Embedding-Space/Penpal

AI Summary: The current logging setup, which uses Logfire for all messages, is problematic because Logfire's configuration happens too late in the application startup. This issue proposes implementing a basic plain text file logger (`Penpal.log`) for early application debugging and general messages, ideally capturing stdout/stderr. Logfire will continue to be used for specific framework instrumentation like FastAPI and PydanticAI.