Integrate unfinished server-rs refactor worklists

server-rs/crates/module-story/src/errors.rs

@@ -1,3 +1,36 @@
-//! 剧情领域错误过渡落位。
+//! 剧情领域错误。
 //!
-//! 错误保持纯剧情规则语义，例如会话不存在、状态不允许或输入为空。
+//! 错误保持纯 story session 规则语义，例如会话字段缺失、事件内容为空或版本非法。
+
+use std::{error::Error, fmt};
+
+#[derive(Clone, Debug, PartialEq, Eq)]
+pub enum StorySessionFieldError {
+    MissingSessionId,
+    MissingRuntimeSessionId,
+    MissingActorUserId,
+    MissingWorldProfileId,
+    MissingInitialPrompt,
+    MissingNarrativeText,
+    MissingEventId,
+    InvalidVersion,
+}
+
+impl fmt::Display for StorySessionFieldError {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        match self {
+            Self::MissingSessionId => f.write_str("story_session.story_session_id 不能为空"),
+            Self::MissingRuntimeSessionId => {
+                f.write_str("story_session.runtime_session_id 不能为空")
+            }
+            Self::MissingActorUserId => f.write_str("story_session.actor_user_id 不能为空"),
+            Self::MissingWorldProfileId => f.write_str("story_session.world_profile_id 不能为空"),
+            Self::MissingInitialPrompt => f.write_str("story_session.initial_prompt 不能为空"),
+            Self::MissingNarrativeText => f.write_str("story_event.narrative_text 不能为空"),
+            Self::MissingEventId => f.write_str("story_event.event_id 不能为空"),
+            Self::InvalidVersion => f.write_str("story_session.version 必须大于 0"),
+        }
+    }
+}
+
+impl Error for StorySessionFieldError {}