docs: vstorage reference; chainStorage publishing guide

[dckc]

closes #947

please excuse incremental work toward...

• https://github.com/Agoric/documentation/issues/945

turning whitespace off in the diff should help.

subsumes:

• 1015

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[dckc]

vstorage reference research notes

I'm about to close (and maybe delete) https://github.com/Agoric/agoric-sdk/discussions/9115 , but some of it didn't make it into the PR, so let's keep it here...

@gibson042 wrote:

Yeah, I think you've pretty much got it, although it's worth noting that everything except highPrioritySenders (and maybe that as well) predates published, which I introduced to avoid collisions at the top level. Details that I know about:

• activityhash is a SwingSet concept; it is modified by emitCrankHashes after every delivery.
• For highPrioritySenders, the rubber meets the road in routeAction (which pushes wallent spend actions from such addresses into a distinct comsic-swingset inbound queue that gets drained before updating timers and processing non-priority actions).

I'm not aware of docs on any of them, nor even which are actively in use.

[Chris-Hibbert]

The preview seems broken. I find it easier to review with that open. Would you repair?

[dckc]

The preview seems broken.

oops! broken link. it's rebuilding now.