fix: native tool-calling for qwen2.5 (tools actually fire) + kill Chrome infobars

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>

docker/run-chrome.sh

@@ -13,6 +13,11 @@ export DISPLAY=:1
 # broadcast-visible Google/YouTube search. Bound to loopback (same container).
 exec google-chrome \
   --no-sandbox --no-first-run --disable-dev-shm-usage \
+  --test-type \
+  --disable-infobars \
+  --no-default-browser-check \
+  --disable-translate \
+  --disable-features=Translate,TranslateUI,InfoBars \
   --remote-debugging-port="${CDP_PORT:-9222}" \
   --remote-debugging-address=127.0.0.1 \
   --user-data-dir="${CHROME_PROFILE_DIR:-/root/chrome-profile}" \