添加健康检查接口

- 新增 /health 健康检查端点，返回服务状态信息
- 新增 /health/ping 简单检查端点，返回 pong 响应
- 配置 Spring Security 允许健康检查端点无需认证访问
- 支持负载均衡器和监控系统进行服务可用性检查

play-admin/src/main/java/com/starry/admin/modules/system/controller/HealthController.java

@@ -0,0 +1,49 @@
+package com.starry.admin.modules.system.controller;
+
+import com.starry.common.result.R;
+import io.swagger.annotations.Api;
+import io.swagger.annotations.ApiOperation;
+import io.swagger.annotations.ApiResponse;
+import io.swagger.annotations.ApiResponses;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.time.LocalDateTime;
+import java.time.format.DateTimeFormatter;
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * Health Check Controller
+ * @author admin
+ * @since 2025/08/30
+ */
+@Api(tags = "健康检查", description = "服务健康状态检查接口")
+@RestController
+@RequestMapping("/health")
+public class HealthController {
+
+    @ApiOperation(value = "健康检查", notes = "检查服务是否正常运行")
+    @ApiResponses({
+        @ApiResponse(code = 200, message = "服务正常运行")
+    })
+    @GetMapping
+    public R health() {
+        Map<String, Object> data = new HashMap<>();
+        data.put("status", "UP");
+        data.put("message", "Hello, I'm alive!");
+        data.put("timestamp", LocalDateTime.now().format(DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss")));
+        data.put("service", "peipei-backend");
+        return R.ok(data);
+    }
+
+    @ApiOperation(value = "简单检查", notes = "最简单的存活检查")
+    @ApiResponses({
+        @ApiResponse(code = 200, message = "服务正常")
+    })
+    @GetMapping("/ping")
+    public R ping() {
+        return R.ok("pong");
+    }
+}