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/components/layouts/standalone.blade.php

@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<html lang="ar" dir="rtl">
+    <head>
+        @include('partials.head')
+    </head>
+    <body class="min-h-screen bg-[#F4F1EA]" style="font-family: var(--font-arabic)">
+        <main class="min-h-screen flex flex-col items-center px-4 py-10 sm:py-16">
+            <div class="w-full max-w-[640px]">
+                {{ $slot }}
+            </div>
+        </main>
+        @fluxScripts
+    </body>
+</html>