id], { custom_field: true }]);
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return json({ success: true, result });
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```
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### PWA Manifest Updates
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When changing app name, icons, or theme:
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1. Update `vite.config.js` manifest section
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2. Update `/static/manifest.json`
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3. Replace `/static/icon-192.png` and `/static/icon-512.png`
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4. Run `npm run build` to regenerate service worker
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### Deployment
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**Vercel** (primary):
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- Automatically deploys from `main` branch
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- Set environment variables in Vercel dashboard
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- Outputs to `/build` directory (configured in `vercel.json`)
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**GitHub Pages**:
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- Set `PUBLIC_BASE_PATH=/repo-name` in GitHub Actions secrets
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- Configure GitHub Pages source as "GitHub Actions"
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- Workflow auto-deploys on push to `main`
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## File Structure Reference
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```
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src/
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├── lib/
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│ ├── stores/
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│ │ └── cache.js # Core caching & sync logic
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│ ├── odoo.js # Frontend API client
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│ ├── db.js # IndexedDB manager
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│ └── utils.js # Utility functions
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├── routes/
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│ ├── +layout.js # Root layout config (SSR/CSR settings)
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│ ├── +layout.svelte # Root layout component
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│ ├── +page.svelte # Add record form
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│ ├── list/+page.svelte # List all records
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│ └── api/odoo/+server.js # Odoo JSON-RPC proxy endpoint
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└── app.html # HTML template with PWA meta tags
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```
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## Common Gotchas
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1. **Odoo field naming**: All custom fields use `x_studio_` prefix (Odoo Studio convention)
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2. **Partner name format**: Odoo returns `[id, "name"]` tuples, must extract display name for UI
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3. **localStorage limits**: Browser typically allows 5-10MB, sufficient for hundreds of records
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4. **Service worker caching**: After PWA updates, users may need to close all tabs and reopen
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5. **Base path in production**: GitHub Pages deployments require `PUBLIC_BASE_PATH` env var set
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6. **API authentication**: Use API keys, not passwords. Generate in Odoo user settings.
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## Adding New Features
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### Add a New Field
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1. Add field in Odoo Studio with `x_studio_` prefix
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2. Update `fields` array in `src/lib/stores/cache.js`
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3. Add form input in `src/routes/+page.svelte`
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4. Display field in `src/routes/list/+page.svelte`
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### Add a New Page
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1. Create `src/routes/new-page/+page.svelte`
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2. Add navigation link in layout or other pages
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3. Import and use cache store if accessing data
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### Add Partner/Relation Field
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1. Add Many2one or Many2many field in Odoo
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2. Use `odooClient.formatMany2one()` or `formatMany2many()` when saving
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3. Use `odooClient.fetchPartners()` to load options
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4. Display resolved names in UI
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---
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**Generated with Odoo PWA Generator**
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