feat(dimentorin): audit FE samakan dgn Figma design system

- FIX KRITIS: apps/dimentorin/src/index.css @theme nyimpang dari Figma (67 token beda: primary-500 #1a8ce6 vs #23a1eb, semua warna success/info/warning/danger + skala typography). Disamakan dgn libs/ui (source of truth Figma).
- Hapus hardcoded warna non-token di apps: blue-400, gray-5/6/700, amber/emerald/red-100, green-200/500 -> token primary/neutral/warning/success/danger
- libs/ui: gray-* -> neutral-*, blue-* -> primary-*, #1a8ce6 -> #23a1eb, bg-[#F0F8FF] -> primary-50, SVG fill hex -> fill-* token classes
- Typography: text-[27/26/22/11px] menyimpang dari skala Figma -> text-[29/23/19/12px]
- Radius: rounded-4xl (32px, tidak ada di Figma) -> rounded-3xl (24px)

apps/dimentorin/src/app/auth/register/page.tsx

@@ -65,27 +65,27 @@ export const Components: FC = (): ReactElement => {
                 control={form.control}
                 name={'password'}             
               />
-              <h6 className="text-sm text-gray-500 mt-1">
+              <h6 className="text-sm text-neutral-500 mt-1">
                 "Senpai~! Pastikan password-mu sekuat pertahanan kastil!"
               </h6>
-              <h6 className="text-sm text-gray-500 mt-2">
+              <h6 className="text-sm text-neutral-500 mt-2">
                 Tips membuat password yang OP:
               </h6>
-              <h6 className="text-sm text-gray-500">
+              <h6 className="text-sm text-neutral-500">
                 - Minimal 8 karakter (semakin panjang, semakin power-up!{' '}
                 <span role="img" aria-label="emoji">
                   ⚡
                 </span>
                 )
               </h6>
-              <h6 className="text-sm text-gray-500">
+              <h6 className="text-sm text-neutral-500">
                 - Campur huruf besar, kecil, angka, dan simbol untuk kombinasi
                 ultimate!
                 <span role="img" aria-label="emoji">
                   🔥
                 </span>
               </h6>
-              <h6 className="text-sm text-gray-500 mb-2">
+              <h6 className="text-sm text-neutral-500 mb-2">
                 - Jangan pakai password yang gampang ditebak, nanti ketahuan
                 musuh!
                 <span role="img" aria-label="emoji">