pub fn set_launch_deeplink(route: &str)Expand description
Record the host’s launch deep link before launch_with runs (docs/navigation.md).
Platform glue only — apps navigate with navigate. DAY_DEEPLINK, where a process
environment exists, takes precedence.
UI THREAD ONLY: the slot is thread-local, because the web host that seeds it runs on the one
thread there is. Glue that may be called from another thread (a notification tap arriving on a
JNI or delegate thread) wants request_route, which is thread-safe and works at any
lifecycle stage.