feat: 添加请求日志记录和 gRPC 连接快照功能

- 引入 `AndroidRequestLogHelper` 以记录请求日志
- 新增 `AndroidGrpcConnectionSnapshotVO` 和 `AndroidGrpcConnectionDetailVO` 类，用于表示 gRPC 连接快照和详情

backend/src/main/java/com/imeeting/dto/android/AndroidGrpcConnectionDetailVO.java

@@ -0,0 +1,21 @@
+package com.imeeting.dto.android;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.Data;
+
+@Data
+@Schema(description = "Android gRPC 连接详情")
+public class AndroidGrpcConnectionDetailVO {
+
+    @Schema(description = "连接ID")
+    private String connectionId;
+
+    @Schema(description = "设备ID")
+    private String deviceId;
+
+    @Schema(description = "租户ID")
+    private Long tenantId;
+
+    @Schema(description = "用户ID")
+    private Long userId;
+}

backend/src/main/java/com/imeeting/dto/android/AndroidGrpcConnectionSnapshotVO.java

@@ -0,0 +1,17 @@
+package com.imeeting.dto.android;
+
+import io.swagger.v3.oas.annotations.media.Schema;
+import lombok.Data;
+
+import java.util.List;
+
+@Data
+@Schema(description = "Android gRPC 连接快照")
+public class AndroidGrpcConnectionSnapshotVO {
+
+    @Schema(description = "当前连接总数")
+    private int connectionCount;
+
+    @Schema(description = "连接详情列表")
+    private List<AndroidGrpcConnectionDetailVO> connections;
+}

backend/src/main/java/com/imeeting/support/AndroidRequestLogHelper.java

@@ -0,0 +1,67 @@
+package com.imeeting.support;
+
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import org.slf4j.Logger;
+import org.springframework.web.multipart.MultipartFile;
+
+import java.time.LocalDateTime;
+import java.util.Arrays;
+import java.util.LinkedHashMap;
+import java.util.Map;
+
+public final class AndroidRequestLogHelper {
+
+    private static final ObjectMapper OBJECT_MAPPER = new ObjectMapper();
+
+    private AndroidRequestLogHelper() {
+    }
+
+    public static void logRequest(Logger log, String moduleName, String apiName, Object... keyValues) {
+        log.info("[{}]{},请求时间:{},请求参数:{}",
+                moduleName,
+                apiName,
+                LocalDateTime.now(),
+                toJson(buildParams(keyValues)));
+    }
+
+    private static Map<String, Object> buildParams(Object... keyValues) {
+        Map<String, Object> params = new LinkedHashMap<>();
+        if (keyValues == null) {
+            return params;
+        }
+        for (int i = 0; i + 1 < keyValues.length; i += 2) {
+            Object key = keyValues[i];
+            if (key == null) {
+                continue;
+            }
+            params.put(String.valueOf(key), sanitizeValue(keyValues[i + 1]));
+        }
+        return params;
+    }
+
+    private static Object sanitizeValue(Object value) {
+        if (value == null) {
+            return null;
+        }
+        if (value instanceof MultipartFile file) {
+            Map<String, Object> fileInfo = new LinkedHashMap<>();
+            fileInfo.put("name", file.getName());
+            fileInfo.put("originalFilename", file.getOriginalFilename());
+            fileInfo.put("size", file.getSize());
+            return fileInfo;
+        }
+        if (value instanceof MultipartFile[] files) {
+            return Arrays.stream(files).map(AndroidRequestLogHelper::sanitizeValue).toList();
+        }
+        return value;
+    }
+
+    private static String toJson(Object value) {
+        try {
+            return OBJECT_MAPPER.writeValueAsString(value);
+        } catch (JsonProcessingException e) {
+            return String.valueOf(value);
+        }
+    }
+}