feat(notes): add XLSX import island and admin route feat(upload): add drag‑and‑drop upload, template download, UI tweaks
Add interactive island components and server partials for notes, students, and admin modules, following the Figma prototype design. - static/styles/ui.css: shared component library (buttons, tables, chips, cards, filters, tabs, form inputs) - notes: NotesView (student grade view with UE cards, promo tabs, weighted averages), AdminConsultNotes, AdminUEs islands + partials - students: ConsultStudents (list/filter/delete), AdminPromotions (CRUD) islands + partials - admin: AdminModules, AdminUsers, AdminRoles islands + partials - All partials use State type with unknown cast for session access Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Add type="button" to the EditMobility and UploadStudents buttons to prevent default form submission behavior. Include a key prop on Student components in Promotion for stable list rendering.