Root cause of "weather/search do nothing": the engine forced TEXT tool-calling
for all <=7B models, but qwen2.5:3b emits clean NATIVE tool calls and fails at
the text format — so it just narrated ("부산 날씨는 맑습니다") and never called
getWeather/webSearch/controlBrowser. Use native tool-calling for tool-capable
small families (qwen2.5/qwen3/llama3.x/mistral); native still auto-falls back
to text on HTTP 400, so non-tool models (gemma) are unaffected.
Also launch Chrome with --test-type (removes the "--no-sandbox unsupported
flag" infobar) and disable the Translate feature/popup.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>