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/onboarding/Cargo.toml

@@ -0,0 +1,46 @@
+[package]
+name = "onboarding"
+version = "0.1.0"
+edition.workspace = true
+publish.workspace = true
+license = "GPL-3.0-or-later"
+
+[lints]
+workspace = true
+
+[lib]
+path = "src/onboarding.rs"
+
+[features]
+default = []
+
+[dependencies]
+anyhow.workspace = true
+client.workspace = true
+cloud_api_types.workspace = true
+collections.workspace = true
+component.workspace = true
+db.workspace = true
+documented.workspace = true
+fs.workspace = true
+fuzzy.workspace = true
+gpui.workspace = true
+menu.workspace = true
+notifications.workspace = true
+picker.workspace = true
+project.workspace = true
+schemars.workspace = true
+serde.workspace = true
+settings.workspace = true
+telemetry.workspace = true
+theme.workspace = true
+theme_settings.workspace = true
+ui.workspace = true
+util.workspace = true
+vim_mode_setting.workspace = true
+workspace.workspace = true
+zed_actions.workspace = true
+zlog.workspace = true
+
+[dev-dependencies]
+db = {workspace = true, features = ["test-support"]}