refactor(backend): 重命名后端项目为 gym-manage-api，修改包名为 cn.novalon.gym.manage

gym-manage-api/TestBCrypt.java

@@ -0,0 +1,14 @@
+import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
+
+public class TestBCrypt {
+    public static void main(String[] args) {
+        BCryptPasswordEncoder encoder = new BCryptPasswordEncoder(12);
+        String password = "admin123";
+        String hash = "$2b$12$SFefXlGRFMA0fvxIufpWPuIAl0OPLgRDoCZPThCvjpiJGPYS8yNYy";
+        
+        System.out.println("测试密码验证:");
+        System.out.println("密码: " + password);
+        System.out.println("哈希: " + hash);
+        System.out.println("验证结果: " + encoder.matches(password, hash));
+    }
+}