fix: upgrade vite to 7.x to resolve lockfile/platform issues

vitest@4.1.4 requires vite ^6||^7||^8. With vite@6 at project level,
npm@10 installs a separate vite@8 for vitest, which pulls in rolldown
(native .node bindings) that npm ci cannot install cross-platform due
to npm bug #4828.

vite@7 avoids rolldown entirely (uses rollup) and npm@10 deduplicates
correctly with the project-level vite@7. Also adds esbuild@^0.27.0
explicitly (required by vite-plugin-electron-renderer) and aligns with
vite@7's own esbuild@^0.27.0 so no duplicate installs.

- vite: ^6.4.2 → ^7.3.2
- @vitejs/plugin-react: ^4.7.0 → ^5.2.0 (adds vite@7/8 support)
- esbuild: ^0.27.0 added explicitly
- vite.config.ts: manualChunks converted to function form (rollup compat)

package.json

@@ -82,12 +82,13 @@
 		"@types/node": "^25.6.0",
 		"@types/react": "^18.3.28",
 		"@types/react-dom": "^18.3.7",
-		"@vitejs/plugin-react": "^4.7.0",
+		"@vitejs/plugin-react": "^5.2.0",
 		"@vitest/browser": "^4.1.4",
 		"@vitest/browser-playwright": "^4.1.4",
 		"autoprefixer": "^10.5.0",
 		"electron": "^41.2.1",
 		"electron-builder": "^26.8.1",
+		"esbuild": "^0.27.0",
 		"fast-check": "^4.7.0",
 		"husky": "^9.1.7",
 		"jsdom": "^29.0.2",
@@ -96,7 +97,7 @@
 		"tailwindcss": "^3.4.19",
 		"terser": "^5.46.1",
 		"typescript": "^5.9.3",
-		"vite": "^6.4.2",
+		"vite": "^7.3.2",
 		"vite-plugin-electron": "^0.29.1",
 		"vite-plugin-electron-renderer": "^0.14.6",
 		"vitest": "^4.1.4"