AUM0 v7: anyone can be a manager

On Wall Street a separately managed account is a rich man's product.
Below a six figure minimum you are pooled into a fund and handled in
bulk, and the model portfolio business above it moves trillions on
custody, paperwork and human hands. Here pooling was never needed,
every account was already separate, so the only thing missing was the
managers.

This edition adds them. Anyone can be one.

publish(), follow(), revise()

An author publishes an allocation, fixed or gliding, under their own
address, with a royalty carved in stone at publication and capped at
half.

Following is one signature. No deposit, no transfer, no custody:
the follower's account is simply measured against the policy as it
stands, and every worker, wall and desk serves it unchanged.

One revision moves the law of every follower at the same instant,
and the robots go to work across the whole world.

The royalty is collected only out of bounties actually paid for
work actually done. A worker who fills badly earns nothing, so the
author earns nothing. Money still moves to exactly three places:
the owner, the worker, and the author the follower agreed to on
the day they signed.

Leaving is one signature of your own, and a retired policy takes no
new followers. The author steers weights and collects; they can never
touch a coin of a follower's.

On the live chain

Against the real pools: a manager published a sixty forty at a ten
percent royalty, a stranger followed it, and a worker carried the
follower from 19000 bps of drift to 42. The author collected $11.97
for steering and the worker kept $107.79 for working.

And on mainnet, on a Sunday: policy #1 went up at a ten percent
royalty, a wallet followed it with one signature, and when the author
revised the weights once, the follower's drift moved from 11770 to
7778 bps the same second, with no trade and no notice. The employee
then sold the follower onto the new law through the real pools and the
author's royalties arrived out of the bounties it paid, on chain,
while the one sleeping stock waits for its feed to wake on Monday.

Unchanged

Your stocks never leave your wallet. The contract holds nothing.

Every fill is judged against the official feed, and a worker's pay
is docked dollar for dollar by whatever the fill cost the wallet.

No owner, no admin, no upgrade path. Zero fees, at any size,
with a minimum of zero.

Live

World edition   0x356B8b6ed5CBAaa5879945dACb7Dce6408a679b2
Chain           Hood Chain (id 4663)
Assets          USDG plus twenty six, stocks through treasuries
Web             https://aumzero.com

Eight unit tests on the managers, one more against the live chain.