- Make element snapshots immutable and preserve ordinary Python component

argument binding, async provider context, stable setters, and deferred updates.

- Stage reconciliation publication and roll back failed renders; retire surfaces

after native mount failures. Validate commits without copying unrelated records.

- Enforce shared component, event, command, and service contracts, including

nested values, property resets, recreation, and native result types.

- Use one list request protocol on every backend, stable dataset and item

revisions, bounded row ownership, and public indices that exclude headers.

- Complete nested native stack ownership, input composition and selection,

dynamic text sizing, cancelable native work, and durable Android notifications.

- Test the real browser renderer and native lifecycle behavior. Package the Inbox

extension separately and run reference-app acceptance on both mobile CI jobs.

- Remove permissive transaction decoders, alternate headless list rendering,

obsolete compatibility branches, and unrestricted device-option dictionaries.

These pre-1.0 changes intentionally break superseded APIs.