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>

.cargo/collab-config.toml

@@ -0,0 +1,5 @@
+# This file is used to build collab in a Docker image.
+# In particular, we don't use clang.
+[build]
+# v0 mangling scheme provides more detailed backtraces around closures
+rustflags = ["-C", "symbol-mangling-version=v0", "--cfg", "tokio_unstable"]