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/ztracing/Cargo.toml

@@ -0,0 +1,22 @@
+[package]
+name = "ztracing"
+version = "0.1.0"
+edition.workspace = true
+publish.workspace = true
+license = "GPL-3.0-or-later"
+
+[lints]
+workspace = true
+
+[features]
+tracy = ["tracing-tracy", "tracy-client"]
+
+[dependencies]
+zlog.workspace = true
+tracing.workspace = true
+
+tracing-subscriber = "0.3.22"
+tracing-tracy = { version = "0.11.4", optional = true, features = ["enable", "ondemand"] }
+tracy-client = { version = "0.18.2", optional = true, features = ["enable", "ondemand"] }
+
+ztracing_macro.workspace = true