- Remove InvestigationProgress card (eliminated misleading node-count progress)
- Replace with CurrentInvestigationCard showing question + 'why we are asking' + 'what we investigate' from active node context
- Add CurrentFocusCard explaining what the engine is investigating and why it matters
- Add InvestigationHistory section below answer form (chronological turn cards with collapsible details)
- Each history card captures: question, answer, engine response, timestamp
- Simplify UpdateAcknowledgement to single-line display without repeating user's answer
- Remove 'remaining count' text and any graph-derived progress numbers from user-facing UI
UI philosophy shift: form -> investigation workspace
robbond