logiguard fork: GPUI xdg-activation keyboard-focus serial fix

Single-commit orphan branch: full zed-industries/zed @ 8c74db0 source tree
with a 3-file patch applied (no upstream history).

Patch (crates/gpui_linux/src/linux/wayland/):
  - 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)

Mutter honors window activation only when the token carries the keyboard-
focus serial from wl_keyboard.enter; GPUI used a stale mouse-press serial.
See docs/tray-window-focus-wayland.md in logiguard.

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

crates/ztracing/LICENSE-AGPL

@@ -0,0 +1 @@
+../../LICENSE-AGPL

crates/ztracing/LICENSE-APACHE

@@ -0,0 +1 @@
+../../LICENSE-APACHE

crates/ztracing/LICENSE-GPL

@@ -0,0 +1 @@
+../../LICENSE-GPL

crates/ztracing/build.rs

@@ -0,0 +1,14 @@
+use std::env;
+
+fn main() {
+    if env::var_os("ZTRACING").is_some() {
+        println!("cargo::rustc-cfg=ztracing");
+    }
+    if env::var_os("ZTRACING_WITH_MEMORY").is_some() {
+        println!("cargo::rustc-cfg=ztracing");
+        println!("cargo::rustc-cfg=ztracing_with_memory");
+    }
+    println!("cargo::rerun-if-changed=build.rs");
+    println!("cargo::rerun-if-env-changed=ZTRACING");
+    println!("cargo::rerun-if-env-changed=ZTRACING_WITH_MEMORY");
+}

crates/ztracing/src/lib.rs

@@ -0,0 +1,95 @@
+pub use tracing::{Level, field};
+
+#[cfg(ztracing)]
+pub use tracing::{
+    Span, debug_span, error_span, event, info_span, instrument, span, trace_span, warn_span,
+};
+
+#[cfg(not(ztracing))]
+pub use ztracing_macro::instrument;
+
+#[cfg(ztracing)]
+const MAX_CALLSTACK_DEPTH: u16 = 16;
+
+#[cfg(all(ztracing, ztracing_with_memory))]
+#[global_allocator]
+static GLOBAL: tracy_client::ProfiledAllocator<std::alloc::System> =
+    tracy_client::ProfiledAllocator::new(std::alloc::System, MAX_CALLSTACK_DEPTH);
+
+#[cfg(not(ztracing))]
+pub use __consume_all_tokens as trace_span;
+#[cfg(not(ztracing))]
+pub use __consume_all_tokens as info_span;
+#[cfg(not(ztracing))]
+pub use __consume_all_tokens as debug_span;
+#[cfg(not(ztracing))]
+pub use __consume_all_tokens as warn_span;
+#[cfg(not(ztracing))]
+pub use __consume_all_tokens as error_span;
+#[cfg(not(ztracing))]
+pub use __consume_all_tokens as event;
+#[cfg(not(ztracing))]
+pub use __consume_all_tokens as span;
+
+#[cfg(not(ztracing))]
+#[macro_export]
+macro_rules! __consume_all_tokens {
+    ($($t:tt)*) => {
+        $crate::Span
+    };
+}
+
+#[cfg(not(ztracing))]
+pub struct Span;
+
+#[cfg(not(ztracing))]
+impl Span {
+    pub fn current() -> Self {
+        Self
+    }
+
+    pub fn enter(&self) {}
+
+    pub fn record<T, S>(&self, _t: T, _s: S) {}
+}
+
+#[cfg(ztracing)]
+pub fn init() {
+    use tracing_subscriber::fmt::format::DefaultFields;
+    use tracing_subscriber::prelude::*;
+
+    #[derive(Default)]
+    struct TracyLayerConfig {
+        fmt: DefaultFields,
+    }
+
+    impl tracing_tracy::Config for TracyLayerConfig {
+        type Formatter = DefaultFields;
+
+        fn formatter(&self) -> &Self::Formatter {
+            &self.fmt
+        }
+
+        fn stack_depth(&self, _: &tracing::Metadata) -> u16 {
+            MAX_CALLSTACK_DEPTH
+        }
+
+        fn format_fields_in_zone_name(&self) -> bool {
+            true
+        }
+
+        fn on_error(&self, client: &tracy_client::Client, error: &'static str) {
+            client.color_message(error, 0xFF000000, 0);
+        }
+    }
+
+    zlog::info!("Starting tracy subscriber, you can now connect the profiler");
+    tracing::subscriber::set_global_default(
+        tracing_subscriber::registry()
+            .with(tracing_tracy::TracyLayer::new(TracyLayerConfig::default())),
+    )
+    .expect("setup tracy layer");
+}
+
+#[cfg(not(ztracing))]
+pub fn init() {}