- de- and encoding of messages
- server listen and decode loop
- request channel state

- _fairly_ complete peer api
  - read & write channels, set_nick, set_topic, join & leave
- de- and encoding of messages and posts
- server listener, decode loop and request responses
- request channel state and posts for the last day

- basic db: save and load of posts
- encode and sign post types text, join and leave

  - new messages for open requests should be forwarded, etc.

  - new messages for open requests should be forwarded, etc. (TTL feature)

- roll and save a keypair
- encode posts:
  - delete
  - info
  - topic
- answer channel time range and channel state based on persisted data

- complete tests for full remote peer lifecycle
  - cleanup peer socket linkage
- flesh out `db:read` with time windows
- add request for remote channel listings
- only fetch posts for hashes we actually asked for
- add supervisor tree for db and listener
- add more tests for links/heads tracking
- keep track of requests limits and time windows