- /turn accepts optional regenerate+style (serious/gentle/detailed/professional);
regenerate short-circuits before rememberTraineeReply — no round advance,
no trainee reply write, no scoring impact; only same-round coachHint evidence
is overwritten
- Style instruction injected into existing LLM turn prompt; LLM missing/failed
returns original hint with explicit message (no fake data)
- Mobile practice page renders 再严肃/再温柔/更细致/更专业 pills under coach
hints; success replaces text with a style note, failure toasts and keeps
original; old clients unaffected (fields appended)