Map each panelist's position from a discussion video

Map the positions taken in this discussion.

Produce:
1. Per speaker: their position in one sentence, and the strongest reason they gave for it.
2. Agreed — what all speakers accepted, even implicitly.
3. Unresolved — where they still disagreed at the end, with each side's position.
4. Position changes — anyone who shifted during the discussion, with the moment it happened and what moved them.
5. Claims made without support, by whom.

Rules:
- *Attribute every position to a named speaker.* If the transcript does not identify who is talking, say so rather than guessing.
- Do not treat the last or loudest word as the conclusion. A discussion that ends unresolved is reported as unresolved.
- Where a speaker is steelmanning a view they do not hold, note it — that is easy to misread as their position.