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/markdown/Cargo.toml

@@ -0,0 +1,52 @@
+[package]
+name = "markdown"
+version = "0.1.0"
+edition.workspace = true
+publish.workspace = true
+license = "GPL-3.0-or-later"
+
+[lints]
+workspace = true
+
+[lib]
+path = "src/markdown.rs"
+doctest = false
+
+[features]
+test-support = [
+    "gpui/test-support",
+    "util/test-support"
+]
+
+[dependencies]
+anyhow.workspace = true
+base64.workspace = true
+collections.workspace = true
+futures.workspace = true
+gpui.workspace = true
+html5ever.workspace = true
+language.workspace = true
+linkify.workspace = true
+log.workspace = true
+markup5ever_rcdom.workspace = true
+mermaid-rs-renderer.workspace = true
+pulldown-cmark.workspace = true
+settings.workspace = true
+stacksafe.workspace = true
+sum_tree.workspace = true
+theme.workspace = true
+theme_settings.workspace = true
+ui.workspace = true
+util.workspace = true
+
+[dev-dependencies]
+assets.workspace = true
+env_logger.workspace = true
+fs = {workspace = true, features = ["test-support"]}
+gpui = { workspace = true, features = ["test-support"] }
+gpui_platform.workspace = true
+language = { workspace = true, features = ["test-support"] }
+languages = { workspace = true, features = ["load-grammars"] }
+node_runtime.workspace = true
+settings = { workspace = true, features = ["test-support"] }
+util = { workspace = true, features = ["test-support"] }