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/extension_host/Cargo.toml

@@ -0,0 +1,80 @@
+[package]
+name = "extension_host"
+version = "0.1.0"
+edition.workspace = true
+publish.workspace = true
+license = "GPL-3.0-or-later"
+
+[lints]
+workspace = true
+
+[lib]
+path = "src/extension_host.rs"
+doctest = false
+
+[features]
+test-support = []
+
+[dependencies]
+anyhow.workspace = true
+async-compression.workspace = true
+async-tar.workspace = true
+async-trait.workspace = true
+client.workspace = true
+cloud_api_types.workspace = true
+collections.workspace = true
+dap.workspace = true
+extension.workspace = true
+fs.workspace = true
+futures.workspace = true
+gpui.workspace = true
+gpui_tokio.workspace = true
+http_client.workspace = true
+language.workspace = true
+log.workspace = true
+lsp.workspace = true
+moka.workspace = true
+node_runtime.workspace = true
+paths.workspace = true
+project.workspace = true
+remote.workspace = true
+release_channel.workspace = true
+semver.workspace = true
+serde.workspace = true
+serde_json.workspace = true
+serde_json_lenient.workspace = true
+settings.workspace = true
+task.workspace = true
+telemetry.workspace = true
+tempfile.workspace = true
+toml.workspace = true
+tracing.workspace = true
+url.workspace = true
+util.workspace = true
+wasmparser.workspace = true
+wasmtime-wasi.workspace = true
+wasmtime.workspace = true
+ztracing.workspace = true
+
+[dev-dependencies]
+criterion.workspace = true
+ctor.workspace = true
+fs = { workspace = true, features = ["test-support"] }
+gpui = { workspace = true, features = ["test-support"] }
+language = { workspace = true, features = ["test-support"] }
+language_extension.workspace = true
+parking_lot.workspace = true
+project = { workspace = true, features = ["test-support"] }
+
+reqwest_client.workspace = true
+theme = { workspace = true, features = ["test-support"] }
+theme_settings.workspace = true
+theme_extension.workspace = true
+zlog.workspace = true
+
+[[bench]]
+name = "extension_compilation_benchmark"
+harness = false
+
+[package.metadata.cargo-machete]
+ignored = ["tracing"]