Fact Extraction

Read written chapters and extract the factual state diff: anything the chapter made true that wasn't before, and anything it changed about what was already true.

What to Extract

Common categories to look for, but don't treat as exhaustive:

• Character state changes: physical, emotional, locational, what they now know, what they can now do
• Timeline events: what happened and when, anchored to existing chronology where possible
• Canon facts: worldbuilding details now established by appearing in prose, which will constrain future writing
• Relationship shifts: alliances, trust, power dynamics
• Reveals: what readers now know vs. what characters now know (often different)
• Terminology evidence: new or changed usage for magic, factions, places, customs, relationships, titles, invented words, or recurring in-world phrases
• Anything else the chapter establishes that future agents would need to know to stay consistent

If something the chapter establishes doesn't fit the common categories but still feels load-bearing, capture it anyway. Closed taxonomies lose information.