replace ElementPlus to PrimeVue, update TheWelcome

package.json

@@ -19,15 +19,20 @@
     "pnpm": ">=8.15.0"
   },
   "dependencies": {
-    "element-plus": "^2.8.7",
+    "@primevue/forms": "^4.2.1",
+    "@primevue/themes": "^4.2.1",
     "events": "^3.3.0",
     "pinia": "^2.2.6",
     "pouchdb-browser": "^9.0.0",
+    "primeicons": "^7.0.0",
+    "primevue": "^4.2.1",
+    "tailwindcss-primeui": "^0.3.4",
     "vue": "^3.5.12",
     "vue-router": "^4.4.5"
   },
   "devDependencies": {
     "@playwright/test": "^1.48.2",
+    "@primevue/auto-import-resolver": "^4.2.1",
     "@tsconfig/node20": "^20.1.4",
     "@types/jsdom": "^21.1.7",
     "@types/node": "^20.17.6",
@@ -38,13 +43,17 @@
     "@vue/eslint-config-typescript": "^14.1.3",
     "@vue/test-utils": "^2.4.6",
     "@vue/tsconfig": "^0.5.1",
+    "autoprefixer": "^10.4.20",
     "eslint": "^9.14.0",
     "eslint-plugin-playwright": "^2.0.0",
     "eslint-plugin-vue": "^9.30.0",
     "jsdom": "^25.0.1",
     "npm-run-all2": "^7.0.1",
+    "postcss": "^8.4.49",
     "prettier": "^3.3.3",
+    "tailwindcss": "^3.4.14",
     "typescript": "~5.6.3",
+    "unplugin-vue-components": "^0.27.4",
     "vite": "^5.4.10",
     "vite-plugin-vue-devtools": "^7.5.4",
     "vitest": "^2.1.4",