improve upgrade process

frontend/src/components/RunButton.tsx

@@ -144,8 +144,12 @@ export const RunButton: FC<{ onClickRun?: MouseEventHandler, iconMode?: boolean
                   if (!exist) CopyFile('./backend-python/wkv_cuda_utils/wkv_cuda_model.py', './py310/Lib/site-packages/rwkv/model.py');
                 });
                 await CopyFile(customCudaFile, './py310/Lib/site-packages/rwkv/wkv_cuda.pyd').catch(() => {
+                  FileExists('./py310/Lib/site-packages/rwkv/wkv_cuda.pyd').then((exist) => {
+                    if (!exist) {
                       customCudaFile = '';
                       toast(t('Failed to copy custom cuda file'), { type: 'error' });
+                    }
+                  });
                 });
               } else
                 toast(t('Supported custom cuda file not found'), { type: 'warning' });

frontend/src/startup.ts

@@ -3,8 +3,8 @@ import { FileExists, ReadJson } from '../wailsjs/go/backend_golang/App';
 import {
   Cache,
   checkUpdate,
+  deleteDynamicProgramFiles,
   downloadProgramFiles,
-  forceDownloadProgramFiles,
   LocalConfig,
   refreshModels,
   saveCache
@@ -17,8 +17,9 @@ export async function startup() {
   FileExists('cache.json').then((exists) => {
     if (exists)
       downloadProgramFiles();
-    else
-      forceDownloadProgramFiles();
+    else {
+      deleteDynamicProgramFiles().then(downloadProgramFiles);
+    }
   });
   EventsOn('downloadList', (data) => {
     if (data)

frontend/src/utils/index.tsx

@@ -188,6 +188,16 @@ export function forceDownloadProgramFiles() {
   });
 }
 
+export async function deleteDynamicProgramFiles() {
+  let promises: Promise<void>[] = [];
+  manifest.programFiles.forEach(({ path }) => {
+    if ((path.endsWith('.py') && !path.includes('get-pip.py')) || path.includes('requirements') || path.endsWith('.pyd'))
+      promises.push(DeleteFile(path));
+  });
+  return await Promise.allSettled(promises).catch(() => {
+  });
+}
+
 export function bytesToGb(size: number) {
   return (size / 1024 / 1024 / 1024).toFixed(2);
 }