Media Management & Annotation

Photos are the primary evidence and instruction tool for installers. This skill covers how to handle them efficiently.

Image Lifecycle

1. Capture: Technician takes a photo via the mobile-first UI.
2. Compression (Client-side): Reduce size before upload to save data and speed up sync (e.g., browser-image-compression).
3. Upload: Store in S3-compatible storage (Hetzner Object Storage or similar).
4. Display: Serve via CDN with appropriate caching.

Annotation Workflow

Technicians need to "point" at the placement on a photo.

• Tools: Use react-konva or a simple HTML5 Canvas layer.
• Markers:
  • Red circles for drilling points.
  • Arrows for pipe routes.
  • Text labels for heights/distances.
• Persistence: Save annotations as JSON (layers) or flattened "baked" images.

Performance Optimization

• Lazy Loading: Crucial for survey pages with dozens of photos.
• Thumbnails: Generate low-res thumbnails for list views to minimize memory usage on mobile devices.
• AVIF/WebP: Prefer modern formats for storage and delivery.

Security & Privacy

• Watermarking: Optional branding on photos.
• Access Control: Photos should only be accessible via signed URLs or authenticated sessions.