feat(ui): implement full UI layer for all modules

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>

routes/(apps)/students/partials/(admin)/consult.tsx

@@ -8,12 +8,7 @@ import { State } from "$root/defaults/interfaces.ts";
 
 // deno-lint-ignore require-await
 async function Students(_request: Request, _context: FreshContext<State>) {
-  return (
-    <>
-      <h2>Consult students</h2>
-      <ConsultStudents />
-    </>
-  );
+  return <ConsultStudents />;
 }
 
 export const config = getPartialsConfig();