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/collab_ui/Cargo.toml

@@ -0,0 +1,78 @@
+[package]
+name = "collab_ui"
+version = "0.1.0"
+edition.workspace = true
+publish.workspace = true
+license = "GPL-3.0-or-later"
+
+[lints]
+workspace = true
+
+[lib]
+path = "src/collab_ui.rs"
+doctest = false
+
+[features]
+default = []
+test-support = [
+    "call/test-support",
+    "client/test-support",
+    "collections/test-support",
+    "editor/test-support",
+    "gpui/test-support",
+    "project/test-support",
+    "settings/test-support",
+    "util/test-support",
+    "workspace/test-support",
+
+    "title_bar/test-support",
+]
+
+[dependencies]
+anyhow.workspace = true
+call.workspace = true
+channel.workspace = true
+client.workspace = true
+collections.workspace = true
+db.workspace = true
+editor.workspace = true
+feature_flags.workspace = true
+futures.workspace = true
+fuzzy.workspace = true
+gpui.workspace = true
+livekit_client.workspace = true
+menu.workspace = true
+notifications.workspace = true
+picker.workspace = true
+project.workspace = true
+release_channel.workspace = true
+rpc.workspace = true
+serde.workspace = true
+serde_json.workspace = true
+settings.workspace = true
+smallvec.workspace = true
+telemetry.workspace = true
+theme.workspace = true
+theme_settings.workspace = true
+time.workspace = true
+title_bar.workspace = true
+ui.workspace = true
+util.workspace = true
+workspace.workspace = true
+zed_actions.workspace = true
+
+[dev-dependencies]
+call = { workspace = true, features = ["test-support"] }
+client = { workspace = true, features = ["test-support"] }
+collections = { workspace = true, features = ["test-support"] }
+editor = { workspace = true, features = ["test-support"] }
+gpui = { workspace = true, features = ["test-support"] }
+notifications = { workspace = true, features = ["test-support"] }
+
+project = { workspace = true, features = ["test-support"] }
+rpc = { workspace = true, features = ["test-support"] }
+settings = { workspace = true, features = ["test-support"] }
+
+util = { workspace = true, features = ["test-support"] }
+
+workspace = { workspace = true, features = ["test-support"] }