Replace all `pformat()` calls with `ppfmt()` from
`tractor.devx.pformat` and drop the `pprint`
import. Guard `status_msg.brokerd_msg = msg` with
an `if not` check to avoid clobbering a value
already set by earlier processing.
Also,
- Add `!r` to `broker` in a couple log msgs.
(this commit msg was generated in some part by [`claude-code`][claude-code-gh])
[claude-code-gh]: https://github.com/anthropics/claude-code
Gud Boi
9f7c38a37b