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docs(lane): head-exact gate evidence, and the run that was not 

Full gate GREEN on the committed head 8802d6a, all 8 stages, log
20260820T072102Z-3009434.

Two provenance corrections recorded rather than smoothed over:

  - The first attempt on that same head failed 07-sweep on
    composition_overhead_under_ten_percent, a perf budget unrelated to
    this lane's surface, green in isolation and already recorded as a
    recurring signature on the panel-mapping-generation ledger. Both
    runs are kept. No cause is claimed for the first --- only that the
    second is the head-exact evidence.
  - The earlier 20260819T190930Z-2647615 run finished about thirty
    seconds BEFORE bc7d776 was committed, so it described the
    implementation tree, not a committed head. It is relabelled
    accordingly rather than left standing as gate evidence for a commit
    that did not yet exist.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016bqGA6s9tTUFzYpbeW3tai
This commit is contained in:
Levi Neuwirth 2026-08-20 09:25:48 +02:00
parent 8802d6a1a2
commit 9321975197
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1 changed files with 12 additions and 1 deletions
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docs/active-work.md
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@ -301,7 +301,18 @@ from #171 and #215.
directory so `mktemp -d` fails, and asserts boundary error 2, no directory so `mktemp -d` fails, and asserts boundary error 2, no
stage, and no residue. Temporary directories are RAII throughout; stage, and no residue. Temporary directories are RAII throughout;
the `keep()`-plus-manual-cleanup shape is gone. the `keep()`-plus-manual-cleanup shape is gone.
- **36 gate rows, 16 GPU rows, full gate green.** - **36 gate rows, 16 GPU rows.**
- **HEAD-EXACT GATE on `8802d6a`: green, all 8 stages**, log
`20260820T072102Z-3009434`. The first attempt on the same head
(`…-2931214`) failed `07-sweep` on
`composition_overhead_under_ten_percent` — a perf budget unrelated to
this lane, green in isolation, and a signature the
`panel-mapping-generation` ledger already records recurring. **Both
runs are recorded; no causal attribution is made** for the first,
only that the second is the head-exact evidence.
- **The earlier `…-2647615` run is NOT head-exact evidence**: it
finished about 30 seconds before `bc7d776` was committed, so it
describes the implementation tree rather than a committed head.
- **A4 mutations, each biting:** accepting any status 2 regardless of - **A4 mutations, each biting:** accepting any status 2 regardless of
token → `gate_refuses_on_helper_error_…`; surfacing child stderr on a token → `gate_refuses_on_helper_error_…`; surfacing child stderr on a
boundary failure → the conformance row **and** that row; token to boundary failure → the conformance row **and** that row; token to