feat: add WebPush support for notifications and implement rate limiting

- Added WebPush subscription keys (webPushP256dh, webPushAuth) to device schema and GraphQL types.
- Updated registerDevice mutation to require WebPush keys for web platform.
- Enhanced notification sending logic to handle WebPush messages with proper payload construction.
- Implemented a scheduler for processing scheduled notifications.
- Introduced a worker for handling notification jobs with retry logic.
- Added rate limiting middleware for GraphQL endpoint.
- Created utility functions for Redis connection and rate limiting.
- Established a notification queue using BullMQ for managing notification jobs.

Author: productdevbook

.env.example

@@ -18,8 +18,19 @@ HOST=localhost
 # Push provider configurations are stored per-app in the database
 # No global defaults needed - each app has its own FCM/APNs/WebPush config
 
-# Redis (for queue system - to be implemented)
-REDIS_URL=redis://localhost:6379
+# Redis (for queue system and rate limiting)
+REDIS_HOST=localhost
+REDIS_PORT=6379
+REDIS_PASSWORD=
+
+# Rate Limiting
+RATE_LIMIT_DEFAULT=1000
+RATE_LIMIT_WINDOW=3600
+# Set to true to disable rate limiting in development
+RATE_LIMIT_DISABLED=false
+
+# Scheduler (for scheduled notifications)
+SCHEDULER_ENABLED=true
 
 # Email Configuration (for notifications about service)
 SMTP_HOST=smtp.gmail.com

app/components/AppSidebar.vue

@@ -11,6 +11,7 @@ import {
 } from 'abckit/shadcn/sidebar'
 import {
   BarChart3,
+  Bell,
   FileText,
   Github,
   Home,
@@ -63,6 +64,12 @@ const navTools = computed(() => [
     icon: Smartphone,
     isActive: route.path.startsWith('/devices'),
   },
+  {
+    title: 'Web Push Test',
+    url: '/test-webpush',
+    icon: Bell,
+    isActive: route.path.startsWith('/test-webpush'),
+  },
 ])
 
 const navHelp = computed(() => [

app/layouts/default.vue

@@ -20,6 +20,8 @@ const pageTitle = computed(() => {
     return 'Send Notification'
   if (path.startsWith('/devices'))
     return 'Device Testing'
+  if (path.startsWith('/test-webpush'))
+    return 'Web Push Test'
   if (path.startsWith('/docs'))
     return 'Documentation'
   if (path.startsWith('/settings'))