feat: rebuild email platform and operations console

server/src/domain/entities/audit_log.rs

@@ -0,0 +1,44 @@
+use sea_orm::entity::prelude::*;
+use sea_orm::Set;
+use serde::{Deserialize, Serialize};
+
+/// 审计日志（SMTP 事件 + 管理操作）
+#[derive(Clone, Debug, PartialEq, DeriveEntityModel, Serialize, Deserialize)]
+#[sea_orm(table_name = "audit_logs")]
+pub struct Model {
+    #[sea_orm(primary_key)]
+    pub id: i64,
+    /// smtp_connect | smtp_rcpt | smtp_accept | smtp_reject | admin_* | ...
+    pub event_type: String,
+    pub source_ip: Option<String>,
+    pub helo: Option<String>,
+    pub mail_from: Option<String>,
+    pub rcpt_to: Option<String>,
+    /// accept | defer | reject | quarantine | ...
+    pub action: String,
+    pub reason: Option<String>,
+    /// 管理操作时填 user_id
+    pub operator_id: Option<String>,
+    /// 被操作资源类型：user | mailbox | email | attachment | blacklist | credit_rule
+    pub target_type: Option<String>,
+    /// 被操作资源 ID，统一使用字符串兼容不同主键类型
+    pub target_id: Option<String>,
+    /// 扩展审计上下文与批次 ID
+    #[sea_orm(column_type = "Text", nullable)]
+    pub metadata_json: Option<String>,
+    pub created_at: DateTime,
+}
+
+#[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]
+pub enum Relation {}
+
+#[async_trait::async_trait]
+impl ActiveModelBehavior for ActiveModel {
+    async fn before_save<C: ConnectionTrait>(self, _: &C, insert: bool) -> Result<Self, DbErr> {
+        let mut value = self;
+        if insert {
+            value.created_at = Set(chrono::Utc::now().naive_utc());
+        }
+        Ok(value)
+    }
+}