feat(ui): complete phase 4 Poyraz UI foundation

app/portal/layout.tsx

@@ -1,5 +1,6 @@
 import { PortalShell } from "@/components/layout/portal-shell";
 import { requireClientUser } from "@/server/auth/session";
+import { getPublicBranding } from "@/server/branding/runtime";
 
 export default async function PortalLayout({
   children,
@@ -7,6 +8,7 @@ export default async function PortalLayout({
   children: React.ReactNode;
 }>) {
   const { user, profile } = await requireClientUser();
+  const branding = getPublicBranding();
   const displayName = profile.displayName || user.name || user.email.split("@")[0] || "Müşteri";
 
   const shortName =
@@ -20,6 +22,12 @@ export default async function PortalLayout({
 
   return (
     <PortalShell
+      branding={{
+        applicationName: branding.applicationName,
+        organizationName: branding.organizationName,
+        lightLogoUrl: branding.lightLogoUrl,
+        darkLogoUrl: branding.darkLogoUrl,
+      }}
       user={{
         email: user.email,
         displayName,