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>

livekit.yaml

@@ -0,0 +1,10 @@
+development: true
+port: 7880
+rtc:
+  udp_port: 7882
+  tcp_port: 7881
+  use_external_ip: false
+keys:
+  devkey: secret
+logging:
+  level: debug