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test(sweep): stop the --days 0 check from racing a one-second cutoff

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Measured, not guessed: the check failed 7 runs in 20, not once. The cause is
a same-second collision, reproduced deterministically - a notice minted at
20260801205457 against a cutoff of 20260801205457 survives, the same notice
60s older is closed.

coord-sweep.sh is right and is left alone. Its cutoff is second-granular and
it closes strictly older messages, which spares rather than closes at the
boundary; at any real --days value one second is unobservable. Relaxing that
guard to <= would make a destructive script more aggressive to satisfy a test.

So the test was claiming what the code does not promise: that a notice minted
earlier in the same run is necessarily older at second granularity. Under a
second of work separates the two, so it was a coin flip. Aged by 5 seconds
through the existing age_it, which keeps it well inside the default 14-day
window and clear of the boundary. No sleep: that would have hidden the answer
rather than fixed it.

Selftest 182 -> 183, 20/20 green.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01GfDGWyyhnM26J4p93GSk2L
This commit is contained in:
Kjell Tore Guttormsen 2026-08-01 23:01:32 +02:00
commit 8e207c6c49
3 changed files with 12 additions and 4 deletions
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CLAUDE.md
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@ -16,7 +16,7 @@ marketplace plugin. Three components, one boundary:
`coord-done.sh` archives, `coord-count.sh` counts without delivering,
`coord-sweep.sh` closes the aged FYI backlog machine-wide.
Everything is pinned by `coord-selftest.sh`
(182 checks, throwaway mailbox via `CLAUDE_COORD_DIR`).
(183 checks, throwaway mailbox via `CLAUDE_COORD_DIR`).
**`coord-sweep.sh` is the only path that closes a message with no human in
the loop, and every constraint on it follows from that.** It may close exactly
@ -208,7 +208,7 @@ obligations in another repo.
- Zero dependencies everywhere: bash + coreutils in the engine, `node:`
builtins only in hook and tests.
- TDD: no behavior change without a failing selftest check first.
`bash scripts/coord-selftest.sh` must exit 0 (182/182),
`bash scripts/coord-selftest.sh` must exit 0 (183/183),
`bash scripts/board-selftest.sh` must exit 0 (51/51) and
`bash scripts/route-selftest.sh` must exit 0 (73/73).
- English for all code, docs, and commit messages (public repo). Norwegian