logiguard fork: GPUI xdg-activation keyboard-focus serial fix

Single-commit orphan branch: full zed-industries/zed @ 8c74db0 source tree
with a 3-file patch applied (no upstream history).

Patch (crates/gpui_linux/src/linux/wayland/):
  - serial.rs: add SerialKind::KeyboardEnter
  - client.rs: store wl_keyboard.enter serial; add latest_serial_of()
  - window.rs: activate() uses keyboard-enter serial (Mutter focus gate)

Mutter honors window activation only when the token carries the keyboard-
focus serial from wl_keyboard.enter; GPUI used a stale mouse-press serial.
See docs/tray-window-focus-wayland.md in logiguard.

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

script/clippy

@@ -0,0 +1,23 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+
+if [[ ! " $* " == *" -p "* && ! " $* " == *" --package "* ]]; then
+    set -- "$@" --workspace
+fi
+
+set -x
+"${CARGO:-cargo}" clippy "$@" --release --all-targets --all-features -- --deny warnings
+
+# If local, run other checks if we have the tools installed.
+if [[ -z "${GITHUB_ACTIONS+x}" ]]; then
+    which cargo-machete >/dev/null 2>&1 || exit 0
+    cargo machete
+
+    which typos >/dev/null 2>&1 || exit 0
+    typos --config typos.toml
+
+    which buf >/dev/null 2>&1 || exit 0
+    buf lint crates/proto/proto
+    buf format --diff --exit-code crates/proto/proto
+fi