feat: complete HookLab MVP - TikTok Shop coaching platform

Full-stack Next.js 15 application with:
- Landing page with marketing components (Hero, Testimonials, Pricing, FAQ)
- Multi-step candidature form with API route
- Stripe Checkout integration (subscription + webhooks)
- Supabase Auth (login/register) with middleware protection
- Dashboard with progress tracking and module system
- Formations pages with completion tracking
- Profile management with password change
- Database schema with RLS policies
- Resend email integration for transactional emails

Stack: Next.js 15, TypeScript, Tailwind CSS v4, Supabase, Stripe, Resend

https://claude.ai/code/session_01H2aRGDaKgarPvhay2HxN6Y

lib/stripe/client.ts

@@ -0,0 +1,6 @@
+import Stripe from "stripe";
+
+// Client Stripe côté serveur
+export const stripe = new Stripe(process.env.STRIPE_SECRET_KEY!, {
+  typescript: true,
+});

lib/supabase/client.ts

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+import { createBrowserClient } from "@supabase/ssr";
+import type { Database } from "@/types/database.types";
+
+// Client Supabase côté navigateur (composants client)
+export const createClient = () =>
+  createBrowserClient<Database>(
+    process.env.NEXT_PUBLIC_SUPABASE_URL!,
+    process.env.NEXT_PUBLIC_SUPABASE_ANON_KEY!
+  );

lib/supabase/middleware.ts

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+import { createServerClient } from "@supabase/ssr";
+import { NextResponse, type NextRequest } from "next/server";
+
+// Middleware Supabase pour refresh des tokens auth
+export async function updateSession(request: NextRequest) {
+  let supabaseResponse = NextResponse.next({
+    request,
+  });
+
+  const supabase = createServerClient(
+    process.env.NEXT_PUBLIC_SUPABASE_URL!,
+    process.env.NEXT_PUBLIC_SUPABASE_ANON_KEY!,
+    {
+      cookies: {
+        getAll() {
+          return request.cookies.getAll();
+        },
+        setAll(cookiesToSet) {
+          cookiesToSet.forEach(({ name, value }) =>
+            request.cookies.set(name, value)
+          );
+          supabaseResponse = NextResponse.next({
+            request,
+          });
+          cookiesToSet.forEach(({ name, value, options }) =>
+            supabaseResponse.cookies.set(name, value, options)
+          );
+        },
+      },
+    }
+  );
+
+  const {
+    data: { user },
+  } = await supabase.auth.getUser();
+
+  // Rediriger vers login si pas connecté et route protégée
+  if (
+    !user &&
+    request.nextUrl.pathname.startsWith("/dashboard")
+  ) {
+    const url = request.nextUrl.clone();
+    url.pathname = "/login";
+    return NextResponse.redirect(url);
+  }
+
+  // Rediriger vers dashboard si déjà connecté et sur login/register
+  if (
+    user &&
+    (request.nextUrl.pathname === "/login" ||
+      request.nextUrl.pathname === "/register")
+  ) {
+    const url = request.nextUrl.clone();
+    url.pathname = "/dashboard";
+    return NextResponse.redirect(url);
+  }
+
+  return supabaseResponse;
+}

lib/supabase/server.ts

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+import { createServerClient } from "@supabase/ssr";
+import { cookies } from "next/headers";
+import type { Database } from "@/types/database.types";
+
+// Client Supabase côté serveur (Server Components, Route Handlers)
+export const createClient = async () => {
+  const cookieStore = await cookies();
+
+  return createServerClient<Database>(
+    process.env.NEXT_PUBLIC_SUPABASE_URL!,
+    process.env.NEXT_PUBLIC_SUPABASE_ANON_KEY!,
+    {
+      cookies: {
+        getAll() {
+          return cookieStore.getAll();
+        },
+        setAll(cookiesToSet) {
+          try {
+            cookiesToSet.forEach(({ name, value, options }) =>
+              cookieStore.set(name, value, options)
+            );
+          } catch {
+            // Ignore en Server Component (lecture seule)
+          }
+        },
+      },
+    }
+  );
+};
+
+// Client admin avec service role (webhooks, opérations admin)
+export const createAdminClient = () => {
+  return createServerClient<Database>(
+    process.env.NEXT_PUBLIC_SUPABASE_URL!,
+    process.env.SUPABASE_SERVICE_ROLE_KEY!,
+    {
+      cookies: {
+        getAll() {
+          return [];
+        },
+        setAll() {},
+      },
+    }
+  );
+};

lib/utils.ts

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+import { type ClassValue, clsx } from "clsx";
+
+// Utilitaire pour combiner les classes CSS (compatible Tailwind)
+export function cn(...inputs: ClassValue[]) {
+  return inputs.filter(Boolean).join(" ");
+}
+
+// Formater un prix en euros
+export function formatPrice(amount: number): string {
+  return new Intl.NumberFormat("fr-FR", {
+    style: "currency",
+    currency: "EUR",
+  }).format(amount / 100);
+}
+
+// Valider un email
+export function isValidEmail(email: string): boolean {
+  const re = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
+  return re.test(email);
+}
+
+// URL de base de l'application
+export function getBaseUrl(): string {
+  if (process.env.NEXT_PUBLIC_APP_URL) {
+    return process.env.NEXT_PUBLIC_APP_URL;
+  }
+  return "http://localhost:3000";
+}