Experimental Branch Update: Nomad Mk2 Release

[Jstudner]

Sorry for the delay, MK2 took longer than expected now that I am back in classes. It’s a big update with reliability and UX as the main goals. The core features are ready for testing on the experimental branch, please try it out and file any bugs you see. (there's bound to be plenty)

What’s new

• New indexing system - non-blocking background indexing, safer on power-loss, and editable without a full reindex in many cases. Much better handling of very large libraries.
• Menu overhaul - global search (covers, title, directory, file type) and a Dark Mode toggle.
• Shows & Music - season-folder support + root-episode support for shows; music split into music.html + playlist.html, folder-based playlists, shuffle/loop/downloads, and improved sorting.
• Flash Mode (Admin) - reflash/update the device from the Admin Panel without opening the case.
• Admin panel password & locking - fixed overlay and improved lock behavior.
• Frontend index checks - UI verifies the backend index on startup (WIP: smoother load flow coming).
• Resume tracking - Movies & Shows remember playback position and offer Play/Resume; Menu shows recent items.
• Books (WIP) - planning a lot, but focusing on native EPUB & audiobook support.
• Case tweaks - new clip/guard details added (feedback welcome, I am not a fan lol).
• General reliability, performance, and UX improvements across the board.

This is experimental, if you want the newest features and can help test, grab the experimental branch. Your feedback and bug reports are hugely appreciated and will help get MK2 merged into main.