F6: extend embeddablePredicate to pages with body content but null text_content,
keyed on the text-node marker "type":"text" (not a bare "text": key, which
also matched math nodes' attrs.text and would leave math-only pages stuck
below 100%). Numerator and denominator share the predicate; tests assert the
compiled WHERE is byte-identical and a math-only doc is excluded.
F7: correct the start() JSDoc (both totals are the real page count).
F8: nextReindexPollInterval reuses isReindexComplete.
F9: getMasked reads progress first and skips the two COUNTs while a reindex is active.
F10: pre-seed the progress entry with a short 45s TTL so a deduped enqueue's
phantom "0 of N" expires quickly instead of sticking for the 1h TTL.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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