fix(pm): let a SPELLINGS entry hold a list of segment arrays for multi-hint rows

[claude]

Fixes #14233

What

scripts/pm/bare-root-worklist.mjs's SPELLINGS self-test harness held exactly
one hint per entry, so a DECLARED-NARROWER row whose gate declares its
population as more than one glob could not record a spelling at all, and its
declaration went re-measured by nothing in this file. Five rows were in that
state: check:logger-receiver-detach's three SCAN_ROOTS rows (packages,
examples, apps), check:dual-build-cjs-loads SCAN_ROOT packages and
check:ratchet-remedy-authority SCRIPTS_DIR scripts.

This extends SPELLINGS so an entry's segments may hold either one hint (a
flat segment array — unchanged for the nine existing entries, kept readable) or
a LIST of segment arrays — the narrow remedy the card sketched. The pin loop
asks hintCovers and holds of the UNION of an entry's hints. Five multi-hint
(or, for examples, single-hint) entries were added, matching each gate's own
ROOT_DIR_WATCH_HINTS declaration exactly:

entry	hints	covered / root files
packages TypeScript source	packages/**/*.ts, packages/**/*.tsx, packages/**/*.mts	5240 / 5796
examples TypeScript source	examples/**/*.ts	206 / 243
apps TypeScript source	apps/**/*.ts, apps/**/*.tsx	29 / 41
dual-build manifests and configs	packages/**/package.json, packages/**/tsup.config.ts	94 / 5796
scripts top-level script files	scripts/*.mjs, scripts/*.mts	183 / 310

Each of the five DECLARED-NARROWER rows now carries spelling: naming its
entry, and each row's why prose is corrected — the check:ratchet-remedy-authority
row previously stated in as many words that "SPELLINGS holds ONE hint per entry
and this population needs one per extension"; that sentence is now false and is
rewritten to describe the new pin instead.

No verdict changes. No gate under scripts/check-*.mjs is edited — their
declarations are read, never written. This is not a new gate: the pin lives
entirely inside bare-root-worklist.mjs --self-test, which already ran on
every PR (lint.yml:766).

Decision recorded, not built

The triage's Zone 3 raised, as an option, a per-member LIVE assertion inside
the pin loop (so a union LIVE cannot let one dead hint hide behind a live
sibling — the exact partial-death shape the parent card described for
check:declared-population-live). Left out: the ruling's own words are "the
remedy is the narrow one the card sketches ... and nothing else," and a
per-member pin is a genuine addition beyond "ask holds of the union," not a
restatement of it. See open_questions in the report comment — every new
entry's hints were individually measured non-empty during this PR's own
verification (see Tests), so the gap is theoretical today, not a live defect.

Tests

• node scripts/pm/bare-root-worklist.mjs --self-test — green, 78 t()
  assertions execute at runtime (up from 58 on main: +4 per added entry × 5).
• Five red-proofs, one per added entry: each entry's declaration was
  temporarily edited to break LIVE, PRECISE, NARROWING or COMPLETE in turn,
  the self-test was run and shown to fail on exactly that entry, then reverted
  via git checkout HEAD -- scripts/pm/bare-root-worklist.mjs and reconfirmed
  clean (git diff HEAD empty) before the next mutation. See the report
  comment for each red line quoted.
• node scripts/pm/dispatch-gates.mjs --repo objectstack-ai/objectstack --commands scripts/pm/bare-root-worklist.mjs
  derived 14 commands; all ran green (one, check-test-completeness.mjs, is
  NOT MEASURED locally by design — it grades a saved turbo test log CI
  supplies).
• pnpm check:ratchet-remedy-authority, pnpm check:declared-population-live,
  node scripts/check-self-test-wired.mjs — all green.
• node scripts/check-nul-bytes.mjs — clean.
• Narrow ESLint on the one changed file — 0 errors, 0 warnings.

Full commands, exit codes and quoted verdict lines are in the report comment
on #14233. All gates above were re-run on the merged head (6cc887260,
origin/main merged in — no conflicts, bare-root-worklist.mjs untouched by
upstream).

Changeset

scripts/pm/**-only diff — no user-facing published change. No changeset
added; skip-changeset label applied (confirmed by reading the PR's labels
back after applying).

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Draft PR — not marking ready, CI convergence is for the PM to review.

Generated by Claude Code

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Generated by Claude Code