logiguard fork v3: full patch set on verified 8c74db0 tree

Includes prior-session patches (carry forward so the app compiles):
  - crates/gpui/build.rs: cross-compile manifest fix
  - crates/gpui/src/platform.rs: PlatformWindow::activate_with_token trait method
  - crates/gpui/src/window.rs: Window::activate_with_token public API
  - crates/gpui_linux/src/linux/wayland/window.rs: WaylandWindow::activate_with_token + activate() keyboard-serial fix

Plus the focus-serial fix:
  - serial.rs: SerialKind::KeyboardEnter
  - client.rs: store wl_keyboard.enter serial; latest_serial_of()

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

crates/inspector_ui/build.rs

@@ -0,0 +1,20 @@
+fn main() {
+    let cargo_manifest_dir = std::env::var("CARGO_MANIFEST_DIR").unwrap();
+    let mut path = std::path::PathBuf::from(&cargo_manifest_dir);
+
+    if path.file_name().as_ref().and_then(|name| name.to_str()) != Some("inspector_ui") {
+        panic!(
+            "expected CARGO_MANIFEST_DIR to end with crates/inspector_ui, but got {cargo_manifest_dir}"
+        );
+    }
+    path.pop();
+
+    if path.file_name().as_ref().and_then(|name| name.to_str()) != Some("crates") {
+        panic!(
+            "expected CARGO_MANIFEST_DIR to end with crates/inspector_ui, but got {cargo_manifest_dir}"
+        );
+    }
+    path.pop();
+
+    println!("cargo:rustc-env=ZED_REPO_DIR={}", path.display());
+}