A previous submap attempt was brittle because the script owned the
keyboard state: if it died between enter and exit, the submap stuck.
This version lets the compositor own both edges. The Lua config binds
plain Return when a layer surface with slurp's "selection" namespace
opens and unbinds it when the last one closes, so the bind exists
exactly while a pick is on screen. slurp dying for any reason (cancel,
crash, pkill, SIGKILL of the picker) fires layer.closed and the bind
evaporates — there is no code path where it leaks.
Return invokes omarchy-capture-region --take-fullscreen, which flags a
marker in XDG_RUNTIME_DIR and dismisses slurp; the picker treats an
empty slurp result with a fresh marker as the focused monitor, reusing
the existing fullscreen path. Since monitor focus follows the cursor,
that is the monitor under the slurp crosshair. The recording flow gets
monitor:NAME from the existing match, so Return during a recording
pick starts a native full-monitor capture.
The signal mode no-ops unless slurp is actually running, and both the
signal protocol and the layer-scoped bind lifecycle are verified live:
bind present only while slurp is open, real picks resolved by the
signal on both the screenshot and recording paths, no leftover binds.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>