Two monitors can keep different wallpapers. `set --output` targets one
awww output, writes that output's bread-theme files, and updates
~/.config/breadpaper/current.json without clobbering the other. Global
set still runs wal + bread-theme reload and stamps every known output.
`apply` and listen-on-monitor-connect restore the saved map. The library
picker binds to its monitor and applies to that output.
Scan ~/Pictures/Wallpapers and /usr/share/backgrounds/bos (configurable)
and open a bread-theme GTK picker via `breadpaper library` (alias browse).
Clicking a thumbnail runs the existing set path. listen honors
bread.command.paper.library by spawning that picker.
Pin bread-utils to v0.7.2 (command/subscribe). Add a long-running
listen subcommand that subscribes to bread.command.paper.**, calls
set() on set, and emits bread.paper.set.done / .failed. Fail-silent
if breadd is down. No slideshow verbs. See EVENTS.md.
Link bread-utils v0.7.1 (bread-client) and publish
{ "path": "<wallpaper>" } once awww + wal + bread-theme reload
all succeed. Silent no-op if breadd is down. breadpaper is
CLI-only — no watch subscriber; modules should bread.exec
("breadpaper set …"). See EVENTS.md.
