[chore](trx-server): update default ports to 4530/4531

Change JSON TCP listener default from 4532 to 4530 and audio
streaming default from 4533 to 4531.

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
Signed-off-by: Stan Grams <stanislawgrams@gmail.com>

trx-server.toml.example

@@ -58,7 +58,7 @@ enabled = true
 listen = "127.0.0.1"
 
 # TCP port to listen on
-port = 4532
+port = 4530
 
 [listen.auth]
 # Authentication tokens (empty = no auth required)