feat: Enhance deployment scripts with environment variable validation and loading

deploy.bat

@@ -7,6 +7,34 @@ set GIT_BRANCH=%2
 if "%GIT_BRANCH%"=="" set GIT_BRANCH=ui-fix
 set GIT_COMMIT=%3
 
+REM Check if .env.production exists
+if exist .env.production (
+    echo Loading production environment variables...
+    for /f "delims=" %%x in (.env.production) do (
+        set "%%x"
+    )
+) else (
+    echo Warning: .env.production not found. Make sure environment variables are set!
+)
+
+REM Validate critical environment variables
+if "%NEXTAUTH_SECRET%"=="" (
+    echo ERROR: NEXTAUTH_SECRET must be set to a secure random string!
+    echo Generate one with: openssl rand -base64 32
+    exit /b 1
+)
+
+@REM if "%NEXTAUTH_SECRET%"=="YOUR_SUPER_SECURE_SECRET_KEY_HERE_AT_LEAST_32_CHARACTERS_LONG" (
+@REM     echo ERROR: NEXTAUTH_SECRET must be changed from the default value!
+@REM     echo Generate one with: openssl rand -base64 32
+@REM     exit /b 1
+@REM )
+
+if "%NEXTAUTH_URL%"=="" (
+    echo ERROR: NEXTAUTH_URL must be set to your production URL!
+    exit /b 1
+)
+
 if "%GIT_REPO_URL%"=="" (
     echo Building from local files...
     docker-compose -f docker-compose.prod.yml build