fix: 修复CI workflow缺少checkout步骤和路径错误

.github/workflows/build.yml

@@ -17,24 +17,21 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - run: |
-          cd schedule_converter
-          go mod download
+      - uses: actions/checkout@v4
+
+      - name: Download dependencies
+        run: go mod download
 
       - name: Build Linux AMD64
-        run: |
-          cd schedule_converter
-          CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -ldflags="-s -w" -o ${{ env.APP_NAME }}-linux-amd64 .
+        run: CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -ldflags="-s -w" -o ${{ env.APP_NAME }}-linux-amd64 .
 
       - name: Build Windows AMD64
-        run: |
-          cd schedule_converter
-          CGO_ENABLED=0 GOOS=windows GOARCH=amd64 go build -ldflags="-s -w" -o ${{ env.APP_NAME }}-windows-amd64.exe .
+        run: CGO_ENABLED=0 GOOS=windows GOARCH=amd64 go build -ldflags="-s -w" -o ${{ env.APP_NAME }}-windows-amd64.exe .
 
       - name: Upload artifacts
         uses: actions/upload-artifact@v4
         with:
           name: ${{ env.APP_NAME }}
           path: |
-            schedule_converter/${{ env.APP_NAME }}-linux-amd64
-            schedule_converter/${{ env.APP_NAME }}-windows-amd64.exe
+            ${{ env.APP_NAME }}-linux-amd64
+            ${{ env.APP_NAME }}-windows-amd64.exe