Rebuilt user dashboard (/platform/dashboard/) with v7 HTML. Module widget cards now display in 3-column flex grid (was stacking vertically). FAQ modal rebuilt with BS5 tabs (nav-tabs, data-bs-toggle, accordion). Get Started modal rebuilt with v7 card pattern. Video loading preserved. Weather function preserved. All let→var, BS3→BS5 modal/tab attributes. Responsive: 3 cols desktop, 1 col mobile. Dark mode compliant. Zero PHP errors, zero JS errors.