diff --git a/src/modules/monitoring/Domain/Entities/AlertRule.cs b/src/modules/monitoring/Domain/Entities/AlertRule/AlertRuleEntity.cs
similarity index 90%
rename from src/modules/monitoring/Domain/Entities/AlertRule.cs
rename to src/modules/monitoring/Domain/Entities/AlertRule/AlertRuleEntity.cs
index 79d8096..0874910 100644
--- a/src/modules/monitoring/Domain/Entities/AlertRule.cs
+++ b/src/modules/monitoring/Domain/Entities/AlertRule/AlertRuleEntity.cs
@@ -1,14 +1,14 @@
 using System.ComponentModel.DataAnnotations.Schema;
 using System.Text.Json;
-using Monitoring.Domain.Enums;
+using Monitoring.Domain.Values;
 
-namespace Monitoring.Domain.Entities;
+namespace Monitoring.Domain.Entities.AlertRule;
 
 /// <summary>
 /// 告警规则实体。id + 外部系统Id索引列 + json_data + 审计列。
 /// jsonb 承载规则名称/指标名/阈值/运算符/严重级别/启用/冷却/触发时间。
 /// </summary>
-public class AlertRule : BaseEntity, IFullAudit
+public class AlertRuleEntity : BaseEntity, IFullAudit
 {
     /// <summary>绑定的外部系统 Id（索引列）。</summary>
     public Guid ExternalSystemId { get; set; }
diff --git a/src/modules/monitoring/Domain/Entities/ExternalSystem.cs b/src/modules/monitoring/Domain/Entities/ExternalSystem/ExternalSystemEntity.cs
similarity index 91%
rename from src/modules/monitoring/Domain/Entities/ExternalSystem.cs
rename to src/modules/monitoring/Domain/Entities/ExternalSystem/ExternalSystemEntity.cs
index abf310c..52305ce 100644
--- a/src/modules/monitoring/Domain/Entities/ExternalSystem.cs
+++ b/src/modules/monitoring/Domain/Entities/ExternalSystem/ExternalSystemEntity.cs
@@ -1,15 +1,16 @@
 using System.ComponentModel.DataAnnotations.Schema;
 using System.Text.Json;
 using Monitoring.Domain.Enums;
+using Monitoring.Domain.Values;
 
-namespace Monitoring.Domain.Entities;
+namespace Monitoring.Domain.Entities.ExternalSystem;
 
 /// <summary>
 /// 外部系统配置实体。极简文档模式：id + 必要索引列 + json_data + 审计列。
 /// 所有可变/扩展字段（名称/类型/URL/参数/凭证/同步状态）统一存 JsonData(jsonb)，
 /// 通过 <see cref="Data"/> 强类型访问，避免列爆炸。
 /// </summary>
-public class ExternalSystem : BaseEntity, IFullAudit
+public class ExternalSystemEntity : BaseEntity, IFullAudit
 {
     /// <summary>
     /// 业务数据（jsonb）。承载名称/类型/BaseUrl/参数/凭证/同步状态等全部业务字段。
diff --git a/src/modules/monitoring/Domain/Entities/SyncJob.cs b/src/modules/monitoring/Domain/Entities/SyncJob/SyncJobEntity.cs
similarity index 89%
rename from src/modules/monitoring/Domain/Entities/SyncJob.cs
rename to src/modules/monitoring/Domain/Entities/SyncJob/SyncJobEntity.cs
index 01913a7..9504c8d 100644
--- a/src/modules/monitoring/Domain/Entities/SyncJob.cs
+++ b/src/modules/monitoring/Domain/Entities/SyncJob/SyncJobEntity.cs
@@ -1,20 +1,21 @@
 using System.ComponentModel.DataAnnotations.Schema;
 using System.Text.Json;
 using Monitoring.Domain.Enums;
+using Monitoring.Domain.Values;
 
-namespace Monitoring.Domain.Entities;
+namespace Monitoring.Domain.Entities.SyncJob;
 
 /// <summary>
 /// 同步任务记录实体。id + 外部系统Id + 状态/时间索引列 + json_data + 审计列。
 /// jsonb 承载触发来源/汇总指标/错误信息。
 /// </summary>
-public class SyncJob : BaseEntity, IFullAudit
+public class SyncJobEntity : BaseEntity, IFullAudit
 {
     /// <summary>目标外部系统 Id（索引列，高频查询）。</summary>
     public Guid ExternalSystemId { get; set; }
 
     /// <summary>任务状态（索引列，统计成功率/查 Failed 排查）。</summary>
-    public SyncJobStatus Status { get; set; } = SyncJobStatus.Pending;
+    public SyncJobStatusEnum Status { get; set; } = SyncJobStatusEnum.Pending;
 
     /// <summary>开始时间（UTC）。</summary>
     public DateTime? StartedAt { get; set; }
diff --git a/src/modules/monitoring/Domain/Entities/SyncedRecord.cs b/src/modules/monitoring/Domain/Entities/SyncedRecord/SyncedRecordEntity.cs
similarity index 93%
rename from src/modules/monitoring/Domain/Entities/SyncedRecord.cs
rename to src/modules/monitoring/Domain/Entities/SyncedRecord/SyncedRecordEntity.cs
index d66ba6a..2d31646 100644
--- a/src/modules/monitoring/Domain/Entities/SyncedRecord.cs
+++ b/src/modules/monitoring/Domain/Entities/SyncedRecord/SyncedRecordEntity.cs
@@ -1,14 +1,15 @@
 using System.ComponentModel.DataAnnotations.Schema;
 using System.Text.Json;
+using Monitoring.Domain.Values;
 
-namespace Monitoring.Domain.Entities;
+namespace Monitoring.Domain.Entities.SyncedRecord;
 
 /// <summary>
 /// 同步记录实体。id + 外部系统Id/类型/去重键/发生时间索引列 + json_data + 审计列。
 /// jsonb 承载从外部拉取的原始业务数据（已换算，如金额分→元）。
 /// (ExternalSystemId, ExternalId) 由 Connector 保证幂等，重复拉取只保留最新快照。
 /// </summary>
-public class SyncedRecord : BaseEntity, IFullAudit
+public class SyncedRecordEntity : BaseEntity, IFullAudit
 {
     /// <summary>来源外部系统 Id（索引列）。</summary>
     public Guid ExternalSystemId { get; set; }
diff --git a/src/modules/monitoring/Domain/Values/CredentialEntry.cs b/src/modules/monitoring/Domain/Values/CredentialEntry.cs
new file mode 100644
index 0000000..99b834f
--- /dev/null
+++ b/src/modules/monitoring/Domain/Values/CredentialEntry.cs
@@ -0,0 +1,20 @@
+namespace Monitoring.Domain.Entities;
+
+/// <summary>凭证条目（内聚于 SystemData，无独立表）。</summary>
+public class CredentialEntry
+{
+    /// <summary>类型：Cookie / Header / BearerToken / Query。</summary>
+    public string Type { get; set; } = default!;
+
+    /// <summary>键名（Cookie 名/Header 名/参数名）。</summary>
+    public string Key { get; set; } = default!;
+
+    /// <summary>值。TODO 后续加密。</summary>
+    public string Value { get; set; } = default!;
+
+    /// <summary>是否启用。</summary>
+    public bool IsEnabled { get; set; } = true;
+
+    /// <summary>备注。</summary>
+    public string? Remark { get; set; }
+}
diff --git a/src/modules/monitoring/Domain/Values/JobData.cs b/src/modules/monitoring/Domain/Values/JobData.cs
new file mode 100644
index 0000000..f905670
--- /dev/null
+++ b/src/modules/monitoring/Domain/Values/JobData.cs
@@ -0,0 +1,14 @@
+namespace Monitoring.Domain.Entities;
+
+/// <summary>同步任务 json_data 投影。</summary>
+public class JobData
+{
+    /// <summary>触发来源：scheduler / manual。</summary>
+    public string TriggerSource { get; set; } = "scheduler";
+
+    /// <summary>汇总指标（Connector 产出，如 {order_count:8283, actual_rent:9813.80}）。</summary>
+    public Dictionary<string, object?> SummaryMetrics { get; set; } = new();
+
+    /// <summary>错误信息（成功时为 null）。</summary>
+    public string? ErrorMessage { get; set; }
+}
diff --git a/src/modules/monitoring/Domain/Values/RecordData.cs b/src/modules/monitoring/Domain/Values/RecordData.cs
new file mode 100644
index 0000000..4d4012a
--- /dev/null
+++ b/src/modules/monitoring/Domain/Values/RecordData.cs
@@ -0,0 +1,14 @@
+namespace Monitoring.Domain.Entities;
+
+/// <summary>同步记录 json_data 投影：拉取到的外部原始数据。</summary>
+public class RecordData
+{
+    /// <summary>记录类型：order / finance / metric（由 Connector 定义）。</summary>
+    public string RecordType { get; set; } = default!;
+
+    /// <summary>外部业务 Id（订单号/流水号）。</summary>
+    public string ExternalId { get; set; } = default!;
+
+    /// <summary>原始数据（已换算后的业务字段，如金额已从分转元）。</summary>
+    public Dictionary<string, object?> Payload { get; set; } = new();
+}
diff --git a/src/modules/monitoring/Domain/Values/RuleData.cs b/src/modules/monitoring/Domain/Values/RuleData.cs
new file mode 100644
index 0000000..c324731
--- /dev/null
+++ b/src/modules/monitoring/Domain/Values/RuleData.cs
@@ -0,0 +1,31 @@
+using Monitoring.Domain.Enums;
+
+namespace Monitoring.Domain.Entities;
+
+/// <summary>告警规则 json_data 投影。</summary>
+public class RuleData
+{
+    /// <summary>规则名称。</summary>
+    public string Name { get; set; } = default!;
+
+    /// <summary>监控指标名（对应 JobData.SummaryMetrics 的键）。</summary>
+    public string MetricName { get; set; } = default!;
+
+    /// <summary>比较运算符：gt/gte/lt/lte/eq。</summary>
+    public string Operator { get; set; } = "gt";
+
+    /// <summary>阈值。</summary>
+    public string Threshold { get; set; } = default!;
+
+    /// <summary>严重级别。</summary>
+    public AlertSeverity Severity { get; set; } = AlertSeverity.Warning;
+
+    /// <summary>是否启用。</summary>
+    public bool IsEnabled { get; set; } = true;
+
+    /// <summary>触发冷却（秒）。</summary>
+    public int CooldownSeconds { get; set; } = 3600;
+
+    /// <summary>最近触发时间（UTC 毫秒时间戳）。</summary>
+    public long? LastTriggeredAt { get; set; }
+}
diff --git a/src/modules/monitoring/Domain/Values/SystemData.cs b/src/modules/monitoring/Domain/Values/SystemData.cs
new file mode 100644
index 0000000..1b404ec
--- /dev/null
+++ b/src/modules/monitoring/Domain/Values/SystemData.cs
@@ -0,0 +1,38 @@
+using Monitoring.Domain.Enums;
+
+namespace Monitoring.Domain.Values;
+
+/// <summary>
+/// 外部系统 json_data 投影：承载可变/扩展字段。
+/// 凭证（Cookie/Header/Token）也内聚于此，避免单独建表；Credentials 列表为空时表示无凭证。
+/// Parameters 承载 Connector 专属配置（如 u号租的 sellerId/lookbackDays）。
+/// </summary>
+public class SystemData
+{
+    /// <summary>系统显示名称。</summary>
+    public string Name { get; set; } = default!;
+
+    /// <summary>系统类型：1=UHaoZu, 100=GenericHttp。</summary>
+    public ExternalSystemTypeEnum SystemType { get; set; }
+
+    /// <summary>Base URL。</summary>
+    public string BaseUrl { get; set; } = default!;
+
+    /// <summary>轮询间隔（秒），0=用默认。</summary>
+    public int PollIntervalSeconds { get; set; }
+
+    /// <summary>是否启用。</summary>
+    public bool IsEnabled { get; set; } = true;
+
+    /// <summary>Connector 专属参数（如 sellerId/lookbackDays）。</summary>
+    public Dictionary<string, string?> Parameters { get; set; } = new();
+
+    /// <summary>凭证列表（Cookie/Header/Token），不再单独建表。</summary>
+    public List<CredentialEntry> Credentials { get; set; } = new();
+
+    /// <summary>最近同步时间（UTC 毫秒时间戳）。</summary>
+    public long? LastSyncedAt { get; set; }
+
+    /// <summary>最近同步任务 Id。</summary>
+    public Guid? LastSyncJobId { get; set; }
+}