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/git_ui/Cargo.toml

@@ -0,0 +1,93 @@
+[package]
+name = "git_ui"
+version = "0.1.0"
+edition.workspace = true
+publish.workspace = true
+license = "GPL-3.0-or-later"
+
+[lints]
+workspace = true
+
+[lib]
+name = "git_ui"
+path = "src/git_ui.rs"
+
+[features]
+test-support = ["multi_buffer/test-support", "remote_connection/test-support"]
+
+[dependencies]
+agent_settings.workspace = true
+alacritty_terminal.workspace = true
+anyhow.workspace = true
+askpass.workspace = true
+buffer_diff.workspace = true
+call.workspace = true
+collections.workspace = true
+component.workspace = true
+db.workspace = true
+editor.workspace = true
+file_icons.workspace = true
+fs.workspace = true
+futures.workspace = true
+futures-lite.workspace = true
+fuzzy.workspace = true
+fuzzy_nucleo.workspace = true
+git.workspace = true
+gpui.workspace = true
+itertools.workspace = true
+language.workspace = true
+language_model.workspace = true
+linkify.workspace = true
+log.workspace = true
+markdown.workspace = true
+menu.workspace = true
+multi_buffer.workspace = true
+notifications.workspace = true
+panel.workspace = true
+picker.workspace = true
+project.workspace = true
+prompt_store.workspace = true
+proto.workspace = true
+rand.workspace = true
+remote_connection.workspace = true
+remote.workspace = true
+schemars.workspace = true
+serde.workspace = true
+serde_json.workspace = true
+settings.workspace = true
+smallvec.workspace = true
+strum.workspace = true
+telemetry.workspace = true
+theme.workspace = true
+theme_settings.workspace = true
+time.workspace = true
+time_format.workspace = true
+ui.workspace = true
+ui_input.workspace = true
+util.workspace = true
+watch.workspace = true
+workspace.workspace = true
+zed_actions.workspace = true
+zeroize.workspace = true
+ztracing.workspace = true
+tracing.workspace = true
+[target.'cfg(windows)'.dependencies]
+windows.workspace = true
+
+[dev-dependencies]
+ctor.workspace = true
+editor = { workspace = true, features = ["test-support"] }
+gpui = { workspace = true, features = ["test-support"] }
+indoc.workspace = true
+pretty_assertions.workspace = true
+project = { workspace = true, features = ["test-support"] }
+rand.workspace = true
+settings = { workspace = true, features = ["test-support"] }
+task.workspace = true
+unindent.workspace = true
+workspace = { workspace = true, features = ["test-support"] }
+zlog.workspace = true
+remote_connection = { workspace = true, features = ["test-support"] }
+
+[package.metadata.cargo-machete]
+ignored = ["tracing"]