logiguard fork v3: full patch set on verified 8c74db0 tree

Includes prior-session patches (carry forward so the app compiles):
  - crates/gpui/build.rs: cross-compile manifest fix
  - crates/gpui/src/platform.rs: PlatformWindow::activate_with_token trait method
  - crates/gpui/src/window.rs: Window::activate_with_token public API
  - crates/gpui_linux/src/linux/wayland/window.rs: WaylandWindow::activate_with_token + activate() keyboard-serial fix

Plus the focus-serial fix:
  - serial.rs: SerialKind::KeyboardEnter
  - client.rs: store wl_keyboard.enter serial; latest_serial_of()

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

script/shellcheck-scripts

@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+mode=${1:-error}
+[[ "$mode" =~ ^(error|warning)$ ]] || { echo "Usage: $0 [error|warning]"; exit 1; }
+
+cd "$(dirname "$0")/.." || exit 1
+
+find script -maxdepth 1 -type f -print0 |
+  xargs -0 grep -l -E '^#!(/bin/|/usr/bin/env )(sh|bash|dash)' |
+  xargs -r shellcheck -x -S "$mode" -C