docs(devx): check-react-page-adapter-contract names its class by shape, not by the records spelling, and re-anchors its citation (#15599) - #15770

Fixes #15599

Header-only edit on scripts/check-react-page-adapter-contract.mjs. Nothing this
gate does changes: no detector, no population, no verdict. #15094 ruled the
population stays (option D), and that fence is honoured literally — the proof is
below.

1. The class is named by SHAPE, not by the records spelling

The header's three worked instances are all spelled .records, and the header
(and the card family's titles) inherited that spelling as if it named the class.
It does not. The class is a union normalizer —
Array.isArray(x) ? x : x.LIMB applied to a find() result — and the limb it
reads is records in some members and data in others, with some members
carrying both. A reader who greps records sees a fraction of the class and
concludes it is a fraction of its real size.

2. The counts, re-measured on the branch base — and why they are a BAND

Re-derived on 66e68adc6 (this branch's base) from the #15094 census's prose
definition of its detector C, over the roots the census names (packages/** +
examples/**, source extensions, excluding node_modules / dist / .cache /
.turbo / coverage / build / .next). The harness is a throwaway; it is
NOT committed, exactly as the census's was not.

Method (the reading quoted in the header). On comment-, string-, template-
and regex-literal-masked source (offsets preserved), every Array.isArray(EXPR)
whose root identifier ID is also read as .records or .data — through an
optional TS cast, never across a statement or block boundary — inside the
innermost brace-balanced enclosing block, or inside EXPR itself.

Files scanned: 5,694 — the same number the census reports, so the population
is the same population.

These differ from the card's numbers, and the PR carries mine. The census
(report 5547410463, at ca46f8f12) read 104 blocks: 41 records, 57 data,
6 both. Its harness was never committed, so the definition had to be re-derived
from prose — and four defensible readings of "the same brace-balanced enclosing
block" gave 69 / 116 / 142 / 164 blocks on ONE tree:

The 142 reading is the one quoted because it is the only one that reproduces
all four members the census names by path:
packages/verify/src/rls.ts, packages/rest/src/import-runner.ts,
packages/cli/src/utils/secret-reference-union.ts, and
packages/plugins/plugin-auth/src/phone-sms-texts.ts. Its precision is not
1.0 — spot-checking found at least one false positive
(packages/objectql/src/engine.ts, where Array.isArray(manifest.objectExtensions)
shares a block with an unrelated manifest.data), consistent with the census's
own measured 0.857 on the narrow route.

⚠️ So the header says the counts are a band, not a constant, and tells the next
reader to re-derive rather than trust the literal — the census report's own
warning (⛔ "do not close a stale-citation card by adding two more" stale
literals). What every reading agrees on is the load-bearing half: both limbs
are populous, so the spelling cannot be the signal. Note the majority limb
flips between the narrowest reading and every wider one, which is itself the
argument for keying on shape.

3. The citation: de-lined to the repo's own anchor grammar

packages/client/src/index.ts:310 →
packages/client/src/index.ts#PaginatedResult.

The card's triage recommended de-lining over repointing, and the rot record
justifies it: the citation read :310 when written, the #15094 census found the
declaration at :392, triage read :390 the same day. On this base
grep -n 'PaginatedResult' packages/client/src/index.ts reports the declaration
at :390 — a cross-file line citation that moved twice inside one day.

Does a gate admit an anchor in a scripts/ header? No — checked, not
assumed. check-adr-symbol-anchors.mjs registers exactly one corpus,
defineCorpus({ id: 'adr', docRoots: [ADR_DIR], docPattern: /\.md$/ }) with
ADR_DIR = 'docs/adr'; grep -rn defineCorpus scripts/ finds no other
registration. So scripts/** is outside every symbol-anchor corpus, and nothing
resolves this anchor for you.

That is an argument about checking, not about spelling. The form used is the
repo's own authoritative grammar, scripts/symbol-anchors.mjs#ANCHOR_GRAMMAR,
whose last entry ends with this sentence, verbatim:

⛔ A LINE NUMBER IS NOT AN ANCHOR FORM.

(that entry leads with a placeholder path — DIR/FILE.ts:4901 with the
angle-bracket placeholders spelled as words here, since GitHub's body sanitizer
eats them; the same sentence appears again in that file's own prose header.)

A symbol name stays checkable by grep where a number does not, and the anchor is
forward-compatible the day a scripts/** corpus is registered. The header states
all of this beside the citation, including that nothing resolves it today.

⚠️ Declared deviation. The dispatch's literal fallback for "no gate admits
anchors in scripts/" was the current line number with a fragility note. This
PR de-lines instead, following the card's own alternative and triage's ⭐
recommendation, because a repointed number is the same defect with a fresher
value — triage's words: ⛔ "Repointing :310 → :390 closes this card for about
a day." Say the word and I will carry the number instead.

A second stale citation in the same sentence, fixed in the same edit

Three lines below, the same bullet cited content/docs/api/client-sdk.mdx:659
for the data?.records.map(...) sample. It is stale too:
grep -n 'records.map' content/docs/api/client-sdk.mdx puts it at :808;
:659 is now inside an unrelated VALIDATION_FAILED error-handling block. It is
now a file-level anchor, content/docs/api/client-sdk.mdx, with the code text
already quoted beside it (which is what makes it greppable).

This is the bounded in-place exemption, declared rather than slipped in: same
defect class as the card's, mechanically correct form pinned by the repo's own
anchor grammar, same file, no other claim on it, and no new verification surface
— all four conditions hold, so it is named here with its evidence rather than
filed as a card nobody would dispatch.

4. Proof the gate is byte-identical (⛔ no detector or population change)

Captured before the edit and again after, exit codes taken before any pipe:

node scripts/check-react-page-adapter-contract.mjs               → EXIT=0 (before and after)
node scripts/check-react-page-adapter-contract.mjs --self-test   → EXIT=0 (before and after)
diff before.txt after.txt                                        → EXIT=0 (no output)
diff before-selftest.txt after-selftest.txt                      → EXIT=0 (no output)

The two verdict lines, unchanged:

✓ check-react-page-adapter-contract: 21 app-showcase page module(s) + 1 content/docs react-page sample(s) (from 396 doc file(s), 1958 fenced block(s)) — every adapter query option is $-prefixed, every row read is off `data`, and no find() result is tested for array-ness.

✓ check-react-page-adapter-contract --self-test: 51 assertions — all THREE detectors observed FIRING and observed silent, the `Array.isArray` limb pinned on the three lines #13969 deleted (the docs one on the very string `recordsReads` is pinned to IGNORE), the selector observed refusing the engine.find / useQuery / webhook shapes it must not fabricate on, and an empty sweep of EITHER half observed failing the census.

The diff is comments only. The dispatch's non-comment probe

git diff -U0 origin/main -- scripts/check-react-page-adapter-contract.mjs \
  | grep -E '^[-+]' | grep -vE '^(\+\+\+|---)' | grep -vE '^[-+]\s*(//|\*|/\*)'

prints nothing — 0 bytes.

5. Gates — all 29 derived commands run at HEAD 0b6f4bd1d

Derived with node scripts/pm/dispatch-gates.mjs --changed --commands --repo objectstack-ai/objectstack
(exit 0; the tool took the change set from git itself, 1 path). Every command
run, exit code captured before any pipe:

node scripts/pm/check-governed-merges.mjs --test scripts/check-react-page-adapter-contract.mjs,
run on the final file list, exit 0:

governed-surface predicate: 0 of 1 path(s) hit the register (5 surfaces, repo-agnostic).
  ✅  NOT governed — ordinary queue landing applies to a PR with exactly this file list.

⊘ NOT MEASURED, by name

22 of 29 exit 0. The other 7 never entered a gate body: six exit 3 with
their own words, PREREQUISITE NOT MET, and one exits 1 on
ERR_MODULE_NOT_FOUND at import time. This worktree has no node_modules, so
these are neither failures nor clearances — CI measures them:

• node packages/lint/scripts/check-reference-carrier-shape.mjs — ⊘ NOT MEASURED: PREREQUISITE NOT MET — the dependency typescript is not installed
• node packages/lint/scripts/check-reference-carrier-shape.mjs --self-test — ⊘ NOT MEASURED: PREREQUISITE NOT MET — the dependency typescript is not installed
• node scripts/check-ci-filter-parity.mjs — ⊘ NOT MEASURED: PREREQUISITE NOT MET — the dependency yaml is not installed
• node scripts/check-closing-keyword-parity.mjs — ⊘ NOT MEASURED: PREREQUISITE NOT MET — the dependency yaml is not installed
• node scripts/check-closing-keyword-parity.mjs --self-test — ⊘ NOT MEASURED: PREREQUISITE NOT MET — the dependency yaml is not installed
• node scripts/check-comment-mask-corpus.mjs — ⊘ NOT MEASURED: ERR_MODULE_NOT_FOUND — @typescript-eslint/parser (never entered the gate body)
• pnpm check:driver-memory-census — ⊘ NOT MEASURED: PREREQUISITE NOT MET — the dependency typescript is not installed

Plus the three families dispatch-gates itself reports as taking a value from
the workflow (no value outside a CI run):
check-cross-package-test-inputs.mjs --union-into "$RUNNER_TEMP/…",
check-shard-attestation.mjs --shard a matrix variable, and
check-test-completeness.mjs "$RUNNER_TEMP/test-core.log".

6. Filed, not fixed here

#15765 — no symbol-anchor corpus covers scripts/**, so the 27 cross-file
path:NNN citations across 14 scripts/**/*.mjs files rot unchecked. This
card's two are the worked example; the general repair is a defineCorpus call
plus a migration, and it needs a measurement this card does not owe (whether the
extractor reads // comment blocks cleanly). Filed bare with finding,
no assignee.

7. Changeset

skip-changeset. AGENTS.md, Post-Task Checklist §3: ⛔ "never skip-changeset:
that label is for a diff that publishes nothing from any released package." This
diff is comment lines in one repo-root tooling script under scripts/, which no
package publishes.

8. Channel switch, declared

REST writes are unavailable in this seat. POST /repos/objectstack-ai/objectstack/issues
was refused before it left the box (tool-policy denial, not a GitHub status), while
repo-scoped REST reads answer 200 all session and git push works. The GitHub
search endpoint answers 403 with its own words: This GitHub API path is not available: sessions are bound to their configured repositories. So this PR, the
report comment and #15765 were written through MCP, and the one dedup search
before filing #15765 was a single targeted search_issues. MCP call count for
the whole run is in the os-dev-report comment on #15599.

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