1.全部完成后，修改对话内容

lib/page/plan/detail/viewmodel/plan_detail_store.dart

@@ -46,6 +46,11 @@ class PlanDetailStore extends ChangeNotifier {
   ///计划详情
   PlanDetailDto planDetail = PlanDetailDto(summary: "Plan Details");
 
+  ///是否全部完成
+  bool isAllDone() =>
+      planDetail.stepsList.isNotEmpty &&
+      planDetail.stepsList.every((item) => item.stepStatus == 2);
+
   ///是否正在编辑
   bool isEdit = false;
 
@@ -56,7 +61,7 @@ class PlanDetailStore extends ChangeNotifier {
   }
 
   ///流请求工具
-  StreamUtils streamUtils = StreamUtils();
+  final StreamUtils _streamUtils = StreamUtils();
 
   ///创建计划
   void createPlan() async {
@@ -65,7 +70,7 @@ class PlanDetailStore extends ChangeNotifier {
 
     ///生成摘要---------------------------
     String summary = "";
-    streamUtils.sendStream(
+    _streamUtils.sendStream(
       "/plan/make_summary",
       data: {"plan_id": planId},
       onCall: (chunk) {
@@ -79,7 +84,7 @@ class PlanDetailStore extends ChangeNotifier {
 
     /// 生成对白-------------------------------
     String dialog = "";
-    await streamUtils.sendStream(
+    await _streamUtils.sendStream(
       "/plan/make_dialog",
       data: {"plan_id": planId},
       onCall: (chunk) {
@@ -92,7 +97,7 @@ class PlanDetailStore extends ChangeNotifier {
     );
 
     /// 生成步骤-------------------------------
-    await streamUtils.sendStream(
+    await _streamUtils.sendStream(
       "/plan/make_step",
       data: {"plan_id": planId},
       onCall: (chunk) {
@@ -115,7 +120,7 @@ class PlanDetailStore extends ChangeNotifier {
     );
 
     /// 生成步骤解释 -------------------------------
-    await streamUtils.sendStream(
+    await _streamUtils.sendStream(
       "/plan/make_step_explain",
       data: {
         "plan_id": planId,
@@ -137,7 +142,7 @@ class PlanDetailStore extends ChangeNotifier {
     );
 
     /// 生成建议 ------------------
-    await streamUtils.sendStream(
+    await _streamUtils.sendStream(
       "/plan/make_suggestion",
       data: {
         "plan_id": planId,