Feat: support agent version history. (#6130)

### What problem does this PR solve?
Add history version save
- Allows users to view and download agent files by version revision
history

![image](https://github.com/user-attachments/assets/c300375d-8b97-4230-9fc4-83d148137132)

_Briefly describe what this PR aims to solve. Include background context
that will help reviewers understand the purpose of the PR._

### Type of change

- [ ] Bug Fix (non-breaking change which fixes an issue)
- [x] New Feature (non-breaking change which adds functionality)
- [ ] Documentation Update
- [ ] Refactoring
- [ ] Performance Improvement
- [ ] Other (please describe):

---------

Co-authored-by: Kevin Hu <kevinhu.sh@gmail.com>

web/src/services/flow-service.ts

@@ -6,6 +6,8 @@ const {
   getCanvas,
   getCanvasSSE,
   setCanvas,
+  getListVersion,
+  getVersion,
   listCanvas,
   resetCanvas,
   removeCanvas,
@@ -29,6 +31,14 @@ const methods = {
     url: setCanvas,
     method: 'post',
   },
+  getListVersion: {
+    url: getListVersion,
+    method: 'get',
+  },
+  getVersion: {
+    url: getVersion,
+    method: 'get',
+  },
   listCanvas: {
     url: listCanvas,
     method: 'get',
@@ -63,6 +73,6 @@ const methods = {
   },
 } as const;
 
-const chatService = registerServer<keyof typeof methods>(methods, request);
+const flowService = registerServer<keyof typeof methods>(methods, request);
 
-export default chatService;
+export default flowService;