Demo: record a walkthrough video

[nhenin]

Record a walkthrough of the live demo, so the mechanism can be shown to people who will never run a devnet.

The dashboard already tells the story on its own; the video should follow it rather than narrate slides.

• The base — one block round carries two blocks: a small ranking block applied immediately, and an endorser block ~133× bigger that only lands once the pools certify it
• The two prices — the urgent quote and the patient quote, side by side, each moving against its own block's fullness
• Drive the demand — flip a scenario and watch the feeders change within a block or two: rush hour pushing the fast lane up, bulk night filling the patient one
• A lane fills, its price answers — the urgent lane goes BLOCKED · SPACE FULL, and the next quote steps up
• The bid is a ceiling — force a price squeeze and watch transactions priced out as the quote overtakes their bid
• Certification — the patient lane's payments wait for the committee; silence the votes and watch the whole lane freeze, then heal when they return
• Min fill — a trickle below half a ranking block pools instead of forging: pooling — below min fill

Practical: capture at 1440px wide, keep it under ten minutes, and cut the waiting — a block round is ~20 s and nobody wants to watch it in real time.