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/extension_api/wit/since_v0.0.1/extension.wit

@@ -0,0 +1,70 @@
+package zed:extension;
+
+world extension {
+    use github.{github-release, github-release-options};
+    use platform.{os, architecture};
+
+    export init-extension: func();
+
+    enum downloaded-file-type {
+        gzip,
+        gzip-tar,
+        zip,
+        uncompressed,
+    }
+
+    variant language-server-installation-status {
+        checking-for-update,
+        downloaded,
+        downloading,
+        cached,
+        failed(string),
+    }
+
+    /// Gets the current operating system and architecture
+    import current-platform: func() -> tuple<os, architecture>;
+
+    /// Get the path to the node binary used by Zed.
+    import node-binary-path: func() -> result<string, string>;
+
+    /// Gets the latest version of the given NPM package.
+    import npm-package-latest-version: func(package-name: string) -> result<string, string>;
+
+    /// Returns the installed version of the given NPM package, if it exists.
+    import npm-package-installed-version: func(package-name: string) -> result<option<string>, string>;
+
+    /// Installs the specified NPM package.
+    import npm-install-package: func(package-name: string, version: string) -> result<_, string>;
+
+    /// Gets the latest release for the given GitHub repository.
+    import latest-github-release: func(repo: string, options: github-release-options) -> result<github-release, string>;
+
+    /// Downloads a file from the given url, and saves it to the given filename within the extension's
+    /// working directory. Extracts the file according to the given file type.
+    import download-file: func(url: string, output-filename: string, file-type: downloaded-file-type) -> result<_, string>;
+
+    /// Updates the installation status for the given language server.
+    import set-language-server-installation-status: func(language-server-name: string, status: language-server-installation-status);
+
+    type env-vars = list<tuple<string, string>>;
+
+    record command {
+        command: string,
+        args: list<string>,
+        env: env-vars,
+    }
+
+    resource worktree {
+        read-text-file: func(path: string) -> result<string, string>;
+        which: func(binary-name: string) -> option<string>;
+        shell-env: func() -> env-vars;
+    }
+
+    record language-server-config {
+        name: string,
+        language-name: string,
+    }
+
+    export language-server-command: func(config: language-server-config, worktree: borrow<worktree>) -> result<command, string>;
+    export language-server-initialization-options: func(config: language-server-config, worktree: borrow<worktree>) -> result<option<string>, string>;
+}