feat: ordered dev startup with concurrently + wait-on (server → admin)

package.json

@@ -7,7 +7,7 @@
     "packages/*"
   ],
   "scripts": {
-    "dev": "turbo run dev",
+    "dev": "concurrently -n server,admin -c blue,green \"npm run dev -w apps/server\" \"wait-on tcp:3000 && npm run dev -w apps/admin\"",
     "build": "turbo run build",
     "lint": "turbo run lint",
     "test": "turbo run test",
@@ -15,9 +15,11 @@
     "typecheck": "turbo run typecheck"
   },
   "devDependencies": {
+    "concurrently": "^10.0.3",
     "oxfmt": "^0.57.0",
     "oxlint": "^1.72.0",
-    "turbo": "^2.0.0"
+    "turbo": "^2.0.0",
+    "wait-on": "^9.0.10"
   },
   "dependencies": {
     "@fission-ai/openspec": "^1.5.0"