Adds request-context.ts shim with runWithExecutionContext() and
getRequestExecutionContext() so Cloudflare Workers ctx is accessible
anywhere in the call stack without manual threading.
- New shims/request-context.ts with ALS keyed on Symbol.for('vinext.requestContext.als')
- app-router-entry.ts wraps each request in runWithExecutionContext(ctx, ...)
- app-rsc-entry.ts generated code imports the helpers for downstream use
- deploy.ts generated worker entry forwards ctx in fetch(request, env, ctx)
- kv-cache-handler.ts uses getRequestExecutionContext() ?? this.ctx
- 8 new tests in tests/request-context.test.ts
James Anderson
36f1775122