[CLAUDE] FE-User: redesign density-first theo UI/UX guide AI_INFRA — giữ brand SOLUTION (S58)

Anh yêu cầu sau /check-email ai_infra (guide canonical 13 mục "Surgical
Precision Minimalism", anh-approved 06-11): chỉnh giao diện eoffice giống
guide, GIỮ nhận dạng thương hiệu SOLUTION.

14 file fe-user, visual-only (mirror design system fe-admin S55 + đối chiếu
guide; fe-admin/BE untouched):
- index.css: heading ladder semibold (bỏ font-bold) + .label-eyebrow uppercase
  + tnum note. 6 ui primitives (Button/Input/Label/Select/Textarea/Dialog):
  text-xs font-semibold, control h28-40, rounded-lg, focus ring brand-500,
  bỏ shadow trang trí — variant/size keys + props/forwardRef STABLE.
- 6 shell: DataTable (thead sticky + density px-3 py-2 + tnum + RowActions/
  RowActionButton ADDITIVE luôn-hiện không opacity-hover) / Layout (active
  leaf brand left-rail, logic nav/permission nguyên) / TopBar / PageHeader /
  PhaseBadge (ring-current/15) / EmptyState. + LoginPage polish nhẹ.
- BRAND GIỮ: #1F7DC1 (brand-*) + Be Vietnam Pro + neutral slate (guide cho
  plug hue riêng — chia sẻ grammar, không chia sẻ vocabulary-màu).

Verify: npm build ×2 PASS 0 TS err (fe-user 443ms + fe-admin 8.9s untouched-
confirm). Diff-review từng file: functionality keys stable, additive-only.
frontend-designer return-truncated gotcha #53 giữa FD2 screenshot → em main
disk-recover + self-gate (precedent S55); visual live-check sau deploy.

Email AI_INFRA 2026-06-11-ui-ux-design-guide: inbox copy verified hash ✓✓
(whole-file + body), processed sau commit này.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

fe-user/src/pages/LoginPage.tsx

@@ -46,13 +46,13 @@ export function LoginPage() {
       <div className="pointer-events-none absolute -left-32 -top-32 h-96 w-96 rounded-full bg-brand-200/40 blur-3xl" />
       <div className="pointer-events-none absolute -bottom-32 -right-32 h-96 w-96 rounded-full bg-brand-300/30 blur-3xl" />
 
-      <div className="relative w-full max-w-md rounded-2xl border border-slate-200/70 bg-white/90 p-10 shadow-xl backdrop-blur">
+      <div className="relative w-full max-w-md rounded-2xl border border-slate-200/70 bg-white/90 p-10 shadow-lg ring-1 ring-slate-900/5 backdrop-blur">
         <div className="mb-8 flex flex-col items-center text-center">
           <img src="/logo.png" alt="Solutions" className="h-14 w-auto" />
-          <div className="mt-4 text-xs font-semibold uppercase tracking-[0.2em] text-brand-600">
+          <div className="mt-4 text-[11px] font-semibold uppercase tracking-wider text-brand-700">
             ERP · Quản lý hợp đồng
           </div>
-          <div className="mt-1 text-sm text-slate-600">Đăng nhập để tiếp tục</div>
+          <div className="mt-1.5 text-sm text-slate-600">Đăng nhập để tiếp tục</div>
         </div>
         <form onSubmit={handleSubmit} className="space-y-4">
           <div className="space-y-1.5">