feat: ARDM风格查询页优化 — 可拖拽Sidebar + Redis差异化结果展示 + KeyHeader\n\n1. Sidebar可拖拽宽度(200-600px, localStorage持久化)\n2. Redis raw_text展示加ARDM KeyHeader: key名+类型标签+TTL+格式标签+复制按钮\n3. HGETALL结果用field/value紧凑双列展示替代通用表格\n4. 后端raw_text模式自动查询key TYPE和TTL返回raw_type/raw_ttl

backend/internal/handler/instance_detail.go

@@ -915,14 +915,35 @@ func executeRedisQuery(instance *model.Instance, dbSelect string, command string
 					prettyJSON = strings.TrimRight(buf.String(), "\n")
 				}
 			}
-			return gin.H{
+			// ARDM-style: auto-fetch key type and TTL for KeyHeader
+			var keyType, keyTTL string
+			if keyName != "" && cmd != "TYPE" && cmd != "TTL" && cmd != "PTTL" && cmd != "EXISTS" && cmd != "DBSIZE" && cmd != "INFO" {
+				if t, err := client.Type(ctx, keyName).Result(); err == nil {
+					keyType = t
+				}
+				if ttl, err := client.TTL(ctx, keyName).Result(); err == nil {
+					if ttl < 0 {
+						keyTTL = "永不过期"
+					} else {
+						keyTTL = fmt.Sprintf("%vs", int(ttl.Seconds()))
+					}
+				}
+			}
+			result := gin.H{
 				"columns":   []string{},
 				"rows":      []interface{}{},
 				"total":     0,
 				"raw_value": prettyJSON != "",
 				"raw_key":   keyName,
 				"raw_text":  rawValue,
-			}, nil
+			}
+			if keyType != "" {
+				result["raw_type"] = keyType
+			}
+			if keyTTL != "" {
+				result["raw_ttl"] = keyTTL
+			}
+			return result, nil
 		}
 	}