Mantella configuration and source

Inputs

• Exact Mantella version and installation type.
• Current config, prior config, logs, source revision, and desired behavior.
• LLM and TTS provider contract without exposing secrets.

Workflow

1. Back up the current config and redact credentials from reports.
2. Diff old and new schemas by key, section, default, type, and deprecation.
3. Preserve user values only where the new schema still supports them.
4. Keep prompt changes separate from transport, TTS, interruption, and Papyrus changes.
5. Validate config parsing and start the narrowest component possible.
6. For source edits, map the conversation lifecycle and cancellation/interruption paths before changing code.
7. Test start, normal response, interruption, timeout, TTS failure, provider failure, and shutdown.
8. Document any setting that must be re-entered manually.