logiguard fork v2: patched GPUI on verified 8c74db0 tree

Rebuilt from the exact zed-industries/zed @ 8c74db00c4053d6c0a9037863d7bd048658da4ca
tree (previous orphan was based on a stale/wrong fetch). Same 3-file patch:
  - 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)

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

script/lib/squawk.toml

@@ -0,0 +1,11 @@
+excluded_rules = [
+    # We use `serial` already, no point changing now.
+    "prefer-identity",
+
+    # We store timestamps in UTC, so we don't care about the timezone.
+    "prefer-timestamptz",
+
+    "prefer-big-int",
+    "prefer-bigint-over-int",
+]
+pg_version = "15.0"