Add a toggle for crash capture (#6824)

Crash capture stays on by default, but Trigger > Toggle > Crash Capture (or
`omarchy toggle crash-capture`) now turns the watcher off. The toggle writes the
usual flag file and stops the unit for this session; the unit checks the same
flag with ConditionPathExists, so the choice survives a logout without the unit
having to be disabled.

Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>

bin/omarchy-toggle-crash-capture

@@ -0,0 +1,18 @@
+#!/bin/bash
+
+# omarchy:summary=Toggle crash capture notifications
+
+# nf-md-robot_dead, escaped so this file reads without a Nerd Font.
+readonly CRASH_GLYPH=$'\U000f16a1'
+
+omarchy-toggle crash-capture-off
+
+# The unit checks the same flag with ConditionPathExists, so stopping and
+# starting only settles this session; the next login reads the flag itself.
+if omarchy-toggle-enabled crash-capture-off; then
+  systemctl --user stop omarchy-crash-watch.service
+  omarchy-notification-send -g "$CRASH_GLYPH" "Crash capture disabled"
+else
+  systemctl --user start omarchy-crash-watch.service
+  omarchy-notification-send -g "$CRASH_GLYPH" "Crash capture enabled"
+fi