refactor(backend): move db repos to typescript and update imports

server/src/modules/push-sub/push-sub.services.ts

@@ -0,0 +1,42 @@
+import webPush from 'web-push';
+
+import { vapidKeysDb } from '@/shared/database/repositories/vapid-keys.js';
+
+type VapidKeyPair = {
+  publicKey: string;
+  privateKey: string;
+};
+
+let cachedKeys: VapidKeyPair | null = null;
+
+function ensureVapidKeys(): VapidKeyPair {
+  if (cachedKeys) return cachedKeys;
+
+  const existingKeys = vapidKeysDb.getVapidKeys();
+  if (existingKeys) {
+    cachedKeys = existingKeys;
+    return existingKeys;
+  }
+
+  const generatedKeys = webPush.generateVAPIDKeys();
+  vapidKeysDb.createVapidKeys(generatedKeys.publicKey, generatedKeys.privateKey);
+  cachedKeys = generatedKeys;
+  return generatedKeys;
+}
+
+function getPublicKey(): string {
+  return ensureVapidKeys().publicKey;
+}
+
+function configureWebPush(): void {
+  const keys = ensureVapidKeys();
+  webPush.setVapidDetails(
+    'mailto:noreply@claudecodeui.local',
+    keys.publicKey,
+    keys.privateKey
+  );
+  console.log('Web Push notifications configured');
+}
+
+export { ensureVapidKeys, getPublicKey, configureWebPush };
+