DeepSeek keeps switching to Chinese? This tiny extension fixes it permanently

I've been using DeepSeek Chat for the past few weeks, and like many of you, I noticed the AI randomly switching to Chinese even when the conversation started in English. Sometimes it would happen every other response. The only workaround was to keep appending "Reply in English" to every message. So I built a lightweight browser extension that automatically appends a hidden instruction to every outgoing message. It works silently in the background. You type normally and send. Key details: Open-source (MIT Li