808d6efa1a
Seven new timeline_* keys feeding the upcoming chrome: the header meta line (grouping label + events count), the event-pill provenance token, the ✉ sr-only label, the world-band "historisch" suffix, and the strip density caption — present in de/en/es with matching key sets, pinned by a new parity test. Refs #833 Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>