diff --git a/packages/shared/src/contracts/editorAgent.ts b/packages/shared/src/contracts/editorAgent.ts
index b91c3a39a..5b2de4da6 100644
--- a/packages/shared/src/contracts/editorAgent.ts
+++ b/packages/shared/src/contracts/editorAgent.ts
@@ -1,9 +1,6 @@
 // 画布Agent对话契约：会话元数据存 SpacetimeDB，消息正文整体存 OSS（editor-agent/{conversationId}.json）。
 
 export const EDITOR_AGENT_MAX_ATTACHMENTS = 9;
-export const EDITOR_AGENT_TITLE_MAX_CHARS = 20;
-export const EDITOR_AGENT_DEFAULT_CONVERSATION_TITLE = '新对话';
-export const EDITOR_AGENT_MESSAGES_DOCUMENT_VERSION = 1;
 
 export type EditorAgentMessageRole = 'user' | 'assistant' | 'system';
 
diff --git a/server-rs/crates/shared-contracts/src/editor_agent.rs b/server-rs/crates/shared-contracts/src/editor_agent.rs
index e93d1bfdb..ffa18e562 100644
--- a/server-rs/crates/shared-contracts/src/editor_agent.rs
+++ b/server-rs/crates/shared-contracts/src/editor_agent.rs
@@ -6,7 +6,7 @@ use serde::{Deserialize, Serialize};
 pub const EDITOR_AGENT_MAX_ATTACHMENTS: usize = 9;
 pub const EDITOR_AGENT_TITLE_MAX_CHARS: usize = 20;
 pub const EDITOR_AGENT_DEFAULT_CONVERSATION_TITLE: &str = "新对话";
-pub const EDITOR_AGENT_MESSAGES_DOCUMENT_VERSION: u32 = 1;
+pub const EDITOR_AGENT_MESSAGES_DOCUMENT_VERSION: u32 = 2;
 
 #[derive(Clone, Copy, Debug, Serialize, Deserialize, PartialEq, Eq)]
 #[serde(rename_all = "lowercase")]