Bug-check pass on top of the v2 rewrite. Five real issues fixed:
* autostart_enable used to return the exit code of the trailing `log`
call, so a failing `systemctl --user enable` was silently reported
as success. Now returns 1 with a tui_err on real failure.
* save_state wrote directly to STATE_FILE; a crash mid-write would
leave a truncated file that load_state would partially parse.
Switched to an atomic tmp + mv -f pattern.
* load_state used `source "$STATE_FILE"` which is arbitrary code
execution if a video path ever contained shell metacharacters.
Replaced with a read-based KEY=VALUE parser that only honours
LAST_VIDEO / LAST_TARGET / LAST_DIR.
* stop_mpvpaper can be called twice in quick succession (TUI stop
immediately followed by systemd's ExecStop). Wrapped the whole
body in a `flock -n` on $STATE_DIR/.stop.lock so the second caller
no-ops instead of racing against the first.
* Watcher `cleanup` trap used `[ -n VAR ] && kill`, which
short-circuits to non-zero when VAR is unset and aborts the trap
before `exit 0` under set -e. Restructured to a proper if/|| true.
Major rewrite of the runtime so the entry point is a proper gum TUI
instead of zenity dialogs, plus a handful of correctness fixes that
make it work on real Omarchy setups.
Runtime (motion-wallpaper-toggle, extracted from the installer heredoc):
* Full gum TUI: status header, monitor picker (with All monitors),
library / filesystem pickers, change-video, autostart toggle.
* State file at ~/.config/motion-wallpaper/state remembers last
video, target monitor, and last-used directory so Browse reopens
where the user was.
* Actions: toggle | start | stop | change | status.
Autostart:
* Ships a systemd user unit (motion-wallpaper.service).
* First fresh start prompts the user via gum confirm to enable it.
* Running-state menu offers a Turn autostart ON/OFF entry.
* Header shows the current autostart state.
Auto-pause:
* mpvpaper's -p is unreliable on Hyprland 0.54.x, so a small
motion-wallpaper-watcher subscribes to Hyprland's socket2 and
toggles mpv pause/resume via --input-ipc-server on fullscreen
enter/exit. Started/stopped alongside mpvpaper.
Omarchy compatibility:
* Stop path now respawns swaybg pointed at
~/.config/omarchy/current/background via setsid uwsm-app (the way
Omarchy autostarts it), instead of execing hyprpaper which isn't
present. Falls back to hyprpaper on non-Omarchy Hyprland setups.
* mpvpaper is launched under setsid uwsm-app so it survives the
Walker-spawned terminal closing.
Install / UX:
* Installer only invokes sudo/yay when packages are actually
missing, so reinstall is quiet.
* Dropped zenity; added gum + socat + libnotify.
* Custom SVG icon in the hicolor theme so Walker shows a proper
tile. Installer restarts elephant.service so the new entry/icon
appear without logout.
* .desktop flipped to Terminal=true so launchers spawn a terminal
for the TUI.
* Watcher lookup falls back to the script's own dir when PATH is
minimal (launcher-spawned terminals).
Bug fixes:
* Monitor picker was sending row-major data to zenity as one cell;
fixed (kept the correct form for the new gum picker).
* load_state / action_status no longer leak a non-zero exit code
from trailing test expressions.
* Stop path cleans up stray hyprpaper that would otherwise win the
background layer.
