Add business workshop management UI with Jalali scheduling and shared dashboard polish.

Includes workshop list/edit/details, registrations modal, category tree, shared EmptyState/RichTextEditor/toasts, and fixes for the Jalali date picker and thumbnail field layout.

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/business/src/pages/ContentPage.tsx

@@ -1,4 +1,4 @@
-import { FileText, GraduationCap } from 'lucide-react'
+import { FileText, GraduationCap, Presentation } from 'lucide-react'
 import { SectionCard } from '../components/SectionCard'
 import { Breadcrumbs } from '../components/Breadcrumbs'
 import { PageTitle } from '../components/PageTitle'
@@ -14,7 +14,7 @@ const contentSections: {
   descKey: BusinessMessageKey
   linkKey: BusinessMessageKey
   href: string
-  moduleId: 'blog' | 'videos' | 'instructions'
+  moduleId: 'blog' | 'videos' | 'instructions' | 'workshops'
 }[] = [
   {
     icon: FileText,
@@ -32,6 +32,14 @@ const contentSections: {
     href: '/instructions',
     moduleId: 'instructions',
   },
+  {
+    icon: Presentation,
+    titleKey: 'nav.workshops',
+    descKey: 'content.card.workshops.desc',
+    linkKey: 'content.card.workshops.link',
+    href: '/workshops',
+    moduleId: 'workshops',
+  },
 ]
 
 export function ContentPage() {