Fix up the DM demo

[will-hanlen]

there is a branch called dm with semi-finished work.

[will-hanlen]

current state:

• works, but UI still flashes messages as from ~zod because bowl in incorrect

other than that, works.

but we probably want to move to a different architecture:

• aggregator
• publisher
• subscriber.

[hanfel-dovned]

Gonna close this one since it's a bit redundant with #14