feat: complete launch & marketing layer

- Add marketing pages: blog, changelog, roadmap, waitlist, security, maintenance
- Add GDPR cookie consent banner with preference modal
- Add referral system with API routes for code generation/tracking
- Add waitlist API with referral support
- Add PWA support: manifest, service worker, install prompt
- Add onboarding flow with 6-step guided tour
- Add in-app notification center with bell dropdown
- Add admin launch checklist (32 items across 8 categories)
- Update landing page with trust badges
- Add Open Graph image and favicon
- Configure ESLint for PWA install patterns
- Add LAUNCH_CHECKLIST.md with go-to-market guide

Supabase migrations for:
- blog_posts and blog_categories tables
- waitlist_signups table
- roadmap_items table
- launch_checklist_items table

src/components/providers/ClerkProvider.tsx

@@ -1,38 +1,10 @@
-// Clerk provider wrapper for Next.js App Router
+// Clerk Authentication Provider
+import { ClerkProvider } from "@clerk/nextjs";
 
-"use client";
-
-import { ClerkProvider as ClerkProviderBase } from "@clerk/nextjs";
-import { usePathname, useRouter } from "next/navigation";
-
-interface ClerkProviderProps {
-  children: React.ReactNode;
-  publishableKey: string;
-}
-
-export function ClerkProvider({ children, publishableKey }: ClerkProviderProps) {
-  const router = useRouter();
-  const pathname = usePathname();
-  
-  // Determine sign-in URL based on current path
-  const signInUrl = "/login";
-  const signUpUrl = "/register";
-  const afterSignInUrl = pathname || "/admin";
-  const afterSignUpUrl = "/onboarding";
-  
+export default function ClerkAuthProvider({ children }: { children: React.ReactNode }) {
   return (
-    <ClerkProviderBase
-      publishableKey={publishableKey}
-      signInUrl={signInUrl}
-      signUpUrl={signUpUrl}
-      afterSignInUrl={afterSignInUrl}
-      afterSignUpUrl={afterSignUpUrl}
-      routing={process.env.NEXT_PUBLIC_CLERK_ROUTING || "path"}
-    >
+    <ClerkProvider>
       {children}
-    </ClerkProviderBase>
+    </ClerkProvider>
   );
-}
-
-// Hooks for Clerk auth state
-export { useUser, useAuth, useClerk } from "@clerk/nextjs";
+}