Plan 016 B2, phase 1. Below 600px the grid drops its sidebar column, `bottom-nav` becomes the primary navigation, and the shell fits the viewport instead of scrolling sideways out of it. 600 rather than the sidebar's own 900, because 900 is a laptop and the answer there is a narrower sidebar, which is still a sidebar. Under 600 there is no room for one at all: 360px of viewport over a 200px nav is not a layout. **The tab bar is four destinations and a way to everything else.** Three to five is where touch targets stop being thumb-sized -- eleven over 360px is 32px each -- so the four are the ones plan 016's subset says a phone is for, and "More" opens the *existing* `app-sidebar` in a drawer rather than listing the destinations a second time. Two lists is two places to add the next view to. That reuse has a cost this found the hard way: a shared component brings its `data-testid`s with it, so rendering the drawer's sidebar unconditionally put a second `nav-home` (and ten siblings) in the DOM and **failed 30 existing specs** with "resolved to 2 elements" -- on a desktop viewport, where this element is `display: none` and the drawer can never open. It renders only while the drawer is open, and the component test asserts the absence, because the failure is invisible from inside the component and lands in files nobody touched. **What made the shell overflow was minimums, not padding.** Measured at 360px: the body was 652px wide, because a `min-width` in a flex row is a hard floor and a grid item's implicit minimum is its content. So `min-width: 0` on the boxes between the viewport and the content, and each component stands its own non-essential parts down in its *own* stylesheet -- search-bar's 200px floor, job-indicator's label (the visible one; the live region that announces it is untouched), audio-player's seek bar and volume. A media query inside a shadow root is answered by the viewport, so this is the component saying what it drops rather than the shell reaching in. Volume goes because the hardware keys own it on a phone, which is the same reason mediacontrols' Android handler implements no volume callback. Seeking goes because 4px is not a thumb target; it belongs to the full-screen now-playing view, which is the next phase. An existing spec therefore asserts the opposite of what it did: layout-overflow's 320px case used to require that the 464px behind `overflow: hidden` could be *scrolled to*, which was the remedy available while the shell had one layout. It reflows now -- 320px in a 320px viewport, exactly -- and reflow is what WCAG 1.4.10 asked for.
YellowJacket
Music how it was meant to bee.
YellowJacket is a fast, cross-platform desktop music player for your local collection. It plays your files, keeps your library tidy, and helps you discover and organize your music — all in a clean, responsive interface. No accounts, no streaming, no telemetry: just your music on your machine.
Runs on Linux, macOS, and Windows.
Features
Play your music
- Plays MP3, FLAC, OGG Vorbis, and WAV
- Play, pause, seek, and volume control with a mute toggle
- Gapless, glitch-free seeking backed by a read-ahead buffer
- A queue you can add to, reorder, and shuffle, with play-next support
- Shuffle and repeat (off / all / one)
- Picks up right where you left off — remembers your track, position, and volume between sessions
- Media-key and MPRIS support on Linux, so your desktop's playback controls just work
Keep your library organized
- Point it at your music folders and it scans them automatically
- Reads tags and embedded cover art, and de-duplicates artwork so it isn't stored twice
- Incremental sync — only new or changed files get reprocessed, and deleted files are cleaned up
- Browse by album, artist, or genre, or search across everything
- Mark favorites and see what you've been listening to with play history
- Edit track tags directly when something's off
Playlists
- Create playlists, drag tracks in, and reorder them
- Smart playlists that build themselves from rules (by genre, rating, play count, and more)
- Pin a default playlist and spot duplicate tracks at a glance
Discover and clean up (powered by MusicBrainz)
- Explore — browse artists, releases, and genres from the MusicBrainz catalog, not just what's already in your library
- Auto-tag — match your files against MusicBrainz to fill in correct artist, album, and track metadata, with a review step before anything is written
- Lyrics search — find a track by a line you remember
Install
Download the latest build for your platform from the releases page.
| Platform | Download |
|---|---|
| Linux | yellowjacket-linux-amd64 |
| macOS | yellowjacket-darwin-universal.app.zip (Apple Silicon + Intel) |
| Windows | yellowjacket-windows-amd64.exe |
Prefer to build it yourself? See Building from source.
Getting started
- Launch YellowJacket.
- Open Settings and add the folder(s) where your music lives.
- Let the initial scan finish — you'll see progress as it works.
- Browse by album, artist, or genre, queue something up, and press play.
Your library and settings are stored locally:
| Linux / macOS | Windows | |
|---|---|---|
| Config | ~/.config/yellowjacket/ |
%LOCALAPPDATA%\yellowjacket\config |
| Library data | ~/.local/share/yellowjacket/ |
%LOCALAPPDATA%\yellowjacket\data |
Building from source
YellowJacket is built with Go and a Lit/TypeScript frontend, bridged by the Wails framework.
Prerequisites
| Tool | Version |
|---|---|
| Go | 1.25+ |
| Node.js | 22+ |
| pnpm | 10+ |
| Wails CLI | v3 — vendored, no install needed (go tool wails3) |
The Wails v3 CLI resolves from the tool block in go.mod, so there is nothing
to install globally; make setup fetches it with the rest of the tooling.
On Linux, install the system libraries Wails needs. v3 builds against GTK4 + WebKitGTK 6.0 by default:
sudo apt-get install libasound2-dev libgtk-4-dev libwebkitgtk-6.0-dev # Debian/Ubuntu
sudo pacman -S alsa-lib gtk4 webkitgtk-6.0 # Arch
A machine without webkitgtk-6.0 can still build with -tags gtk3 against the
older WebKit2GTK 4.1 stack, but that is an escape hatch, not what CI or a
release builds.
macOS and Windows need no extra system packages. Run go tool wails3 doctor to
check your environment.
Build
make setup # install tooling and git hooks
make dev # run with hot-reload
make build-prod # produce a release binary
More detail for contributors lives in
docs/dev/overview.md and CLAUDE.md.