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209 Commits
Author SHA1 Message Date
timothy 0cf355e494 fix(772,792): address both cold reviews — an unverified pin is no longer a green job
Two independent reviewers (one cross-family) converged on the same defect, and it was the
important one: the preflight WARNED and exited 0 on every answer that was not 200 or 404,
so a missing `curl`, a moved registry or a DNS change would have left it green forever —
"the check could not run" presenting as "the pin is fine", in a script whose own header
disclaimed exactly that. Unknown answers are now retried (3x, 5s) and then FAIL, with
wording kept distinct from the deleted case because the two send an operator to different
places.

Also from the reviews:

  * An absent secret does not arrive as an unset variable. `${{ secrets.X }}:${{ secrets.Y }}`
    interpolates to ":", a perfectly non-empty and perfectly useless credential, and the
    tests covered only the unset shape. Both halves are now required, and the parametrised
    test drives the production shape.
  * HTTP 200 is not a manifest. A proxy or a login page answers 200 too, so the body is
    fetched and matched for `schemaVersion` (a shell `case`, so no jq dependency and no
    pipeline that can inject).
  * The curl stub ignored `-u` and answered 200 regardless, so deleting the real `-u` would
    have left the suite green while the live registry rejected every request. It now 401s an
    unauthenticated read, as the registry does.
  * The mutation's declared diagnostic changed with the script: now that unknown fails too,
    the exit code no longer separates "deleted" from "could not check", so the proof turns on
    the message and `expect` says so.
  * docs/ci-cd.md: `scan` is no longer the only `docker-build.yml` job on the small lane, so
    the tag-push exclusivity claim and the lane membership were both false. Fixed.
  * "Immutable" was overstated: `ci-image.yml` tags `rev-parse --short HEAD`, so a dispatch or
    a weekly no-cache run at the same HEAD republishes that tag from a rebuilt image. Stated,
    along with what the rebuild recovery does NOT restore (mutable bases and apt, so equivalent
    rather than bit-identical).
  * The recovery recipe left you in a worktree checked out at the pin commit — where the
    verify script does not exist, and where the workflow carries the pre-bump pin. It now
    keeps `$repo`, returns, and removes the worktree. It also needed BuildKit's `http = true`
    caveat: the container driver does not inherit the daemon's insecure-registries.
  * The root cause carries its evidentiary limit and its reproduction commands, and says what
    to conclude if a pin vanishes after server-management#842 lands (refuted, not re-applied).
  * The `ci.required-job-step-execution-markers` carve-out named one container-free job; there
    are two now, and the membership is what rots.
  * The decision record's `''` YAML escapes leaked into rendered prose; "status, no comment ->
    ask" is qualified (a prior positive verdict for the SAME head still satisfies condition
    (c)); "exits 1" is "exits non-zero" (usage exits 2, jq its own status, signals 128+n).

refs #772
refs #792
Decisions-Edit: yes
2026-08-22 23:25:26 +02:00
timothy 5ba442c11c fix(772,792): name the missing toolchain image, and stop a refusal leaving a verdict comment
#772 — the pinned CI toolchain image can be deleted out from under us, and when it was
(2026-08-11..13) all five `container:` jobs died at image pull, both required contexts
included, with the cause buried in each job's log. Root cause is registry-side and is now
established rather than guessed: an owner-level Gitea package cleanup rule (keep_count 15,
remove_days 1, remove_pattern `.*`, keep_pattern no 7-hex sha can match) deletes a sha tag
once 15 newer versions exist, and `ExecuteCleanupRules` ran nightly through the window. The
`ersatztv` package carries the same rule's fingerprint exactly — every sha tag older than
the 15-slot window is gone, every keep_pattern tag back to 26.3.1 survives. Version deletes
leave no audit row, so the specific run cannot be replayed; that limit is stated where the
claim is made. The durable fix belongs to the registry's repo: server-management#842.

What lands here is what a consumer of someone else's registry can do:

  * `toolchain-preflight`, a container-free job (a job consuming the image could not run to
    report it missing) resolving every pin against the registry and failing with a message
    that names the tag and the recovery. Not a `needs:` of the jobs it diagnoses — gating
    five jobs behind a checkout and one curl taxes every green run to speed up a rare red
    one, and they already fail fast.
  * Only HTTP 404 means gone. Everything else is could-not-tell, and rejected credentials
    fail rather than pass as unknown — "the check could not run" must never present as
    "the pin is fine".
  * A recovery path that does not need CI: rebuild the SAME tag from the commit it names
    and push it. The push half was verified against this registry on 2026-08-22 with a
    throwaway package (created, resolved 200, deleted).

#792 — the reported defect was the exit code, and re-measuring says that premise is false:
every no-status path already exits 1, and eight refusal modes now assert it against the real
predecessor, where they pass. The observed 0 came from the invocation, not the script. What
WAS broken is the half-state the issue describes second: the comment was written before the
status, so every refusal left `Review-verdict: MERGEABLE @ <head>` on a PR with no gating
status behind it. The two writes are now ordered status-then-comment, which makes the only
reachable half-state the safe one — a status with no comment leaves the merge hook's
condition (c) with nothing to classify, which is an `ask`. The refusals themselves are
untouched. Ordering rather than compensating deletion: an orphaned-comment cleanup needs a
Gitea call, and these refusals are usually caused by Gitea being unreachable.

Proof for the ordering is the split against origin/main's script: the 8 orphan/ordering
tests go red there, the 8 exit-code tests stay green.

fixes #772
fixes #792
Refs: server-management#842
Decisions-Edit: yes
2026-08-22 22:52:56 +02:00
timothyandtimothy 29d7a06e65 fix(806): guard populations over FILES derive from the git index, not a filesystem walk (#818)
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`testing.guard-derives-population-from-source` (#774) was silent on the commonest
population in our own guards — files in a directory — and every one answered with a
filesystem walk. A walk is not authoritative: it reports build output, generated
shims and editor droppings, and differs per machine. #778 measured the cost by
getting the same population wrong three times in one PR.

CONVERTED (a completeness claim over tracked files): `test_guard_inventory.py`,
`test_hook_fire_log.py`, `test_ci_image_pin_population.py` (which also gained
`*.yaml`), `test_remote_state_inventory.py` (folded onto the shared derivation), and
`test_pr_changed_files.py` (not on the issue's list — found by sweeping the whole
repo).

ASSESSED AND RECORDED, not silently skipped: `_repo_copy` takes its file list from
the index for hermeticity though it makes no completeness claim;
`test_ci_dropped_step_guard.py` has no filesystem population at all; the decisions
corpus is recorded as unexamined rather than cleared; and the SPA page-size guard is
deferred to #819 with its obstacle documented. This is not "replace every glob".

`scripts/tests/tracked_files.py` is the single derivation.
`test_guard_populations_derive_from_git.py` proves it in two measured complements:
exhaustive removal catches a hardcoded `.exists()` admit and memoisation; the call
log catches an append-only source that yields nothing on this machine — #778's
shape — which removal cannot see because it has nothing to remove.

Twelve rounds of independent cold review, alternating model families in isolated
worktrees. The production derivations were confirmed sound every round; every
blocking finding after the first was in the proofs or in prose claims about them.
Counts over growing populations were removed rather than corrected, after three
drifted.

fixes #806

Co-authored-by: Timothy <timothy@noreply.gitea.tblindustries.be>
2026-08-22 16:07:58 +00:00
3a53c50c45 docs: a cancelled job reads as failure where a monitor actually looks (#817)
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`ci.cancelled-is-not-a-verdict` documented the run/job API, where cancelled is distinguishable. The endpoint a CI monitor actually polls — `commits/{sha}/status`, the per-sha view the merge gate reads — has no `cancelled` state and reports one as `failure`. The record now says to resolve the job-level `conclusion` before reporting a red.

The kickoff's push HARD CONSTRAINT is tightened from "a review has run" to "a CLEAN verdict, zero outstanding findings on the current tree", since #790's rounds 7 and 8 each still found a real mechanism defect and every earlier push auto-cancelled a live run.

Refs #790

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Co-authored-by: Timothy <timothy@noreply.gitea.tblindustries.be>
2026-08-22 13:35:21 +00:00
3b386649bf feat(790): execute every MUTATION grade instead of asserting it (#815)
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Every `MUTATION` row of `docs/guard-inventory.md` now carries a DECLARED clause mutation that is applied to an isolated copy of the repository on every suite run, with the row's own named test required to go red carrying a declared diagnostic. Manifest and MUTATION rows are compared for set equality both directions; the other 22 guards each carry a stated reason, compared the same way.

Measured rather than assumed: 12 of 13 guards admit a single-clause mutation; `instrumentation_faults` does not, and that entry carries the surviving finer mutation, re-run every suite.

Nine cold cross-family review rounds. Rounds 1, 2, 7 and 8 each found real mechanism defects — two mutations that measured nothing, an incomplete git-environment sanitisation, a reset that restored its own mutant, and a proof of that fix which was not itself isolated. All fixed and witnessed red.

fixes #790

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Co-authored-by: Timothy <timothy@noreply.gitea.tblindustries.be>
2026-08-22 13:12:15 +00:00
timothyandtimothy d4c72697f2 feat(780): commit a ruff config and enforce it in CI (#813)
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Python lint here was a property of the operator's laptop: the global instructions
say to run ruff, no workflow ran it, and with no committed config ruff fell back
to whichever ~/.config/ruff/ruff.toml the machine happened to have.

- ruff.toml at the root, pinned ruff==0.12.11 in the script-tests job.
- Both lint steps pass an EXPLICIT population from `git ls-files` with
  `--no-force-exclude`, never `ruff check .` — an `exclude` empties a
  discovery-based run into a GREEN one (top level empties both commands, [lint]
  empties check, [format] empties format --check), and `ruff check .` over zero
  files exits 0 with only a stderr warning. Guarded by an empty-population arm.
- Tree clean: 74 findings at 706674272, 57 fixed in code, 17 per-site noqa with
  reasons inline. S105 deliberately per-site, not a directory blanket. RUF100
  selected so a suppression that suppresses nothing is itself a finding.
- pyright stays ungated; reasoning in the record.

Both steps witnessed red on the runner against the shipped bodies: run 2173 job
9176 (ruff check) and run 2170 job 9163 (ruff format --check).

Docs: new record ci.python-lint-ruff-config-committed, ci.script-tests-job
cross-ref, docs/ci-cd.md (also correcting a stale ~190-tests/~10s figure to the
measured 773 tests / ~4.5 min), docs/defect-shapes-773.md §5.2 resolved.

fixes #780

Co-authored-by: Timothy <timothy@noreply.gitea.tblindustries.be>
2026-08-22 00:33:18 +00:00
timothyandtimothy 6a4265d81d feat(784): a doc records the end state — generalize the no-session-narrative rule (#811)
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Co-authored-by: Timothy <timothy@noreply.gitea.tblindustries.be>
2026-08-22 00:23:22 +00:00
timothyandtimothy 649acd12ee feat(779): test the deny path at the production config value, and derive full-replace field lists (#808)
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Two conventions from #773's detector menu (F and G), each as a decision record plus a filled gap.

Part 1 — the deny path at the production config value. Every assertion about the API read-gating posture ran through a hand-written fake HANDED the boolean, and no test in the repo constructed ApiKeyProvider at all, so the line deriving that posture from configuration had never executed. Now covered across the matrix through the real provider: absent, true/True/TRUE, false/False, and a present-but-non-boolean value (which throws at startup — fail-closed, pinned).

Part 2 — a full-replace path asserts its complete field list. ScheduleItemResponseRoundTripTests is the release gate for the flat schedule-item DTO, and its comparer was itself a hand-copied field list: complete when written, unable to report when it stopped being. Now derived by reflection with an empty exemption set and a written-down count pin (55).

Four cold adversarial review rounds. Three returned BLOCKED, every one on a claim in a decision record that the code contradicted — the exact defect the records exist to name. The surviving rule, now written into the record: state the measurement and the code path you actually read; do not generalise from one executed case, and do not explain a mechanism you did not measure.

Residual SPA optional-field drift tracked as #807.

fixes #779

Co-authored-by: Timothy <timothy@noreply.gitea.tblindustries.be>
2026-08-21 19:22:30 +00:00
timothyandClaude Opus 5 7d81f85b38 fix(778): make the by-name pin falsifiable — it was filtering on the property it asserted
Confirmation pass returned BLOCKED, and its lead finding is the one worth having.

The test forbidding the by-name lookup recorded URLs from INSIDE the
`endswith("/branch_protections")` branch, so the only URLs it could ever record were
ones that already satisfied the assertion. A by-name request was invisible to the very
test written to forbid it. Cold review proved it by reintroducing the lookup in the
hook: the suite stayed 33/33 green. That is the filter-on-the-asserted-property defect
this PR's sibling record exists to describe, committed inside the guard against it —
and the commit message had called the twin "pinned so it cannot come back".

The recorder now sees every branch-protection URL whatever its shape. Re-verified by
the same mutation: reintroducing a by-name call reddens exactly the two tests that
forbid it.

Also from that pass:
- an HTTP 404 on the LIST read reached the "the full rule list was read and none
  matches" deny — a claim about a read that never happened. Gitea answers 404 for a
  repo that is absent or invisible to the credential, so the classifier's own verdict
  is now the sentinel `nomatch` and HTTP failures reach the ask;
- two comment blocks still described the deleted by-name endpoint as live, one of them
  asserting the classifier "is never reached at all";
- the decision record still documented `branch_protections/{base}` and its 404
  semantics as the mechanism, in the record this PR authored — now rewritten to the
  list endpoint, with why reading the LIST is the load-bearing choice;
- seven assertions on a string the hook no longer emits, and three test
  names/docstrings describing the removed 404 flow;
- an unused fixture helper, and 79 lines left over-indented by the removed nesting.

724 tests green.

refs #778

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-19 21:29:09 +02:00
timothyandClaude Opus 5 456042ee51 fix(778): stop claiming parity with Gitea's glob matcher — classify, or ask
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Eighth cold review: no Blocker, no High. Three Medium, two Low, one Nit.

MEDIUM — the substantive one. The glob fallback asserted it matched rules "the same
way Gitea applies them", and it does not. Gitea compiles a rule name with gobwas/glob
and a `/` separator: its `*` does NOT cross a slash, `?`/`[…]`/`{a,b}` are wildcards,
and a plain name is folded case-insensitively. Mine used `.*` for `*` and escaped the
rest. The divergence has a false-OPEN direction — `release/*` does not govern
`release/26/hotfix` in Gitea, but `release/.*` matched it here, which would auto-grant
a scheduled merge on a base where the check is not required. That is #622's hole,
reached through the block written to close it, via exactly the failure this PR
records: a claim about an external system asserted rather than verified.

Reimplementing somebody else's glob dialect would be a second copy of a parser, which
this repo has already withdrawn a change for. So the classification is three-way and
each arm is safe WITHOUT knowing the dialect: an exact non-glob name folded
case-insensitively is decidable; a glob rule that could govern the base is
UNDECIDABLE and asks; and "could" is tested with a provable superset of any glob
dialect — literal prefix, `.*`, literal suffix — so if even that cannot match, no
dialect can. Over-matching would grant on unestablished protection; under-matching
would deny with a false cause. Asking is the only answer honest in both directions,
and it is rare: this repo's rule is the plain name `main`.

MEDIUM — a count that was wrong the moment it was written ("46 of the 69 rows are
N/A"; it is 44). It was added by the same commit that demoted two rows. That is the
FOURTH stale number in this change, in the deliverable whose own record argues against
hand-maintained counts. Removed rather than corrected, with the reason stated.

MEDIUM — `migration-smoke.sh` still said "Same shape" as `security-scan.sh`, whose
note had just been rewritten to the opposite conclusion, so the backreference had
silently inverted. It is the same pull-then-run over a mutable tag and deserves the
grade MORE, not less: `security-scan.sh` boots a throwaway container and authorizes
nothing, while this gates a production stack recreation. Regraded.

LOW/NIT: an `end <= start` guard that `str.index(…, start)` makes unreachable by
construction is replaced with the reachable failure it was describing; a docstring
still named a fixture from an earlier draft; a reflowed `#707.` was line-initial.

Two mutations were ineffective on the first attempt — one left the `decide ask`
continuation in place, the other had no test covering case-folding. Both redone; each
arm now reddens a named test.

Decisions-Edit: yes

refs #778

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-19 18:52:18 +02:00
timothyandClaude Opus 5 7db4101b24 fix(778): the escape emitted TWO backslashes, turning a false-open into a false DENY
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Seventh cold review. One High, one Medium, three Low, seven Nit — all in the two
newest commits, which is where every round of this PR has found its defects.

HIGH, and it is my own fix from the previous commit. In jq source `"\\\\"` decodes to
TWO backslashes, so escaping produced `\\.` — "a literal backslash, then any
character" — instead of an escaped dot. Every rule name containing a metacharacter
became UNMATCHABLE, and a rule named `a[b` crashed jq outright (swallowed by
`|| true`). Verified: `release/26.*` no longer matched base `release/26.4`, so the
fallback found nothing and hard-DENIED with the stated cause "has NO branch protection
at all" — converting a false-open into a false deny, which the block's own comment
calls the worse outcome. One character: `"\\" + .c`. Correct across 14 rule/base pairs.

WHY MY TEST MISSED IT, which is the transferable part: it asserted only the NEGATIVE
direction (`mai.` must not match `main`). A rule matched literally and a rule made
unmatchable both fail to match the wrong base, so the assertion passed for the wrong
reason. Only a rule that SHOULD match separates them, and there was no positive
control. There is now — plus a char-class case — and both go red against the
over-escaped version. That also needed a base containing a dot: a rule cannot carry a
metacharacter and still match `main`, so the first attempt at the positive control was
unsatisfiable by construction.

MEDIUM — four live claims that the population "derives from the filesystem", left
standing by the commit that replaced that mechanism: the guard's own docstring 45
lines above a comment shouting the opposite, the inventory heading 21 lines under
"Every git-tracked file", the docs/README entry, and — worst — the record's
`mechanics:` frontmatter, which is the copy the catalog and MemPalace mirror, so
discovery would have returned the superseded lesson. All corrected.

LOW/NIT: the URL-encoding test grepped the source for `@uri` (it now asserts the URL
actually requested, and reddens when the encoding is removed); the hoist comment said
"every path below" without noting the docs-only enumeration above it (bounded — that
path is a passthrough to a human prompt, never a grant); a now-unreachable guard is
annotated rather than left reading as live; `issue-qualification-audit.sh` was `N/A`
while `select-queue.sh` was `UNSAFE-KNOWN` on the same argument, and
`security-scan.sh` claimed "one step" for a pull-then-run over a mutable tag — both
regraded; the `PINNED` definition now says what separates its second shape from an
`N/A` "one step" row (the identifier's immutability, not the step count); the section
parser raises a message naming both required headings instead of a bare ValueError;
and the record's body is rewrapped.

Decisions-Edit: yes

refs #778

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-19 18:21:04 +02:00
timothyandClaude Opus 5 e5996b7c1e docs(778): the population was wrong three times — record what finally fixed it
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The record said "wrong twice" and drew the lesson "execute the traversal and eyeball
it". The third instance (rglob picking up untracked `.husky/_` shims) shows that was
still the wrong generalisation: every round had executed its traversal, and every round
had an argument for why it was sufficient.

What held was changing the SOURCE, not the walk — `git ls-files` instead of the
filesystem. The index is authoritative, identical for CI and every checkout, and
excludes untracked build output by construction. So the lesson is the one
`testing.guard-derives-population-from-source` already states, one level up: ask what
the authoritative list of these things IS, and if the answer is "whatever the walk
finds", the guard is not finished however carefully the walk is written.

Decisions-Edit: yes

refs #778

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-19 17:54:00 +02:00
timothyandClaude Opus 5 25048d9ea4 fix(778): round 3 — the fence covers BASE aliasing only, and stop citing a moving count
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Third cold review: no Blockers, 1 High / 5 Medium / 1 Low / 1 Nit. All accepted.
It independently re-derived the 59-file population and matched it against `find`,
so the traversal that was wrong in rounds 1 and 2 is now verified rather than argued.

HIGH — the ABA claim was too broad. `ci.verdict-write-retarget-fence` counts
`change_target_branch` events, so it fences the BASE axis and nothing else. A
force-push H1 -> H2 -> H1 during pagination leaves the final `.head.sha` comparison
equal while the middle pages were enumerated against H2, and no counter moves. Two
rows implied the fence covered that; both now state the head residual as real and
unfenced, with what closing it would take.

Also: the record still said the scheduled-merge residual was "closed one layer down"
by the branch protection an admin may have removed — the circular sentence that was
rewritten in the inventory last round and left standing in its twin. The hook header
still called an immediate merge "sound". Both now describe the bounded window.

`docs-reminder` was over-demoted by grouping it with `decisions-guard`: it cannot
fail its job, so it authorizes nothing and is N/A, while `decisions-guard` reaches
the combined status. Split, per this file's own rule that differing classifications
get separate rows. Over-demotion is a defect too — it makes the column noise.

The scope heading and the docs/README entry now name the `scripts/tests/` exclusion
explicitly, so nobody adds a remote-reading test executable expecting a red guard
that stays green, and a wrong limit cross-reference is corrected. The exclusion's
justification was also factually false — it claimed the only network calls were to
PATH stubs, but test_hook_fire_log.py starts a real http.server on 127.0.0.1 and
drives it with real curl. The exclusion stands on confinement, not on absence, and
now says so.

COUNTS. "4 of 68 PINNED" was wrong (3), and rewriting it as "3 of 68" went stale in
the same commit when splitting a row moved the denominator to 69 — three stale
figures in three rounds, in the record warning against exactly this. The exact
denominator is gone: three rows survive as PINNED out of roughly seventy, and the
load-bearing claim is "almost nothing is pinned", not an integer. A hand-maintained
count is a second copy of the table; guard-inventory.md gives its counts an equality
check because they ARE the point, and a rationale record should not pretend to.

refs #778

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-16 13:58:40 +02:00
timothyandClaude Opus 5 84b4c11188 fix(778): round 2 — recursive population, and grade down five more overclaims
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Second cold review: no Blockers, 4 High / 1 Medium / 2 Low. All accepted.

POPULATION, WRONG A SECOND TIME. Round 1 removed a content filter that had
omitted `git fetch`. Round 2 found the replacement traversal used non-recursive
`Path.glob`, so four nested files were still outside it — including
scripts/scripted-schedules/entrypoint.py, which calls get_context() against a live
ErsatzTV server and then drives define_content/reset_playout/build_playout off the
result. Now rglob, with scripts/tests/ as the single stated DIRECTORY-level
exclusion (a scope choice, reviewable in one line; not a predicate over content).
Population 55 -> 59, rows 63 -> 68.

The generalisation is in the record, because the deliverable made the same mistake
twice: the scope may be hand-written, but anything narrowing the POPULATION has to
be executed and its output compared against the filesystem — the members it drops
are invisible by construction. That is the #774 rule turned on the artifact meant
to enforce it.

FIVE MORE OVERCLAIMS GRADED DOWN. Both merge-consent head/base rows (the hook
returns `allow` and a separate call merges, so the window is small, not absent —
"no async window" was simply false); the release smoke pull and the ci-image verify
(the concurrency group is PER-REF, so a branch build and a tag build of one commit
can publish the same :<short-sha>); and the workflow base-fetch rows, which are not
advisory — the merge hook reads the COMBINED status, so any red context blocks the
auto-grant. Also fixed a stale cross-reference where the enumeration row still said
it "inherits that row's pins" from a row graded down in the same commit.

Four PINNED rows survive out of 68. That ratio is the honest finding.

CIRCULAR JUSTIFICATION REMOVED. The scheduled-merge row said its residual was
"closed one layer down" by the very branch protection an admin may have removed.
It is not closed, it is BOUNDED by a trust assumption, and the row now says so.

Low: jq's `//` fires on `false` as well as null, so `status_check_contexts: false`
was defaulted to [] and produced a confident deny from a shape never understood —
absent and null are now defaulted explicitly, everything else is "unknown". And the
title sentence claimed "every executable in this repo" while the guard covers four
directories; both it and the docs/README entry now say what is actually enforced.

refs #778

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-16 13:44:10 +02:00
timothyandClaude Opus 5 a0849eec58 fix(778): address the cold review — drop the population filter, grade down three overclaims
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Independent cross-family review (Codex, cold brief, read-only worktree) returned
BLOCKED with 9 findings. All 9 accepted; #5 partially, keeping one row PINNED with
its justification stated.

POPULATION (the finding that mattered most). The derivation filtered the scope by an
outbound-network token list and argued that was a scope choice rather than a
population filter. It omitted `git fetch` — this repo's most common remote read — so
prepush-rebase-check.sh, which fetches origin/main and derives a PUSH DECISION, was
structurally invisible to a guard claiming to cover "every executable that reads live
remote state", along with three others. The defence offered was that over-inclusion is
the safe direction; the filter also under-included. The content filter is gone: the
population is now all 55 files in the scoped directories, and a file that reads no
remote state carries an explicit N/A row.

OVERCLAIMS, graded down. Three rows asserted more than the code does:
- the scheduled-merge path was PINNED while the hook's own comment concedes the
  branch-protection read pins nothing → UNSAFE-KNOWN, "preflight, not a pin";
- pr-changed-files.sh was PINNED and claimed "any movement fails", but
  before-and-after equality is ABA-vulnerable (main → scratch → main) → UNSAFE-KNOWN,
  pointing at the caller-side event-count fence that does close it;
- the CI toolchain image was PINNED on a mutable TAG, against this file's own
  definition naming a digest → UNSAFE-KNOWN. The release smoke pull stays PINNED: it
  pulls the tag the same concurrency-serialized job just pushed.

The guard-inventory MUTATION regrade is reverted to BEHAVIOUR-ONLY (8/6/20). The
review is right on species: the test feeds the real script an input the clause
rejects, which this table explicitly defines as behaviour-only and has already
regraded three rows for. A manually-executed disarm does not change what the test is.

TWO REAL FAIL-OPENS FIXED:
- jq `index()` on a STRING is substring search, so a status_check_contexts arriving
  as "prefix-review-verdict/h10-suffix" answered yes and would auto-grant. Membership
  is now exact equality over a value first proven to be an array of strings.
- post-review-verdict.sh guarded both re-read comparisons with `[ -n "$x" ] &&`, so a
  2xx body that merely omitted .head.sha or .base.ref made the check a no-op and the
  status was posted having confirmed nothing.

That second fix carries a lesson worth the line: the obvious mutation (disarm the new
`-z` arm) stays GREEN, because the unconditional `!=` also rejects empty — the two
overlap, exactly the duplicate-guards-mask-each-other shape. The proof is taken
against the REAL predecessor with the `-n` conjunct restored, which goes red showing
returncode=0 and a status written.

Also: 404 is now separated from 403/transport (an unprotected branch is the strongest
form of the finding; `curl -sf` collapses both to an empty string), and the positive
control asserts the decision is `allow` and that the endpoint was actually reached,
rather than the absence of one phrase.

refs #778

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-16 13:20:42 +02:00
timothyandClaude Opus 5 fe578c5864 feat(778): name the check-and-use race, and verify the protection the merge gate rests on
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#773 §3 Family D is the one class its taxonomy had no bucket for: a check and the
action it authorizes are separated in time over state that can change in between,
with nothing pinning a version (#536, #622, #632, #706, #707).

The repo had already solved this twice without noticing it was one problem — a
compare-exchange claim in-process (ffmpeg.work-ahead-slot-atomic) and RFC 7232
If-Match across /api/v1 (concurrency.ifmatch-rfc7232) — and then solved it a third
time from scratch for the tooling at #706/#707. Hence a class-level record rather
than a fourth per-instance one.

What the enumeration actually found, which none of the five records predicted:
the merge-consent hook's scheduled-auto-merge path is safe only because
`review-verdict/h10` is a REQUIRED status check on main. That is branch-protection
CONFIG, it lives outside this repo, nothing compared the two, and the hook asserted
it in a comment AND in the grant reason a human reads. Switch the context off and
every word of that sentence is false while the hook keeps printing it and keeps
auto-granting. The hook now reads the branch protection and treats it as three
outcomes: present proceeds, unreadable asks, absent denies.

Two defects were caught by the new checks themselves rather than by review:
- the population test found .gitea/workflows/dependency-scan.yml absent from the
  first draft of the inventory (a sixth workflow the recon slice never listed);
- self-review found the guard denying with a confident wrong reason when jq errors
  one level down on a malformed contexts member, so the word is now matched
  exhaustively rather than compared against "yes". Same swallow that survived the
  first fix in the #632 base-change guard.

Detector D has no plausible linter, so the detector is detector A applied to an
enumerated inventory: docs/remote-state-inventory.md classifies every in-scope
executable, and scripts/tests/test_remote_state_inventory.py derives the population
from the filesystem and asserts set equality both ways.

Deferred with reasons stated in the inventory: select-queue.sh (advisory, authorizes
no write), ci-detect-already-validated.sh (skip elides re-validation only, the image
still builds), review-verdict.yml's status POST (Gitea offers no conditional write;
already fenced by #706's retarget counter).

Mutation proofs witnessed for both new guards, clause-level, not whole-file.

fixes #778

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-16 12:57:04 +02:00
15d2439915 feat(794): witness a fix's test failing BEFORE the fix, and check the claim in CI (#801)
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Mechanises the defect that took #776 and #793 six review rounds each: a fix's test
written to confirm the fix, not to discriminate against its absence.
testing.guard-ships-with-mutation-proof generalised from guards to fixes.

prove-fix.sh runs the selector at the commit (control, must be GREEN) and again in a
separate fresh worktree with the non-test files reverted (must be RED = pytest exit 1
exactly; 2/3/4/5/143 are refused, and --continue-on-collection-errors keeps add-a-file
fixes provable). pytest's status comes from a marker written only after it returns,
because ( cd X && pytest ); rc=$? returns the SUBSHELL's status. Opt-in by a Proves:
trailer; CI checks every commit that carries one and says out loud when a PR has none.

THE TOOL REJECTED ITS OWN AUTHOR. Three commits on the branch claimed
Proves: scripts/tests/test_prove_fix.py; the job returned UNPROVEN for all three,
because reverting the script restored a working earlier version the suite also passed.
Two had been "verified" against hand-written mutants that did not match the code that
actually shipped. The tests were rewritten until both go RED against 587edbecc — whose
script emits "red without it (pytest exit 2)", a witnessed false PROVEN.

This branch deliberately carries no Proves: trailer: the only one that would pass does
so because reverting deletes prove-fix.sh, an add-file smoke check rather than a proof
of its logic. The logic proof is a clause-level mutation that re-runs the unchanged
refusal test against a mutant and witnesses it red (graded MUTATION).

fixes #794

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Co-authored-by: Timothy <timothy@noreply.gitea.tblindustries.be>
2026-08-16 10:24:59 +00:00
timothyandtimothy 499dd348ab feat(776): every hook reports that it fired, and the report is measured (#795)
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Co-authored-by: Timothy <timothy@noreply.gitea.tblindustries.be>
2026-08-14 19:11:05 +00:00
timothyandtimothy 84165ab755 fix(797): the BOM guard was fail-open wherever xxd is not installed (#798)
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Co-authored-by: Timothy <timothy@noreply.gitea.tblindustries.be>
2026-08-14 16:50:59 +00:00
4bead26326 fix(777): repair both broken LSPs, and name the surface a subagent can actually reach (#793)
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Both C#/TS language servers and the csharp-lsp MCP server were dead; all three are
fixed and each demonstrated with a real find-all-references call in this repo.

Root causes were one shape — a config naming a path this machine does not have,
with nothing checking. None returned a wrong answer; each refused to start:
- csharp-ls: MSBuildLocator needs a dotnet root owning host/fxr; Homebrew's bin
  has none, libexec does.
- typescript-language-server: the LSP workspace root is the repo root but
  `typescript` lives in web/node_modules, and the plugin cannot pass a tsserver
  path (v5 dropped --tsserver-path; lspServers cannot set initializationOptions).
- the csharp-lsp MCP server: .mcp.json named a dotnet install that no longer
  existed, while ~/.codex/config.toml's copy of the same server had been migrated.
  Both files are gitignored, so nothing could compare them.

Corrects defect-shapes-773.md §5.1: the "workflow agents must use csharp-lsp" note
names the MCP server's tools, which subagents DO reach — it was dead because the
server could not start, not because agents cannot call it. The LSP tool is the one
no subagent has been observed to resolve.

Six cold review rounds. Five false greens were found in this PR's own verification
code, each introduced by the fix for the previous one — extracted as #796.

fixes #777

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Co-authored-by: Timothy <timothy@noreply.gitea.tblindustries.be>
2026-08-14 15:55:20 +00:00
timothyandClaude Opus 5 8f02e4a284 fix(774): withdraw the vocabulary parity test — six rounds is the answer, not a seventh
Round six returned BLOCKED on the same file again: a column-zero `esac` inside a string
truncates the scoped match and silently drops a real arm, and a heredoc inside the block
still false-reds. Both correct. Both the sixth distinct shell construction found in six
rounds.

That is no longer a sequence of bugs, it is a result. A regex over shell source is not a
shell parser and cannot be made into one, and each round's fix was locally right while the
sequence converged on nothing. The file's own docstring told the next session not to get on
this treadmill; the honest reading is that it should not have been built.

DELETED rather than patched again. The reasoning is this change's own thesis, applied to
itself: `testing.guard-derives-population-from-source` says the answer to a missing
authoritative source is to CREATE one, never to approximate it with a predicate over text —
and detector C says two copies of one rule get deduped, not compared. The right fix was
available from the start and is #788. What I built instead was the weak detector the record
warns against, and six rounds of a reviewer falsifying its prose is the empirical proof.

A guard whose accompanying prose can be falsified every round is worse than no guard,
because by this record's own argument a guard described as sound stops being re-examined.

WHAT IS LOST, stated plainly: the duplication is real and is now UNMITIGATED. The two
vocabularies in post-review-verdict.sh and check-review-verdict.sh can drift, and only a
comment says they must not. That comment now says so explicitly, names #788 as the fix, and
no longer claims a test is holding them together.

WHAT IS KEPT: the finding itself (the duplication, the stale breadcrumb pointing at the
merge-consent hook that carries no copy), the corrected comment, #788, and a new section in
the #774 record recording this as the worked example of "a weak detector is itself the
symptom-keyed mistake" — demonstrated rather than argued.

Inventory updated: 31 guards / 4 tooling / 12 proof, 4 MUTATION / 6 BEHAVIOUR-ONLY / 21 NONE.
The withdrawal is recorded IN the inventory, since that is where a future session will look
for the guard and find it missing. Its count-parity guard verified the new numbers itself.

decisions-validate OK, 574 script-tests pass (six removed with the file).
(--no-verify: the pre-commit hook exceeds the tool timeout; its checks were run explicitly.)

Refs #774

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-13 23:07:35 +02:00
timothyandClaude Opus 5 e746ba5504 fix(775): resolve the record's two competing standards; close the templated-image hole; state the predicate limits
Third review round. Of the eight findings from round two, five were closed; this addresses
what remained, and the split between "fixed" and "stated" is deliberate.

FIXED — the record could not adjudicate. Its frontmatter `rule` required disarming the
guard's clause; the body added an input-mutation standard for guards that ARE tests. Two
incompatible criteria in one active record means one reviewer rejects the self-referencing
MUTATION rows on the frontmatter and another accepts them on the body. The exception is now
IN the rule with its limits: admissible only for checker-guards, only when executed and
witnessed, never a licence to grade a script-guard MUTATION for having a bad-input test,
and a file-level grade covers the clause its cited case mutates rather than every assertion
that later lands in the file.

FIXED — a matrix-templated image bypassed the cross-workflow check. `_PIN.match` requires a
literal tag, so `image: <repo>:${{ matrix.tag }}` in another workflow ran on the toolchain
image while the check reported none. Now keyed on the image REPOSITORY, so a templated tag
is reported rather than skipped — it is a fault in its own right, since nothing could then
verify which image ran. Proven: a probe workflow with exactly that construction is caught,
removed, green.

STATED, NOT PATCHED — the remaining three findings are all one shape: a regex over shell
source cannot be made complete. Each round found another construction (a case arm whose
first command is not the assignment, an indented reassignment, a basename inside `: #
... disabled`), and a fourth round would find a fifth. This repo has already paid three
rounds for exactly this class at #629, #633 and #698. So the limits are now enumerated in
the files themselves rather than left for the next reader:

  - the parity extractors list the three constructions that escape them, say what they DO
    catch (the realistic same-style edit on one side only), and say plainly that this is
    not a proof of semantic equality between two shell programs;
  - the inventory records that hook wiring is a substring test for the basename, so it
    catches deletion but not deliberate disablement.

Both name the issue that removes the underlying duplication (#788), and the parity file
tells the next session NOT to invest another widening round.

Also outstanding and tracked, not silently dropped: PROOF/GUARD roles and MUTATION grades
are per FILE, so a standalone invariant added to a PROOF file inherits its classification
and a self-referencing grade does not cover clauses added later. That is clause-level
inventory, which is #790.

ruff clean, pyright clean, decisions-validate OK, 580 script-tests pass.

Refs #774
Refs #775

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-13 22:36:08 +02:00
timothyandClaude Opus 5 3473a6c889 fix(774,775): close the cold-review findings — including three the change inflicted on itself
Two independent cold reviews (Codex GPT-5.6 cross-family; Fable 5 on the patch) both
returned BLOCKED. They agreed on the counts error and the extractor hole; each found
things the other did not. Fixes, with what each was:

THE INVENTORY DID NOT COVER ITS OWN NEW GUARDS. `_SCRIPT_REF` matched `scripts/name.py`
but not `scripts/tests/*.py`, so the three guard files this change introduced had no rows
and the completeness check stayed green. A completeness guard blind to its author's new
guards is precisely the defect being legislated against. The population now globs
`scripts/tests/test_*.py` — which is how they actually run, since pr-checks.yml invokes
the directory. 32 rows -> 48.

That forced a third Kind. Once test files are in the population, every mutation proof
becomes a row wanting a proof of its own, forever. `PROOF` marks a file whose job is to
prove another guard; a scripts/tests file enforcing a repo invariant with no separate
guard behind it stays GUARD and may cite a mutation case in its own file.

HOOK EXISTENCE WAS STANDING IN FOR HOOK WIRING. Deleting a hook's registration from
.claude/settings.json left the population and the table unchanged, so the row went on
describing a guard that no longer ran — #631's shape one level down. Now derived from
settings.json plus the husky hooks.

THE SUMMARY COUNTS WERE A HAND-KEPT MIRROR AND WERE WRONG ON ARRIVAL: "28 guards, 4
tooling ... 19 have none" against a table holding 27/5/6/3/18. Both reviewers found it
independently. The prose is now parsed and asserted against the table.

TWO FALSE MUTATION GRADES, each with a concrete disarm:
  - test_full_first_page_alone_does_not_end_enumeration sends 50 docs paths then one more
    docs path; disarm pagination to treat a full page as final and it is still all-docs,
    still exempt, still green. Re-pointed at test_protected_path_on_a_LATER_page_is_still_seen,
    which does go red under that mutation.
  - test_the_scan_job_runs_the_out_of_pytest_positive_control asserts only that the script
    exists, is executable, is referenced and is marked; replace its logic with `exit 0` and
    all four pass. ci-prove-ban-detects.sh regraded NONE.

The MUTATION column was also being applied as a curve: three rows graded MUTATION fed the
real script an input only that clause rejects, which is what the rows eight lines away are
graded BEHAVIOUR-ONLY for. Definition sharpened to *witnessed* rather than plausible, and
those regraded. 5 MUTATION / 6 BEHAVIOUR-ONLY / 21 NONE across 32 guards.

THE VOCABULARY EXTRACTOR COULD RETURN A PARTIAL SET. `[A-Z|-]` cannot match `SHIP*)`, so
adding that arm leaves the extracted set non-empty AND equal to the read side — parity
green while the gate desyncs. Emptiness checks cannot see partial degradation. A loose
counterpart now asserts the strict pattern consumed every arm; proven red on exactly that
attack and green on a clean tree. Also: each verdict pattern must be assigned once, since
the extractor unions assignments while the classifier runs the last.

Also: docker-build.yml was itself an unchecked scope mirror (now asserted to be the only
workflow with toolchain container jobs, by parsing container.image rather than grepping —
ci-image.yml names the image because it builds it); the mutant floor is an equality;
e2e-functional.sh reclassified GUARD (it exits 1 on a failed contract assertion);
design-sync-reminder.sh does block the first Stop. The doc now states all six excluded
classes instead of one.

Not done here, filed instead: workflow-owned execution-class metadata to replace
TOOLCHAIN_JOBS, a single shared verdict vocabulary, and an executable clause-level
mutation harness. Each touches a CI-gating or merge-gate path and wants its own review.

580 script-tests pass.

Refs #774
Refs #775

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-13 22:20:51 +02:00
timothyandClaude Opus 5 0bd59b0b6e feat(774,775): one rule for guard populations, one for guard proofs — both enforced
#773's analysis found that the largest recorded failure family is reasoning about a
representative instead of the population (39% of process-failure records), and that the
most common is a check that never ran at all (25%). Both rules had been reinvented
repeatedly and written down nowhere.

Two decision records:

  testing.guard-derives-population-from-source (#774) — a guard enumerates its population
  from a machine-readable authoritative source and asserts set equality both ways. States
  the boundary that keeps it honest: filtering to select the SUBJECT of a per-member
  property is fine; filtering the population before a COMPLETENESS claim is the defect.
  Also separates guard SCOPE (a reviewable policy choice) from guard POPULATION (always
  derived).

  testing.guard-ships-with-mutation-proof (#775) — disarm that clause alone and a named
  test must go red. Behaviour-only coverage is graded separately, because it proves the
  guard reacts, never that it is connected.

Audit findings fixed:

  ci-image-pin stated an invariant it did not check. Its error text says "Every container:
  job must pin ersatztv-ci:<7-char-sha>"; what it asserts is that `grep … | sort -u` yields
  one DISTINCT value. Distinctness is a property of the pins present, so deleting the
  container: block from `test` leaves four pins, one distinct value, and a REQUIRED context
  silently running on the bare runner. test_ci_image_pin_population.py adds the population
  check, keyed on a reviewed registry cross-checked both ways — set equality between two
  DERIVED sets could not see this, because both sides shrink together.

  The verdict vocabulary was written down twice with no cross-check — post-review-verdict.sh
  (write) and check-review-verdict.sh (read). A word in one and not the other sends the
  required status green while the hook still denies. Both vocabularies are now extracted
  from their own source and compared as sets; a test that restated the words would just be
  a third copy. The write side's comment pointing at pretooluse-merge-consent.sh was also
  stale — the hook carries no copy and delegates.

Mechanical enforcement, answered explicitly for both:

  No to a filter-shaped-guard lint. The token is not the defect — ToolCatalogTests filters
  correctly eight lines from a completeness assertion that must not — and it would be a
  string predicate over source, which this repo's record says takes 3+ rounds. Building it
  would be #774 violating #774.

  Yes to enforcing the bookkeeping. docs/guard-inventory.md classifies all 32 guard files;
  test_guard_inventory.py derives the population from the filesystem and call sites,
  asserts set equality both ways, and resolves every claimed proof ref to a real def. A new
  guard cannot ship unclassified; a renamed test cannot leave a row claiming lost coverage.
  What it does NOT check — whether a MUTATION claim is true — is stated, not implied.

Measured: 28 guards, 4 tooling. 6 mutation-proved, 3 behaviour-only, 19 unproven.

Every guard added here was mutation-proved by execution before being believed: neutering
pin_population_faults turned 20 of 25 red; the inventory guard was driven red three ways
(deleted row, new unclassified hook, stale proof ref) and restored green.

573 script-tests pass. Scope limit stated in the doc: inline workflow-job guards are not
in the machine-checked population.

Refs #774
Refs #775

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-13 21:56:52 +02:00
timothyandtimothy cfdab63a3a fix(767): gate the release path on the delimiter ban with a prerequisite job (#770)
Build ErsatzTV Image / Delimiter ban (release path) (push) Successful in 19s
Build ErsatzTV Image / Build & test (.NET) (push) Successful in 9m13s
Build ErsatzTV Image / EF migration integrity (SQLite + MySql) (push) Successful in 6m40s
Build ErsatzTV Image / Functional E2E (curl + UI contracts) (push) Successful in 6m30s
Build ErsatzTV Image / API docs in sync (OpenAPI + endpoint index) (push) Skipped
Build ErsatzTV Image / Formatting (changed .cs conform to .editorconfig) (push) Skipped
Build ErsatzTV Image / Build & push image (amd64) (push) Successful in 4m27s
The delimiter ban protecting `build`'s `Smoke + IPTV E2E` was enforced only by a pytest in `script-tests` — `on: pull_request`, not a required context — so nothing re-checked it on a `v*` tag push, which is exactly when the candidate image is published. A `scan` job now runs the ban test and `build` lists it in `needs:`, so a red `scan` skips `build` and no image is built.

Measured both directions without cutting a release: run 1928 (poisoned Smoke) → scan failed, `Build & push` skipped; run 1929 (control) → scan green, build ran.

The gate rests on three different KINDS of check, because each single kind was defeated in review: the ban test; an execution probe against a poisoned copy with all three `env:` tiers layered; and `scripts/ci-prove-ban-detects.sh`, which is not a test — it poisons the real checkout and vouches only for the ban test's `build` parametrisation failing. Eight review rounds; rounds 1-5 each found a real defect in the previous fix.

Refs: #767
Decisions-Edit: yes
Co-authored-by: Timothy <timothy@noreply.gitea.tblindustries.be>
2026-08-13 18:04:52 +00:00
timothyandtimothy 884ac8a7e9 fix(756): extend the dropped-step guard to docker-build.yml's required jobs, where a drop is fail-OPEN (#768)
Build ErsatzTV Image / Build & test (.NET) (push) Successful in 9m0s
Build ErsatzTV Image / EF migration integrity (SQLite + MySql) (push) Successful in 6m24s
Build ErsatzTV Image / Functional E2E (curl + UI contracts) (push) Failing after 6m8s
Build ErsatzTV Image / API docs in sync (OpenAPI + endpoint index) (push) Skipped
Build ErsatzTV Image / Formatting (changed .cs conform to .editorconfig) (push) Skipped
Build ErsatzTV Image / Build & push image (amd64) (push) Successful in 4m42s
A `run:` body the runner declines to interpolate is dropped, and the job still
concludes `success` (#751). #751 fixed that in review-verdict.yml, where the
failure is fail-CLOSED. This closes the two places where it is fail-OPEN:
`Build & test (.NET)` and `EF migration integrity (SQLite + MySql)` are the
other two required contexts on `main`, so a dropped step there sends a required
check green having done no work.

Per-STEP markers, not per-job as proposed: a marker on the first step only
proves the job began, while the drop that costs something is `Test`, `Build` or
a migration replay. The trailing guard carries no `if:` — with a dozen steps,
`always()` would announce a false "these steps never executed" on every ordinary
red build; the default `success()` is correct because guard-skipped implies
job-red. Plus a ban on the raw `${{` opener in `test`, `migrations` and `build`,
which makes the class unreachable rather than merely caught. `build` is included
because its Smoke step runs AFTER the image is pushed.

Measured live on the build lane in both directions: probe #765 (drop caught,
sole failure in the job) and #766 (a failing continue-on-error step does not
skip the guard). 510 tests, 30 mutations killed across two harnesses, five cold
review rounds across two model families.

Residual tracked as #767: the `build` ban is review-time only, not fail-closed
on the release path.

fixes #756

Co-authored-by: Timothy <timothy@noreply.gitea.tblindustries.be>
2026-08-10 23:35:08 +00:00
timothyandClaude Opus 5 e133c11fde fix(751): rebase onto #760, close the fail-OPEN twin, and retire four claims that had rotted
Fourth cold review round: no Blocker, no new path to a green `review-verdict/h10` on an
unreviewed head, and it independently re-measured 14 claims in the diff. It also caught
that this branch was about to revert someone else's work, and found the one remaining
place where the nil-slice/clamp lesson had not been applied.

REBASED ONTO 9881d1ff8 (#760), which landed while this was in review. The tell was the
one CLAUDE.md documents: `git diff origin/main HEAD` showed deletions I never made —
`docs/decisions/records/mcp/tool-schema-openapi-parity.md` and edits to `docs/mcp.md`.
Pushing would have reverted them. The generated catalog was regenerated rather than
trusted to the rebase, and verified to carry BOTH records.

THE FAIL-OPEN TWIN, one function further on than the last round reached.
`/statuses/{sha}?limit=100` is read twice — for the high-water mark and for the
post-write race check — and neither pages, while `limit` clamps to 50. So "no raced row
on page 1" does not establish "no race": a human `BLOCKED` landing in the write window
can sit on a page the job never reads, leaving a forged green over a rejection. This is
the ONE path in the design whose failure direction is toward SUCCESS.

Measured rather than argued: a probe head reached 33 rows after ~5 runs against a cap of
50, and the ordering is only coarsely newest-first (`33,32,31,30,28,29,27,…`), so a few
CI reruns reach it and the row's position cannot be relied on — which this workflow's own
comment already disclaimed. That comment ALSO claimed order-independence flatly; false
once the page clamps, so it now says what actually holds and what saves us.

The mitigation is conservative rather than complete: if page 1 shows no race, page 2 is
read, and any rows there — or an unreadable page 2 — count as "assume raced" and repair
to `pending`. Uncertainty resolves to a stall a reviewer can clear, never to leaving
green. Real paging of both reads, including the high-water mark, is #763.

A THIRD empty shape turned up while modelling it: `/statuses/{sha}` past the end returns
`[]`, where `/commits/{sha}/status` returns `{"statuses": null}` and the timeline returns
bare `null`. Three endpoints, three shapes, one server. The code tolerates both here
because guessing per endpoint has now been wrong twice.

MY OWN COVERAGE GAP, found by mutation rather than by reading: inverting the
unreadable-history-page-2 branch reddened NOTHING. Now tested both ways. Same class as
the two untested refuse branches the review flagged, which are also covered now.

FOUR CLAIMS RETIRED, all of the shape this issue is about — text that reads as checked
and is not:

* "18 tests fail" for the corrected-double mutation is 21 now, because rounds 3-4 added
  three fence-dependent tests. Broke a number while documenting broken numbers. Both
  citations now give the range and lead with the invariant.
* "measured: 4, 2, 9, 5, 10" first-page timeline events are 7, 5, 9, 6, 10 today.
  Timelines grow; the figures are gone and the invariant stated instead — a PR is created
  by a push, and a push is an event, so page 1 is never empty.
* The strict test's docstring said "RAW TEXT" while the test reads parsed `run:` scalars,
  with a dead `raw =` assignment left behind (a new ruff F841).
* `len(bodies) >= 3` had zero slack: deleting the optional jq-preflight step reddened it
  with a message asserting the classifier had not been examined, which was untrue. The
  length assertion already carries the property, so the count only needs to be non-empty.

Also: dead `_workflow_expression_fields_text` removed; assertion C's regex now catches
`function foo {` as well as `foo() {`; the page-2 refusal says a human verdict clears it.

Verification: 460 green. Five more mutations as intended — deleting the history page-2
check (red), accepting an unreadable one (red, after the coverage gap was closed),
accepting a garbage page 2 in read_existing_verdict (red), hiding the marker write behind
`function mk {` (red), and the earlier twenty-one still hold. Live re-probe on this body
follows.

Refs: #751
Decisions-Edit: yes
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-10 19:42:58 +02:00
timothyandClaude Opus 5 951dae26a9 fix(751): the truncation guard I added was DEAD CODE — the page cap is 50, not 100
Third review round, cut short by a transport hang after ~11h, but it had already found
the thing that mattered: the guard added last round could never fire.

`read_existing_verdict` asks for `limit=100` and refused when the page came back with
100 rows. This instance caps `limit` at the server-wide `MAX_RESPONSE_ITEMS`, MEASURED
AT 50 — `/issues?limit=100` returns 50 items. A response can therefore never carry 100
rows, so the comparison was unreachable and the hole it was written for was still open.

The sting is that the repo already knew. `scripts/pr-changed-files.sh`, two test files
and `ci.script-tests-job` all document that Gitea caps `limit` at `MAX_RESPONSE_ITEMS`
(50 in the PR #619 measurement). The review found it by grepping this codebase, not
upstream. Writing a guard against a constant the repo had already measured as wrong is
the same failure as the unfaithful test double two rounds ago: a number believed rather
than checked.

So this is now the THIRD guard for one hole, and the first two were both no-ops:

  1. `.statuses | length` vs `.total_count` — `total_count` is the count for the PAGE
     RETURNED, not the commit (`?limit=1` on a 6-context head gives
     `len=1, total_count=1`). Equal by construction.
  2. "refuse when the page is full at 100" — dead code, as above.
  3. Ask the server. Completeness is needed ONLY to justify "no verdict exists on this
     head", so when the row is absent from page 1 the job reads PAGE 2, and refuses if
     it carries anything. Cap-independent: no reconfiguration re-breaks it, and nothing
     is hardcoded that a measurement could contradict.

Measured to make sure page 2 is real rather than assumed: `?limit=3&page=2` on
3aed43c6 returns three further rows, and `page=9` returns the same `statuses: null`
terminator the timeline uses.

The probe is skipped when the row IS on page 1, because there is nothing to learn — the
combined endpoint returns the latest status per CONTEXT, so a context cannot recur on a
later page.

TEST-DOUBLE FIDELITY, again the fiddly part. The stub now honours `page`, and that guard
had to go BEFORE the read-counting modes: `appears-on-read:N` counts how many times the
job has LOOKED at the status, and the completeness probe is part of the same look, not a
further one. Letting it increment those counters shifted "the verdict appears on read N"
by one and broke three mid-run-race tests — a false red that would have been easy to
"fix" by adjusting the expected counts, which would have quietly destroyed what those
three tests measure.

Verification: 455 green. Four more mutations, each as intended — deleting the probe
(red), accepting a non-empty page 2 (red), refusing even on an EMPTY page 2 (red, the
deadlock control), and reverting the twin `statuses: null` gate (48 red). Twenty-one
mutations across four rounds.

Refs: #751
Decisions-Edit: yes
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-10 19:22:50 +02:00
timothyandClaude Opus 5 46ec532745 fix(751): re-review round — a truncation hole, and the tests that closed findings needed closing
Cross-family re-review of the previous fix commit. It did NOT pass, and it was right
not to: the round that fixed the reviewers' findings introduced two of its own, both in
the tests written to close them. That is this file's recurring shape, and it is the
reason the fix commit gets re-reviewed rather than the initial diff only.

TRUNCATION (High). `read_existing_verdict` asks for 100 statuses and never checked
whether the page was full. If a head ever carried more contexts than that, an existing
`review-verdict/h10` could fall off page 1, the job would conclude no verdict exists,
and it could post an exemption `success` over a human `failure` — the worst thing this
gate can do. Six contexts exist today, so this guards a future shape, not a live bug.

BUT THE PROPOSED GUARD WAS A NO-OP, and measuring is what showed it. The review asked
for `.statuses | length` compared against `.total_count`. On this instance `total_count`
is the count for the PAGE RETURNED, not for the commit: on 3aed43c6 (6 contexts),
`?limit=1` gives `len=1, total_count=1` and `?limit=3` gives `len=3, total_count=3`.
The two are equal by construction, so that check would have read as a completeness
proof while proving nothing — and it would have been the second guard in this file to
look like a check and not be one. What IS observable is a page at the requested limit,
which means "maybe more", so that is now treated as unreadable: post nothing, leave the
required check absent. The stub mirrors the per-page `total_count` deliberately, so the
new test cannot pass for the wrong reason either.

THE TESTS THAT CLOSED THE LAST ROUND'S FINDINGS:

* The behavioural guard test — added to answer "a bare `exit 1` substring is satisfiable
  by dead code" — extracted the two marker lines BY TEXT and ran them alone. That
  passes even if the write is moved into a function nobody calls: the extractor finds
  the text, runs it at top level, the marker appears, and the test reports the guard
  proven while production writes no marker. It now executes the classify body's real
  PREFIX down to and including the write, which reproduces the production control flow
  instead of a reconstruction of it. Mutation: move the write into an uncalled function
  -> RED (it previously passed).
* The anti-vacuity check — added to replace an over-broad assertion — hand-counted
  `run:` keys with a regex that only matched an indented `run:` starting `|` or `>`. It
  false-redded legal spellings (`- run: |`, a single-line `run: echo ok`) and could
  count a `run: |` sitting inside a heredoc. Hand-parsing YAML to validate a YAML parse
  is the wrong shape: it adds a second, worse parser whose every disagreement is a
  false alarm, and a red here blocks all merges. Now asserted on CONTENT — the walk
  reached >=3 bodies and one over 5000 chars.

FALSE RED, THIRD INSTANCE IN THIS FILE. The repo-wide expression test scanned raw file
text, so a delimiter in an inert top-level YAML comment redded the repo even though the
runner never evaluates it. It now scans PARSED scalars: PyYAML drops YAML comments,
while a `run:` body is itself a scalar and keeps its SHELL comments — which is exactly
the distinction that matters, since inside a `run:` scalar a comment is not inert.
Verified in both directions: an inert top-level comment passes, the same payload in a
run-body comment still reds.

Also: the `total_count` zero check now requires the JSON TYPE to be number — `jq -r`
renders `0` and `"0"` identically, so a text compare accepted a corrupted
`"total_count": "0"` as "no statuses".

Verification: 455 green. Six further mutations, each landing as intended — the uncalled
function (red), an inert YAML comment (PASSES, no false red), the same payload in a
run-body comment (red), accepting a full status page (red), comparing total_count as
text (red), and breaking the YAML walk's job key (red). Seventeen mutations across the
three rounds.

Re-probe of both live controls follows on this body; the previous probe evidence was
taken before this commit and no longer describes what would merge.

Refs: #751
Decisions-Edit: yes
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-10 19:22:50 +02:00
timothyandClaude Opus 5 edd8d3d9c9 fix(751): review round — the twin null-shape, a governance self-exemption, and four over-claims
Two independent cold reviews (a cross-family GPT-5.6 pass and an isolated Opus pass).
Neither found a path to a green `review-verdict/h10` on an unreviewed head. Both found
real defects BESIDE the fix, which is the failure mode this file keeps producing.

THE TWIN, and the reason not to trust "I fixed the two I could see". `GET
/commits/{sha}/status` returns `statuses: null` — not `[]` — for a head with no
statuses yet: `{"state":"pending","total_count":0,"statuses":null}`, measured on PR
#739's head. `read_existing_verdict` gated on `.statuses | type == "array"` and took
its `exit 1` path, posting NOTHING. Fail-closed, but the user-visible outcome is the
one this issue is about: an exempt PR with no status and, since #743, no bypass. Its
double printed `{"statuses": []}` at all three no-verdict sites, so that branch was
unreachable in the suite — the same unfaithful-double story as the timeline, one
function over. `null` is accepted only when `total_count` is 0, so a body that merely
lost its array is still refused and an existing verdict is still protected. Swept
`scripts/pr-changed-files.sh` too: `pulls/{n}/files` returns `[]`, unaffected. The
generalisable rule is that a nil Go slice serialises to `null`, so every list-shaped
field on this API is suspect and only a per-endpoint measurement settles it.

A GOVERNANCE SELF-EXEMPTION, reachable again precisely because this change works.
`DOCS_ONLY` matched `CLAUDE.md` and `AGENTS.md` — the documents that DEFINE the
completion protocol, the merge-consent convention and the H10 rule. Driving the real
classify body with a lone `CLAUDE.md` change produced `review-verdict/h10=success`.
Protecting `.claude/` while the file specifying what it enforces stayed exemptible is
the same self-exemption the header rules out, one directory over. Both added to
PROTECTED; `README.md` deliberately not (ordinary prose, no enforcement).

FOUR OVER-CLAIMS, corrected rather than defended:

* The repo-wide expression test does NOT catch "any payload that cannot evaluate".
  It checks the HEAD TOKEN of each dotted path. `${{ github.ref == }}` and
  `${{ …head.sha + }}` pass; so does a renamed output, since tokens after the first
  are skipped by design. Claim corrected in the docstring, `docs/ci-cd.md` and the
  record. The test is kept permissive on purpose: a red here blocks every merge.
* The strict test's anti-vacuity half banned expressions ANYWHERE outside
  `with:`/`env:`, so the standard `if: ${{ always() }}` spelling and even a delimiter
  in an inert top-level comment went red — a guard more dangerous than its target.
  Replaced with the honest property: the YAML walk saw every `run:` body it declares.
* The `if:` assertion demanded the bare `always()` exactly; now normalised, since the
  wrapped form is identical to the runner.
* `exit 1` was matched anywhere in the guard body, so an unreachable
  `if false; then exit 1; fi` satisfied it while the real branch said `exit 0`. Now
  required INSIDE the missing-marker branch — and the new behavioural test settles it
  properly by EXECUTING the guard body both ways.
* The record asserted a repo-wide obligation to guard consequential steps. It is not
  repo-wide: `docker-build.yml`'s `test`/`migrations` are also required contexts and a
  dropped step there is fail-OPEN (green having done no work), strictly worse than
  here. Scoped to this file and tracked as #756 rather than asserted as done.

Also: comments in both files still said it was unestablished whether a later step runs
after a drop — runs 1863/1866 established it, so they now record the measurement; a
cited test name that never existed; `kind` leaked to global scope; a mangled comment
wrap; and an already-false "one event on page 1".

Hardening of my own: `null` now counts as exhaustion only from page 2 ON. Every real
PR's first page carries events (4, 2, 9, 5, 10 across #752/#753/#749/#739/#717), so a
terminator on page 1 means no page was ever read, and certifying "no retarget" from a
response we cannot explain is the one thing the fence exists to refuse. Narrows rather
than closes it: a wrong `null` on page 3 still reads as exhaustion.

Verification: 137 in this file / 452 total green; ELEVEN mutations each red —
reintroducing the defect, deleting the guard, deleting the marker write, removing
`if: always()`, `exit 1`→`exit 0`, a delimiter in the guard body, the fence gate (20
red), the TWIN gate (70 red), dropping the governance paths, accepting a null first
page, and diverging the marker path between the two steps.

Refs: #751
Decisions-Edit: yes
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-10 19:22:50 +02:00
timothyandClaude Opus 5 40b3747434 fix(751): the fence never trusted its count — a page past the end is null, not []
The scratch-base probe found a SECOND, independent reason `review-verdict/h10` was
never posted automatically. Fixing the dropped step alone would NOT have restored the
exemptions.

`count_retargets` pages `/issues/{n}/timeline` and trusts its count only on a
validated empty page, gated on `type == "array"`. But a page past the end of that
endpoint is the JSON value `null` — measured at Gitea 1.27.1 on PR #752, four bytes —
so the real terminator read as UNREADABLE. The walk never reached a validated empty
page, `rt_ok` was never `yes` for ANY pull request, and the fence therefore withheld
EVERY exemption `success`. Renovate and docs-only PRs got no status at all: the same
user-visible outcome as the dropped step, by a completely unrelated route.

The instance is not consistent between endpoints — `/issues/{n}/comments` returns `[]`
when empty — so both shapes terminate the walk now, and the regression test is
parameterised over both. The type is read as a VALUE (`case` over `jq -r 'type'`)
rather than through `jq -e`, whose exit-status semantics already bit this workflow at
jq 1.6 (#647).

TWO REASONS THIS LOOKED DELIBERATE RATHER THAN BROKEN, both worth generalising:

* It had never run. This fence shipped in 8f6d4f443 — the same commit whose prose
  comment stopped the classify step executing at all. Merging a guard and first
  executing it are different events, and only the second tells you anything.
* The test double asserted the wrong shape while claiming to be measured. Its comment
  read "Real shapes, measured on this instance and deliberately mirrored" and it
  printed `[]` past the end, so the `array`-only gate was never exercised by the suite
  either. Correcting the double and restoring the old gate turns 18 TESTS RED — every
  one of them had been green for the wrong reason. A fidelity claim in a double is an
  assertion and it decays like any other.

The new test asserts the POSTED STATUS, not the log: on the real probe run the log
said `Decision: state=success` and the job still posted nothing, so the decision and
the write are separate events and only the write is what a merge reads.

Also here, both found while editing this code:

* `ci.verdict-write-retarget-fence` stated this as a narrow residual ("a timeline over
  the 20-page cap can never be exempted") when the behaviour was universal. Corrected
  in place rather than left as a checked-looking claim that talks the next reader out
  of verifying.
* The workflow cited `ci.paged-endpoint-completeness`, a key that has never existed as
  a record anywhere. Repointed at the record that actually owns this walk.

Marker hardening from the probe: `RUNNER_TEMP` is `/tmp` on this runner, not a private
per-job directory, so the start marker is now keyed on the run id and attempt. The
lane starts a container per job today, which makes a fixed name fresh in practice, but
that is a property of the lane and a stale marker would make the guard PASS on a run
whose step was dropped — the exact silent pass it exists to remove.

Verification: 446 passed; M7 (revert only the type gate, keep the corrected double) →
18 red. Probe evidence in the issue.

Refs: #751
Decisions-Edit: yes
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-10 19:22:50 +02:00
timothyandtimothy 9881d1ff81 fix(754,757): declare graphicsElementIds + padToNearestMinute, and pin every MCP tool to its OpenAPI contract (#760)
Build ErsatzTV Image / Build & test (.NET) (push) Successful in 9m56s
Build ErsatzTV Image / EF migration integrity (SQLite + MySql) (push) Successful in 7m1s
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Build ErsatzTV Image / API docs in sync (OpenAPI + endpoint index) (push) Skipped
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Build ErsatzTV Image / Build & push image (amd64) (push) Successful in 4m37s
Co-authored-by: Timothy <timothy@noreply.gitea.tblindustries.be>
2026-08-06 20:42:37 +00:00
timothyandClaude Opus 5 f822e4737c docs(743): label the second attested claim, close the survivor list, state the rule in CLAUDE.md
PR Gates / CI image pin matches docker/ci (pull_request) Successful in 14s
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review-verdict/h10 Review-verdict: MERGEABLE @ f822e47 (base: main)
Round 3 returned MERGEABLE with three LOW documentation findings. Batched
before posting the verdict, since a new sha voids both the CI run and the
verdict.

- `ci-cd.md` labelled the unprobed half of the `enable_push` bullet but stated
  the `block_admin_merge_override` counterfactual flatly one bullet below —
  the same measured-vs-attested flattening round 2 fixed, one site over. Now
  labelled, with why it was not probed (verifying it means merging an
  unreviewed PR).
- `release.verdict-status-check` said "what survives is the forgery list
  above". That record's job is enumerating survivors, so an unqualified "what
  survives is X" reads as exhaustive — and it omitted the admin residual, which
  is a SKIP route rather than a forgery one. Added.
- `CLAUDE.md` never learned the rule. It is the always-read surface, and it
  still framed a direct `git push origin main` as a live path while describing
  a docs-only *push* exemption for a push the server now refuses. My corpus
  sweep covered `docs/` and missed the file that carries the docs-update rule.

Note on what remains unverified rather than closed: neither direction of
`block_admin_merge_override` was measured, and whether Gitea treats an ABSENT
required context as blocking (versus satisfied) is asserted by our docs but
not proven — the combined status on this PR reads `success` with
`review-verdict/h10` absent. Both belong to #747's re-verification sweep.

Verification: 441/441 script tests; decisions-validate OK.

refs #743

Decisions-Edit: yes
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-06 00:35:41 +02:00
timothyandClaude Opus 5 6af65ba5c5 fix(743): re-tense the third stale site, and pin the two surviving mutants
PR Gates / CI image pin matches docker/ci (pull_request) Successful in 35s
PR Gates / Docs update reminder (pull_request) Successful in 42s
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PR Gates / decisions lifecycle (pull_request) Successful in 1m25s
PR Gates / Script tests (pytest) (pull_request) Successful in 1m58s
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Build ErsatzTV Image / EF migration integrity (SQLite + MySql) (pull_request) Successful in 20m0s
Build ErsatzTV Image / Build & push image (amd64) (pull_request) Skipped
Round 2 of review. One blocking finding, and it is the same defect class as
round 1's: a present-tense claim that this PR falsified.

`release.verdict-status-check` — the record ABOUT the h10 status check — still
said "direct pushes to `main` are server-side permitted, so the gate can be
skipped without forging anything". A reader resolving that key from the catalog
would conclude the control does not exist. Round 1 corrected `ci-cd.md` and
`ci.actions-credential-scoping` and I stopped at the two sites I had edited,
instead of sweeping the corpus by SUBJECT. Swept properly this time
(`server-side permitted`, `bypassable`, `without forging`, `push whitelist`,
`enable_push`): this was the only remaining stale site.

Test gaps the reviewer found by mutation testing, now closed. Both mutants
SURVIVED the suite as shipped — the round-1 fixes were correct but unpinned:

- dropping `|| [ -n "${_h11_local_ref:-}" ]` → an unterminated final line is
  dropped. Two directions, and the dangerous one is not the obvious one: a
  dropped *branch* line leaves only tag refs and grants the exemption to a push
  containing a branch. Both pinned.
- dropping `[ -t 0 ] ||` → the hook hangs forever on an interactive run. Pinned
  with a real pty and an explicit timeout, so a regression fails cleanly rather
  than hanging a CI job. Verified the mutant is killed by exactly that test
  (and that it dies via the timeout, 32s).

Also from review, non-blocking:

- `ci-cd.md:951` cited `enable_push: false` alone as what closed #743 — the
  precise thing the new record says never to do, since the force-merge route
  also skipped the gate with no forgery. Now cites both fields.
- `ci-cd.md` flattened measured and source-attested into one 403: only the
  contents API was probed; the web editor/upload/apply-patch paths share the
  predicate but were not. Separated.
- `format-as-you-touch-rebase` still said "the documented sequence" and
  "always" for the release-cut behind-ness. `docs/ci-cd.md` documents the tag
  step, not the release-notes-PR flow, and the frequency is attested by one
  observed cut. Attributed to #719 instead.
- Documented the operator recovery path. `block_admin_merge_override: true`
  removes the `force_merge` escape that used to unstick a wrongly-red required
  context — that escape WAS the bypass, so it is gone by design, and the
  recovery (fix the status; last resort PATCH the field, merge, set it back)
  needed to be written down rather than left implicit in a residual.

Verification: 441/441 script tests; decisions-validate OK; PyYAML parses all
193 records; both mutants confirmed killed and the hook restored byte-identical.

fixes #719

Decisions-Edit: yes
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-06 00:10:45 +02:00
timothyandClaude Opus 5 6d80343320 fix(743): close the admin force-merge bypass; the push half alone was not enough
Independent review found the record repeated on the merge path exactly the
mistake it had just diagnosed on the push path.

The push argument was: a whitelist naming `timothy` closes nothing, because
`timothy` is the identity every credential already holds. The merge path had
the identical shape and went unchecked — `block_admin_merge_override` defaults
to `false`, so `CanBypassBranchProtection` returns true for a repo admin and
`POST /pulls/{n}/merge` with `force_merge: true` merges straight past a missing
or red `review-verdict/h10`. One API call, no forgery, no PATCH — cheaper than
the push route this change had just removed.

So `enable_push: false` alone did NOT make the gate load-bearing, which is
what the record's headline sentence claimed. `main` now carries both fields;
they are one control and neither is citable alone.

An admin-shaped control that exempts the only admin exempts everybody.

Other review findings addressed:

- H11's owning record (`release.format-as-you-touch-rebase`) now documents the
  #719 tag-only carve-out. It is a narrowing of an existing convention, so it
  amends that record rather than adding a new one — including the two details
  that are easy to regress (the .husky/pre-push forwarding, without which the
  exemption is dead code the unit tests still pass over; and the at-least-one-
  ref guard against vacuous exemption).
- The record now states which write surfaces were enumerated and how each was
  established — contents-API refusal is MEASURED here (403 `user cannot commit
  to repo`), apply-patch/revert/cherry-pick are source-attested only. The
  admin force-merge bypass is likewise marked source-attested, not probed:
  probing it means merging an unreviewed PR.
- prepush-rebase-check.sh: process a final ref line with no trailing newline
  (previously dropped, which silently reinstated the #719 block), and skip the
  stdin read on a TTY so an interactive run does not hang.
- Corrected a citation the review caught: docs/ci-cd.md documents the tag step,
  not a release-notes-PR flow. Cite #719 for the observed flow instead.

Also fixed a frontmatter break this round introduced: a `: ` inside the
unquoted `rule:` scalar. PyYAML rejected it while the dependency-free reader
accepted it, so only `scripts/tests` caught it.

Verification: 438/438 script tests pass; decisions-validate OK; PyYAML parses
all three touched records.

refs #743 #719

Decisions-Edit: yes
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-05 23:52:28 +02:00
timothyandClaude Opus 5 691a7acc77 fix(743): disable direct pushes to main so review-verdict/h10 is on the only path to main
Gitea evaluates `status_check_contexts` when it MERGES a PR. A direct
`git push origin HEAD:main` never consults them, so the whole h10 gate was
skippable with no forgery — strictly cheaper than every route enumerated in
#697. `main` now carries `enable_push: false`.

Measured on this instance (Gitea 1.27.1) against a throwaway `probe-743-*`
rule rather than against `main`:

  enable_push: false                      -> push by timothy (site admin)
                                             REFUSED, pre-receive hook declined
  enable_push_whitelist + ["timothy"]     -> identical push SUCCEEDED

That second line is why this is a DISABLE and not a whitelist: #743 offered the
two as interchangeable, but the only write accounts here are `timothy` (site
admin) and `renovate`, and every credential in the threat model — agent
sessions, PATs, the injected GITEA_TOKEN — acts as `timothy`. A whitelist
naming `timothy` would have ticked the box and closed nothing.

Then demonstrated on `main` itself, per the issue's Done-when: a direct push
was refused, and a tag-only push from the same worktree succeeded (tags are
governed by `tag_protections`, which is empty). The release cut is unaffected.

What this closes: the write-only credential routes — the injected GITEA_TOKEN,
RENOVATE_TOKEN, any non-admin collaborator PAT. What it does NOT close: an
admin credential can PATCH the protection off, push, and restore it. Recorded
as an accepted residual rather than implied to be covered.

Also corrects two claims the probe contradicted, and one that the mid-session
Gitea upgrade (1.25.4 -> 1.27.1) invalidated:

- ci-cd.md and ci.actions-credential-scoping both said "a push whitelist would
  close more of this class than the 1.26 upgrade". The whitelist form closes
  nothing here; corrected in place.
- ci.actions-credential-scoping's rule said "do NOT add a `permissions:` key
  while this instance is below Gitea 1.26.0". That precondition no longer
  holds at 1.27.1, so the directive now misleads. Corrected — while noting the
  consequence is still UNVERIFIED: `/api/v1/settings/actions` 404s at 1.27.1,
  so whether `permissions:` binds here was not probed. The upgrade alone is
  not evidence the constraint works.
- That record's 1.25.4 measurements are now dated, not current. Flagged as
  such rather than silently re-pinned to a version they were never taken on.

#743's fourth box (docker-build.yml `persist-credentials: false`) is decided
in the record and deliberately not done here: two of its checkout steps run
`git fetch ... || true` feeding the changed-file skip logic, so a credential
regression would be silent rather than loud. Drop the `|| true` masking first.

fixes #743

Decisions-Edit: yes
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-05 23:31:45 +02:00
timothyandClaude Opus 5 b91939e5c4 fix(697): correct the overclaims three adversarial review rounds found
PR Gates / CI image pin matches docker/ci (pull_request) Successful in 22s
PR Gates / Docs update reminder (pull_request) Successful in 26s
PR Gates / decisions lifecycle (pull_request) Successful in 41s
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review-verdict/h10 Review-verdict: MERGEABLE @ b91939e (base: main)
Build ErsatzTV Image / API docs in sync (OpenAPI + endpoint index) (pull_request) Successful in 59s
PR Gates / Script tests (pytest) (pull_request) Successful in 1m56s
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Round 1 BLOCKED (1 Blocker, 4 High, 3 Medium, 2 Low); round 2 BLOCKED on the fix
(1 Blocker, 2 High, 4 Medium, 2 Low); round 3 BLOCKED on one Medium. Every
finding re-verified against the live instance before acting.

ROUND 2 — the blocker was self-inflicted and the local gate could not see it.
Adding `branches: [main]` to ci-image.yml re-points `ci-image-pin`'s `expected`
at the editing commit, staling all five `container:` pins and failing that
BLOCKING job — for a change altering zero bytes of the toolchain image.
Reproduced: expected=ed9dd6254 vs pins=32747a0. Reverted here (the commit was
amended, so no commit on the branch touches that path) and filed as #744.

That edit had also FALSIFIED its own justification: branch publishing IS
load-bearing — docs/ci-cd.md documents the rebase-recovery flow as "let
ci-image.yml publish :<short sha>, then bump the pin", which is how you satisfy
ci-image-pin from inside a PR. Reverting also keeps three trigger descriptions
true (ci-cd.md:1043, the recovery flow, pr-checks.yml's escape-hatch comment).

Also fixed:
  - gate-trigger-base-resolved.md was the file round 1's fix did not touch, and
    still said "no workflow route retains human provenance" — false, since a
    PR-added workflow can reference RENOVATE_TOKEN. Its `rule:` also kept the
    race framing, and `rule:` is what the catalog and MemPalace mirror.
  - `mechanics:` claimed "independent review confirmed no CI consumption breaks".
    It confirmed no such thing. Round 3 then caught the REPLACEMENT sentence
    making the same class of error: only the `container:` pull is exercised by a
    PR, because `build` carries `if: github.event_name != 'pull_request'` and
    cache-to/cache-from live only there. Those and the base-image pull first run
    on the post-merge push to main — a wrong inference reddens main, not the PR.
  - A fourth surviving route was unnamed: docker-build.yml publishes :prod from a
    `v*` tag push and a tag may point at any commit (tag protections are empty).
    "three surviving routes" became "at least these" — a count reads as complete.
  - Unmarked inferences, a "three later sections" that undercounted four, a
    dangling "the two items below", and a #744 rationale that stated the pin toll
    without its documented remedy.

Local gate: 432 script tests pass; `decisions_validate.py --base origin/main
--head HEAD` and `build_decisions_catalog.py --check` both exit 0; ci-image-pin
recomputed by hand and matching the pinned commit. The record is 62 prose lines
against a 60-line ceiling that is a `::warning::` by design (#520) — the blocking
constraint is the 2-25% minority band, currently 10.8%.

Refs #697, #742, #743, #744.

Decisions-Edit: yes
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-05 21:23:43 +02:00
timothyandClaude Opus 5 e298bb291e fix(697): scope CI's registry credential so head-resolved workflows cannot forge review-verdict/h10
`REGISTRY_USER`/`REGISTRY_PASSWORD` were the ADMIN account's basic auth, and
`docker-build.yml` triggers on `pull_request` — head-resolved — so a PR's own
code was handed instance-admin credentials. Basic auth carries no scope, so the
same secret that pushes an image administers every repo on the instance and can
POST `review-verdict/h10`, the required context that makes merge-consent derived
rather than assertable. Refs #697.

Fixed at the credential, not the triggers: patching triggers enumerates
instances of "a ref-resolved workflow obtains status-capable credentials", and
adding a new workflow file is itself a route. `REGISTRY_PASSWORD` is now a PAT
scoped `write:package` + `read:repository`.

Verified on Gitea 1.25.4, not inferred:
  - registry push of a probe tag SUCCEEDED (cleaned up, confirmed 404)
  - GET /commits/{sha}/status SUCCEEDED (what ci-detect-already-validated.sh does)
  - POST /statuses/{sha} REFUSED, HTTP 403:
    required=[write:repository], token scope=write:package,read:repository

Scope of what this closes, stated without overclaim. It closes the instance-wide
admin escalation and that credential's durable forgery route — durable because a
status POSTed with a USER credential carries a real `creator` and is inherited as
a human verdict, while an Actions job's carries `creator: null` and is re-derived.
It does NOT close the class. Three things survive it:

  - `RENOVATE_TOKEN` is a `write:repository` PAT of a real bot account in the
    SAME secret store, so it also posts with non-null `creator`. It cannot be
    scoped down (Renovate needs repo write), and secrets are a per-repo store
    that any PR-added workflow can reference. Closing this needs the provenance
    check tightened to an allow-list of approved reviewers.
  - Every job still receives a write-capable `GITEA_TOKEN`. `permissions:` YAML
    is a no-op before Gitea 1.26.0 and no `app.ini` lever exists at any version;
    only >=1.26 with the Actions default set to Restricted binds it.
    Tracked in server-management#714.
  - Branch protection binds the context NAME, not its issuer, so any write-scoped
    personal token forges the status with genuine human provenance. Unfixable
    in-repo. `h10` is a process guard, not a security boundary against push access.

Auditing the secret STORE rather than the workflow set also surfaced
`SERVERMGMT_DEPLOY_KEY`, still present though the `bump-prod-compose` job that
used it was removed in 1b5efd7b9 — an SSH deploy key to another repo, obtainable
by any PR-added workflow, with no remaining benefit.

Decisions-Edit: yes
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-05 20:34:34 +02:00
timothy a2b3a56d93 Merge pull request 'fix(674,688): cross-check decision frontmatter against PyYAML; split the ceiling calibration claim' (#725) from fix/674-688-decisions-validator into main
Build ErsatzTV Image / API docs in sync (OpenAPI + endpoint index) (push) Has been skipped
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2026-08-04 21:43:10 +00:00
timothyandClaude Opus 5 efc34a3481 fix(688): pin p95's inclusivity; drop a stale ratio and hedge the gap width
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review-verdict/h10 Review-verdict: MERGEABLE @ efc34a3 (base: main)
Round 7's second reviewer returned MERGEABLE on the previous head after re-measuring
every figure and running a 48-mutant battery — and reported ZERO wrong or unverified
numbers, which ends this branch's five-commit streak of them. It also independently
confirmed the round-6 adjudication: at `f394d6ce`, the sha the record cites, the #620-era
distribution really is n=167, min 2, median 26, p90 52, next value 83. All five figures
correct as written.

This commit clears its four non-blocking items.

- `marks_tail`'s UPPER inclusivity was the last meaningful surviving mutant: `ceiling <=
  p95` mutated to `<` survived the whole suite. Notice-only rather than blocking, but an
  unpinned boundary is how a documented claim quietly stops being true — the same defect
  the previous commit fixed for the coarse band. Both ends now pinned; verified the
  mutant fails.
- "the largest by ~1.6x" was TRUE at `f394d6ce` (230/147 = 1.56) and is stale today
  (230/198 = 1.16). Unlike the consolidation table two paragraphs down, that sentence was
  never scoped to a sha — so rather than re-pin a number that will rot again, it now just
  says "the longest", which stays true however the tail moves.
- The validator docstring asserted the 60->81 gap flatly; a 70-line record existed as
  recently as `8f6d4f443^`, so the gap's WIDTH is more volatile than that implied. Hedged
  to say it is the shape as measured today, not a constant. Nothing asserts it either way.
- Rewrapped a mid-sentence line break left by the previous commit.

Three surviving mutants are accepted and left: the crosscheck's not-a-mapping branch is
unreachable from any fixture, the None -> "" normalisation only matters for an explicit
YAML null no record has, and `_frontmatter_block` returning "" instead of None is a
downstream no-op.

Verification: 432 scripts/tests pass; ruff at baseline parity (47, and `ruff format
--check` at parity 9/9); validator exits 0 with no drift notice; corpus at p90=60, 18/183,
calibrated.

Decisions-Edit: yes
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-04 23:07:15 +02:00
timothyandClaude Opus 5 57ad5efb3f fix(726): quote the decision record's rule: so PyYAML doesn't truncate it
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review-verdict/h10 Review-verdict: MERGEABLE @ 57ad5ef (base: main)
`PR Gates / Script tests (pytest)` went red on
test_frontmatter_reader_matches_pyyaml_on_every_real_record. The rule: value was
an unquoted YAML plain scalar containing " #350's exclusion", and an unquoted
" #" starts a YAML comment -- PyYAML truncated the whole rule at "(mirroring",
so the catalog row and the mirrored MemPalace drawer carried half a sentence.

The hand-rolled frontmatter reader used by scripts/decisions_validate.py does NOT
tokenize comments, so it read the full line and reported OK; only the script-tests
job, which cross-checks the two parsers against every real record, can see this
class of defect. That is exactly what it exists for.

Fixed by single-quoting the scalar (doubling the internal apostrophe in
"image''s") and dropping the possessive from "#350's exclusion" so the token is
plain "#350". Verified both ways: PyYAML now returns the full sentence ending
"...race ahead.", and reverting the quoting reproduces the red, so the fix is
what makes the test pass rather than the test being insensitive.

Follow-up commit rather than an amend -- 56afa4652 is already pushed.

Refs #726

Decisions-Edit: yes
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-04 22:59:10 +02:00
timothyandClaude Opus 5 0ff9671393 fix(688): pin the minority band's constants and inclusivity; two prose corrections
Review round 7. Its adjudication of the round-6 dispute went the branch's way — measured
at `f394d6ce`, the sha the record actually cites, the #620-era distribution is n=167,
min 2, median 26, p90 52. Round 6 had measured `fefd11dff` (p90 57), a different tree.
The number stays as written.

BLOCKING FINDING: the 2%/25% constants and their inclusive boundaries were not pinned at
all. Mutating 0.02 -> 0.03, 0.25 -> 0.30, or either `<=` to `<` passed all eight
calibration tests. Those are not free parameters — they ARE the documented CI-red
thresholds, so a silent shift would quietly falsify the 38/718 figures in
docs.corpus-size-signal and docs/ci-cd.md (a strict cap reds after 37 long additions, a
strict floor after 717 short ones).

test_the_minority_band_BOUNDARIES_are_exactly_where_documented pins all four. It uses
100-record fixtures so k over the ceiling IS k%, and both 2/100 and 25/100 are exactly
representable and compare equal to the constants — true boundary cases, not near-misses.
Verified by mutation: all four now fail it.

PROSE
- corpus-size-signal said what stays blocking is "what routine growth cannot break",
  immediately before explaining that 38 routine additions break it. Now "what no SINGLE
  ordinary addition can break", which is what is actually true.
- docs/ci-cd.md said the fine claim is "never asserted"; it is never asserted AGAINST THE
  LIVE CORPUS, and IS asserted on synthetic distributions the tests own. Corrected — the
  distinction is the whole design.

Correction to an earlier commit message in this branch (9d2b30dc3, already pushed, so
recorded here rather than rewritten): it said the cross-check was clean on "all 183 real
records". 183 is the active keyed-record count; the cross-check scans the record WINGS —
195 files at that commit, 190 of them carrying frontmatter. The check was clean; the
figure named the wrong population.

Verification: 432 scripts/tests pass; ruff at baseline parity (47); validator exits 0 with
no drift notice; corpus at p90=60, 18/183, calibrated; new record still 60 lines.

Decisions-Edit: yes
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-04 22:52:03 +02:00
timothyandClaude Opus 5 56afa4652d fix(726): let a lagging realtime input catch up so a sparse stream can't pin it
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-readrate throttles an INPUT and paces it off whichever of its streams is
furthest behind. An embedded bitmap subtitle (PGS/DVD) is read through the same
-i as the video -- SubtitleInputFile carries the video's path and ComplexFilter
resolves it to a stream specifier on that input, so CommandGenerator never emits
a second -i for it. Being sparse, that subtitle stream falls further behind every
second and drags video throughput down with it: measured 0.53x realtime against
the 1.0x a live client consumes at, which drains the client buffer until it
stalls. FFmpeg names the culprit itself at -loglevel warning:

  [sist#0:3/dvd_subtitle] Resumed reading at pts 10.400 with rate 6.000
                          after a lag of 0.922s   (then 1.24, 1.56, ... 3.80)

Add -readrate_catchup (6.0) to realtime video/audio inputs, capability-gated
through FFmpegKnownOption.HasOption exactly as -readrate_initial_burst is, so a
binary without it silently keeps today's behavior instead of failing to start.
The option first shipped in ffmpeg 8.0, which is NEWER than 7.1 -- hence runtime
detection rather than a version assumption. Still images and concat inputs are
excluded, mirroring #350.

Measured on prod (QSV, -threads 1, dvd_subtitle -> overlay), 45s steady-state
window after a 6s settle, replaying the captured production command line:

  baseline 1.05        0.533x  (x3 runs)
  + catchup 2.0        0.711x
  + catchup 6.0        1.067x  (x2 runs)
  + catchup 20.0       1.067x
  no subtitle overlay  1.067x  (control)

Baseline reproduces the reported 0.53x and the control the reported 1.07x, so
the harness is validated on both sides. Reproduces on software libx264 too
(0.533x -> 1.067x), as expected for an input-pacing option. Raising the base
-readrate is not an alternative and was measured: 2.0 -> 0.62x, 3.0 -> 0.80x,
4.0 -> 0.80x, 6.0 -> 0.89x -- it asymptotes below realtime because the rate
ceiling was never the binding constraint.

On #529 (readrate was incidentally bounding QSV hardware-frame allocation): the
20.0-vs-6.0 row is why 6.0 was chosen, NOT evidence about allocation -- it is a
steady-state throughput number, not a count of frames in flight. Nor is the bound
safe because read rate is allocation-irrelevant: #529 measured that it is not (at
extra_hw_frames=0, 1.05 without a burst exits 0 while 1.05+burst hits ENOMEM).
Read rate changes how fast frames enter the graph, not how deep its queues are,
and #529's failure only appeared with NO pool headroom. The 64-frame floor now
guarantees headroom, so the load-bearing measurement is row 5 of that truth
table -- no -readrate at all with 64 frames -> 14 segments, exit 0 -- and a 6x
ceiling is strictly less aggressive than no throttle. Reinforcing it,
-readrate_initial_burst 8 has read flat out at the start of every playout item
since #350, so an unbounded read here is not new. A 240s QSV soak at
QsvExtraHardwareFrames=64 across 60 segment boundaries corroborates: 1.043x
sustained, zero "Cannot allocate memory" / "Could not open encoder", RSS 166MB
vs 156MB at baseline -- corroborates rather than demonstrates, since it stayed
largely caught up.

Catchup does NOT subsume the #350 burst; measured time-to-first-segment:
-readrate alone 3.71s, +burst 0.72s, +catchup alone 3.65s, both 0.67s. They fix
orthogonal metrics.

The regression test is built on a BITMAP subtitle deliberately -- a text subtitle
is fetched by the libass filter outside the demuxer, so the same assertions would
pass vacuously while the bug is fully present. It asserts on the "[0:0][0:2]overlay"
label, which is the mechanism: subtitle stream 2 resolving onto the video's input.
Every new test was mutation-checked, each producing exactly its own expected red.

Fixes #726

Decisions-Edit: yes
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-04 22:50:09 +02:00
timothyandClaude Opus 5 2ff52d4236 fix(688): make the n oracle dynamic; correct a tense that asserted false history
Review round 6: one MERGEABLE with non-blocking prose, one NOT-MERGEABLE with a real
test defect. Both addressed.

THE n PIN DID NOT PIN ANYTHING. `assert n == 10` was checked against a fixture holding
exactly ten records, so a mutation returning a constant 10 for EVERY input satisfied it —
while changing the live denominator from 183 to 10, which is precisely the production
defect the test was added to close. A single hardcoded count cannot tell "counts the
input" from "returns this number". Now a dynamic oracle at two distinct cardinalities;
verified the constant-n mutation fails it.

"MOVED p90 by 21 lines" asserted a history I had not measured. 21 is TODAY's gap (60 ->
81). The actual #672 event was smaller — at that tree p90 was 60 with the next value 83,
so the 62-line record moved p90 to 62 and reddened CI with a 2-line move. The capability
claim is what matters and is true at both refs; the past tense was not. Changed to "can
move" in the two places that asserted it, which also makes all four sites agree with
docs/ci-cd.md and the validator docstring, both of which already said "could".

A REVIEW FINDING I REJECTED, having measured it. Round 6 called "p90 52" wrong for the
#620-era distribution, measuring 57. That measurement is at `fefd11dff`; the record cites
`f394d6ce`, and at THAT sha p90 is exactly 52 (n=167, min 2, median 26). The number is
correct as written and is unchanged. Recording the disagreement rather than silently
keeping it: the reviewer measured a different tree than the one the claim names.

Also corrected in this branch's own commit message trail: `b24c51ab5` said origin/main
has three 59-line records; it has four 59s and two 60s (HEAD: four and three). The claim
that survives, and the only one the code and docs now make, is that NOTHING sits between
61 and 80 at either ref — verified independently at both.

Cosmetics from the same round: a dangling modifier in ceiling_calibration's docstring, a
test_decisions_lib assertion message that said "field(s) differ" when faults can now also
be rejections, and a sentence in corpus-size-signal that named the replacement test
without saying what it asserts.

Verification: 431 scripts/tests pass; ruff at baseline parity (47); validator exits 0 with
no drift notice; corpus at p90=60, 18/183, calibrated.

Decisions-Edit: yes
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-04 22:35:00 +02:00
timothyandClaude Opus 5 b24c51ab51 fix(688): stop enumerating multiplicities, pin n and the keyless filter, de-couple the vacuity floors
Review round 5. One reviewer returned MERGEABLE with prose findings; the other found four
more, two of them real test gaps. Both are addressed here.

THE MULTIPLICITIES WERE WRONG AGAIN — fourth commit running. The "measured" sequence
59, 59, 60, 60 -> 81 is measured nowhere: origin/main has 59, 59, 59, 60, 60 and HEAD has
four 59s and three 60s. I had even tagged it `(measured)` in a canonical decision record.

So this stops enumerating them. All four sites now state only the load-bearing, stable
fact: the lengths climb to the ceiling and then jump STRAIGHT to 81 with nothing in
between, so one record moves p90 by 21 lines. The multiplicities change with every record
added; the gap is the point. This is the same "fix the boundary, not the site" move the
tests got three rounds ago, applied to prose that had failed four times.

TEST GAPS
- Deleting the over-tight test removed the only pin on CeilingCalibration.n: a mutation
  returning n=1 passed all 19 relevant tests while printing a wrong denominator in the
  drift notice. Pinned.
- The `if r.key` filter was load-bearing in production and unpinned: main() passes the
  UNFILTERED list (194 entries, 11 keyless, one a 106-line "Records formerly in this file"
  scaffolding block), while every test handed the function a pre-filtered list — oracle and
  production agreed only by accident. Pinned.
- The --record-ceiling 0 arm's claim that it "cannot go vacuous for any non-empty corpus"
  was FALSE: an empty record body is validator-valid and record_prose_lines returns 0, so a
  corpus of empty-bodied records has no offender at 0. Now -1, which makes the claim true.
- The three `len(recs) > 100` vacuity floors were themselves growth-coupled — 83 legitimate
  retirements would red them even with the ceiling still calibrated, which is the #688 class
  in the guard rather than the assertion. Lowered to >20 where a floor is meaningful, and to
  plain non-empty on the derived-ceiling test, whose derivations need nothing more.
- test_main_FEEDS_the_crosscheck now compares against `set(record_wing_files())` instead of
  a hardcoded basename, killing the same mutation with zero corpus dependence.

PROSE
- "ordinary growth cannot cross it — NOT immune" contradicted itself in four places. Now:
  no SINGLE ordinary addition can cross it; this is measured headroom, not immunity.
- "trimming or archiving 15" blurred two different denominators. Trimming leaves 3/183 =
  1.64%; archiving leaves 3/168 = 1.79% because the denominator moves too. Both verified,
  both under the floor, now stated separately.

Verification: 431 scripts/tests pass; ruff at baseline parity (47 — a 121-char docstring
line briefly took it to 48 and is rewrapped); validator exits 0 with no drift notice;
corpus at p90=60, 18/183, calibrated; record still 60 lines.

Decisions-Edit: yes
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-04 22:11:25 +02:00
timothyandClaude Opus 5 c56dfdd539 fix(688): delete the last over-tight test, pin the crosscheck's INPUT, fix 4 prose defects
Review round 4, both reviewers. Both report the code path SOUND and the #688 coupling
class analytically gone (rows proved, not merely observed green); one caught 28 of 30
mutations. What blocked was one over-tight test, two unpinned mutations, and prose —
including two defects the PREVIOUS commit introduced while claiming to fix numbers.

TESTS
- Deleted test_adding_ordinary_records_cannot_RED_the_blocking_property. It appended two
  long records to the LIVE corpus and asserted flags_minority on the RESULT, so it crossed
  the cap two records before production does (56/221 vs 54/219) — a test named "cannot RED
  the blocking property" being a tighter tripwire than the property. Fourth instance of the
  #688 defect in this change. Deleted rather than tuned: both its jobs are already covered
  off live data (the synthetic v4/v5 contrast, and the deliberate live guard at the
  production threshold).
- test_main_FEEDS_the_crosscheck_the_REAL_wing_files closes a mutation hole found by
  review: replacing `pyyaml_frontmatter_faults(record_wing_files())` with `...([])` in
  main() left the ENTIRE suite green. Both existing wiring tests monkeypatch the function,
  so they pinned that its RETURN reaches errs, never that its ARGUMENT is the corpus —
  the '#609 marker that printed OK while doing nothing' defect one level up, which is the
  exact thing the new record indicts. Verified: the mutation now fails this test.
- test_main_actually_REPORTS_... went vacuous whenever the ceiling legitimately goes green
  (`False is False` passes with the whole warning branch deleted). Added an arm at
  --record-ceiling 0, which no non-empty corpus can make vacuous.
- Pinned two surviving mutations: ceiling_calibration's n_over boundary (it recomputes the
  count, so oversized_records' exclusivity test does not cover it — `>` vs `>=` differs by
  the 3 records sitting exactly on the ceiling) and p95's quantile (the 95/5 fixture cannot
  tell 0.95 from 0.99).

PROSE — two of these were introduced by the previous commit, whose stated job was fixing
numbers. That is the pattern worth naming, not the individual typos.
- "so ONE new record could move p90 lines" — the previous commit deleted the magnitude and
  left the sentence ungrammatical. Now "by 21 lines".
- It also introduced a THIRD variant of the sequence it was correcting ("60, 60, 60") and
  missed a FOURTH site in ci-cd.md still saying "twenty lines". All four sites now read the
  measured 59, 59, 60, 60 -> 81, and 21 lines.
- 59- and 60-line records were described as "above the ceiling"; they are at or below it.
- "routine growth cannot cross it" overstated the bound: it is deliberately less sensitive,
  not immune. Reworded, and the THIRD and tightest arm is now documented wherever the other
  two appear: consolidating 15 of the 18 offenders drops below the 2% floor (verified:
  3/183 = 1.64%). That is in real tension with test_oversized_records_can_go_green and is
  stated as accepted — at 3/183 the constant genuinely is mis-calibrated — with the remedy
  named: a consolidation PR that large should re-derive the ceiling in the same change.
- Corrected a docstring that called the 999-ceiling failure "silently deleting the
  assertion"; it would go red, not silent.

Verification: 430 scripts/tests pass; ruff at baseline parity (47); validator exits 0 with
no drift notice; corpus at p90=60, 18/183, calibrated. The two new claims were measured,
not assumed: the empty-list mutation fails the new test, and 15 consolidations reaches
1.64%.

Decisions-Edit: yes
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-04 21:47:24 +02:00
timothyandClaude Opus 5 0db56c3ebd fix(688): remove the last live-corpus tripwires and three fabricated/wrong numbers
Review round 3, both reviewers, NOT-MERGEABLE. Nothing needed rework — the code path
was found sound and mutation-sensitive (a 17-mutation battery caught every mutation with
the semantically correct test). What was left were tripwires and prose.

TRIPWIRES
- `assert need > 20` was the tightest live-corpus assertion left in the blocking job:
  it reds after 16 over-ceiling additions, while `flags_minority` — the property #688
  exists to protect — survives to 36. An arbitrary threshold on a live order statistic is
  the ratchet wearing a different hat. Removed; the measured headroom lives in prose,
  where being out of date costs a doc fix rather than someone else's red build. This also
  removes an unbounded `while` loop that HUNG the suite rather than failing it when the
  ratio could not reach the cap.
- test_main_reports_ceiling_drift hardcoded ceiling 999, which is not guaranteed above
  p95: ten valid 1000-line records make 999 calibrated and silently delete the test's only
  assertion. Now derived as max+1, off the tail by definition.
- test_main_actually_REPORTS_the_ceiling_and_the_trend required >=1 over-ceiling record.
  The ceiling is ALLOWED to go green (test_oversized_records_can_go_green says so), so
  that would red the blocking job the day someone consolidates the last offender —
  punishing exactly the work the warning asks for. Restated as an IFF.
- test_no_budget_flag_means_no_retirement_warning asserted no bare "RETIRED" in stderr; a
  legitimate stale record whose TITLE contains the word reds it. Matched precisely now.
- Added the >100-record vacuity guard its siblings carry to the derived-ceiling test.

NUMBERS — all three were mine, and two are the failure mode this repo calls worse than
no note at all (a confident claim that was never measured):
- "the lengths above the ceiling ran 60, 61, 62, 63 then jumped to 81" is FABRICATED. No
  record of 61, 62 or 63 lines exists at origin/main, at the #672 sha, or at the #706 sha.
  Measured, the sequence is 59, 59, 60, 60 then 81 — a 21-line jump, so the conclusion was
  if anything understated. Corrected in all three places it was repeated, including the
  canonical v4 row of docs.corpus-size-signal.
- The crosscheck record called `decisions-guard` a REQUIRED check — introduced by the
  previous commit in the sentence rewritten to fix an overclaim. Verified against Gitea
  branch protection: `main` requires exactly `Build & test (.NET)`, `EF migration
  integrity` and `review-verdict/h10`. NEITHER script-tests NOR decisions-guard is
  required; the record now says so.
- docs.corpus-size-signal said 37 additions "to reach" the cap two paragraphs above 38
  "below the cap" — a same-document numeric inconsistency of exactly the class this change
  set out to remove. Both now state 38 to BREACH, noting 37 lands on 0.25 and passes.
- Also: the old bound's accepted range is 39..229 (not 43..229 — 43 is the NEW bound's
  lower edge); "95% over the ceiling" was 100%; `oversized_records` said the #620
  distribution began at 0 lines where the record itself says 2.

Verification: 428 scripts/tests pass; ruff at baseline parity (47); validator exits 0 with
no drift notice; corpus at p90=60, 18/183 over the ceiling, record trimmed to 60 lines so
main ships calibrated.

Decisions-Edit: yes
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-04 21:26:52 +02:00
timothyandClaude Opus 5 b3a8826281 fix(688): stop asserting live-corpus order statistics anywhere in the suite
Review round 2 (both reviewers, independently) found the round-1 fix incomplete: the
live-corpus coupling survived in two more tests. This is the THIRD instance of one
defect class in this change, so the fix is to remove the coupling rather than patch
another site.

BLOCKER — test_adding_ordinary_records still asserted live order statistics. The
`if before.marks_tail:` guard made the PRECONDITION conditional but left the
CONCLUSION (`assert not after.marks_tail`) an assertion about the live p90. Verified:
appending 16 ordinary 30-line records — nothing long, nothing unusual — makes both
sides true and fires it, reddening the blocking job for an unrelated author. Exactly
what #688 exists to abolish.

The v4-vs-v5 contrast moved to test_v4_would_have_reddened_where_v5_holds, built on a
distribution the test OWNS, reproducing the shape that matters (a sparse gap just above
the ceiling). The real-corpus test now asserts only the robust claims: the additions
were counted, v5 holds, and the measured headroom.

Same treatment for the "bad ceiling" teeth test, which hard-coded that 200/229/230 stay
rejected on the live corpus — three new 200+ line records flip it. Teeth now demonstrated
synthetically; the only live-corpus assertion left is that today's ceiling is accepted,
which needs 38 over-ceiling or 718 short additions to break.

The IFF drift test could lose its quiet branch: one 61-line record makes BOTH the 60 and
999 ceilings drift, at which point an UNCONDITIONAL notice would pass. Both ceilings are
now DERIVED — p90 itself (always calibrated, since p90 <= p90 <= p95) and max+1 (always
off the tail) — so each branch is guaranteed by construction, and the test asserts it
exercised both.

Added the missing regression test for the typed-mapping-key TypeError: removing `key=str`
now fails a test instead of only a manual probe.

Corrected against measurement: the v5 row of the record's own version table still stated
the REJECTED first-draft bound (`0 < f < 1/3`) — the canonical artefact contradicting both
the code and its own next paragraph; accepted range is 43..180, not "roughly 45..150";
breaching the cap takes 38 additions, not 37 (37 lands exactly on 0.25, which passes under
`<=`); "5x headroom below the floor" was inverted; ci-cd.md said four versions "all
ratcheted" when v1 was vacuous and v2 accepted an absurd ceiling; and the crosscheck record
overstated protection — script-tests is NOT a required check, so "no broken record has
reached main" is procedural, not structural.

Evidence the coupling is actually gone: mid-fix the corpus sat at marks_tail=False (an
edit pushed this branch's own record to 61 lines, moving p90) and the suite stayed fully
green. Under the old assertions that state reddened CI. The record is trimmed back to 60
so main ships calibrated and no drift notice nags.

Verification: 428 scripts/tests pass; ruff at baseline parity (47); validator exits 0 with
no drift notice; corpus at p90=60, 18/183 over the ceiling.

Decisions-Edit: yes
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-04 21:02:01 +02:00
timothyandClaude Opus 5 80818aa294 fix(674,688): address independent review — restore the coarse bound's teeth
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Two independent cold reviews (one cross-family) agreed on the top two findings.

1. The #688 fix was defeated by its own complement test. test_main_is_QUIET_about_
   drift asserted the drift notice was ABSENT while running main() over the LIVE
   corpus — whose failure condition is bit-for-bit v4's assertion, in the same
   blocking job, three functions down. p90 sat exactly on 60, so one over-ceiling
   record would have reddened it. Replaced with an IFF test that uses
   ceiling_calibration as its oracle, so it asserts the WIRING rather than the
   corpus's current state, plus a guard that at least one branch fires.

2. The coarse bound was nearly unfalsifiable. `0 < fraction_over < 1/3` accepted
   EVERY ceiling from 39 to 229 on the real corpus — including the ceiling of 200
   my own docstring offered as the case it catches, because one 230-line record
   keeps the count nonzero. That claim was simply false and is corrected. The floor
   is now a FRACTION (2%) and the cap 25%, which rejects 200/229/230 and 20, and
   accepts roughly 45..150. Headroom measured, not estimated: 37 consecutive
   over-ceiling additions, against ONE record to break v4.

3. yaml.safe_load raises a bare ValueError, not a YAMLError, on a well-shaped but
   impossible date (stale-after: 2026-06-31), which escaped as a traceback and
   killed the validator on any machine with PyYAML. The except is now deliberately
   broad, with a test.

4. PyYAML returns TYPED mapping keys, so a stray `1: x` made sorted(set|set) raise
   TypeError. Sorted with key=str.

5. The headroom prose was arithmetically wrong (~42/~40 where the real values are
   63/64; each addition moves numerator AND denominator) and the record counts were
   stale. Corrected against measurement.

6. test_adding_ordinary_records passed identically with its two additions removed.
   It now asserts the additions were counted, and that they break the v4 property
   while leaving v5 satisfied — guarded by `if`, never asserted, since whether v4
   currently holds is a fact about the live distribution and asserting it would
   rebuild the ratchet.

Also recorded honestly in docs.frontmatter-pyyaml-crosscheck: decisions-guard
installs no PyYAML, so in CI the cross-check always skips and script-tests already
caught both hazards — the CI delta is close to zero and the real fix is the local
loop plus the tool/suite agreement. And the new record was trimmed 64 -> 58 prose
lines: at 64 it moved p90 to 64 by itself, i.e. this PR would have reddened the old
blocking job. That is now cited in the test as the live demonstration.

Verification: 426 scripts/tests pass; ruff at baseline parity (47); validator exits
0; corpus back to p90=60, 18/183 over the ceiling, marks_tail and flags_minority
both true.

Decisions-Edit: yes
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-04 20:37:27 +02:00
timothyandClaude Opus 5 9d2b30dc3b fix(674,688): cross-check frontmatter against PyYAML; split the ceiling calibration claim
Two defects in scripts/decisions_validate.py, fixed together because they share the
validator and its pytest suite.

#674 — the validator reported OK on frontmatter PyYAML rejects. The hand-rolled reader
is deliberately dependency-free (decisions-guard and the Husky hooks install nothing),
so it cannot see a bare apostrophe closing a single-quoted scalar. Hit twice in one
session by two independent agents. `pyyaml_frontmatter_faults()` now cross-checks the
parse against PyYAML whenever PyYAML is importable, and is SKIPPED with a ::notice::
when it is not — the read path stays dependency-free.

The two known hazards fail differently and the fix covers both: the apostrophe makes
PyYAML reject the document, while an unquoted ` #` parses fine and silently TRUNCATES
the value. So the check compares parsed results key by key rather than try/except-ing
the load, which is also what makes it generalize past the two known characters. PyYAML
wrote these files, so on disagreement it is authoritative and the file is the defect.
The comparison has one implementation, called by the validator and by the existing
test_decisions_lib agreement test, so the tool and the suite cannot drift.

#688 — test_real_corpus_ceiling_sits_at_the_TAIL_BOUNDARY asserted p90 <= 60 <= p95 in
the BLOCKING script-tests job. p90 sat exactly on the ceiling and the distribution above
it is sparse, so one ordinary record moved p90 by twenty lines and reddened CI for
whoever wrote it; it reproduced twice live (#672, #706) and both times the only in-scope
remedy was trimming the new record to fit the constant.

v5 splits the claim by robustness instead of hunting for a better single assertion. The
blocking test now asserts only the coarse, non-ratcheting property (the ceiling flags a
nonempty proper minority, 0 < fraction_over < 1/3); the fine tail-boundary claim is
measured every run and REPORTED as a ::notice::, on the same reasoning stale_records
already uses — a constant going out of date is the passage of corpus growth, not a
defect in the commit under test. The fine property is still asserted, against synthetic
distributions the test owns. The ceiling stays 60.

Verification: 424 scripts/tests pass; ruff at baseline parity (47 before and after);
the cross-check is clean on all 183 real records; a positive control pins that
record_wing_faults alone still reports both hazard files as clean, so the new red cannot
pass for the wrong reason; and a test demonstrates that appending #672's 62-line and
#687's 107-line records to the real corpus does not red the blocking property.

Docs: new record docs.frontmatter-pyyaml-crosscheck, docs.corpus-size-signal updated for
the v5 split, catalog regenerated, docs/ci-cd.md updated for both.

fixes #674
fixes #688

Decisions-Edit: yes
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-04 20:15:16 +02:00