feat(elixir): image upload function with preview

README.md

@@ -116,18 +116,56 @@ The application uses a simple password-based authentication system:
 | Manual editing | `Inventory.update_component/2` | **NEW**: Full edit functionality with validation |
 | `changeAmount.php` | `Inventory.update_component_count/2` | Atomic operations, constraints |
 | Manual category management | `CategoriesLive` + `Inventory.create_category/1` | **NEW**: Full category CRUD with web interface |
-| `imageUpload.php` | (Future: Phoenix file uploads) | Planned improvement |
+| `imageUpload.php` | Phoenix LiveView file uploads with `.live_file_input` | **IMPLEMENTED**: Full image upload with preview, validation, and automatic cleanup |
 | Session management | Phoenix sessions + LiveView | Built-in CSRF protection |
 
 ## Future Enhancements
 
-1. **Image Upload**: Implement Phoenix file uploads for component images
+1. ~~**Image Upload**: Implement Phoenix file uploads for component images~~ ✅ **COMPLETED**
 2. **Bulk Operations**: Import/export components via CSV
 3. **API Endpoints**: REST API for external integrations
 4. **User Management**: Multi-user support with roles and permissions
 5. **Advanced Search**: Filters by category, stock level, etc.
 6. **Barcode/QR Codes**: Generate and scan codes for quick inventory updates
 
+## ✅ Recently Implemented Features
+
+### Image Upload System
+- **Phoenix LiveView file uploads** with `.live_file_input` component
+- **Image preview** during upload with progress indication
+- **File validation** (JPG, PNG, GIF up to 5MB)
+- **Automatic cleanup** of old images when updated or deleted
+- **Responsive image display** in component listings with fallback placeholders
+- **Upload error handling** with user-friendly messages
+
+### Visual Datasheet Indicators
+- **Datasheet emoji** (📄) displayed next to component names when datasheet URL is present
+- **Clickable datasheet links** with clear visual indication
+- **Improved component listing** with image thumbnails and datasheet indicators
+
+### Technical Implementation Details
+
+#### Image Upload Architecture
+- **LiveView uploads** configured with `allow_upload/3` in mount
+- **File processing** with `consume_uploaded_entries/3` for secure file handling
+- **Unique filename generation** to prevent conflicts
+- **Static file serving** through Phoenix.Plug.Static with `/uploads` path
+- **Database integration** with `image_filename` field in components schema
+
+#### Upload Features
+- **File type validation**: Only JPG, PNG, GIF files accepted
+- **Size limits**: Maximum 5MB per file
+- **Single file uploads**: One image per component
+- **Progress indication**: Real-time upload progress display
+- **Cancel functionality**: Users can cancel uploads in progress
+- **Preview system**: Live image preview before form submission
+
+#### File Management
+- **Automatic cleanup**: Old images deleted when new ones uploaded
+- **Orphan prevention**: Images deleted when components are removed
+- **Error handling**: Graceful fallback for missing or corrupted files
+- **Static serving**: Images served directly through Phoenix static file handler
+
 ## Development
 
 ### Running Tests