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>

nix/livekit-libwebrtc/0001-shared-libraries.patch

@@ -0,0 +1,17 @@
+--- a/BUILD.gn
++++ b/BUILD.gn
+@@ -143,8 +143,12 @@
+ # target_defaults and direct_dependent_settings.
+ config("common_inherited_config") {
+   defines = [ "PROTOBUF_ENABLE_DEBUG_LOGGING_MAY_LEAK_PII=0" ]
+-  cflags = []
+-  ldflags = []
++  cflags = [ "-fvisibility=default" ]
++  ldflags = [ "-lavutil", "-lavformat", "-lavcodec" ]
++
++  if (is_linux) {
++    ldflags += [ "-Wl,--version-script=" + rebase_path("//libwebrtc.version", root_build_dir) ]
++  }
+
+   if (rtc_objc_prefix != "") {
+     defines += [ "RTC_OBJC_TYPE_PREFIX=${rtc_objc_prefix}" ]