## No behaviour change. This is the work order retracting a documented
false positive.
I went to convert the `done`/`archived` filters in
`usage-limit-detector.ts`, reasoning that on a renamed board a provider
rate limit would pause already-finished work. I wrote the conversion —
and only then read the note a previous worker had left directly above
it:
> *"The FIRST thing I suspected there — the `done`/`archived` terminal
filter — turned out to be a **FALSE POSITIVE**: its revert stayed green,
because the lane check already excludes finished cards."*
**They are right and I was wrong.** A terminal card is already excluded
downstream: `taskUsesProvider` resolves the task's active lane, a
finished card matches no active lane, so it resolves no providers and
cannot be affected. The suite pins exactly this — `pauses a PEER
executing in the renamed WIP column` asserts `FN-SHIPPED` is not paused.
My conversion is reverted. It changed nothing at runtime and would have
lowered the census count while behaviour stayed identical — the precise
shape this program keeps warning about, produced by me this time.
## Why a marker and not just the existing prose
The note was already there and I walked into it anyway, because **the
census kept listing this file as 4 unconverted guards**. The work order
advertised the work; the reasoning against it lived in a comment you
only reach after you have started. Prose informs a reader who is already
looking; a marker informs the *instrument*, so the file drops out of the
work order.
Two distinct reasons are recorded rather than one blanket marker,
because they are not the same argument:
- **the prefilter** is a deliberate cheap **superset** (#2672 review).
Converting it reintroduces the whole-board resolution that review
removed. Literals are safe here in the direction that matters — a
renamed board declares no `done`/`archived` id, so nothing is wrongly
*excluded*.
- **the final filter** is redundant with the lane check, and that
redundancy is already proven by an existing test.
## Census
| | before | after |
|---|---|---|
| `usage-limit-detector.ts` | 4 | **0** |
| repo backlog | 437 | **433** |
| DELIBERATE-LITERAL (reviewed) | 38 | **42** |
Every one of the 4 is a marker, not a conversion. The backlog moved
because reviewed literals left it honestly, not because behaviour
changed.
## Verification
`usage-limit-detector.test.ts` **58 passed**, unchanged before and after
· `pnpm test:gate` **10 / 158 / 487 / 71** · `pnpm lint` clean · engine
`tsc --noEmit` **0 errors** · `--strict` exits 0.
Co-authored-by: Claude Opus 5 (1M context) <noreply@anthropic.com>
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