Drives the full real path on --features enterprise,deno_core,private: push 3
same-key debounced flow jobs (real push() -> maybe_debounce collapses the
batch), a real worker pulls the survivor (real pull() -> maybe_apply_debouncing
claim+accumulate) and executes the deno flow, then asserts the executed result
is the full accumulated set [1,2,3] and the two superseded messages are skipped.
Complements the in-process unit tests with a genuine worker-execution run.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>