feat: Initial Diabetix application commit

- Add authentication with NextAuth v5 (credentials + email verification)
- Implement dashboard with glycemia tracking and AI analysis
- Add PDF report generation for Premium users
- Implement Stripe integration for Premium subscriptions
- Add responsive UI with Tailwind CSS and shadcn components
- Database schema with Prisma ORM and PostgreSQL support
- Real-time glycemia visualization with Recharts
- Mobile-optimized entry form
- User profile management with medical information
- Subscription lifecycle management (create, cancel, webhook)
- Email notifications with Resend
- Feature gates for Free vs Premium plans

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

public/sw.js

@@ -0,0 +1,52 @@
+const CACHE = "diabetix-v1";
+const APP_SHELL = ["/", "/saisie", "/historique", "/manifest.webmanifest", "/icon.svg"];
+
+self.addEventListener("install", (event) => {
+  event.waitUntil(
+    caches.open(CACHE).then((cache) => cache.addAll(APP_SHELL)).catch(() => {})
+  );
+  self.skipWaiting();
+});
+
+self.addEventListener("activate", (event) => {
+  event.waitUntil(
+    caches.keys().then((keys) =>
+      Promise.all(keys.filter((k) => k !== CACHE).map((k) => caches.delete(k)))
+    )
+  );
+  self.clients.claim();
+});
+
+self.addEventListener("fetch", (event) => {
+  const { request } = event;
+  if (request.method !== "GET") return;
+
+  const url = new URL(request.url);
+  if (url.origin !== self.location.origin) return;
+
+  // Network-first for HTML and API, cache fallback
+  if (request.mode === "navigate" || url.pathname.startsWith("/api/")) {
+    event.respondWith(
+      fetch(request)
+        .then((res) => {
+          const copy = res.clone();
+          caches.open(CACHE).then((c) => c.put(request, copy)).catch(() => {});
+          return res;
+        })
+        .catch(() => caches.match(request).then((m) => m || caches.match("/")))
+    );
+    return;
+  }
+
+  // Cache-first for static assets
+  event.respondWith(
+    caches.match(request).then((cached) => {
+      if (cached) return cached;
+      return fetch(request).then((res) => {
+        const copy = res.clone();
+        caches.open(CACHE).then((c) => c.put(request, copy)).catch(() => {});
+        return res;
+      });
+    })
+  );
+});