Root cause of persistent Tomcat cat favicon: public/favicon.ico was the
Tomcat default (21630 bytes), shipped by every build; browsers prefer
/favicon.ico over the correct favicon.png. Regenerate favicon.ico from the
KINTEX wordmark PNG (multi-size 16/32/48/64) and bump cache-bust to v3.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
