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)/admin/partials/modules.tsx

@@ -0,0 +1,18 @@
+import {
+  getPartialsConfig,
+  makePartials,
+} from "$root/defaults/makePartials.tsx";
+import { FreshContext } from "$fresh/server.ts";
+import { State } from "$root/defaults/interfaces.ts";
+import AdminModules from "../(_islands)/AdminModules.tsx";
+
+// deno-lint-ignore require-await
+async function Modules(
+  _request: Request,
+  _context: FreshContext<State>,
+) {
+  return <AdminModules />;
+}
+
+export const config = getPartialsConfig();
+export default makePartials(Modules);