print_startup_message ran its record through the proxy logger's filters, so
in JSON mode the required-migration SQL list and the policy list were
middle-truncated at MAX_STRING_LENGTH_STDOUT_LOG (4096 by default) with the
litellm_truncated marker, where the prints they replace showed them whole.
That cap bounds echoed request payloads; a startup message is operator text,
so the record now gets the uncapped processing of a DEBUG line: secret
redaction and base64 collapse still apply, the text cap does not.
Red on 41f92b745a, green here:
- tests/unit/test_logging.py: a listing longer than the cap comes out whole;
a credential in a startup message is still redacted
- tests/integration/configuration/test_json_logs_startup.py: a 60-policy
config boots with json_logs on and the policy listing record (9762 chars)
carries every policy with no truncation marker (4096 chars, marker, on
the unfixed tree)
2d7a2d6844
