diff --git a/HangmanLab.Backend b/HangmanLab.Backend
index 6626fac..fa855bc 160000
--- a/HangmanLab.Backend
+++ b/HangmanLab.Backend
@@ -1 +1 @@
-Subproject commit 6626fac4520bfb162e7eba8738dd4f3f83792b4e
+Subproject commit fa855bc7bb9972ed66922863051bc9598b95348a
diff --git a/HangmanLab.Frontend b/HangmanLab.Frontend
index 09338a2..947b59e 160000
--- a/HangmanLab.Frontend
+++ b/HangmanLab.Frontend
@@ -1 +1 @@
-Subproject commit 09338a26834efa63886946b4b2f4304f8b581211
+Subproject commit 947b59e3eac569c7663de6a89a5b4cd093290515
diff --git a/dev_build.sh b/dev_build.sh
new file mode 100644
index 0000000..fdaa2a9
--- /dev/null
+++ b/dev_build.sh
@@ -0,0 +1,52 @@
+#!/bin/bash
+
+export $(grep -v '^#' .env | xargs)
+
+FRONTEND_PORT=${FRONTEND_PORT:-3000}
+BACKEND_PORT=${BACKEND_PORT:-5000}
+KC_CLIENT_ID=${KC_CLIENT_ID:-labdev}
+KC_HOST=${KC_HOST:-https://login.hangman-lab.top}
+KC_REALM=${KC_REALM:-Hangman-Lab}
+FRONTEND_HOST=${FRONTEND_HOST:-http://localhost:$FRONTEND_PORT}
+BACKEND_HOST=${BACKEND_HOST:-http://localhost:$BACKEND_PORT}
+
+
+cat <<EOL > HangmanLab.Frontend/public/config.json
+{
+    "BACKEND_HOST": "$BACKEND_HOST",
+    "FRONTEND_HOST": "$FRONTEND_HOST",
+    "KC_CLIENT_ID": "$KC_CLIENT_ID",
+    "OIDC_CONFIG": {
+        "authority": "$KC_HOST/realms/$KC_REALM",
+        "client_id": "$KC_CLIENT_ID",
+        "redirect_uri": "$FRONTEND_HOST/callback",
+        "post_logout_redirect_uri": "$FRONTEND_HOST",
+        "response_type": "code",
+        "scope": "openid profile email roles",
+        "popup_redirect_uri": "$FRONTEND_HOST/popup_callback",
+        "silent_redirect_uri": "$FRONTEND_HOST/silent_callback"
+    }
+}
+EOL
+
+echo "✅ config.json Generated"
+
+echo "🚀 Launch React dev server (port: $FRONTEND_PORT)"
+(
+  cd HangmanLab.Frontend || exit
+  npm install
+  npm start
+) &
+
+echo "🚀 Launch Flask dev server (port: $BACKEND_PORT)"
+(
+  cd HangmanLab.Backend || exit
+  pip install -r requirements.txt
+  export FLASK_APP=app.py
+  export FLASK_ENV=development
+  export FLASK_RUN_PORT=$BACKEND_PORT
+  export FLASK_RUN_HOST=0.0.0.0
+  flask run
+)
+
+wait