* perf(mobile): open Jump back in and notifications inside the host document
* fix(mobile): gate open targets on page 3, keep notification suppression, fold double taps
* fix(mobile): report the shown session from host documents and only open this host's sessions
* test(mobile): ignore the page's location report in the agent-history notify check
* fix(mobile): let a Back before the paint gate settle the host stack
* refactor(mobile): build the route-param clear frame beside its name