Completes the move off Flutter's Linux embedder, which manages ~20fps at 4K
against ~144fps for the same Dart code in Chrome (measured end-to-end: the real
app, fullscreen at 4K, sustains 144fps scrolling a 300-note list).
`linux/` is gone. Its icons and .desktop installer move to `desktop/`, since
those are still needed and are not Flutter platform scaffolding. install_arch.sh
now builds the web bundle plus an AOT wrapper; run.sh does the same for
development.
Four things this took to get right, each found by actually installing and
launching the package rather than assuming:
- `dart compile exe` refuses to build the package: transitive dependencies
(sqlite3, objective_c) have native build hooks. `dart build cli` handles them,
and emits bin/ + lib/, so the wrapper resolves its assets at ../web.
- `options=('!strip')` is load-bearing. makepkg stripped the AOT executable
(7.0M -> 5.7M), discarding the embedded snapshot; the result still ran but was
the bare Dart VM printing a usage message instead of the app.
- No hard browser dependency. Declaring `depends=('chromium')` made makepkg
install it, and this machine has a policy that uninstalls chromium three
seconds later, which then failed dependency resolution. The wrapper discovers
whatever browser exists (Thorium included) and TODO_BROWSER overrides.
- The server no longer dies with the browser process. Chrome exits immediately
when handing off to an instance that owns the profile -- or when a stale
SingletonLock is left behind -- which killed the server out from under a live
window.
Chrome gets --class=todo so WM_CLASS matches the .desktop StartupWMClass and
the taskbar shows the app icon rather than a browser icon.
Verified: `todo` launches, serves, opens a window titled todo, and recovers the
backlog through the wrapper.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Provides a one-command setup for Arch Linux (builds flutter-bin from
the AUR via makepkg) and Ubuntu/Debian (apt if a flutter package
exists, otherwise the upstream SDK clone), plus the Linux desktop
build toolchain, then runs `flutter run -d linux`.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
