Replace logo with client-supplied artwork; add Nablus workshop registration form

- public/images/logo.png replaced with the client's professionally-designed
  version, cropped to remove excess background margin (used sitewide via
  logo.blade.php / app-logo.blade.php / app-logo-icon.blade.php)
- New standalone, unlinked registration form at /forms/nablus-workshop for a
  one-off workshop Libra is co-hosting with Smart Business Center, replicating
  a ClickUp form the client previously used but with Libra's own branding.
  Submissions email info@libra.adv.ps and redirect to /about. No nav/footer
  link, no DB storage, no captcha (PRD v1.3).
- Tasks 17 (parent), 17-1 (Mailable + email template), 17-2 (page/route/form)
  taken through product-definition -> task-readiness -> dev-implement -> dev-qa,
  all Done. 11 new tests passing; full suite run clean of new regressions
  (69 pre-existing unrelated failures, documented in docs/tasks/17.md).

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

resources/views/emails/workshop-registration/ar.blade.php

@@ -0,0 +1,16 @@
+<x-mail::message>
+<div dir="rtl" style="text-align: right;">
+# تسجيل جديد في ورشة عمل رياديات نابلس
+
+تم استلام تسجيل جديد بالبيانات التالية:
+
+- **الاسم الكامل:** {{ $fullName }}
+- **رقم التواصل:** {{ $contactNumber }}
+@if($email)
+- **البريد الإلكتروني:** {{ $email }}
+@endif
+
+مع أطيب التحيات،<br>
+{{ config('app.name') }}
+</div>
+</x-mail::message>