Add maintained configuration examples

docs/config.md

@@ -34,6 +34,7 @@ routes:
 
 `sources` and `sinks` must each contain at least one entry. `routes` is optional.
 When `routes` is omitted, every configured sink receives every event kind.
+Maintained copyable configs are available under [`examples/`](../examples/).
 
 ## Production-Oriented Shape
 
@@ -63,7 +64,7 @@ sinks:
     params:
       uri: postgres://weatherdb:5432/weatherdb?sslmode=disable
       username: weatherdb
-      password: "<set outside source control>"
+      password: <database_password>
       prune: 3d
 
 routes:
@@ -213,3 +214,9 @@ Postgres `prune` must be a string duration.
 The config file is read directly from disk and has no built-in secret expansion.
 Keep real credentials out of repository-tracked configs. Use deployment tooling
 to render `config.yml` with the needed secret values before starting the daemon.
+
+## Maintained Examples
+
+- [Minimal stdout config](../examples/config.minimal.yml)
+- [NATS publishing config](../examples/config.nats.yml)
+- [Postgres persistence config](../examples/config.postgres.yml)