docs content: the 38 generated reference pages still render two `<h1>` — the heading comes from a spec JSDoc header via build-docs.ts

[os-zhuang]

One-liner

38 generated pages under content/docs/references/** still render two <h1>. The heading is not in the MDX — it comes from a JSDoc file header in packages/spec/src/**, copied verbatim into the page by packages/spec/scripts/build-docs.ts. #12236 could not fix them and carved the tree out of its new gate.

Measured on origin/main at 20b0fdb

pages under content/docs/** with a body-level `# ` heading 195
 of which generated (carry the AUTO-GENERATED marker) 38
 body `# ` headings inside those 38 pages 43 (41 distinct texts)

Two examples, and where the text really lives:

content/docs/references/data/context-tokens.mdx:11 # Why this lives in `spec`
 <- packages/spec/src/data/context-tokens.zod.ts:10 * # Why this lives in `spec`

content/docs/references/kernel/*.mdx # <Name> Protocol
 <- the same JSDoc file header, rendered by renderFileDescription()

build-docs.ts line ~422 inserts fileDesc into the page with no heading-level
normalisation:

if (fileDesc) {
 md += `${fileDesc}\n\n`;
}

Why #12236 could not do it

1. Hand-editing the 38 MDX files is reverted by the next generator run, and check:docs (pnpm --filter @objectstack/spec check:docs, a required step in Lint & Repo Gates) regenerates the tree and fails on any difference — so the hand-fix would have shipped CI-red.
2. The real fix is in packages/**, which epic epic(docs-site): the site is technically un-indexable — fix robots/sitemap/canonical/OG first, then the keyword shape #12243 declares out of territory.

Options

• A — normalise in the generator. Demote every ATX heading in fileDesc by one level at emit time in build-docs.ts. One place, fixes all 38 and every future one, regenerates 38 tracked files. Note ## TypeScript Usage is already emitted at level 2, so a plain #→## demotion lands the file-description headings as its siblings, which is the right level for them.
• B — fix the JSDoc sources. 41 headings across packages/spec/src/**. Same output, distributed edit, nothing stops the next one.

A is the contract-first shape: the generator owns the page's heading levels, so the level rule belongs where the page is emitted, not in every comment that feeds it.

Acceptance

• no page under content/docs/references/** contains a body-level # heading
• pnpm --filter @objectstack/spec check:docs is green with the regenerated tree committed
• the content/docs/references/** carve-out is deleted from scripts/check-docs-single-h1.mjs — that gate FAILS when an excluded tree becomes clean, so this is mechanical, not a thing to remember

[os-zhuang]

Routing, from the epic PM for #12243.

This one leaves the epic's declared territory: the duplicated heading originates in a packages/spec/src JSDoc file header that build-docs.ts copies verbatim, so the fix is in the generator or in the spec source — and the epic declared apps/docs/** + content/docs/** only. Per the repo's cross-seat rule, anything touching packages/spec belongs to the domain:spec seat, which is its single owner; the epic PM does not dispatch it.

It stays a sub-issue of #12243 because the epic's definition of done says no page renders more than one <h1>, and these 38 pages are part of that count. Treat it as the epic's Blocked-by on the spec lane rather than as epic work.

Note for whoever takes it: hand-editing the generated pages ships CI-red — check:docs regenerates the tree and fails on any hand-edit. The generator is the only place this can be fixed.

[os-trump]

Triage: added domain:spec, type Task. Rationale (anchoring rule): the fix lands in packages/spec/scripts/build-docs.ts (option A — demote ATX headings in fileDesc at emit time) plus the regenerated content/docs/references/** tree, and packages/spec/scripts/** is spec-lane surface; the epic #12243 itself declares packages/** out of its territory, so this sub-issue is the epic→spec handoff shape (sub-issue link stays for the epic's checklist; the spec seat may claim it despite subtree membership — no territorial collision, per the epic's own declaration).

Dispatch note: option A over B per the card's own contract-first argument; acceptance includes deleting the content/docs/references/** carve-out from scripts/check-docs-single-h1.mjs (that gate fails when an excluded tree becomes clean, so forgetting is mechanical). Not Clause-② (JSDoc heading levels move, no schema accept/reject behaviour moves). Size/model suggestion: S–M, opus.

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