- Updated WebPlatformService.takePicture() to use getUserMedia for webcam capture on desktop browsers, providing a live video preview and capture button in an overlay.
- Retained file input with capture attribute for mobile browsers and as a fallback if webcam access fails.
- Ensured interface and factory pattern compatibility; no changes required in PhotoDialog.vue or PlatformServiceFactory.
- Added a stub for writeAndShareFile to satisfy the PlatformService interface on web.