Function renderPageBody

bin/gstack-memory-ingest.ts:845–877

* Build the markdown body with YAML frontmatter (title/type/tags) injected. * * Two cases: * - Page body already starts with `---\n` (transcripts) — inject into the * existing frontmatter block before its close fence so gbrain's frontmatter * parser picks up the fields alongside any sess

(page: PageRecord)

 * source of truth and gbrain rejects mismatches.
 */
function renderPageBody(page: PageRecord): string {
  let body = page.body;
  if (body.startsWith("---\n")) {
    const end = body.indexOf("\n---", 4);
    if (end > 0) {
      const inject = [
        `title: ${JSON.stringify(page.title)}`,
        `type: ${page.type}`,
        `tags:`,
        ...page.tags.map((t) => `  - ${t}`),
      ].join("\n");
      body = body.slice(0, end) + "\n" + inject + body.slice(end);
    }
  } else {
    body = [
      "---",
      `title: ${JSON.stringify(page.title)}`,
      `type: ${page.type}`,
      `tags: [${page.tags.map((t) => JSON.stringify(t)).join(", ")}]`,
      "---",
      "",
      body,
    ].join("\n");
  }
  // Strip NUL bytes — Postgres rejects 0x00 in UTF-8 text columns. Some Claude
  // Code transcripts contain NUL inside user-pasted content or tool output, and
  // surfacing those as `internal_error: invalid byte sequence` from the brain
  // is unhelpful when we can sanitize at write time. Originally landed in v1.32.0.0
  // (PR #1411) on the per-file `gbrain put` path; moved here so all staged
  // pages still get the same sanitization.
  body = body.replace(/\x00/g, "");
  return body;
}

interface PreparedPage {
  /** Page slug (path-shaped, e.g. "transcripts/claude-code/foo"). */