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#16 Real-input parity corpus (9/9) and watcher#325's answers in the spec - #18

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Oct 2, 2026
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Closes #16. Refs #1.

Real-input parity. Watcher's 9-input export (CannObserv/watcher#325, issuecomment-5958475061) is committed verbatim under tests/fixtures/parity/real/. The raw blobs it names were copied from gs://co-gcs-blobs before Replicator's 7-day TTL expires them (2026-10-04 to 2026-10-09) and gzipped (232K). The new tests check that each blob's sha256 equals input_digest, and that extract() reproduces Watcher's recorded_fingerprint and spec_fingerprint: 9/9. A live run the same day through the production path also passed 9/9 (GCS read as the writer, extraction in the child).

Spec, amended 2026-10-02:

  • Open Question 1 answered (yes, refreshed).
  • D5 lockstep accepted by Watcher (==0.19.7 at #325).
  • Reader identity co-gcs-blob-reader.
  • Watcher's downtime change: no re-issue while Processor isn't consuming; Processor works through the backlog on restart.
  • Hard ordering satisfied 2026-10-01.
  • §7 real samples done.

The dead-letter / reaper interaction is #17, which also amends §4's DLQ note and DEPLOYMENT.md's dead-letter line.

🤖 Generated with Claude Code

gregoryfoster and others added 2 commits October 2, 2026 18:45
… 9/9

Watcher's export from watcher#325 (issuecomment-5958475061) is kept verbatim,
along with the raw blobs it names. The blobs were copied from gs://co-gcs-blobs
on 2026-10-02, before Replicator's 7-day TTL (they expire 2026-10-04..09), and
gzipped (232K). Each blob's sha256 equals input_digest, and extract()
reproduces Watcher's recorded_fingerprint and spec_fingerprint.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
…pted, reader identity, downtime, real parity 9/9

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
gregoryfoster and others added 2 commits October 2, 2026 20:41
…ersion

Pinning it would fail every co-core bump on metadata, even with identical output,
and passing would mean editing a verbatim export. The pin test owns the version.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
…lobs, never edited or regenerated

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
@gregoryfoster
gregoryfoster merged commit add36b8 into main Oct 2, 2026
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gregoryfoster deleted the 16-real-parity branch October 2, 2026 21:03
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Real-input parity corpus from Watcher's export; record watcher#325's answers in the spec

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