fix(tooling): derive QUICK_REFERENCE's Node/pnpm floor as full version

[os-warren]

Fixes#6313

What

scripts/__tests__/quick-reference-current-release-4143.test.ts and the sync
generator scripts/sync-quick-reference-release.mjs both derived the Node/pnpm
version floors with match(/(\d+)/)?.[1] — keeping only the leading integer
group. Against root engines.node: ">=22.11" (objectui#5306 / PR #6311) that
produced a floor of 22, silently discarding the .11, so QUICK_REFERENCE.md's
Node.js row read exactly ≥ 22 and passed a pin whose entire premise is
disagreeing with its own cited anchor.

Per the triage ruling (disposition 1, closed — dispositions 2/3 not re-argued):

1. scripts/__tests__/quick-reference-current-release-4143.test.ts — added a
   versionFloor() helper (strip the comparator, keep the rest of the string
   whole) and switched the Node forward assertion, the pnpm forward assertion, and
   both add(...) calls in the reverse "no un-derived literal" sweep to use it.
2. scripts/sync-quick-reference-release.mjs — same versionFloor() helper
   and the same switch for nodeFloor/pnpmFloor in readAnchors(), so the
   script that actually writes the row derives the same value the gate checks.
3. QUICK_REFERENCE.md — regenerated via pnpm quick-reference:sync (not
   typed by hand); the Node.js row now reads ≥ 22.11.
4. Docblock — corrected the sentence claiming root engines.node "has been
   >=22" (false since PR fix(repo): declare the Node/pnpm floors the toolchain actually requires #6311 landed >=22.11 today) and added a paragraph
   recording the objectui#6313 drift for future readers.

Also added two regression tests, both deriving from the real manifest rather than
a hard-coded literal:

• a ≥ 22-shaped row is now rejected against the derived Node floor (the entire
  point of the card — this passed both the derivation's old AND a naive
  reimplementation's output would have to be checked against it, not assumed)
• a ≥ 220-shaped row is rejected too (objectui#4913's coarseness, now checked
  against the new derivation rather than just the old one)

No published package source changed; the changeset declares no release
(tooling/test/doc only).

Evidence

Before (old derivation, on the real manifest strings):

engines.node ">=22.11" -> match(/(\d+)/)?.[1] -> "22"
engines.pnpm ">=10" -> match(/(\d+)/)?.[1] -> "10"

After (new versionFloor, same real strings):

engines.node ">=22.11" -> versionFloor() -> "22.11"
engines.pnpm ">=10" -> versionFloor() -> "10" (unharmed today, fixed for when it isn't)

The card's core property — a ≥ 22 row now fails where it used to pass (code
fix committed, doc not yet regenerated — the doc still said ≥ 22 at this point):

 FAIL … > states the Node floor from root `engines.node`
AssertionError: QUICK_REFERENCE.md must state the Node floor as exactly "≥ 22.11"
to match engines.node ">=22.11": expected [ '≥22' ] to deeply equal [ '≥22.11' ]
FAIL … > contains only version literals this test derives from a manifest
Test Files 1 failed (1) / Tests 2 failed | 8 passed (10)

Ran pnpm quick-reference:sync (rewrote the row to ≥ 22.11) → re-ran → Test Files 2 passed (2) / Tests 22 passed (22) across both the gate and the
generator's own test file.

The ≥ 220 negative case, against the real committed file (plant → RED →
git checkout HEAD -- QUICK_REFERENCE.md under a trap … EXIT INT TERM →
restore verified by blob hash + empty git diff HEAD → GREEN):

sed -i 's/**Node.js:** ≥ 22.11/**Node.js:** ≥ 220/' QUICK_REFERENCE.md
FAIL … Tests 2 failed | 8 passed (10)
(trap restores)
git hash-object QUICK_REFERENCE.md == HEAD:QUICK_REFERENCE.md (4097a911b…)
git diff HEAD -- QUICK_REFERENCE.md == (empty)
Test Files 2 passed (2) / Tests 22 passed (22)

Checks run locally

• pnpm exec vitest run scripts/__tests__/quick-reference-current-release-4143.test.ts scripts/__tests__/sync-quick-reference-release.test.ts → 2 passed, 22 tests
• pnpm exec vitest run scripts/ (full scripts/ suite) → 79 files / 2281 tests passed
• pnpm quick-reference:check → in sync
• node scripts/check-changeset-presence.mjs → no source of a released package changed; changeset added
• node scripts/check-changeset-no-major.mjs → clean
• pnpm run type-check:scripts (covers scripts/__tests__/*.ts) → clean
• node scripts/check-type-check-coverage.mjs → 45/46 + 41/41, unaffected
• pnpm run lint:root (covers scripts/**) → 0 errors, 28 pre-existing warnings elsewhere, none in touched files
• node scripts/check-control-bytes.mjs → clean

CI (ci.yml) will run the full suite; leaving this in draft for the PM seat to
arm per dispatch order.

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