Installs the layerrule blur/ignore_alpha/animation integration that
breadbar's translucency depends on into a user's hyprland.lua, with a
consent-gated single marked block, timestamped backup, dry-run/--yes,
and --undo. Generates a self-contained ~/.config/hypr/bread.lua that
reads layerrules.json (bread-theme layerrules) and emits hl.layer_rule
calls, appearance fields only. Falls back to printing a snippet
(translated to hyprlang .conf syntax when relevant) rather than
writing when the config isn't a Lua hyprland.lua bread recognizes, and
refuses to install when an existing breadbar layer rule (e.g. BOS's
own dotfiles) is already found under ~/.config/hypr.
bread doctor now reports compositor integration status via a pure
filesystem check, independent of the daemon; it never installs
anything itself.
Wired as a top-level Commands::Init (not a HooksCommand variant) since
it needs diff/consent/backup/undo machinery the hooks family has no
use for.