Upgrade Vite from 6 to 7 and @vitejs/plugin-vue from 5 to 6

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

package.json

@@ -53,7 +53,7 @@
     "@types/cytoscape-dagre": "^2.3.4",
     "@types/cytoscape-popper": "^2.0.4",
     "@types/node": "^20.19.37",
-    "@vitejs/plugin-vue": "^5.2.4",
+    "@vitejs/plugin-vue": "^6.0.4",
     "@vue/eslint-config-prettier": "^10.2.0",
     "@vue/test-utils": "^2.4.6",
     "cypress": "^15.11.0",
@@ -69,7 +69,7 @@
     "tailwindcss": "^4.2.1",
     "ts-node": "^10.9.2",
     "typescript": "^5.9.3",
-    "vite": "^6.4.1",
+    "vite": "^7.3.1",
     "vitest": "^3.2.4",
     "vue-eslint-parser": "^10.4.0"
   }