Interface NotifyAppReadyOptions

Default true: send after two animation frames so the host observes painted app DOM instead of just module evaluation. Pass false only for tests or a caller that has already waited for paint.

Default true: also send an inert, sanitized app-root HTML snapshot for cold-switch visual continuity. The host treats it as untrusted and may drop it; pass false for tests or apps with intentionally transient first paint.

Advisory source for telemetry.