fix(migrations): restore richText content wiped by varchar->jsonb USING NULL conversions

Migrations 0020/0021/0022 converted textarea columns to jsonb with USING NULL,
discarding all existing content. Restore values from the 2026-06-10 pre-webp
backup, wrapped as Lexical editor state. Idempotent (IS NULL guard). Three
birthday package items created after the backup got new placeholder copy.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

scripts/restore-richtext-from-backup.mjs

@@ -0,0 +1,149 @@
+// One-off recovery: migrations 0020/0021/0022 converted textarea columns to jsonb
+// with `USING NULL`, wiping content. This script extracts the original plain-text
+// values from the pre-wipe pg_dump and emits UPDATE statements that re-fill the
+// columns as Lexical editor-state JSON. Guarded with `IS NULL` so re-running never
+// overwrites content editors have re-entered since.
+//
+// Usage: node scripts/restore-richtext-from-backup.mjs <dump.sql> <out.sql>
+
+import { readFileSync, writeFileSync } from 'node:fs'
+
+const [dumpPath, outPath] = process.argv.slice(2)
+if (!dumpPath || !outPath) {
+  console.error('Usage: node restore-richtext-from-backup.mjs <dump.sql> <out.sql>')
+  process.exit(1)
+}
+
+// (table, columns to restore). Key column is always `id`.
+const TARGETS = {
+  dinosaur_page: ['hero_description', 'activities_description'],
+  dyvolis_page: ['hero_description'],
+  tickets_page: ['benefits_footnote'],
+  home_page: ['hero_subtitle', 'birthday_intro_text', 'news_subtitle'],
+  group_visits_page: ['hero_description', 'feature_text', 'bottom_text', 'price_description'],
+  legal_pages: ['privacy_content', 'terms_content', 'offer_content', 'data_processing_content'],
+  locations: ['short_desc'],
+  home_page_why_parents_items: ['description'],
+  home_page_hero_slides: ['subtitle'],
+  home_page_faq_items: ['answer'],
+  dinosaur_page_activities: ['description'],
+  dinosaur_page_why_visit_items: ['description'],
+  birthday_page_package_items: ['description'],
+  birthday_page_why_items: ['description'],
+  dyvolis_page_why_visit_items: ['description'],
+  tickets_page_combo_cards: ['description'],
+  locations_why_visit_items: ['description'],
+}
+
+function unescapeCopyField(raw) {
+  if (raw === '\\N') return null
+  let out = ''
+  for (let i = 0; i < raw.length; i++) {
+    if (raw[i] !== '\\') {
+      out += raw[i]
+      continue
+    }
+    const c = raw[++i]
+    if (c === 'n') out += '\n'
+    else if (c === 't') out += '\t'
+    else if (c === 'r') out += '\r'
+    else if (c === '\\') out += '\\'
+    else if (c === 'b') out += '\b'
+    else if (c === 'f') out += '\f'
+    else if (c === 'v') out += '\v'
+    else out += c
+  }
+  return out
+}
+
+function parseCopyBlocks(sqlText) {
+  const lines = sqlText.split('\n')
+  const tables = {}
+  for (let i = 0; i < lines.length; i++) {
+    const m = lines[i].match(/^COPY public\.(\w+) \(([^)]+)\) FROM stdin;$/)
+    if (!m) continue
+    const [, table, colsRaw] = m
+    if (!(table in TARGETS)) continue
+    const cols = colsRaw.split(', ').map((c) => c.replace(/"/g, ''))
+    const rows = []
+    for (i++; i < lines.length && lines[i] !== '\\.'; i++) {
+      const fields = lines[i].split('\t').map(unescapeCopyField)
+      rows.push(Object.fromEntries(cols.map((c, j) => [c, fields[j]])))
+    }
+    tables[table] = rows
+  }
+  return tables
+}
+
+function textToLexical(text) {
+  const paragraphs = text.split('\n').map((line) => ({
+    type: 'paragraph',
+    version: 1,
+    direction: 'ltr',
+    format: '',
+    indent: 0,
+    textFormat: 0,
+    textStyle: '',
+    children:
+      line === ''
+        ? []
+        : [
+            {
+              type: 'text',
+              version: 1,
+              detail: 0,
+              format: 0,
+              mode: 'normal',
+              style: '',
+              text: line,
+            },
+          ],
+  }))
+  return {
+    root: {
+      type: 'root',
+      version: 1,
+      direction: 'ltr',
+      format: '',
+      indent: 0,
+      children: paragraphs,
+    },
+  }
+}
+
+const sqlQuote = (s) => `'${s.replace(/'/g, "''")}'`
+
+const dump = readFileSync(dumpPath, 'utf8')
+const tables = parseCopyBlocks(dump)
+
+const out = [
+  '-- Restore richText content wiped by migrations 0020/0021/0022 (ALTER TYPE ... USING NULL).',
+  '-- Values extracted from pre-webp-migration-20260610_135729.sql.gz and wrapped as Lexical JSON.',
+  '-- Idempotent: only fills columns that are still NULL.',
+  '',
+]
+let count = 0
+
+for (const [table, cols] of Object.entries(TARGETS)) {
+  const rows = tables[table]
+  if (!rows) {
+    console.warn(`WARN: table ${table} not found in dump`)
+    continue
+  }
+  out.push(`-- ── ${table} ${'─'.repeat(Math.max(2, 60 - table.length))}`)
+  for (const row of rows) {
+    for (const col of cols) {
+      const text = row[col]
+      if (text == null || text.trim() === '') continue
+      const json = JSON.stringify(textToLexical(text))
+      out.push(
+        `UPDATE "${table}" SET "${col}" = ${sqlQuote(json)}::jsonb WHERE "id" = ${sqlQuote(String(row.id))} AND "${col}" IS NULL;`
+      )
+      count++
+    }
+  }
+  out.push('')
+}
+
+writeFileSync(outPath, out.join('\n'))
+console.log(`Wrote ${count} UPDATE statements to ${outPath}`)