feat: add AI retouch task center

suixinkanTests/MessageCenterViewModelTests.swift

@@ -178,6 +178,44 @@ final class MessageCenterViewModelTests: XCTestCase {
 
         XCTAssertEqual(failureMessage, "删除失败: server down")
     }
+
+    func testAIRetouchMessageExposesTaskActionAndParsesDirectBatchId() {
+        let message = makeMessage(
+            id: 14,
+            type: 14,
+            extraData: ["ai_retouch_batch_id": .number(59)]
+        )
+        let viewModel = MessageDetailViewModel(message: message)
+
+        XCTAssertTrue(viewModel.showsAIRetouchTaskAction)
+        XCTAssertEqual(viewModel.aiRetouchBatchId, 59)
+    }
+
+    func testAIRetouchMessageParsesNestedStringBatchIdAndFallsBackWhenInvalid() {
+        let nested = makeMessage(
+            id: 15,
+            type: 14,
+            extraData: ["data": .object(["ai_retouch_batch_id": .string(" 61 ")])]
+        )
+        let wrapped = makeMessage(
+            id: 17,
+            type: 14,
+            extraData: ["data": .string(#"{"ai_retouch_batch_id":63}"#)]
+        )
+        let missing = makeMessage(id: 16, type: 14, extraData: [:])
+        let manualRetouch = makeMessage(
+            id: 10,
+            type: 10,
+            extraData: ["ai_retouch_batch_id": .number(59)]
+        )
+
+        XCTAssertEqual(MessageDetailViewModel(message: nested).aiRetouchBatchId, 61)
+        XCTAssertEqual(MessageDetailViewModel(message: wrapped).aiRetouchBatchId, 63)
+        XCTAssertTrue(MessageDetailViewModel(message: missing).showsAIRetouchTaskAction)
+        XCTAssertNil(MessageDetailViewModel(message: missing).aiRetouchBatchId)
+        XCTAssertFalse(MessageDetailViewModel(message: manualRetouch).showsAIRetouchTaskAction)
+        XCTAssertNil(MessageDetailViewModel(message: manualRetouch).aiRetouchBatchId)
+    }
 }
 
 @MainActor
@@ -226,12 +264,17 @@ private struct TestError: LocalizedError {
     var errorDescription: String? { message }
 }
 
-private func makeMessage(id: Int, isRead: Bool = false) -> MessageItem {
+private func makeMessage(
+    id: Int,
+    isRead: Bool = false,
+    type: Int = 1,
+    extraData: [String: MessageJSONValue]? = nil
+) -> MessageItem {
     MessageItem(
         id: id,
         receiverId: 1,
         receiverType: "staff",
-        type: 1,
+        type: type,
         typeName: "系统通知",
         title: "系统通知",
         content: "消息内容",
@@ -240,6 +283,7 @@ private func makeMessage(id: Int, isRead: Bool = false) -> MessageItem {
         readAt: "",
         pushChannel: 1,
         pushChannelName: "站内信",
+        extraData: extraData,
         createdAt: "2026-07-09 10:00:00",
         updatedAt: "2026-07-09 10:00:00"
     )