Deliver the unified View and Component model with retained Runtime, reactive scopes, Context, Behaviors, events, Actions, styles, Resources, Data, official UI Components, and Playground examples.\n\nVerification: make check and make load pass in the independent repository; sibling Ebox core tests pass 544/544.
Implement the P0 View grammar, expr bridge, stateless view Components, and Ebox mount path in a new independent package. Include bilingual architecture and implementation documents plus contract tests.
