| An entrypoint **refuses a flag it does not know** rather than ignoring it: `refuseUnknownFlags` in `lib/core.mjs`, called immediately after `parseFlags` in all eleven bins. `parseFlags` knows no flag names by design, so an entrypoint that skips the check gets silence — the flag is parsed, never read, and the command proceeds to its default. On 2026-09-22 that default was **a real collection**: `research.mjs --totally-made-up-flag` spent 26 credits against this repository's corpus, and `audit.mjs` wrote twelve files. The same survey found a dead `--max-scrapes` in two workflows, where the page bound people believed it set was really `plan.maxScrapes` — real in `collect.yml`, and **absent** in `live-collection.yml`, whose `max_pages` was validated and then ignored | ADR-0020 |
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