EHSAN official look & auth (Task #5)

Reskin the EHSAN POC to match ehsan.sa and gate the admin area behind a
simple POC login.

- Official header: cropped EHSAN logo, nav (الرئيسية/الوقف/فرص التبرع/
  خدماتنا dropdown→طلب دعم/عن إحسان/براعم إحسان), login/cart/search icons,
  language toggle, mobile menu. Functional items link; rest are visual-only.
- Colors: green primary tuned + orange accent token added in index.css.
- Auth: AuthContext (localStorage, admin/admin) + login page; /admin and
  /whatsapp-log now behind a Protected wrapper redirecting to /login.
- Redesigned OpportunityCard (photo, green progress bar with %, category
  badge, تم جمع/المبلغ المتبقي columns, inline donate button + amount),
  used on home and opportunities pages.
- Two-step donate page (التفاصيل → الدفع): step indicator, presets
  100/50/10, custom amount (prefilled via ?amount=), "تبرع عن أهلك"
  checkbox, donor form (phone min 10 for OpenClaw loop).
- 8 need-type card images added; needImages helper maps need→image.
- Seed: added published opportunities (req-012..017) with partial progress
  to showcase cards; one kept near-full for an easy closed-loop demo.

Deviation (from code review): donate handler now ACCUMULATES collectedAmount
and clamps to target, validates finite/positive amount, and only advances to
the closed-loop pipeline when a case is fully funded (previously overwrote
and force-advanced — broke partial-progress cases). Donate buttons kept green
to match the reference; orange is an accent only.

artifacts/ehsan-poc/src/lib/i18n/translations.ts

@@ -25,6 +25,31 @@ export const en = {
     allOpportunities: "All Opportunities",
     featuredCases: "Featured Cases",
     donate: "Donate",
+    login: "Login",
+    logout: "Logout",
+    cart: "Cart",
+  },
+  nav: {
+    home: "Home",
+    waqf: "Endowment",
+    opportunities: "Donation Opportunities",
+    services: "Services",
+    about: "About EHSAN",
+    baraem: "EHSAN Buds",
+    requestSupport: "Request Support",
+    admin: "Admin Panel",
+    whatsappLog: "WhatsApp Log",
+    quickDonate: "Quick Donate",
+  },
+  auth: {
+    title: "Admin Login",
+    subtitle: "Sign in to access the management dashboard",
+    username: "Username",
+    password: "Password",
+    signIn: "Sign In",
+    error: "Invalid username or password",
+    demoHint: "Demo credentials: admin / admin",
+    loggedInAs: "Signed in as administrator",
   },
   home: {
     heroTitle: "Closed Donation Loop POC",
@@ -102,6 +127,10 @@ export const en = {
     target: "Target",
     noOpportunities: "No opportunities are available right now.",
     verified: "Verified",
+    collectedShort: "Collected",
+    remainingShort: "Remaining",
+    amountPlaceholder: "Donation amount",
+    generalProjects: "General Projects",
   },
   donate: {
     title: "Complete Donation",
@@ -113,6 +142,18 @@ export const en = {
     confirmDonation: "Confirm Donation",
     successMessage: "Thank you for your donation. May Allah reward you.",
     caseNotFound: "Case not found or no longer available.",
+    stepDetails: "Details",
+    stepPayment: "Payment",
+    detailsTitle: "Details",
+    amountTitle: "Donation Amount",
+    customAmount: "Amount value",
+    onBehalf: "Donate on behalf of family or friends and share the reward",
+    onBehalfName: "Name of the person you donate for",
+    donateNow: "Donate Now",
+    continueToPayment: "Continue to Payment",
+    backToDetails: "Back to Details",
+    paymentTitle: "Payment Details",
+    selectAmountError: "Please select or enter a valid amount.",
   },
   admin: {
     title: "Admin Dashboard",
@@ -192,6 +233,31 @@ export const ar = {
     allOpportunities: "جميع الفرص",
     featuredCases: "الحالات المميزة",
     donate: "تبرع",
+    login: "تسجيل الدخول",
+    logout: "تسجيل الخروج",
+    cart: "السلة",
+  },
+  nav: {
+    home: "الرئيسية",
+    waqf: "الوقف",
+    opportunities: "فرص التبرع",
+    services: "خدماتنا",
+    about: "عن إحسان",
+    baraem: "براعم إحسان",
+    requestSupport: "طلب دعم",
+    admin: "لوحة الإدارة",
+    whatsappLog: "سجل واتساب",
+    quickDonate: "تبرع سريع",
+  },
+  auth: {
+    title: "دخول الإدارة",
+    subtitle: "سجّل الدخول للوصول إلى لوحة الإدارة",
+    username: "اسم المستخدم",
+    password: "كلمة المرور",
+    signIn: "تسجيل الدخول",
+    error: "اسم المستخدم أو كلمة المرور غير صحيحة",
+    demoHint: "بيانات تجريبية: admin / admin",
+    loggedInAs: "تم تسجيل الدخول كمسؤول",
   },
   home: {
     heroTitle: "إقفال دورة التبرع",
@@ -269,6 +335,10 @@ export const ar = {
     target: "الهدف",
     noOpportunities: "لا توجد فرص متاحة حالياً.",
     verified: "موثق",
+    collectedShort: "تم جمع",
+    remainingShort: "المبلغ المتبقي",
+    amountPlaceholder: "مبلغ التبرع",
+    generalProjects: "المشاريع العامة",
   },
   donate: {
     title: "إتمام التبرع",
@@ -280,6 +350,18 @@ export const ar = {
     confirmDonation: "تأكيد التبرع",
     successMessage: "شكراً لتبرعك. جزاك الله خيراً.",
     caseNotFound: "الحالة غير موجودة أو لم تعد متاحة.",
+    stepDetails: "التفاصيل",
+    stepPayment: "الدفع",
+    detailsTitle: "التفاصيل",
+    amountTitle: "مبلغ التبرع",
+    customAmount: "قيمة المبلغ",
+    onBehalf: "تبرع عن أهلك أو أصدقائك وشاركهم الأجر",
+    onBehalfName: "اسم من تتبرع عنه",
+    donateNow: "تبرع الآن",
+    continueToPayment: "متابعة للدفع",
+    backToDetails: "رجوع للتفاصيل",
+    paymentTitle: "بيانات الدفع",
+    selectAmountError: "الرجاء اختيار أو إدخال مبلغ صحيح.",
   },
   admin: {
     title: "لوحة الإدارة",