DeepSeek V4 (v4-pro / v4-flash and reasoning-capable v3.x variants) reject follow-up
requests with 'The reasoning content in the thinking mode must be passed back to the
API' whenever a prior assistant tool-call turn lacks reasoning_content. The compat
flag that triggers placeholder injection was scoped to Kimi and OpenRouter-routed
reasoning models, so DeepSeek reached through api.deepseek.com, Deepinfra, Kilo,
NVIDIA NIM or Zenmux silently failed.
- Match DeepSeek family by provider, baseUrl, model id, or model name in
detectOpenAICompat (gated by model.reasoning).
- Recompute hasReasoningField after injecting the placeholder so the existing
'content === null && hasReasoningField -> ""' DeepSeek normalization actually
runs on tool-only assistant turns.
Fixes#883Fixes#810
can1357
784a457a88