...u diese Keys, keine extra):
{
  "block_id": "...",
  "has_ai_mentioned": true,
  "ai_mentions": [{"role":"USER|ASSISTANT","quote":"..."}],
  "progress_markers": [{"role":"USER|ASSISTANT","type":"...","quote":"..."}],
  "distress_markers": [{"role":"USER|ASSISTANT","type":"...","quote":"..."}],
  "topic_keywords": ["...", "..."],
  "notes": "kurz, deutsch"
}

Regeln (wichtig):
- Zitate ('q...