- StepFun voice selection: CharacterDesigner picks a preset voiceId from the
32-entry catalog (zero extra LLM call); pickStepfunVoiceId remains as fallback.
- Prebaked homepage cards enriched with stepfunVoiceId (147 characters, gemini model).
- /api/tts-provider endpoint + client probe: skip the ~220KB Xiaomi reference
audio when the server runs StepFun (saves Fast Origin Transfer bandwidth).
- Server-side resolveVoice normalization: re-provisions on provider mismatch.
- Removed hardcoded 1.2x speech playback speed (was for slow MiMo voice).
- Hardened voice-provider validation per PR-agent review.
Xiaomi path prompt is byte-identical to history (prompt-cache-preserving).
yuanzonghao
ba9f9c1342