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>

rust-toolchain.toml

@@ -0,0 +1,9 @@
+[toolchain]
+channel = "1.95.0"
+profile = "minimal"
+components = [ "rustfmt", "clippy", "rust-analyzer", "rust-src" ]
+targets = [
+    "wasm32-wasip2", # extensions
+    "wasm32-unknown-unknown", # gpui on the web
+    "x86_64-unknown-linux-musl", # remote server
+]