Worldtree-dev's --reasoning-format gemma suggestion isn't supported in the deployed llama.cpp build (accepts only none|deepseek|deepseek-legacy). Falling back to deepseek, which also populates reasoning_content — the field Worldtree's GemmaProvider fallback path checks. Verified via test inference: 608 reasoning_content deltas + 199 content deltas + 0 raw <|channel> marker leaks.