Formats like .mkv, .avi, .wmv, .ts, .m2ts and .tiff are not natively
supported by browsers and would stall silently in Doom Scroll mode.
Add src/lib/browser-media.ts with BROWSER_VIDEO_EXTENSIONS (.mp4,
.webm, .mov, .m4v), BROWSER_IMAGE_EXTENSIONS (.jpg, .jpeg, .png, .gif,
.webp, .bmp), and an isBrowserPlayable() helper that extracts the
extension without importing Node's path module.
Filter doomScrollItems in MixedView, MoviesView, and TvView using this
helper so only natively renderable files are passed to DoomScrollView.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
