feat(branding): add global dynamic theme system and fix 2fa mail

shop/components/HomeClient.tsx

@@ -35,12 +35,14 @@ import { AsciiShaderBackground } from '@/components/AsciiShaderBackground'
 import { ProcessSteps } from '@/components/ProcessSteps'
 import { ScrollIndicator } from '@/components/ScrollIndicator'
 import { WorkspaceZentrale } from '@/components/WorkspaceZentrale'
+import { useTheme } from '@/components/ThemeProvider'
 
 interface HomeClientProps {
   initialUser: User | null
 }
 
 export function HomeClient({ initialUser }: HomeClientProps) {
+  const { branding } = useTheme()
   const [user, setUser] = useState<User | null>(initialUser)
   const [mounted, setMounted] = useState(false)
   const [calendarOpen, setCalendarOpen] = useState(false)
@@ -265,7 +267,9 @@ export function HomeClient({ initialUser }: HomeClientProps) {
       {/* Footer */}
       <footer className="w-full border-t border-slate-900 bg-slate-950 py-8 px-4 md:px-6 relative z-10">
         <div className="container max-w-6xl mx-auto flex flex-col sm:flex-row items-center justify-between gap-4">
-          <p className="text-xs text-slate-500">© 2026 CASPOS GmbH. Alle Rechte vorbehalten.</p>
+          <p className="text-xs text-slate-500">
+            {branding?.developerFooter || (branding?.companyName ? `© ${new Date().getFullYear()} ${branding.companyName}. Alle Rechte vorbehalten.` : `© ${new Date().getFullYear()} B2B Shop. Alle Rechte vorbehalten.`)}
+          </p>
           <nav className="flex gap-6">
             <Link className="text-xs text-slate-500 hover:text-slate-300 transition-colors" href="/impressum">Impressum</Link>
             <Link className="text-xs text-slate-500 hover:text-slate-300 transition-colors" href="/datenschutz">Datenschutz</Link>