MediaManager API

Available endpoints:

• GET /thumbnail/{organization}/{spec}/{filename}/{size} - Generate thumbnail
• GET /deepzoom/{organization}/{spec}/{filename} - Generate DeepZoom tiles
• GET /api/webresource/{organization}/{spec}/{filename} - Get original image
• GET /health - Health check
• GET /metrics - Prometheus metrics
• Note: Viewer functionality has been moved to a separate gRPC service