GitLab

UI: add Settings skeleton page with v-tabs + 6 categories
UI: enlarge TaskView event fonts and replace progress bar with SVG ring
UI: add native title tooltip on TaskView events
UI: convert filter panel toggle to floating icon button with slide animation
UI: set browser tab title to "学生管理系统"

moved endpoints to /src/api; moved menu items to /src/components/constants/menuItems.js; added breadcrumbs; added Student page