Reuse supervised raw-byte capture with a 4 MiB aggregate budget. Drain package-manager output through physical close, reject oversized complete replies, and let verbose installs finish with explicitly bounded failure diagnostics. Preserve existing command resolution, selected environment/cwd, runtime prerequisites and signal policy.
Own human progress backpressure and final write acknowledgements without ending borrowed stderr. Continue draining after destination failures and observe outstanding write rejections through their error event.
Validation: 152 checks across 12 focused files, followed by a 44-check rerun including two additional no-deadline waiter controls; typecheck/lint, docs and discovery pass. The public oversized-metadata regression fails on 4f7b5fb60. Fixtures execute owned Node/fake npm/Bun commands; no actual package install or registry request. Native Windows/Linux and exhausting-output/OOM scenarios were not run.
Small completed CLI checks return identical replies and token estimates. Six sequential baseline/candidate tasks separate first-process and two warm repeats; no speedup, true-cold or large-install memory claim. Existing descendant cleanup and signal behavior is outside this output-bound fix.
Closes#4888.
Normalize the unambiguous root --update alias before output handling and
through direct createCli().serve calls. Reuse the existing output-value scan
and canonical update command, including selected environment, installation
ownership, Windows-aware launch, verification, maintenance and failure facts.
Retain option data and help/check precedence. Reject remaining Incur install
requests: update:false does not disable its explicit installer in0.6.1.
Remove the superseded output-only normalizer name and update its consumers.
Validation:123focused checks/7files pass, including compiled CLI with an owned
rejecting fake npm and direct serve across5formats. Original argument owner
fails6new controls/7pass; isolated baseline fails8workflow checks/2controls
pass. Static/docs/discovery1561 pass. Both scoped source reviews are clear.
Six completed equivalent current-version workflows compare baseline canonical
update with the alias; complete replies identical. Native Windows upgrade,
real package-manager installation and full install costs remain unverified.
The first baseline escaped a Vitest-only builtin mock and installed REA in the
pinned Node global prefix. Removed the newly added package and verified original
Node/npm/Corepack tools. Re-ran using the real builtin spy with synchronized
ESM exports, an independently rejecting PATH shim and owned npm prefix/cache.
Keep heavy tests/profiling stopped. Independent updater output bounds remain
tracked in #4888 rather than changing collection policy in this routing fix.
Fixes#4883
morluto