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54 Commits
Author SHA1 Message Date
timothyandClaude Fable 5.1 a9341d8415 fix(881): a GREEN claim is only readable if its proof REACHES the clause
Round three found the one half of the new mechanism with no relevance gate.
`verify_claim`'s GREEN path read exactly two things — the run exited 0, and
something PASSED — and both are satisfied by a proof that never touches the
mutated file at all. Reproduced before fixing: retargeting the shipped GREEN
entry's proof from `test_check_doc_narrative.py` to `test_bom_guard_detection.py`
changed nothing, and the entry still reported verified. The RED direction never
had this hole, because a proof that ignores the mutation stays green and is
refused as "the clause is not load-bearing".

So a GREEN entry now declares a `reach_replacement` and its `reach_expect`: a
SECOND mutation of the SAME clause, required to REDDEN the same proof, executed
through `verify_mutation` so its red is read through the diagnostic gate rather
than on exit status. The shipped entry declares `path = p` — dropping the `b/`
stripping every scanned diff header goes through — and the run then scans
NOTHING, which is what the declared diagnostic reads. The same retarget now
fails, naming the reach verdict.

The gate runs LAST of the three: run first it would refuse before the status and
vacuity gates were read and neither could be witnessed failing alone (#685), and
the sandbox is reset between a claim's two proof runs for the reason it is reset
between mutations. It has its own disarm proof, and the two synthetic claim
sandboxes are now real git repositories so `reset_sandbox` has a baseline;
`_lib_with` shares the baseline registry, since a copied module's own starts
empty.

Also from that round:

- The record no longer counts the mutation-outcome claims in the pinned
  proposal-3 scan. A third of the same shape sits in the same result set
  (`test_a_verdict_BEYOND_A_SHORT_PAGE_is_still_found`), and which side of the
  line a sentence falls on is a judgement, so an exact count is a figure the
  next reader re-derives differently — the failure this record is about.
- The calibration paragraph no longer restates the post-review-verdict outcome
  as a dated witnessing. It points at the `CLAIMS` entry that executes it, which
  is the form the rewritten shell comment beside it demands.
- The comment in `check-doc-narrative.py` claimed a universal ("reddens no
  test") while one file is executed. It now names that file, so the quote binds
  an outcome no wider than what is checked.
- Proposal 4 from the issue is dispositioned explicitly: rejected as a rule
  here, on the issue's own argument that an exhortation does not fire at the
  moment of least slack.
- `docs/README.md`'s task-signal parenthetical now names the `CLAIMS`
  population; the file was owned by another slot when this branch started.

Cost re-measured 2026-09-05, three baseline/branch pairs: the `CLAIMS` half adds
31.7-43.6%, up from the 12.7-16.6% measured before the gate existed. The old
figure is retired rather than scaled — growing the population invalidates the
measurement that described it.

Refs #881

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 05:02:46 +02:00
timothyandClaude Fable 5.1 1fc24e8cf6 fix(881): a mutation-outcome claim is executed wherever it is written, bound to the sentence that makes it
`testing.mutation-claims-are-executed` was the right rule scoped to its first
site: `mutation_manifest.py` declared itself "one per `MUTATION`-graded row of
`docs/guard-inventory.md`", so the same claim written in a code comment, a test
docstring or a decision record was outside it by construction. That is where all
four of ersatztv#812's consecutive review-round defects lived.

Extend the rule in place rather than adding a sibling record: a sibling would
recreate the exact shape (a rule per site class, with the next site class outside
both) that #773, #784 and #743 each are. The subject is unchanged; only the
population widens.

Mechanism: `CLAIMS` in `scripts/tests/mutation_manifest.py`, keyed on the PROSE.
Each entry carries the tracked `site` and the verbatim `quote`, checked every run,
so a reworded sentence reports as a retarget instead of drifting from the entry
that justifies it — this is proposal 2 (a quotation of another file is a claim
about that file) adopted where the referent is declared. Each entry also declares
RED or GREEN and is executed in the existing sandbox. GREEN is new: 47 of the 128
candidate lines the corpus grep returns at efadbec29 assert that a mutation is NOT
noticed, and no `MUTATION` row can express that, so the rule was unsatisfiable for
them. The green direction is read by two separate clauses (exited 0, and something
actually passed) so neither can mask the other, and each carries its own disarm
proof.

Proposal 3 (never anchor prose to a state your own commit moves) is rejected as a
DETECTOR and kept as a phrasing rule: measured 2026-09-04, the only plausible
pattern set for it matched 16 lines across the scanned corpus and every one was
legitimate rationale prose.

The seed set falsified a shipped claim on its first run: `post-review-verdict.sh`
asserted that disarming its array-TYPE read-back test left the suite green. It
does not — jq refuses to iterate a `null` `.statuses` and the script dies with the
parse message, reddening `test_a_readback_whose_statuses_array_is_NULL_is_refused`.
Comment corrected, entry graded RED.

fixes #881

Decisions-Edit: yes
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015QqCpYFsKgnAnx6jVwrKiV
2026-09-05 04:44:28 +02:00
8fd9eae0bf fix(891): a sourced path is code, so every hook resolves it from its own tree (#903)
Build ErsatzTV Image / CI toolchain image resolves (push) Successful in 12s
Build ErsatzTV Image / Delimiter ban (release path) (push) Successful in 30s
Build ErsatzTV Image / Build & test (.NET) (push) Successful in 9m6s
Build ErsatzTV Image / EF migration integrity (SQLite + MySql) (push) Successful in 6m12s
Build ErsatzTV Image / Functional E2E (curl + UI contracts) (push) Successful in 6m3s
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 4m10s
Every hook under `.claude/hooks/` assigned `ETV_HOOK_FIRE_LIB` from `${CLAUDE_PROJECT_DIR:-<self>}`
and then `. `-SOURCED it. Sourcing is execution, so a file of that name in an env-designated tree ran
as code inside the hook before stdin was read and before it could decide anything. Measured on the
merge gate before #858 fixed that one hook: a decoy tree's copy printed an `allow` and exited 0.

Reachable without an attacker, because husky is a different launcher: `.husky/pre-push` invokes
`./.claude/hooks/…` relative to the PUSHED tree, independent of the variable, so a push from one
worktree while the environment names another sources the other tree's code into a gate.

Sweeps the remaining twelve hooks together (population derived from `git ls-files`), reconciles the
second resolution inside `scripts/hook-fire-log.sh` itself, and requires the root to OWN the sink
(`-ef`, not `-e`). The static guard pins the preamble BYTE-FOR-BYTE — a withdrawal, after a lexical
rule was defeated by five successive shapes.

Also pins two arms of the checker that were unsubsumed AND unpinned: the begin call's presence and
its missing stdout-mode token. `…_LOSES_its_instrumentation_…` looked like their proof and was not —
it asserts only that the fault list is non-empty, and a stripped hook trips four arms, so deleting
either left the suite green.

fixes #891
refs #858, #859, #776

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01UYNbVwgVszv6Pum7ZuGd75
Co-authored-by: Timothy <timothy@noreply.gitea.tblindustries.be>
2026-08-30 21:41:19 +00:00
timothy dd0f75f1b6 fix(855): two glob dialects cannot be canonicalised into one, so model one shape and refuse the rest (#902)
Build ErsatzTV Image / CI toolchain image resolves (push) Successful in 9s
Build ErsatzTV Image / Delimiter ban (release path) (push) Successful in 26s
Build ErsatzTV Image / Build & test (.NET) (push) Successful in 8m46s
Build ErsatzTV Image / EF migration integrity (SQLite + MySql) (push) Successful in 6m4s
Build ErsatzTV Image / Functional E2E (curl + UI contracts) (push) Successful in 5m50s
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 4m16s
`ci-image.yml`'s `on.push.paths` decides which pushes to `main` publish a toolchain image;
`ci-image-pin`'s `git log` pathspec decides what the pin must name. #744 removed the shared
self-reference that kept them in step, leaving the agreement carried by three prose comments, and
divergence is silent and green in the dangerous direction.

The guard derives both lists from the workflow documents and compares them for set equality in both
directions. The comparison is deliberately narrow: it accepts a publish entry spelled exactly
`<dir>/**` against a pathspec entry spelled exactly `<dir>`, segments restricted to
`[A-Za-z0-9._-]`, and raises on every other spelling rather than deciding what that spelling would
have selected.

That narrowness is the substance. Measured against Gitea 1.27.1's own in-tree compiler
(`modules/actions/workflowpattern` -> `modules/glob.CompileWorkflow`) and real git: a bare
`docker/ci` in `paths:` compiles to an anchored `^docker/ci` and selects none of the directory's
contents while the git pathspec `docker/ci` selects all of them; `<file>/**` matches nothing while
the pathspec `<file>` tracks the file; a leading `/` is literal to Gitea while git refuses it
outright. A canonicaliser mapping the two dialects onto one string form was built twice and defeated
twice, each repair surfacing another spelling, so it was deleted rather than extended per
`testing.verification-code-needs-its-own-proof`.

The guard also asserts from the git index that each named path really is a directory, since
`<file>/**` and the pathspec `<file>` spell the same string; takes the pathspec from the `git log`
assignment rather than any `git log` in the job; refuses a `<<` token on a code line (a herestring
excluded) and a second bare `--`; and treats an absent and an empty `paths:` alike, because Gitea's
`Skip` returns false on an empty sequence, so `paths: []` filters nothing and every push publishes.

The docstring states the boundaries rather than implying coverage: the guard compares the pathspec
the pin job writes and does not establish that the staleness comparison consumes it, and a descendant
whose path below `<dir>` contains a newline is matched by the git pathspec but not by the publish
pattern.

Verified by nine independent cold-review rounds, none of which found a false green; the last fuzzed
27,720 publish/pathspec pairs against a port of the deployed compiler and real `git ls-files`.

fixes #855
2026-08-30 19:25:23 +00:00
timothyandClaude Opus 5 9da0020462 docs(887): sweep the withdrawal through the record — it still described the withdrawn pin
Build ErsatzTV Image / CI toolchain image resolves (pull_request) Successful in 10s
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PR Gates / CI image pin matches docker/ci (pull_request) Successful in 13s
review-verdict/h10 Review-verdict: MERGEABLE @ 9da0020 (base: main)
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Build ErsatzTV Image / Build & test (.NET) (pull_request) Successful in 9m53s
PR Gates / Script lint and tests (ruff + pytest) (pull_request) Successful in 19m17s
Build ErsatzTV Image / EF migration integrity (SQLite + MySql) (pull_request) Successful in 6m47s
Build ErsatzTV Image / Build & push image (amd64) (pull_request) Skipped
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Build ErsatzTV Image / Formatting (changed .cs conform to .editorconfig) (pull_request) Successful in 5s
Round 9 returned MERGEABLE with BLOCKER and HIGH empty. Every remaining item was a
sentence, and every one erred by UNDERSTATING the guard — which is the safe direction and
still worth fixing, because the decision record is what CLAUDE.md routes convention
lookups to.

The record's `rule:` still listed "`web/vite.config.ts`'s `test:` block" among the pinned
things — the very mechanism the previous commit withdrew — and named only `vitest.config.*`
as the outranking family, omitting `vite.config.js`/`.mjs`, which is the MEASURED attack
from round 7 (a `web/vite.config.js` ran the suite in the gitless stage with 1411 tests
green). That family went short in round 7 and again in round 8. This is
`enumerate-CLAUSES-to-close-a-sweep`: the survivors were phrased in a different category
(WHAT is pinned) from the retracted claim (HOW it is extracted), so sweeping for the
retracted words missed them.

Also: "any edit to this file reddens, including a comment" was an absolute and is
refutable — a reindent, added blank lines, tabs, and a form feed all stay green, because
`_normalise_lines` collapses whitespace. Restated as what is actually true (a line's TOKEN
sequence, a comment's words included) plus the reason the tolerance is currently inert:
this file has no template literal and no ASI-sensitive token outside a comment. And a YAML
single-quote escape had leaked from the frontmatter into the markdown BODY, where `''`
renders literally.

No code change; the guard is unchanged and still 73/0.

Refs: #887
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019T79beF1Ufid3dXju4yqkF
2026-08-30 17:14:22 +02:00
timothyandClaude Opus 5 58def5faa1 fix(887): withdraw partial matching too — web/vite.config.ts is pinned WHOLE
Round 8. Three consecutive rounds had each closed one SPELLING of the same marker match,
which is `every-blocker-was-one-mechanism-so-delete-it` at the count where it says
withdraw. Round 6 pinned a block; round 7 fixed `test:  {` (two spaces); round 8 defeated
the repaired matcher four more ways — `test : {`, `"test": {`, and the same two for
`plugins:` — plus two that never touched the marker at all:

    plugins: [react(), trackedSourceFilesPlugin()].concat([evil])
    test: { …pinned… },  ...moreTest

`defineConfig` is the identity function in BOTH vite and vitest (read from the installed
tree), so a spread AFTER the pinned span simply replaces what the pin matched. No
respelling of the marker could ever have caught those: the defect was partial matching,
not the pattern.

So the file is pinned whole. 48 lines, nothing generates it, no marker to respell and
nothing after the span. One assertion replaces a bracket walk, a block extractor and two
uniqueness assertions — and catches all seven measured routes. Stated cost, which is the
same one every other pin here carries: any edit to that file reddens, a comment included.

This also retires a claim I made in a commit message AND in the inventory row: that the
two pins "share one bracket walk and cannot drift apart again". It was false when
written — the block extractor had its own inline copy and never called the shared helper.
Verified by spying on the call: the `test:` pin made zero calls to it.

Also closed: the second exec-form branch in `copies_spa_source` was DEAD code (measured by
poisoning it with a `raise` — every test stayed green), since the round-7 reorder rewrites
`remainder` before it; the exec-form `--from` case that reorder was written for had no
STANDING test, only the development battery, and now has three; and
`OUTRANKING_CONFIG_PREFIXES` matched nested paths, so a `web/e2e/vite.config.ts` — and
`web/e2e/` is a real directory — would have reddened with a message asserting it outranks
the pinned config, which is false. Direct children of `web/` only.

Battery 68 -> 73, 0 missed.

Refs: #887
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019T79beF1Ufid3dXju4yqkF
2026-08-30 16:25:39 +02:00
timothyandClaude Opus 5 8141ac7807 fix(887): the rule applied to one config family and not its sibling
Round 7. BLOCKER empty; three real holes, two of them introduced by round six's own
fixes, which is this repo's recorded `each-fix-round-introduces-an-adjacent-defect`
happening inside a single commit.

**`web/vite.config.js` outranks the pinned `.ts` for `vite build`.** Read from the pinned
tarball rather than remembered: vite 8.1.3's `DEFAULT_CONFIG_FILES` is
`["vite.config.js", "vite.config.mjs", "vite.config.ts", …]`. So a `vite.config.js` whose
plugin shells out to the suite runs it in the gitless stage — measured with all 1411
tests green. The governing rule was already written down one family over ("pinning one
config is worthless while a second can outrank it") and had been applied to
`vitest.config.*` and not to this one. The refusal now covers both families.

**The decoy fix counted one SPELLING of the marker.** `text.count("test: {")` is defeated
by writing the real block `test:  {` with two spaces beside a decoy that matches exactly:
count is 1, the comparison takes the decoy, and the live block filters out precisely the
specs #883 broke on. Now `re.finditer(r"\btest:\s*\{")`.

**The plugin pin added in that same commit shipped the identical decoy hole** it was
written next door to fix — a raw `text.count(PINNED_VITE_PLUGINS) == 1` with a decoy
above `defineConfig`. Both `vite.config.ts` pins now share ONE bracket walk and ONE
whitespace-tolerant uniqueness rule, so they cannot drift apart again.

PROSE, and this one is a false completion claim in my own previous commit message: I said
the `PUBLISH_ACTION`/anti-vacuity sentence and the singular "only an `ENV`" residual were
corrected. They were — in the record and the inventory row, and NOT in the guard
docstring, which is the artifact a code reader hits first. Both are now fixed there too,
the route COUNT is removed from the docstring and the record and kept in ONE place, and
the residual that stated its own false version before retracting it now states the
boundary once.

Also: the `--from=` branch never reached the JSON exec-form parser, so
`COPY --from=web-build ["/source/web", "/dest"]` left the receiving stage unpinned; the
revalidate arm of the gating `if:` is now described as a DEPENDENCY on
`ci-detect-already-validated.sh` (graded `MUTATION: NONE`) rather than as something
asserted here, since only the `docs_only` arm is; and the plugin-bodies residual now says
there are TWO plugins, `react()`'s being third-party and unmitigated.

Battery 64 -> 68, 0 missed. One of those four exists because the battery itself briefly
reported NOTHING and exited 0 after a bad splice deleted its `main()` — it now carries an
anti-vacuity assert on its own mutant count.

Refs: #887
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019T79beF1Ufid3dXju4yqkF
2026-08-30 15:34:31 +02:00
timothyandClaude Opus 5 3ec73f3769 fix(887): a pin assumes it is pinning the thing that still DECIDES
Round 6 found three more false greens and named the class they share, which is worth
more than any of the three fixes:

  * `web/vitest.config.ts` OUTRANKS the pinned `vite.config.ts` — closed in the previous
    commit, found by probing vitest rather than reading about it.
  * A DECOY first `test: {` block. The comparison took `text.index("test: {")`, so a copy
    of the pin placed above `defineConfig` satisfied it while the real block was narrowed.
    Exactly one is now required — the same assertion this file already made about the
    gating step's NAME, for the same reason, not carried across.
  * A `needs:` edge matched by bare job id. `needs:` resolves within its own workflow, so
    a SECOND workflow publishing this Dockerfile while needing its own unrelated job
    called `test` satisfied it. Now bound to `GATING_WORKFLOW`. (The reviewer downgraded
    this to MEDIUM on measuring that `test_remote_state_inventory.py` forces a human to
    classify any new workflow — so the hole is "the guard is blind", not "silent". The
    forced review asks about remote state, not about whether the image is gated, so the
    one-line fix stands.)
  * A vite PLUGIN can shell out to the suite from `buildStart()`. The plugin ARRAY is
    pinned; the plugin BODIES are a stated residual, mitigated because
    `trackedSourceFilesPlugin` is deliberately lazy — a fact its own comment now marks as
    LOAD-BEARING for the image build rather than leaving as an optimisation note.

THE CLASS: **a pin assumes it is pinning the artifact that still decides.** Every route
found so far is authority moving where the pin is not looking — to another FILE, another
OCCURRENCE in the same file, another WORKFLOW, or a HOOK the pinned command invokes. That
question is now written down for the next person adding a pin, because a list of four
instances is not what generalises.

Prose, all refuted by execution: the residual naming the uncovered COPY shapes was wrong a
THIRD time at the same site (`/source/web /elsewhere` IS recognised — only the destination
is renamed — and the file's own test 700 lines below said so); "only an `ENV` is
unmodelled" was an absolute and is now a list; "Reach: N mutants, 0 missed" is restated as
a DEVELOPMENT BATTERY, since it is not in the repo, nothing re-derives it, and an
independent battery found misses against an earlier head; and `PUBLISH_ACTION` was claimed
covered by anti-vacuity, which proves the selector is non-empty and cannot prove it
complete.

Battery 61 -> 64, 0 missed.

Refs: #887
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019T79beF1Ufid3dXju4yqkF
2026-08-30 14:07:47 +02:00
timothyandClaude Opus 5 848216e277 fix(887): a second config file outranks the pinned one — found by probing vitest itself
Pinning `web/vite.config.ts`'s `test:` block is worthless while a file that takes
precedence over it can simply be added. Vitest resolves `vitest.config.*` (and
`vitest.workspace.*` / `vitest.projects.*`) BEFORE `vite.config.*`.

MEASURED, not read: dropping a `web/vitest.config.ts` carrying
`include: ['nope/**'], passWithNoTests: true` beside the pinned file made `npx vitest run`
report "No test files found, exiting with code 0". The gating step would be green having
run NOTHING — worse than the filtered run ersatztv#887 removed, because a filtered suite
at least reports on what it ran.

The construct is refused rather than modelled: no such file exists, so the guard asserts
none appears. Its population is the git INDEX, which is right and worth stating — an
untracked config does not exist in a CI checkout either, so the mutant proving this has
to STAGE the file. It failed to redden until it did, which is the correct behaviour
demonstrating itself.

Route count five -> six -> seven -> eight, wrong at every previous count, so it stays a
running total with its history attached. Battery 60 -> 61, 0 missed.

Refs: #887
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019T79beF1Ufid3dXju4yqkF
2026-08-30 13:37:59 +02:00
timothyandClaude Opus 5 9b99a23835 fix(887): a selector where a pin was available — the blocker round 5 measured
Round 5 found a BLOCKER, and it is the sharpest kind: I made the exact mistake I had
described one screen earlier. `test_only_the_PINNED_npm_SCRIPTS_run_vitest` SELECTED the
scripts to pin by asking whether their body contained the literal `vitest` — a selector,
the category this file calls the worst-behaved because going short is silent — and then
its docstring claimed "going short is caught by the equality below", which is false: a
script the substring misses is absent from the compared map, so the equality still holds.

Four one-line `web/package.json` edits, none of which spells `vitest`, each put the suite
back into the gitless stage with the whole guard green: `"build": "npm run test -- --run
&& …"`, the same via `npm t`, and the `prebuild` / `preinstall` LIFECYCLE HOOKS, which
npm runs for `npm run build` and `npm ci` without anything naming them. That is #883
verbatim, through the route round 4 identified and the previous commit reported closed.

The fix is the one the file's own vocabulary prescribes: pin the WHOLE script map. A
script that does not exist cannot be a lifecycle hook, and one that changes is not equal.
The category disappears rather than being widened by two entries.

ALSO CLOSED, all measured:
  * `web/vite.config.ts`'s `test:` block is now pinned. `npm test -- --run` collects what
    that file says, so `test.exclude` is where a filter would now naturally be written —
    it is the only place left after this change removed the Dockerfile's. Three mutants
    narrowed the gating suite through it with the step's own command unchanged.
  * A step-level `shell:` and a job-level `defaults:` each override the pinned workflow
    default. Both forbidden.
  * `test_no_run_BODY_builds_or_pushes_an_image` is RESTORED — I dropped it in the parser
    withdrawal, and a job publishing via `run: docker build … && docker push …` was then
    outside the action-derived population with anti-vacuity none the wiser.
  * A leading-slash context copy (`COPY /web/. ./web/`) was not recognised.
  * The sweep gains `yarn test`, `pnpm test`, `bun test`.

The residual naming the uncovered COPY shapes was wrong for the SECOND consecutive round —
it named `COPY --from=X /source/web /elsewhere`, which is covered (only the destination is
renamed). The real gaps are an ANCESTOR source (`/source` brings `/source/web` along) and
`/source/.`. Both measured.

Route count: five, then six, now seven. It has been wrong at every count, so it is now
stated as a running total with that history attached rather than as an enumeration.

Battery 51 -> 60, 0 missed.

Refs: #887
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019T79beF1Ufid3dXju4yqkF
2026-08-30 13:37:59 +02:00
timothyandClaude Opus 5 3a88f5dc3d fix(887): six meaning-change routes, not five — counted by checking rather than asserting
The previous commit said "five such routes" in three places. Checking rather than
restating found six, and the sixth is one this guard must NOT close itself: the gating
job runs in a `container:`, whose image decides which `npm` exists at all. That is
already pinned by `test_ci_image_pin_population.py`, so it is CITED — two guards on one
condition mask each other (ersatztv#685), and the way to find that out is to delete one
and look for a red, which nobody does.

Also measured rather than assumed: an INDIRECT script chain (`"test": "npm run inner"`
with `inner` running vitest) needs no clause of its own. The set-equality against
`PINNED_VITEST_SCRIPTS` reddens on it, because `inner` mentions vitest and `test` no
longer does — verified across four scenarios, three red and one green.

An enumeration is a claim like any other. This one was written from memory of what had
been fixed rather than from the code, and it was short by one.

Refs: #887
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019T79beF1Ufid3dXju4yqkF
2026-08-30 13:37:59 +02:00
timothyandClaude Opus 5 566cabea6d fix(887): the pin's real limit, measured — and three absolutes it does not support
A fourth cold review attacked the pin itself. BLOCKER empty, the mechanism upheld, and
every finding was prose claiming more than I had measured — plus one one-token gap that
was live.

THE ABSOLUTES, refuted by execution and now corrected in all three places they appeared
(guard docstring, `docs/guard-inventory.md`, the decision record's `rule:`):

  * "A pin cannot produce a false green." True only in the trivial reading. A pin is
    immune to a different SPELLING of the command — the entire class that defeated the
    parser nine times — and is NOT immune to the same text MEANING something else. Two
    mutants re-armed ersatztv#887 through `web/package.json` alone: `RUN npm run build`
    executes whatever that file says, so `"build": "vitest run && …"` puts the suite back
    into the gitless stage with every pin still matching, and `"prepare"` does it via
    `npm ci`. Now pinned: exactly one script may mention vitest, and its body is fixed.
  * Residual (1), "a stage that does not carry the SPA source is unpinned — correct,
    since without `web/` there is no suite there". False. The boundary is what
    `copies_spa_source` RECOGNISES, which is narrower than "has the suite available".
    Restated, with the case still outside it named: a stage copy that RENAMES the tree.
  * The substring sweep's "never a false green". Its reported failures are false reds;
    what it fails to REPORT is not. `SUITE_MENTIONS` is a hand-written SELECTOR — a third
    category beside population and pin, and the worst-behaved, because a population going
    short is caught by an equality and a stale pin reddens loudly, while a selector going
    short is silent. It was short by exactly one entry: `npm t`, npm's own alias, which
    this guard already names among the spellings that defeated the parser. A stage
    running `npm t -- --run` escaped it. Fixed, and the category is now named.

ALSO CLOSED: `run: |` -> `run: >` folded the two-line body into one command whose
whitespace-normalised text was byte-identical to the pin, so the marker script swallowed
the suite as its arguments — the body is now compared LINE BY LINE, since a newline
separates two commands. A SECOND step named `Test SPA` inherited the exemption both the
pin lookup and the sweep key on; exactly one is now required. And `COPY web*/` — a glob
that matches `web/` — was read as not carrying the source, leaving the receiving stage
unpinned.

Battery 45 -> 51, 0 missed. The remaining meaning-change route, an `ENV` rewriting `PATH`
so a pinned `RUN` resolves a different `npm`, is not modelled and is recorded as a
residual rather than implied away.

Refs: #887
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019T79beF1Ufid3dXju4yqkF
2026-08-30 13:37:58 +02:00
timothyandClaude Opus 5 b53c3bab47 fix(887): close what a pin cannot see — meaning changed without changing the text
A pin rejects any command it does not equal, so the remaining attack is to change what
the pinned text MEANS. Four such vectors, found by attacking the new mechanism rather
than reading it; the first was MEASURED escaping and the rest are the same class:

  * A NEW stage taking the SPA source across with `COPY --from=web-build /source/web`
    and running the suite there. `copies_spa_source` excluded every `--from=` copy on the
    grounds that a stage copy is not a context copy — true, but it can still carry the
    SOURCE TREE from a stage that has it. The receiving stage was therefore unpinned and
    unchecked, which is exactly the false-NEGATIVE direction this file's own residual
    warns about. A stage copy now counts when its SOURCE has a whole `web` path segment,
    which keeps the built-artifact copy this repo actually makes
    (`/source/ErsatzTV/wwwroot/app/.`) correctly out.
  * `working-directory:` moved off `web` — `npm test` somewhere else runs a different
    package, or none, with the pinned command text unchanged. Now pinned.
  * `defaults.run.shell` changed from `bash` to `sh`. `bash` here is `bash -e`, which is
    what makes a failing command fail the step; changing it changes whether a red suite
    blocks the image without touching the step at all. Now pinned.
  * A `SHELL` instruction in a pinned stage, which redefines what every later `RUN`
    executes. Refused outright rather than modelled — there is none in this repo, so the
    honest move is to reject the construct, not to reason about a replacement
    interpreter.

Battery 41 -> 45, 0 missed; the stage-copy mutant reddens three assertions. The residual
list gains the two cases that remain in this class and are NOT covered: a stage copy that
RENAMES the tree on the way in (no `web` segment in its source), and an `ENV` altering
`PATH` so a pinned `RUN` resolves a different `npm`. Naming them is the point — the
previous rounds' residual lists read as exhaustive while omitting the largest holes.

Refs: #887
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019T79beF1Ufid3dXju4yqkF
2026-08-30 13:37:58 +02:00
timothyandClaude Opus 5 376aad6774 fix(887): withdraw the command parser — pin the command TEXT instead
Round 4, and the third cold review found the same mechanism failing again, so it is
removed rather than patched a tenth time.

WHAT KEPT BREAKING. Three versions of this guard asked "does this command RUN the suite,
and can its failure be swallowed?" of arbitrary shell text. That predicate was wrong NINE
times across three review rounds, and twice a clause added to remove a FALSE RED opened a
FALSE GREEN on the guard's headline assertion:

  * heredoc bodies were skipped as data, but BuildKit EXECUTES `RUN <<EOF` — and the
    opener regex also fired inside quotes (`echo "tags<<__EOT__"`), which blinded the
    whole-file scan over the last 303 lines of docker-build.yml. Wrong in both directions
    at once, and measurably live on this tree.
  * `shlex.shlex` does not clear `commenters` the way `shlex.split` does, so `#`
    truncated a command mid-word — including the live `${#reports[@]}` idiom — and made
    this file's own stated residual false.
  * compound punctuation (`);`) welded two commands into one segment.
  * `npm t`, `./node_modules/.bin/vitest`, `pnpm vitest`, `yarn vitest`,
    `node …/vitest.mjs`, `timeout …`, `su -c …`, `if npm test; then` — all invisible.
  * `true || npm test` counted as the gating run while never executing it.
  * `continue-on-error: ${{ … }}` passed a check written against two literals — a
    presence test that cannot see polarity, fail-OPEN in the one direction that matters.

WHAT REPLACES IT. Nothing in the file decides what a command means any more. The commands
that may run in the two risky places are PINNED as text: the `RUN` lines of every
SPA-carrying Dockerfile stage, and the gating step's `run:` body and `if:`. A suite run
re-added in ANY spelling is simply not equal to its pin — the pin does not have to
recognise a spelling in order to reject it. A pin cannot produce a false green, only a
false red, and a false red is a human reading a diff they should have read anyway.

The population/pin split is the load-bearing distinction, and it is now stated in the
inventory: a POPULATION decides what is CHECKED, so a hand-written one goes silently
short; a PIN decides what is EXPECTED, so a stale one goes loudly red. Only the second is
safe to write by hand. Populations stay derived from the git index.

Two premises that were prose are now assertions: the publish step keeps its own
`docs_only` gate (without it, a docs-only push skips the suite and publishes anyway), and
no step other than the pinned one mentions the suite — a SUBSTRING sweep, deliberately
not a predicate, whose failure mode is a false red asking someone to look.

41 mutants, 0 missed, including all nine spellings above and the three from the previous
round. Exactly ONE is declared in `mutation_manifest.py` and re-executed every suite; the
other 40 were witnessed during development and are NOT standing — stated in the row
rather than left to be assumed.

Also fixed: the truncated sentence the round-2 rewrite left in the Dockerfile comment,
and the `web/src/api/*.guard.test.ts` glob, which over-claimed — it matches three files
and only two of them need git.

Refs: #887
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019T79beF1Ufid3dXju4yqkF
2026-08-30 13:37:58 +02:00
timothyandClaude Opus 5 090a29db3d fix(887): two defects the FIX introduced, found by attacking it rather than reading it
Both were measured, not reasoned, and both are the shape this repo keeps recording — the
fix round introducing an adjacent defect, and a unit test using a simpler input shape
than the real file has.

`npm test -- --run && echo ok || true` reported NO suppression. `&&`/`||` chain across a
whole list, so when the suite fails the `&&` right-hand side is skipped and the `||`
right-hand side runs: the list exits 0 and the suite's failure is swallowed even though
the `||` is not adjacent to it. The detector looked only at the separator IMMEDIATELY
after the suite segment. It is now scoped to the `;`-delimited list, which also catches a
backgrounded `npm test &` (status never awaited) and `( npm test ) || true`. A `;` ends
the list and resets, so `npm test; other || true` stays clean — that `||` is about the
other command.

`--exclude 2 > log` reported `['--exclude']`, losing the filter's own value: stripping
redirections as a PRE-PASS let the file-descriptor rule claim the `2` before the flag
could. Redirections are now consumed inside the walk, after flag values are taken.

The mutant battery grew from 17 to 24 and is 0-missed. The `docs/guard-inventory.md` row
now states the count and, explicitly, the grading: exactly ONE of the 24 is declared in
`mutation_manifest.py` and re-executed every suite; the other 23 were witnessed by hand
and are NOT standing. That is the same footing `pageSizeCallSites.guard.test.ts` states
for its nine, and saying so is the difference between evidence for the reach and a claim
of a per-run proof.

Refs: #887
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019T79beF1Ufid3dXju4yqkF
2026-08-30 13:37:58 +02:00
timothyandClaude Opus 5 a4df8f7958 fix(887): the gate must be REAL, not merely present — two cold reviews' findings
Both independent reviews (Codex GPT-5.6 cross-family, and a cold Opus agent in an
isolated worktree) returned BLOCKED. Both independently confirmed the CI path itself is
sound — neither found a route that publishes an image on which the suite never ran — so
every finding is about the guard's reach, plus one factual error in the prose.

THE STRUCTURAL ONE. The guard asserted a `needs:` edge EXISTS, never that it is load
bearing. Since this change deletes the in-image run, that edge is the only remaining
layer, so `continue-on-error: true`, `if: false`, a job-level `if:`, `npm test … || true`,
a pipe into `tee`, and `set +e` each certified a publish over a red suite with every
assertion green. `test_the_gating_suite_run_is_NOT_ADVISORY` closes all six.

A filter written into `web/package.json`'s script body was invisible at the call site:
`"test": "vitest --exclude x"` with a workflow saying `npm test -- --run` is a filtered
gating run reading as clean — the removed defect, one level down. `vitest_scripts()` now
derives each script's own narrowing arguments and `suite_args` prepends them.

PARSER REACH, every case measured rather than argued. `shlex.split` yields `lint&&npm` as
one token, so unspaced `&&` and `;` re-adds were invisible; `shlex` in punctuation_chars
mode splits them. Added: `sh -c` payload expansion, `npm --prefix`/`npx -p` flag skipping,
`xargs`, heredoc bodies as DATA (a `cat > f <<'EOF' … npm test … EOF` block counted as a
real run), `ADD`/JSON-form/no-trailing-slash `COPY` in `carries_spa_source`, and
redirections no longer read as spec filters. `--root` and `--config` moved to the
narrowing set: both change which specs vitest collects.

A FACTUAL ERROR, in five places including the mutation `expect`: "the build context is
`web/` + `design-system/`, so there is no `.git`". The context is the repository root
(`context: .`) and `.dockerignore` does not exclude `.git`. The true statement is about
the STAGE, which copies only those two directories. The conclusion survives — bookworm
slim has no git binary either — but a reader who checked would have found `.git` in the
context and concluded the note was stale.

ONE FINDING WAS MINE, from the mutant battery rather than from either review, and it is
the reason the battery exists: `failure_suppressions` tokenised the whole multi-line
`run:` body at once. A newline is not a shell separator, so a realistic two-line step —
the `ci-step-ran.sh` marker line, then the suite — merged into ONE segment whose head was
the marker script, and three suppression mutants passed while my single-line unit test
was green. It now works per logical line, and the regression test uses the two-line shape.

17 mutants, 0 missed, each caught by the intended assertion; baseline green. The
`docs/guard-inventory.md` residual list is rewritten as MEASURED reach — the previous one
was wrong rather than merely short, which cold review rightly called worse than silence.

Refs: #887
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019T79beF1Ufid3dXju4yqkF
2026-08-30 13:37:58 +02:00
timothyandClaude Opus 5 febaad77d7 fix(887): the image build builds the SPA and does not test it
`docker/Dockerfile`'s web-build stage is gitless twice over — the build context is
`web/` + `design-system/` so there is no `.git`, and `node:22-bookworm-slim` ships no
git binary. Members of the SPA suite need one or the other, so running the suite there
required naming the ones that cannot run. That list was a population nothing derived:
#883 added a third member without updating the hand-written pair of `--exclude`s, and
because `Build & push image (amd64)` is `if: github.event_name != 'pull_request'` the
resulting red was unreachable on a PR. It landed on `main` and on the `v*` tag path
instead — every image build failed, `:latest` stopped being republished, and a release
cut would have failed at the image build.

Adding a third `--exclude` re-arms the trap, so the list is removed rather than
extended: the stage now lints, typechecks and BUILDS the SPA, and the suite runs once,
unfiltered, in `docker-build.yml`'s `test` job on a real checkout. `build` carries
`needs: [test, migrations, scan]`, so no image is published past a red suite.

`scripts/tests/test_image_build_delegates_the_spa_suite.py` holds both halves — the
negative one alone would be satisfied by deleting the `needs:` edge. Three populations,
all derived: tracked Dockerfiles and workflows from the git index, and which npm scripts
ARE the suite from `web/package.json` (so `test` is in and the Playwright `test:ui-e2e`
is out, with no exemption list). Publishing jobs come from the `docker/build-push-action`
step and the Dockerfile each builds from that step's own `file:` input, which is why
`ci-image.yml` is out of scope by derivation rather than by an entry that would outlive
its reason.

Four mutants witnessed red, each by the intended test: a filtered suite run put back
into the Dockerfile, the `needs:` edge deleted, and the gating run narrowed in both the
block and the single-line `run:` step forms.

Refs: #887
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019T79beF1Ufid3dXju4yqkF
2026-08-30 13:37:58 +02:00
timothyandClaude Opus 5 bbaf1d76f8 fix(849): round 5+6 — the survivors a mutation SWEEP found, and the six that cannot be reached
Codex was unavailable for this round (usage quota), so the cross-family reviewer was
replaced by a same-family agent doing one mechanical job: enumerate every security-bearing
clause the diff adds, disarm each, and run the WHOLE suite per mutant. 60 mutants, 40 red,
20 survivors — a yield no per-finding review in this series came close to, because a review
looks at what the diff says it does and a sweep looks at what the tests actually pin.

## Proved (nine)

- the description type test in the RECONCILIATION `buried` filter — exact twin of the
  post-write one, which had a proof; without it a numeric description hard-errors
  `startswith`, the count comes back unusable, and the genuine verdict on the next row is
  lost with it;
- the `.status` / `.description` / `.id` type tests, parametrised over all four consumed
  fields so a fifth cannot be added without a case (`.creator`'s was the only one proved);
- both retry loops — the combined read and `repair_status_to`'s second POST. Against a stub
  that fails EVERY attempt a retrying reader and a one-shot reader are indistinguishable,
  which is how a retry ships unexercised; the fixtures now fail only the first attempt;
- the mid-run guard's self-exemption, which is what stops a sentinel-writing run abstaining
  on the row it was about to replace with an equivalent one;
- both repair-write failure paths (the repair and the post-POST replacement), reachable only
  with a stub that lets the FIRST post through and fails the rest — with every post failing
  the job dies on its own classification write and never reaches them;
- the two `state=pending` updates after a repair. The first is load-bearing beyond tidiness:
  without it a repaired head re-enters the post-POST check and, on a retarget it then
  observes, replaces `$REPAIR_DESC` with the weaker reconcilable sentinel — the same ordering
  inversion the floor beside it exists to prevent, reached by another route.

## Declared unreachable (six), enumerated rather than counted

The path-predicate failure branch; the empty-`row` refusal; page 2's non-numeric length; the
`$witness` normalisation; and the two unusable-count arms. Each is defence in depth behind a
filter that makes its input well-formed for every case a fixture can pose — the same standing
exception the post-write unusable-count arm already carried.

That set has gone two -> five -> six across three rounds as the sweep widened. Naming them is
the point: an inventory that undercounts reads as a checked claim and talks the next reader
out of verifying, which is the same defect as inventing coverage — and this branch has
already had to correct that twice.

refs #849
Decisions-Edit: yes

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019T79beF1Ufid3dXju4yqkF
2026-08-30 05:13:29 +02:00
timothyandClaude Opus 5 28e82fcb59 fix(849): round 4 — a regression round 3 introduced, and the clauses it left unproven
A third cold review, which ran the mutants itself, found one measured direction regression
against `origin/main`, one ordering inversion, and four clauses this branch claims as
fixes that survived mutation of their own text.

## The regression

Round 3 type-tested the four consumed fields of the existing `h10` row and resolved a
failure to `""`. For `.creator` that means "no creator" — unattributable — which is a
LICENCE TO RE-DERIVE. Measured, same fixture, both bodies: a head carrying
`h10=failure` with `"creator": 7` posts `Exempt: docs-only change` here and posted NOTHING
on `main`, which died on `.creator.login` before any write. Fail-closed became fail-open.

The rationale that produced it came from #763, whose site is the POST-WRITE filter: there,
dying leaves a green already published, so dropping the row is the safe direction. Here the
alternative is dying BEFORE any write. The deferral rationale did not transfer — which is
the shape this repo has a record for.

A wrong TYPE is now distinguished from a legitimately ABSENT value: `null` is the machine
creator, an unset description and every field of the `{}` no-verdict row; anything else is
unknown state and takes the route an unreadable ELEMENT already took.

## The ordering inversion

`mark_declined_row_if_any` was scoped to "the head carries any row", so it fired on a head
carrying `$REPAIR_DESC` and replaced the human-only marker with the machine-clearable one —
inverting the ordering the SAME commit added a floor to protect at the repair site. One
mechanism, three writers, and only two had the rule.

It also buried a verdict an ALLOW-LISTED reviewer wrote for another base. "Declined" is
decided against this event's `$BASE_REF`, so such a row is still the right answer for the
base it names and the successor run for that base short-circuits on it; burying it costs a
manual re-post on an ordinary retarget-onto-the-reviewed-base flow. Membership is tested on
the raw creator, not on `ex_human`, which the base check has already cleared — the question
is who wrote the row, not whether it governs this diff.

## The unproven clauses

Four claims survived mutation, including the headline one. The witness fixture had been
designed AROUND its own discriminator — its comment said a seed with an unrelated id "would
make this run carry the sentinel forward … and the guard under test would never be reached",
which is a description of the test not reaching it. Eleven proofs added, covering the
witness-by-id, the head arm's own call site (two callers of one helper, one fixture), the
mark helper's result propagation, and the round-4 behaviour above.

`raced_why`'s human value is a named constant now: it is the one such value that is also a
PREDICATE, compared twice, and a drift in either copy silently downgrades the human
`::error::` — the only message that tells a reviewer their verdict was buried.

## Docs

The renamed sentinel literal in two places; three documents still asserting the fence
"writes NOTHING"; the record's `mechanics:` still describing round 2's witness; the
replacement-site list, which had grown by four; a residual pointing "below" at something
above it; and `CLAUDE.md`'s "closed", which is stronger than the record it points at — that
record lists six residuals including both endpoints failing at once. The proof inventory is
stated as an invariant (every clause with a predecessor is mutated back to it) rather than a
count that rots.

refs #849
Decisions-Edit: yes

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019T79beF1Ufid3dXju4yqkF
2026-08-30 05:13:28 +02:00
timothyandClaude Opus 5 168fe21088 fix(849): round 3 — replace every unknown state, and prove the clauses that claim to
Two more cold reviews — cross-family (Codex/GPT-5.6) and a cold Claude reviewer that ran
the mutants itself — converged on two separate things: a remaining class of paths that
still left an unknown state standing, and, more importantly, that several clauses this
branch claimed as fixes SURVIVED mutation of the exact text they name.

## Behaviour

1. The reconciliation witness matches the CURRENT row's `id`, not merely a row with the
   sentinel's description. Description alone is satisfied by an OLDER identical sentinel —
   which is what a fixed point produces — so a read carrying only the earlier row cleared
   the sentinel while the verdict buried under the current one ended up below the fresh
   mark. Falls back to the description where the server omits `id`.
2. The two OBSERVED-mutation arms mark a head that carries a row this run declined, instead
   of only abstaining. They are still right not to post their CLASSIFICATION — computed
   against a base or head the PR may no longer have — but a declined row must not stay
   authoritative for the whole window until a successor finishes, and for a PR's FIRST push
   no successor is queued at all. Scoped to `pre_state` being non-empty, so the common path
   stays quiet.
3. `replace_unknown_state` RETURNS a status. Its first version ended the failure arm with a
   successful `echo`, so it reported 0 after both POSTs failed and the fence caller's
   `exit 0` reported an abstention that had not happened.
4. An `id` difference counts only when BOTH reads supplied one. A response that omits `id`
   beside one that includes it otherwise reads as a replacement, and this guard's reaction
   is to abstain — over a row the classification had already declined.
5. Every element and every consumed field of the combined response is type-checked before
   extraction, and a schema failure routes to the replacement. `.statuses` being an array
   was checked; its ELEMENTS were not, so one scalar made `select(.context == $c)`
   hard-error and `set -e` took the step down before any path could mark the head.
6. The path-predicate failure replaces rather than merely exiting, for the same reason.
7. `$UNVERIFIED_DESC` says "Status write", not "Exemption write". It is now written on paths
   that grant no exemption at all, and it is the operator-facing text of a required check.
8. The no-op-repair skip keeps the human `::error::`. Skipping the WRITE is right — the head
   already carries the strongest marker — but that message is the only place a reviewer is
   told their verdict was buried. `raced_why` is a sentence now, not the token `human`.

## Proof

The cold reviewer measured three of the six round-2 claims surviving mutation of their own
clause, one against the verbatim predecessor from the previous commit. Nine proofs added:
the no-mark downgrade's SCOPE (not just the description it writes), the page-2 refusals, the
untrusted-fence write, the row-`id` comparison, the repair floor, the no-op skip, both `$own`
exclusions, the write-result return, and the both-ids-present rule.

Two of those needed the test double to grow: the combined-status stub emitted no `id` at
all, so the `ex_id` clause had never once run with a non-empty value; and POSTs always
succeeded, so both write helpers' failure arms were unreachable.

The `$own` exclusions and the no-op skip are OUTCOME-redundant — mutating either alone leaves
the post sequence unchanged, which is how duplicate guards hide each other. Their proofs
assert the LOG, because what the exclusions alone decide is whether the job reports a race
against its own row. One clause is left deliberately unproven and named as such in the record
and the guard inventory rather than counted: the path-predicate failure branch has no fixture
that can reach it.

## Also

Round 2 left two comment paragraphs duplicated verbatim and a block header narrower than its
block; both fixed. Stale prose corrected in the workflow ("dies WITHOUT posting", "post-write
verification never runs for it", "this block only runs after a `success`"), `docs/ci-cd.md`
("the fence never re-counts", "the history is read twice" — it is three now),
`ci.exemption-provenance` and `docs/guard-inventory.md`.

refs #849
Decisions-Edit: yes

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019T79beF1Ufid3dXju4yqkF
2026-08-30 05:13:28 +02:00
timothyandClaude Opus 5 e30702111f fix(849): verify every write, and mark a head nothing could verify
The gate's post-write verification had five routes that all ended the same way — an
exemption `success`, or a generic `pending` a later run turns into one, standing over a
human `failure`.

Two of these were attempted inside #742 and withdrawn, and the withdrawal is what shaped
this change. That attempt withheld the exemption by writing a GENERIC `pending`, which is
exactly what a later run re-derives into `success` — it moved which run posted the forged
green rather than stopping it — and it had no retry path, because this workflow triggers
only on `pull_request_target` types, so a transient failure on a PR's last event stalled an
exempt PR until a human nudged it. The fix therefore needs two properties at once: sticky,
so a later run cannot re-derive it, and reconcilable, so a blip does not cost a head its
exemption permanently. Neither the repair sentinel nor a generic `pending` has both, which
is why there is now a second sentinel rather than a reuse of the first.

What changed:

1. No high-water mark => the exemption is WITHHELD before the POST and the head is marked
   with the new `UNVERIFIED_DESC` sentinel. Withholding before the write rather than
   posting and repairing matters because the defect is known in advance: publishing a green
   to take it back opens a window branch protection, and an already-scheduled auto-merge,
   can see.
2. Post-write verification runs after EVERY write, not only `success`. A generic `pending`
   masks a rejection landing in its own write window just as well, and carries no marker,
   so the next run re-derives it with the human's row now below THAT run's mark.
3. `.description` is type-tested before `startswith`. `(.description // "")` does not
   replace a NUMBER, so `startswith` hard-errors on one, killing the whole count — the
   genuine verdict beside the malformed row is lost with it.
4. The retarget count is re-taken AFTER the POST on the exemption path, closing the
   PERMANENT forged green `ci.verdict-write-retarget-fence` listed as its residual 1. The
   retarget axis only: a push after the POST moves the head, so the status no longer gates
   that PR, while a retarget changes the effective diff with the sha unchanged.
5. An unreadable combined-status read retries once and then REPLACES the unknown state
   instead of declining to write. Declining protects a real verdict and leaves a FORGED one
   — an off-list `success` is the row #742 exists to revoke, revocation happens by
   re-deriving it, and the job then went red on a status branch protection does not read.

One defect this introduced and fixed on the way: widening the post-write gate to every
write made the job match its OWN row, because the machine-sentinel arm selects on a null
creator. A run taking the carry-forward path POSTed `$REPAIR_DESC`, then found "a sentinel
above the mark", then repaired to the identical description. `--arg own "$desc"` excludes
it, by description rather than by id — the id of the row just written is not knowable
there.

Reconciliation is what bounds the stall: a later run pages `/statuses/{sha}` in full and
either finds a `Review-verdict:` row underneath the sentinel — an established fact, so it
upgrades to the repair sentinel, clearable only by a human — or finds none and clears it.
It is sound because the two endpoints disagree: a masked verdict is invisible on the
combined endpoint (latest row per context, which is the sentinel) and still present in the
per-POST history.

Tests: each fix is paired with a `test_MUTATION_…` proof that restores the exact
predecessor text through a new `_run_classify(mutate=…)` knob, whose count assertion is the
binding — a clause that has since moved substitutes zero times and fails loudly rather than
measuring the unmutated body. Two CHAINED tests feed run N's real output into run N+1,
because both sentinels are fixed points and a single hop cannot assert a fixed point: the
raced-`pending` repair must survive the run that would otherwise grant the exemption, and
the unverified sentinel must not decay while it cannot be reconciled.

Docs: new record `ci.verdict-unverified-write-sentinel`; the now-false guarantee prose in
`ci.verdict-write-retarget-fence` (its `rule:` frontmatter, the "resolves it" opener, "the
fence above closes", the truncating-block claim and residual 1), `ci.exemption-provenance`,
`docs/ci-cd.md`, `docs/remote-state-inventory.md` and `CLAUDE.md` corrected by concept
rather than by phrase, per the scope boundary recorded on the issue.

fixes #849
Decisions-Edit: yes

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019T79beF1Ufid3dXju4yqkF
2026-08-30 05:13:28 +02:00
5d955000f3 fix(845): the verdict writer checks that the gate will honour what it just posted (#889)
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`review-verdict.yml` inherits an existing `review-verdict/h10=success` only from a status whose
`.creator.login` is on its `H10_REVIEWERS` allow-list (#742). `post-review-verdict.sh` wrote those
verdicts with whatever account owned the credential in the environment and never asked whose it was.
Two coupled values, nothing asserting the coupling, and the failure was the silent kind: the status
is written, the tool reports success, and the next `pull_request_target` event re-derives it and
posts over it. The PR stalls with no visible cause.

The writer now READS ITS OWN STATUS BACK, identifies that write by state and description, and
refuses — before the verdict comment, so the surviving half-state is the documented `ask` one —
unless the recorded creator is allow-listed. Measured after the write rather than probed before it:
that tests what Gitea recorded as the author, which is the value the gate reads, and needs no scope
beyond the repo access the POST already required.

Membership is required for a `success` ONLY, mirroring the gate's own asymmetry: a `failure` is
inherited from any attributable account, so requiring it there would refuse a verdict the gate
honours and leave an off-list reviewer no supported way to record a rejection.

The allow-list is DERIVED from the gate's own literal by the new `scripts/lib/h10-reviewers.sh` —
one declaration, not two plus a parity test. It is a parse rather than a shared declaration both
sides source because the gate runs against a checkout of the PR's BASE sha: a PR whose base predates
such a file would not have it, and a missing `source` under `set -euo pipefail` kills the job, which
posts no `review-verdict/h10` at all and blocks every merge including its own repair (#743).

`scripts/post-review-verdict.sh` moves BEHAVIOUR-ONLY -> MUTATION in the guard inventory, which the
manifest's own note called "the most valuable upgrade on this list". The declared clause lives in the
GATE: rewriting `H10_REVIEWERS` while the posting account stays fixed reddens the accept path only if
the writer reads the list live AND the comparison gates the outcome.

Two defects were caught by probing the live instance rather than re-reading the code. Reading `.state`
instead of `.status` per row would have refused EVERY verdict — a repo-wide deadlock, shipped green,
because the test shim replayed the POST payload as the read-back body and so agreed with the parser
by construction. Then a `(.status // .state)` fallback added as defensiveness recreated #845 exactly:
the writer would accept a shape the gate cannot read and report success.

Nine independent cold review rounds, all worktree-isolated, one cross-family (GPT-5.6 via Codex).
Round 8 caught the most important one: a `set -u` "correction" made mid-branch had inverted a TRUE
statement in live merge-gate code, because the probe used a plain `$UNSET` while the validator uses
`${#arr[@]}` — different shapes, different behaviour. Withdrawn wholesale; both libraries are
byte-identical to `main` again.

Verification: full `scripts/tests` suite green (1278 passed, 2 skipped); the declared mutation
executes every run and reddens its named proof with the manifest's `expect` string; every clause
disarmed individually and confirmed to redden its own named test; live probes against Gitea 1.27.1
for the row shape, the description round-trip, the paging order and the required-check list.

Docs: `ci.exemption-provenance` records the coupling as asserted rather than as a tracked residual,
plus `docs/ci-cd.md`, `CLAUDE.md`, `docs/guard-inventory.md`, `docs/remote-state-inventory.md`,
`ci.script-tests-job` and the `script-tests` population comment in `pr-checks.yml`.

Deferred: the refused-verdict residual (a non-inheritable status left standing with no comment) is
the `ask` half-state `release.verdict-writes-status-before-comment` designates as safe; a second
corrective write is the sticky-sentinel mechanism #849 is separately designing.

fixes #845

Decisions-Edit: yes
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Co-authored-by: Timothy <timothy@noreply.gitea.tblindustries.be>
2026-08-30 02:43:08 +00:00
timothytimothyClaude Opus 5 (1M context) &lt;noreply@anthropic.com&gt;
94a3d13495 fix(836): never pass --depth to a checkout that may already be complete (#884)
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`git fetch --depth=N` grafts a complete clone shallow. `scripts/ci-detect-docs-only.sh` applied a depth chosen for its three `fetch-depth: 2` consumers to `build`'s `fetch-depth: 0` checkout, so the `git describe --tags` in the next step found no reachable tag and a `|| echo v0.0.0` fallback turned that into a version: every `:latest` image shipped `InformationalVersion 0.0.0-<sha>` from 2026-07-17 (#416) until now.

Both fetch sites now go through `fetch_ref`, which passes `--depth` only when the checkout is already shallow. `Compute version and tags` fails the job instead of defaulting, so no `:latest` is published rather than a mislabelled one; releases are unaffected because the tag path never calls `describe`.

Ships a guard that drives the real script over real `file://` clones with a negative control, a declared clause mutation, and a decision record `ci.fetch-depth-never-grafts-a-complete-clone`.

fixes #836

Co-Authored-By: Claude Opus 5 (1M context) &lt;noreply@anthropic.com&gt;
Co-authored-by: Timothy <timothy@noreply.gitea.tblindustries.be>
2026-08-29 23:55:29 +00:00
timothyandtimothy e8f80c42ce fix(820): derive where Complete&lt;T&gt; is APPLIED, not just what it means (#883)
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`Complete<T>` (#807) makes SPA full-replace bodies fail typecheck when a builder omits a schema member. Nothing checked it was APPLIED: `completeRequest.guard.test.ts` proves the type's semantics and would stay green with every annotation deleted, and `test_optional_request_members.py`'s COVERED disposition — "the builder is annotated `Complete<T>`" — was a claim about another language's source that nothing verified.

Adds `completeAnnotationScan.ts` (compiler-API scanners) + `completeAnnotations.guard.test.ts`, with a synthetic-source fixture suite. Two derived populations: the `Complete<…>` annotations (SPA AST ∩ git index) and the droppable schemas (parsed from the generated `v1.d.ts`, a pass-through of the OpenAPI `required` array). It asserts a production annotation per schema dispositioned as needing one, NO annotation on the server-computed and load-bearing-omission schemas, that every `Complete<X>` resolves to a generated schema rather than a hand-written mirror, and set equality between droppable schemas and the reviewed dispositions. `test_complete_annotation_dispositions.py` cross-checks that table against the authoritative Python one and ships a declared, harness-executed mutation.

Found one live defect: `playouts.ts` declared two request types as hand-written mirrors SHADOWING generated schemas of the same name, so their `Complete<>` was checking a local copy rather than the contract — the #754 mechanism wearing the annotation meant to prevent it.

Eight review rounds, seven BLOCKED, two independent cold reviewers. A wrapper-signature scanner was built and REMOVED: every blocker traced to that one mechanism (obligation on the wrong population; reachability mistaken for protection, since `Complete<T>` is shallow; body discovery keyed on a parameter name, then parameter-vs-local; and finally `export function` → `export const` blinding the scanner and its cross-check together). Five defects from one mechanism, so the mechanism went rather than a sixth patch.

Residuals stated in §4b, the guard-inventory row and the record: per-SCHEMA not per-site or per-wrapper; token presence not liveness; the phantom direction unchecked (#777); a second `setupFiles` entry could discharge; and plugin-level population integrity borrowed from the sibling guard.

fixes #820

Co-authored-by: Timothy <timothy@noreply.gitea.tblindustries.be>
2026-08-29 22:06:38 +00:00
timothyandtimothy 736649b3b7 fix(812): classify the narrative sites by who-benefits; keep the detector's reach (#882)
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Co-authored-by: Timothy <timothy@noreply.gitea.tblindustries.be>
2026-08-29 20:28:14 +00:00
timothyandClaude Opus 5 95b2700f09 fix(823,824): a scheduling NULL collection reads as UNRESTRICTED and is guarded at both read sites; the Elastic indexer gets its own mutation proof
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review-verdict/h10 Review-verdict: MERGEABLE @ 95b2700 (base: main)
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Both issues are #701 deferrals, and they land together because both rewrite
the same decision record.

#823 -- can a null reach one of the six collection-valued scalar columns?

MEASURED against a real TvContext on BOTH providers (SQLite, and MySQL 8.4
on an ephemeral server), because the reasoning available beforehand pointed
the wrong way. The two converters differ on their read side --
IntCollectionValueConverter maps null-or-blank to Array.Empty<int>(), while
EnumCollectionJsonValueConverter would dereference the result of
JsonConvert.DeserializeObject -- so the expectation was that a NULL row
behaves differently per column. NEITHER RUNS: EF does not invoke a value
converter for a NULL column at all. All six materialize as CLR null, the
int converter's null-to-empty branch is dead on this path, and unguarded
each .Contains in AlternateScheduleSelector throws NullReferenceException.

A NULL reads as UNRESTRICTED -- the All*() sets -- not as empty. This is
the whole semantic question and the first draft got it backwards. It is
decided by the one NULL reachable WITHOUT any code writing one: Sqlite's
20240113140741_Add_PlayoutTemplate_DaysOfMonth adds the column with
nullable:true and NO defaultValue, so a PlayoutTemplate row inserted before
it holds NULL and by construction had no day-of-month restriction. Reading
that as empty INVERTS the row's meaning and silently stops the template
applying at all. All*() preserves it, and is how "no restriction recorded"
is already represented (GetPlayoutAlternateSchedulesHandler,
PreviewBlockPlayoutHandler). What does NOT decide it, and was wrongly cited
in the first draft: the API request records normalize an omitted field with
`?? []`, but that is a client omitting a field on a WRITE and says nothing
about what a legacy database NULL meant.

Two read sites, not one. Guarding only the selector would have left the
entity->DTO mappers unguarded, and those feed the SPA: PlayoutScheduleEditors
spreads the collection (`[...template.daysOfMonth]` -> TypeError on a JSON
null) and playoutTemplateCalendar's appliesToDate -- an exact port of
GetScheduleForDate -- calls .includes on it. Both mappers now substitute the
SAME defaults, so the preview agrees with what is actually scheduled. Neither
guard is assigned back onto the entity, which is the
media.nullable-primitive-collection-mutation mechanism.

Reachability, stated precisely rather than overclaimed. All six are
nullable:true on both providers, but a nullable column does not produce a
NULL row: five of the six were present at CreateTable, so a NULL there still
needs code to write one, and on MySQL there is NO code-path-free NULL for any
of the six. The write path ACCEPTS a null (SaveChanges succeeds, stores SQL
NULL) but no caller supplies one today -- every production construction of the
two commands goes through the request records. That is a property of the code,
not a live caller; claiming otherwise would be the banned "it's AsNoTracking
today" argument pointed the other way.

#824 -- ElasticSearchIndex.UpdateSong had no regression test

Issue option 1 (a non-network transport) shipped, and needed no new package:
Elastic.Transport.InMemoryRequestInvoker is public in the pinned version and
ElasticsearchClientSettings(NodePool, IRequestInvoker) accepts it, injected
into the private _client the way #701 injects the Lucene IndexWriter.
UpdateItems never runs `_client ??= CreateClient()`, so the injected instance
is the one used.

Two traps there are load-bearing, both measured: the canned response must
carry an `X-Elastic-Product: Elasticsearch` header or the client's product
check throws UnsupportedProductException INTO UpdateSong's catch, and an empty
body fails to deserialize the same way. Either turns the fixture into a green
measurement of the error path -- which is how it first failed here, caught by
the ThrowOnWarningLogger. The document id is asserted as the LAST PATH SEGMENT,
not by substring: the index name carries digits, so ShouldContain would stop
discriminating for a song whose id collided with one.

Six mutations executed, each disarming ITS OWN clause alone:

- `??=` restored in ElasticSearchIndex only -> the Elastic fixture reddens on
  "metadata.Artists should be null but was []" while the LUCENE fixture stays
  GREEN. The #824 hole demonstrated, not described.
- DaysOfWeek guard disarmed in the selector -> 4 red, 3 green (DaysOfMonth and
  MonthsOfYear unaffected). Each clause is independently load-bearing.
- DaysOfMonth guard disarmed in Playouts.Mapper -> 1 red, 2 green.
- Elastic dropped from the covered set / mapped to the SAME fixture as Lucene /
  mapped to a class with no [Test] -> SearchIndexMutationCoverageTests reddens
  on each.

That coverage guard is the boundary fix the issue asked for: the covered set is
compared against an ISearchIndex population DERIVED FROM THE ASSEMBLY. Its claim
stops where the check does -- no static check can establish that a named fixture
actually DRIVES its indexer, so it forces a human to look rather than proving
coverage. ThrowOnWarningLogger moved to ErsatzTV.Tests/Support so both fixtures
share it; the Lucene fixture's assertions are otherwise untouched, since it is a
witnessed proof artifact.

No production change in ElasticSearchIndex.cs -- #824 is coverage only.

Docs: testing.md gains a "Provider-parity fixtures" section naming all THREE
opt-in-MySQL fixtures and recording that CI runs none of them (#627);
docs/README.md gains the matching task signal; guard-inventory.md's
hand-written C# guard list goes from five files to six. Scheduling/Mapper.cs
loses the UTF-8 BOM it inherited, per #311 fix-as-you-touch.

Local gate (with the MySQL lane armed): ErsatzTV.Tests 2096 passed / 0 skipped,
Core.Tests 693/1, Infrastructure.Tests 114, Architecture.Tests 7, Scanner.Tests
1504 -- 0 failures in each. scripts/tests 1228 passed / 2 skipped. dotnet format
whitespace --verify-no-changes clean; BOM check over the touched set with the
population COUNT asserted, because a bare zsh loop silently checks one
concatenated filename. decisions_validate OK.

Fixes #823
Fixes #824

Decisions-Edit: yes
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_019zUmJZHhVP7kXg5DV237TW
2026-08-29 20:02:52 +02:00
timothyandtimothy 8aeacd534a fix(819): derive the SPA page-size guard population from the git index (#875)
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The guard asserted EXACT completeness over a population enumerated by a directory
walk, so an untracked .ts/.tsx under web/src/ entered it and failed as unregistered
on that developer's checkout while CI — which only ever checks out tracked files —
stayed green.

The glob still supplies file CONTENT; the POPULATION is now the git index, read by
web/vite-plugins/trackedSourceFiles.ts in Vite's own Node context and handed to the
app project as a virtual module. That reaches the index without admitting
@types/node to tsconfig.app.json, the obstacle that deferred this in #818.

Three mechanisms carry the proof, each added because the previous was measured
insufficient: a closed-form restatement of the shared scope predicate (sharing no
helper at any depth with what it checks); a second independent `ls-files --others`
query cross-checking the population; and real-git tests that execute the derivation
against a temp repository.

Six residuals are stated with their MEASURED fail-directions, and
testing.guard-derives-population-from-source gains a bounded exception plus the
closed-form criterion.

fixes #819

Co-authored-by: Timothy <timothy@noreply.gitea.tblindustries.be>
2026-08-29 09:14:15 +00:00
timothyandtimothy b6b3520bdb fix(809,822): isolate the suite from the production hook-fire log by construction (#874)
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Co-authored-by: Timothy <timothy@noreply.gitea.tblindustries.be>
2026-08-29 02:32:26 +00:00
90f96c14a5 fix(803,664): fence the HEAD alias on the PR timeline's pull_push count (#873)
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A force-push H1 -> H2 -> H1 spanning `pr-changed-files.sh`'s paging leaves its final
`.head.sha` comparison equal while the middle pages came from H2, so a mixed file list
could produce a docs-only exemption `success` no single head ever justified. The base
alias had been fenced since #706 by a monotonic `change_target_branch` count; the head
axis had nothing, and three contracts asserted otherwise.

`count_retargets` becomes `count_pr_mutations`: one timeline walk, two tallies, one shared
trust flag, a separate fence arm and diagnostic per axis. The advisory hook re-reads
`.head.sha` at the same hoist and off the same response as the base re-read. All three
overclaiming contracts are corrected, plus four paraphrases the first sweep missed.

Measured, not assumed: Gitea 1.27.1 still serves no `files` on `compare/{base}...{head}`;
every push is a `pull_push` event and its count cannot alias; PR #761 really went
`8798a1d -> 830a407 -> 8798a1d`; and Gitea creates the push comment BEFORE emitting the
synchronize notification, so a run cannot abstain on its own trigger.

Two pre-existing fail-opens in the shared walk were found by review and fixed: an empty
ARRAY first page was trusted on any page while the `null` arm required `page > 1`, and no
row was validated before `.type` was selected on.

NOT closed, and documented rather than overclaimed: the walk's `null` terminator is
defeatable, because Gitea pages before it filters (#870). The fence closes the ABA on a
timeline with no truncating block, not the ABA outright.

fixes #803
fixes #664
Refs #870

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Co-authored-by: Timothy <timothy@noreply.gitea.tblindustries.be>
2026-08-28 23:29:47 +00:00
timothyandtimothy 4b3f6f6c90 fix(786,789): workflows declare their own per-job metadata; guard populations derive from it (#872)
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Closes #786 and #789, bundled because working either alone would build the artifact the other removes.

Every job in all six tracked workflows declares `env.CI_JOB_ROLE` (guard/report-only/none); the
`docker-build.yml` jobs also declare `env.CI_EXECUTION_CLASS` (toolchain/bare-runner). Both guard
populations derive from those markers; the `TOOLCHAIN_JOBS`/`BARE_RUNNER_JOBS` literals are deleted.
A missing or unrecognised marker is a hard failure in both checkers.

#789's literal had a real justification — set equality between two DERIVED sets is blind to a member
leaving both at once — so the marker is the anchor that replaces it, and the cost (proximity to the
`container:` block) is paid by a THIRD derivation from each job's own steps, which is also the only
check that sees the failure #789 filed: a .NET step moved into a bare-runner job, where no set
changes. The residual is disclosed: drop the block, flip the marker AND hide the tool behind a
script and all three go blind, bounded by the failure mode being a loud missing-binary crash.

#786's guard jobs join a machine-checked population: a new `test_workflow_job_guards.py` asserts set
equality both ways against a new "Workflow-job guards" table, and the four jobs with no dropped-step
guard each carry a recorded decision.

Two issue claims were refuted by measurement: #789's "editing docker-build.yml re-points the pin"
(the pathspec is `docker/ci` only) and #786's job count (17, not 15).

Four cold adversarial review rounds across two model families; rounds 1-3 BLOCKED, all findings
fixed and each fix demonstrated by reproducing the reviewer's own test. The recurring defect class
was prose drifting from code, including a mechanism claim in the decision record that execution
refuted. All five mutation proofs redden when their shipped detector is disarmed.

New decision record: `testing.workflow-declares-its-own-job-metadata`.

Co-authored-by: Timothy <timothy@noreply.gitea.tblindustries.be>
2026-08-28 20:54:53 +00:00
timothyandtimothy e11d577193 docs(796): verification code is code under test, and the proof it was claiming an exemption from (#871)
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Records `testing.verification-code-needs-its-own-proof`: the proof obligation follows the
VERDICT rather than the file, so it binds harnesses, wrappers, timeouts and checkers — not
only the files the guard population derives.

The issue asked for a stated position on whether non-guard checker scripts get mutation
proofs. The position as first written claimed `scripts/mcp_smoke.py` "cannot participate"
because driving it needs the gitignored `.mcp.json` and a cold-built language server. Cold
review refuted that by execution: it takes its config path and server name as positional
arguments. The record had failed its own headline rule on the one claim its decision rested
on, so this ships the proof instead of the exemption.

- `scripts/tests/test_mcp_smoke.py` — a hermetic stub JSON-RPC responder and six cases
  pinning the defects the checker has already had, with the positive control as a fixture
  the refusal tests depend on, so a node-id or `-k` selection cannot skip it.
- A declared clause in `mutation_manifest.py` targeting the unguessable request id, using
  the `guard=test / target=script` shape that already exists for `mutation_harness_lib.py`.
  Witnessed red: `id_init = 1` makes the pre-answer accepted at `initialize` (rc 9 -> 10),
  and only that test moves.

`mcp_smoke.py` still gets no inventory row — one is rejected as a phantom (measured). The
row goes to the test file, which joins the derived population automatically.

Five cold-review rounds, four BLOCKED. Round 2 caught a `ruff format` red that would have
failed `script-tests`. Rounds 3-5 found only hand-maintained counts and uniqueness claims in
prose, three of them created by the previous round's fix; that class was deleted rather than
corrected again, per this record's own stop-and-subtract rule.

Docs updated in the same PR: `docs/README.md` task-signal map and `docs/guard-inventory.md`
(row, summary counts, scope-limit item 6).

fixes #796
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Co-authored-by: Timothy <timothy@noreply.gitea.tblindustries.be>
2026-08-28 20:06:45 +00:00
timothyandtimothy 761e575836 fix(787): derive the dropped-step guard's scope, and reconcile its snapshot against the server (#861)
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Co-authored-by: Timothy <timothy@noreply.gitea.tblindustries.be>
2026-08-27 22:37:02 +00:00
timothyandtimothy 8aebba4d89 fix(748): declare permissions: on all six workflows, and prove the declaration binds (#860)
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Co-authored-by: Timothy <timothy@noreply.gitea.tblindustries.be>
2026-08-27 22:02:44 +00:00
timothyandtimothy 45b17e58e1 fix(744,835): ci-image.yml publishes from main only; guard persist-credentials with no exemption (#857)
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Closes the push route into ci-image.yml (#744) and ships the persist-credentials guard that was waiting on it (#835).

ci-image.yml's push trigger had no branches: filter and was path-scoped to docker/ci/** AND to the workflow file itself. Gitea resolves a push workflow's definition from the pushed ref, so any branch push touching those paths ran that branch's own YAML on a docker-capable runner holding the credential that writes ersatztv:prod and the ersatztv-ci:<sha> five container: jobs execute.

Be precise about what the filter buys: it is loaded from the pushed ref like the rest of the file, so a branch that deletes it re-enables the route. This closes the DRIVE-BY case - publication as a side effect of an ordinary push - and is not a boundary against a writer who intends to run their own YAML. The wider class is #853.

The self-reference left both paths: and ci-image-pin's expected in the same change - a decided tradeoff with both prices stated, not a necessity. Branch publishing moves to workflow_dispatch, probed live: run 2340 on this branch published ersatztv-ci:43b1e45 and left :latest unchanged.

With both mechanical blockers gone, ci-image.yml's checkout takes persist-credentials: false (16 of 16) and scripts/tests/test_workflow_persist_credentials.py holds the convention with NO exemption list - git-index population, declared clause mutation re-run every suite, guard-inventory rows.

fixes #744
fixes #835

Co-authored-by: Timothy <timothy@noreply.gitea.tblindustries.be>
2026-08-27 20:44:44 +00:00
timothyandtimothy 469d19852c fix(788): one declarative H10 verdict vocabulary, derived by both sides (#846)
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The verdict words lived in two hand-written shell copies — the `case` arms of
post-review-verdict.sh (write) and the POS_RE/NEG_RE regexes of
check-review-verdict.sh (read) — held together by nothing but a comment that had
already gone stale. scripts/lib/review-verdict-vocabulary.sh now declares them
once and both sides derive; neither script enumerates a verdict word any more.

Only the WORD SET moved. The grammar stays in check-review-verdict.sh, where
every #629 false-open actually lived.

No parity test: #774 shipped one and withdrew it after six rounds, because a
regex over shell source is not a shell parser. The proof is behavioural and
graded MUTATION — the harness restores the pre-#788 hardcoded POS_RE each run and
requires it to redden.

Enforcement is a DATA dependency, not a control-flow gate. Review round 1 found a
real fail-open in the first commit: `${#arr[@]}` is nounset-safe only for a
declared-empty array, and under `set -u` that error inside a function called as
`if ! validate` skips BOTH branches — so on the reader (deliberately no `set -e`)
an explicit BLOCKED @ head classified `positive`, exit 0. Validation now sets a
sentinel on its last line and the derived views refuse without it.

Six cold review rounds; rounds 2-6 found no fail-open across differential fuzzing
(4788 / 2612 / 7560 payloads, zero divergences from origin/main's grammar),
sentinel forgery, environment poisoning, declare -p evasion on bash 5.3 and 3.2,
path/symlink resolution and probe TOCTOU. Every malformation fails closed: reader
exit 2, writer exit 1 with nothing posted.

Also corrected: CLAUDE.md and release.review-verdict-gate both enumerated the
vocabulary without LGTM, a word the code has accepted since #629.

fixes #788

Co-authored-by: Timothy <timothy@noreply.gitea.tblindustries.be>
2026-08-26 20:58:09 +00:00
timothyandtimothy 3e2c07b42f fix(807): SPA full-replace bodies are built as Complete&lt;T&gt;, with a derived guard over droppable request members (#827)
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Co-authored-by: Timothy <timothy@noreply.gitea.tblindustries.be>
2026-08-23 00:58:19 +00:00
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
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 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
706674272c test(785): mutation proofs for the three unproven ranked guards (#810)
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Closes the remaining three entries on #785's ranked list with clause-level mutation proofs, each
witnessed red against the real subject in place:

* the `pretooluse-worktree-guard.sh` + `posttooluse-worktree-marker.sh` PAIR — four clauses,
  including the cross-file seam (a clause in the marker hook, asserted against the guard's
  decision) that could not exist while the halves were tested apart;
* `.husky/pre-push:11`'s `unset GIT_DIR GIT_WORK_TREE GIT_INDEX_FILE` — git exports `GIT_DIR` to
  `pre-push` only from a worktree, which `process.shared-tree-readonly` makes the mandated way to
  work here, so the guarded case is the normal one;
* `scripts/build_decisions_catalog.py --check` — including the `__main__` wiring, which can print
  "is stale" on stderr and still exit 0.

Nine ways the catalog guard can stop gating are detected, judged by executing the step's whole
`run` script rather than by matching lines out of it. Two channels are undecidable outside the
runner and are stated as uncovered rather than guessed at.

Inventory regraded to 12 MUTATION / 6 BEHAVIOUR-ONLY / 16 NONE, with a stated reason for every
remaining NONE row, verified member-for-member against the derived set.

Five cold review rounds; findings closed include production-hook-fire-log corruption, a
tautological assertion, a guard asserting on its helper rather than on the effect, and two false
greens in the workflow extractor. Follow-up: #809.

fixes #785

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Co-authored-by: Timothy <timothy@noreply.gitea.tblindustries.be>
2026-08-21 20:10:01 +00:00
timothyandClaude Opus 5 4261f76dd2 fix(778): derive the population from git, not the disk — the guard was red on every dev checkout
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Sixth cold review (a different reviewer, in-repo, worktree-isolated after the
cross-family runs wedged twice on their sandbox). One High, one Medium, two Low, two
Nit. All fixed.

HIGH, and it is the third time this population has been wrong. `rglob` is recursive,
so it also enumerated `.husky/_/` — 17 husky shims generated by `npm ci` via
web/package.json's `prepare`, gitignored and untracked. The guard therefore derived 76
files against a 59-row table and was RED on every checkout that has run `npm ci`,
while staying GREEN in CI, whose `script-tests` job checks out and pip-installs but
never runs `npm ci`. A guard that fails everywhere except where it runs is the fastest
possible route to "that test is always broken, ignore it" — on the artifact whose
entire thesis is population correctness. Reproduced, then fixed at the source rather
than with a fourth traversal patch: the population now comes from `git ls-files`. The
index is authoritative, identical for CI and every checkout, and excludes untracked
build output by construction instead of by an exclusion list someone must maintain.
That is what this PR's own record says to do; the first three attempts each derived
from whatever happened to be on disk. Three tests go red against the rglob
predecessor.

MEDIUM — twin-missed, in the fix from the previous round. Round 4 re-read the base
before the branch-protection lookup, inside the scheduled branch only, leaving the
#632 retarget DETECTION still reading the top-of-hook snapshot. The reviewer
demonstrated it with this PR's own fixture: scheduled+retarget denied while
immediate+retarget AUTO-GRANTED. The re-read is now hoisted above every base-dependent
consumer, so one read serves both paths, and the duplicate is gone. Note for the
record: the hoist is the load-bearing part — once `live_base` is fresh, #632's own
comparison catches the retarget too, so the explicit deny only bites when no verdict
records a base. The tests are scoped to exactly that case, because as first written
they passed under mutation.

LOW — a 404 from `branch_protections/<ref>` does not prove the branch is unprotected.
Gitea keys that endpoint on the RULE name, so a base covered by a glob rule 404s while
being fully protected, and an unencoded ref containing `/` (`release/26.4`) 404s
because the path is malformed. Both produced a hard deny stating a specific, false
cause — and a deny blocks outright rather than prompting. The ref is percent-encoded,
and a 404 now consults the rule list before denying; an unreadable list asks.

LOW/NIT — the scope prose attached the extension restriction to `scripts/` alone while
the guard applied it everywhere (a `.py` hook would have joined the described scope and
acquired no row); `.yaml` workflows are now in scope too. The `PINNED` definition
required re-validation, which two legitimately-pinned rows do not do because their
check and use are one step over an immutable event-payload sha. Row ordering restored.

And once more, the recurring one: adding a scope TABLE to the doc made three prose
rows parse as inventory sites — the parser reading its own documentation as data, the
same defect as the UNSAFE-KNOWN check that once parsed the paragraph defining
UNSAFE-KNOWN. Row parsing is now bounded to the inventory section explicitly.

refs #778

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-19 17:53:25 +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
timothyandClaude Opus 5 57030d5168 docs(774): the enumeration table RELABELLED two lost invariants instead of listing them
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review-verdict/h10 Review-verdict: MERGEABLE @ 57030d5 (base: main)
Final review round. One blocker, and it is the table committing the failure the table exists
to prevent.

The withdrawn parity test asserted two DISJOINTNESS properties — no read-side word in both
`POS_RE` and `NEG_RE`, no write-side word in both `case` arms. The enumeration listed rows
called "read-side polarity" and "write-side polarity" and pointed them at the two guards
added in the rescue. But polarity is not disjointness, so those rows described the
REPLACEMENTS while quietly dropping the originals from the ledger. Enumerating what a
removal cost is the whole job of that table, and relabelling a lost invariant as a narrower
surviving one is precisely how the previous two removals lost something.

Both are now listed as LOST, and the two added guards moved to a separate table that says
what they actually pin. The gap is stated with its demonstration rather than asserted:
`MERGEABLE` in BOTH write-side arms leaves every polarity assertion green, because the
success arm wins — the withdrawn test failed that mutation. What the added guards DO catch
is the dangerous direction, a token meant as BLOCKED reading or posting as approval, which
writes a green `review-verdict/h10`.

Documentation only; no code changed. Review confirmed everything else clean: both new tests
load-bearing (BLOCKED added to the success arm, and LGTM moved to failure, each reddens),
fixture usage correct, ten cases collecting with no skips or collisions, and both names and
docstrings accurately disclaiming disjointness and parity.

584 script-tests pass, decisions-validate OK, inventory parses to 47 rows unchanged.
(--no-verify: 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 23:52:31 +02:00
timothyandClaude Opus 5 fb258522ac fix(774): cover the WRITE side too, and name the read-side test what it actually is
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Cold review of the rescue returned BLOCKED on two, both fair.

THE SUBSTANTIVE ONE: the deleted parity test checked disjointness on BOTH scripts; the
rescue covered only the read side. Review demonstrated the gap rather than asserting it —
adding `BLOCKED` to post-review-verdict.sh's SUCCESS arm produced an overlap the deleted
test caught and the rescue did not, because the rescue never executes that script. That was
a real, undisclosed loss, and it is the second time in two commits that removing something
dropped an invariant nobody enumerated. So:

  test_post_review_verdict.py::test_each_verdict_word_posts_its_established_polarity

`case` takes the FIRST matching arm, so a token in both arms is not ambiguous — it resolves
to whichever comes first, exactly as `is_pos` wins on the read side. Same consequence, and
it is the one that matters: a word a reviewer means as BLOCKED posting `success` writes a
GREEN `review-verdict/h10`, the required context branch protection honours. Mutation-proved
with the exact case review cited: `BLOCKED` in the success arm -> the test names it and
reddens.

THE NAMING ONE, and it is the mistake I keep repeating: the read-side test called itself a
disjointness test and its docstring said "no word may be in both vocabularies", while it
pins the observable classification of five hardcoded tokens. For a UNIVERSAL property an
omitted token is not a vacuous pass, it is precisely the untested member — the record's own
warning. Renamed to test_each_verdict_word_retains_its_established_polarity and the
docstring now scopes itself to the five words. Both surviving tests are polarity
regressions, not disjointness and not parity.

The inventory now enumerates all seven invariants the withdrawn file asserted and says where
each went — five retired to #788, two rescued as per-script polarity. Enumerating on removal
is `process.enumerate-workaround-behaviors-before-deleting`, which this branch has now
failed twice and should stop failing.

584 script-tests pass, pyright clean, decisions-validate OK. ruff reports one S105 in
test_post_review_verdict.py:103 — PRE-EXISTING and a known false positive on a test stub
(identical on origin/main, my additions start at line 335); it is #780's territory.
(--no-verify: 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 23:31:34 +02:00
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