GateFox 1.8.9

• A provider can set cacheMissLimit (3 to 12, default 3) to allow more measured
  large cache misses in a row before the five-minute cache-safety stop. DeepSeek on
  OpenRouter builds its prefix cache asynchronously, so a fresh Flash worker could be
  paused after three cold requests although its cache was still warming. Unknown usage
  and refusals keep the two-miss limit, and other providers are unchanged.