Refactor code structure for improved readability and maintainability

Author: brylie

app/.node-version

@@ -0,0 +1 @@
+21.1.0

app/package.json

@@ -27,36 +27,36 @@
   },
   "devDependencies": {
     "@eslint/compat": "^1.2.8",
-    "@eslint/js": "^9.24.0",
-    "@playwright/test": "^1.51.1",
+    "@eslint/js": "^9.25.1",
+    "@playwright/test": "^1.52.0",
     "@sveltejs/adapter-auto": "^4.0.0",
     "@sveltejs/adapter-cloudflare": "^7.0.1",
     "@sveltejs/adapter-static": "^3.0.8",
-    "@sveltejs/kit": "^2.20.5",
+    "@sveltejs/kit": "^2.20.7",
     "@sveltejs/vite-plugin-svelte": "^5.0.3",
     "@tailwindcss/forms": "^0.5.10",
     "@tailwindcss/typography": "^0.5.16",
-    "@tailwindcss/vite": "^4.1.3",
+    "@tailwindcss/vite": "^4.1.4",
     "@testing-library/jest-dom": "^6.6.3",
     "@testing-library/svelte": "^5.2.7",
-    "daisyui": "^5.0.18",
-    "eslint": "^9.24.0",
+    "daisyui": "^5.0.28",
+    "eslint": "^9.25.1",
     "eslint-config-prettier": "^10.1.2",
     "eslint-plugin-svelte": "^3.5.1",
     "fake-indexeddb": "^6.0.0",
     "globals": "^16.0.0",
-    "jsdom": "^26.0.0",
+    "jsdom": "^26.1.0",
     "npm-run-all": "^4.1.5",
     "prettier": "^3.5.3",
     "prettier-plugin-svelte": "^3.3.3",
     "prettier-plugin-tailwindcss": "^0.6.11",
-    "svelte": "^5.25.10",
-    "svelte-check": "^4.1.5",
-    "tailwindcss": "^4.1.3",
+    "svelte": "^5.28.2",
+    "svelte-check": "^4.1.6",
+    "tailwindcss": "^4.1.4",
     "typescript": "^5.8.3",
-    "typescript-eslint": "^8.29.1",
-    "vite": "^6.2.6",
-    "vitest": "^3.1.1"
+    "typescript-eslint": "^8.31.0",
+    "vite": "^6.3.3",
+    "vitest": "^3.1.2"
   },
   "pnpm": {
     "onlyBuiltDependencies": [