diff --git a/src-tauri/src/commands/ai/audit/data_change.rs b/src-tauri/src/commands/ai/audit/data_change.rs
new file mode 100644
index 0000000..92ee7ff
--- /dev/null
+++ b/src-tauri/src/commands/ai/audit/data_change.rs
@@ -0,0 +1,50 @@
+//! AR-11（方案A）：数据变更联动刷新。
+//!
+//! 工具执行成功后按映射 emit "df-data-changed" { entity, action }，
+//! 前端 store listen 该事件按 entity 调 loadProjects/loadTasks/loadIdeas 刷新列表，
+//! 取代工具执行后需手动刷新。
+//!
+//! 第四批从 audit/mod.rs 抽离,行为零变更。
+
+use tauri::{AppHandle, Emitter};
+
+/// AR-11（方案A）：工具名 → (entity, action) 映射，用于数据变更联动刷新。
+///
+/// 仅数据变更类工具返回 Some，其余工具返回 None（不 emit df-data-changed）。
+/// 映射规则：
+/// - create_project/create_idea/create_task → (project/idea/task, create)
+/// - update_project/update_task/update_idea → (..., update)
+/// - delete_project/delete_task/delete_idea/purge_project → (..., delete)
+/// - restore_project → (project, update)（恢复等同状态变更，前端走 update 刷新）
+/// - bind_directory → (project, update)（绑定目录属项目字段更新）
+pub(super) fn data_change_for_tool(name: &str) -> Option<(&'static str, &'static str)> {
+    let (entity, action) = match name {
+        "create_project" => ("project", "create"),
+        "create_task" => ("task", "create"),
+        "create_idea" => ("idea", "create"),
+        "update_project" => ("project", "update"),
+        "update_task" => ("task", "update"),
+        "update_idea" => ("idea", "update"),
+        "delete_project" | "purge_project" => ("project", "delete"),
+        "delete_task" => ("task", "delete"),
+        "delete_idea" => ("idea", "delete"),
+        "restore_project" => ("project", "update"),
+        "bind_directory" => ("project", "update"),
+        _ => return None,
+    };
+    Some((entity, action))
+}
+
+/// AR-11（方案A）：工具执行成功后按映射 emit "df-data-changed" { entity, action }。
+///
+/// 前端 store listen 该事件，按 entity 调 loadProjects/loadTasks/loadIdeas 刷新列表，
+/// 取代工具执行后需手动刷新。仅工具名命中 data_change_for_tool 映射才 emit，
+/// 其余工具（run_workflow/list_tasks 等）不 emit。emit 失败不阻断（let _ =）。
+pub(crate) fn emit_data_changed(app_handle: &AppHandle, tool_name: &str) {
+    if let Some((entity, action)) = data_change_for_tool(tool_name) {
+        let _ = app_handle.emit(
+            "df-data-changed",
+            serde_json::json!({ "entity": entity, "action": action }),
+        );
+    }
+}
diff --git a/src-tauri/src/commands/ai/audit/mod.rs b/src-tauri/src/commands/ai/audit/mod.rs
index f67cbaa..653074a 100644
--- a/src-tauri/src/commands/ai/audit/mod.rs
+++ b/src-tauri/src/commands/ai/audit/mod.rs
@@ -129,53 +129,18 @@ pub use restore::restore_pending_approvals;
 mod finalize;
 pub(crate) use finalize::{audit_finalize, audit_tool_call};
 
-/// AR-11（方案A）：工具名 → (entity, action) 映射，用于数据变更联动刷新。
-///
-/// 仅数据变更类工具返回 Some，其余工具返回 None（不 emit df-data-changed）。
-/// 映射规则：
-/// - create_project/create_idea/create_task → (project/idea/task, create)
-/// - update_project/update_task/update_idea → (..., update)
-/// - delete_project/delete_task/delete_idea/purge_project → (..., delete)
-/// - restore_project → (project, update)（恢复等同状态变更，前端走 update 刷新）
-/// - bind_directory → (project, update)（绑定目录属项目字段更新）
-fn data_change_for_tool(name: &str) -> Option<(&'static str, &'static str)> {
-    let (entity, action) = match name {
-        "create_project" => ("project", "create"),
-        "create_task" => ("task", "create"),
-        "create_idea" => ("idea", "create"),
-        "update_project" => ("project", "update"),
-        "update_task" => ("task", "update"),
-        "update_idea" => ("idea", "update"),
-        "delete_project" | "purge_project" => ("project", "delete"),
-        "delete_task" => ("task", "delete"),
-        "delete_idea" => ("idea", "delete"),
-        "restore_project" => ("project", "update"),
-        "bind_directory" => ("project", "update"),
-        _ => return None,
-    };
-    Some((entity, action))
-}
-
-/// AR-11（方案A）：工具执行成功后按映射 emit "df-data-changed" { entity, action }。
-///
-/// 前端 store listen 该事件，按 entity 调 loadProjects/loadTasks/loadIdeas 刷新列表，
-/// 取代工具执行后需手动刷新。仅工具名命中 data_change_for_tool 映射才 emit，
-/// 其余工具（run_workflow/list_tasks 等）不 emit。emit 失败不阻断（let _ =）。
-pub(crate) fn emit_data_changed(app_handle: &AppHandle, tool_name: &str) {
-    if let Some((entity, action)) = data_change_for_tool(tool_name) {
-        let _ = app_handle.emit(
-            "df-data-changed",
-            serde_json::json!({ "entity": entity, "action": action }),
-        );
-    }
-}
-
 // cache(audit/cache.rs):F-260616-05 高危工具去重缓存。
 // 第三批从本文件抽离,行为零变更。pub(super) use 供本文件 process_tool_calls 裸名调用
 // (find_cached_high_risk_result),PENDING_APPROVAL_PLACEHOLDER 供 process_tool_calls 占位回填共享。
 mod cache;
 pub(super) use cache::{find_cached_high_risk_result, PENDING_APPROVAL_PLACEHOLDER};
 
+// data_change(audit/data_change.rs):AR-11 数据变更联动刷新。
+// 第四批从本文件抽离,行为零变更。pub(crate) use 保持 emit_data_changed 对 crate 内可见
+// (chat.rs 通过 commands::ai::audit::emit_data_changed 引入并调用),data_change_for_tool 私有。
+mod data_change;
+pub(crate) use data_change::emit_data_changed;
+
 /// AE-2025-03（路径 B）：write_file 审批预览 diff 生成。
 ///
 /// 从 write_file args 取 path（旧文件路径）+ content（新内容），