推进 server-rs DDD 分层与新接口接线

server-rs/crates/module-ai/src/events.rs

@@ -1,3 +1,32 @@
-//! AI 领域事件过渡落位。
-//!
-//! 用于表达任务开始、阶段完成、任务失败和结果引用挂接等跨上下文事实。
+use crate::{
+    AiResultReferenceKind, AiTaskKind, AiTaskStageKind, AiTaskStatus, AiTextChunkSnapshot,
+};
+
+#[derive(Clone, Debug, PartialEq, Eq)]
+pub enum AiTaskDomainEvent {
+    TaskCreated {
+        task_id: String,
+        task_kind: AiTaskKind,
+        owner_user_id: String,
+    },
+    TaskStatusChanged {
+        task_id: String,
+        status: AiTaskStatus,
+    },
+    StageStarted {
+        task_id: String,
+        stage_kind: AiTaskStageKind,
+    },
+    StageCompleted {
+        task_id: String,
+        stage_kind: AiTaskStageKind,
+    },
+    TextChunkAppended {
+        chunk: AiTextChunkSnapshot,
+    },
+    ResultReferenceAttached {
+        task_id: String,
+        reference_kind: AiResultReferenceKind,
+        reference_id: String,
+    },
+}