chore: update package management from yarn to npm

Remove unused dependencies from package.json and switch 
the project’s package manager from Yarn to NPM. This 
enhances compatibility with NPM-based workflows and 
reduces conflicts by ensuring consistent installs through 
npm ci. Additionally, update the Pinia plugin to a newer 
version for better performance and functionality.

nuxt.config.js

@@ -6,6 +6,10 @@ export default defineNuxtConfig({
     transpile: ['vuetify', 'date-fns'],
   },
 
+  devServer: {
+    port: 3001,
+  },
+
   devtools: { enabled: true },
 
   i18n: {
@@ -40,7 +44,7 @@ export default defineNuxtConfig({
     },
     '@nuxt/eslint',
     '@pinia/nuxt',
-    '@pinia-plugin-persistedstate/nuxt',
+    'pinia-plugin-persistedstate/nuxt',
     '@nuxtjs/i18n',
     '@nuxt/devtools',
     '@sentry/nuxt/module',
@@ -74,4 +78,4 @@ export default defineNuxtConfig({
   },
 
   compatibilityDate: '2024-11-03',
-})
+})