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>

crates/livekit_api/build.rs

@@ -0,0 +1,9 @@
+fn main() {
+    prost_build::Config::new()
+        .type_attribute("SendDataResponse", "#[allow(clippy::empty_docs)]")
+        .compile_protos(
+            &["vendored/protocol/livekit_room.proto"],
+            &["vendored/protocol"],
+        )
+        .unwrap();
+}