Running tranquil with `just run-dev` using `pds.test` seems to be broken due to a recent change that blocks requests to private ips. Inside the compose network `pds.test` resolves to the traefik container's private IP. So it can't make requests to stuff like `https://pds.test/oauth-client-metadata.json` or the local plc.
Introduces a new flag, default off, that allows connecting to private IPs, set to true for the dev compose.
1. Set the max connections to 20, I frequently see
db-1 | 2026-08-23 08:57:02.784 UTC [12641] FATAL: sorry, too many clients already
2. Add a wildcard route in Traefik to serve DID documents locally.
3. Expose the PLC port locally so I can point an app at `http://localhost:2582` and be able to do full OAuth flows.