Improve scripts

package.json

@@ -13,8 +13,9 @@
     "test:watch": "vitest",
     "lint": "eslint --cache --cache-location ./node_modules/.cache/eslint .",
     "lint:fix": "npm run lint -- --fix",
-    "start": "sh -c '[[ \"$(uname -s)\" == *NT* ]] && wrangler pages dev  ./build/client --ip 0.0.0.0 --port 3000 || (bindings=$(./bindings.sh) && wrangler pages dev ./build/client $bindings --ip 0.0.0.0 --port 3000)'",
-    "typecheck": "tsc",
+    "start:windows": "wrangler pages dev ./build/client",
+    "start:unix": "bindings=$(./bindings.sh) && wrangler pages dev ./build/client $bindings",
+    "start": "node -e \"const { spawn } = require('child_process'); const isWindows = process.platform === 'win32'; const cmd = isWindows ? 'npm run start:windows' : 'npm run start:unix'; const child = spawn(cmd, { shell: true, stdio: 'inherit' }); child.on('exit', code => process.exit(code));\"",    "typecheck": "tsc",
     "typegen": "wrangler types",
     "preview": "npm run build && npm run start"
   },