TTS engine dropdown in the generation panel lists only raw model names (e.g., Kokoro 82M, Qwen CustomVoice) with no descriptions, tooltips, or guidance on what each engine does or which voice profiles it supports.

When a user selects an incompatible engine for their voice profile, the app throws a "generation failed" notification with no explanation of why it failed or how to fix it.

Steps to Reproduce

Create a voice profile using a built-in voice description
Open the generation panel and expand the TTS engine dropdown
Select an engine incompatible with the voice profile (e.g., Qwen CustomVoice on a Kokoro-based profile)
Attempt to generate observe generic failure with no diagnostic info