reason: Frontend JSP/CSS presentation conventions and checklist for authenticated UI work.


reason: JSP fragment and static asset placement constraints.


reason: Shared header/sidebar fragment rules, role-conditioned navigation, and Simplified Chinese copy requirements.


reason: UI quality checks for JSP/CSS layout, accessibility basics, and visual consistency.


reason: Servlet/JSP/Tomcat architecture context for the encoding filter change.


reason: Layer-boundary and Maven verification requirements for backend-adjacent changes.


reason: Original project stack and presentation-layer requirements.