docs: federation: numbers without constraint, names by a decision

What the maintainer answered to the questions the design had left:

* Every quantity of the design is a number of the policy, in one
  table with what the design recommends (the times, the limits, how
  much a remake's base may lack, how long the root's node lets a claim
  wait). The genesis policy sets each, and a decision changes any to
  any value: nothing constrains them. The fractions aren't numbers.
* While a user is out, the voters free its names or give them to
  another by a decision, whatever `gone` says; a policy without `gone`
  has the names wait until a vouch or a decision.
* Nobody is put out by a vote, said where unvouching is, with what
  there is against a user that harms within the rules.
* A node keeps the epochs it left for as long as its operator says,
  `archiveRetention` at least, and says which; so a node coming back,
  or one joining from the genesis root, walks every epoch where an
  archive is within reach, and shows where the walk doesn't end at its
  peers' epoch.
* Settled, and listed so: who votes, from where an unvouch undoes,
  gone for good, first keys by a decision, what the root holds
  unsigned. Two questions remain: whether the fractions are numbers
  too, and whether a decision gives a user name with its namespace.

future-work.md: an archive of every epoch.

0 files changed, 0 insertions, 0 deletions