BLDer DAO can start PSMs for more reference stable interchain assets

[dckc]

What is the Problem Being Solved?

After bootstrap, the BLDer DAO should be able to select more reference stable tokens and start PSM contracts for them.

Description of the Design

core-eval ("big hammer") proposal to

• add an interchain asset to the VBANK
• start a PSM instance for that asset, with debt limit 0

Security Considerations

Should the econ committee be able to do this?
p.s. no

Test Plan

end-to-end test, ideally in a loadgen style automated harness

cc @dtribble @rowgraus @Tartuffo

[dckc]

Should the econ committee be able to do this?

no, per @dtribble in a recent meeting

[dckc]

Added a PSM for DAI:

$ agd query vstorage children published.psm.IST
children:
- AUSD
- DAI

$ agoric follow :published.agoricNames.brand
[
  [
    "BLD",
    slot(0,"Alleged: BLD brand"),
  ],
  [
    "IST",
    slot(1,"Alleged: IST brand"),
  ],
  [
    "AUSD",
    slot(2,"Alleged: AUSD brand"),
  ],
  [
    "DAI",
    slot(3,"Alleged: DAI brand"),
  ],
]

IOU a PR and some other details.

77a33aa

[dckc]

blocked by #6337

[dckc]

#6337 is done now.