feat: Implement push notifications in Budget Manager PWA

- Added functionality for subscribing to push notifications in Settings.vue.
- Integrated service worker registration and notification permission requests.
- Enhanced Vite configuration for PWA with manifest and caching strategies.
- Created a script for generating PDF reports.
- Added project report markdown file detailing the PWA implementation and features.

frontend/package.json

@@ -13,6 +13,7 @@
     "@tailwindcss/vite": "^4.1.7",
     "@vee-validate/zod": "^4.15.0",
     "@vueuse/core": "^13.2.0",
+    "chart.js": "^4.4.9",
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
     "lucide-vue-next": "^0.511.0",
@@ -25,6 +26,7 @@
     "tw-animate-css": "^1.3.0",
     "vee-validate": "^4.15.0",
     "vue": "^3.5.14",
+    "vue-chartjs": "^5.3.2",
     "vue-router": "^4.5.1",
     "zod": "^3.25.7"
   },