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/drop-test-dbs

@@ -0,0 +1,16 @@
+#!/usr/bin/env bash
+
+databases=$(psql --tuples-only --command "
+  SELECT
+    datname
+  FROM
+    pg_database
+  WHERE
+    datistemplate = false
+    AND datname like 'zed-test-%'
+")
+
+for database in $databases; do
+  echo $database
+  dropdb $database
+done