增加打包条件，仅当desktop-client下面的文件有修改时才进行打包。

.github/workflows/desktop-client-dev.yml

@@ -6,7 +6,37 @@ on:
       - 'v*'  # 仅在推送 v 开头的 tag 时触发打包
 
 jobs:
+  check-changes:
+    runs-on: ubuntu-latest
+    outputs:
+      changed: ${{ steps.check.outputs.changed }}
+    steps:
+      - name: 准备代码
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: 检查 desktop-client 是否有变更
+        id: check
+        run: |
+          CURRENT_TAG="${{ github.ref_name }}"
+          PREV_TAG=$(git tag -l 'v*' --sort=-v:refname | grep -Fxv "$CURRENT_TAG" | head -1)
+          if [ -n "$PREV_TAG" ]; then
+            BASE="$PREV_TAG"
+          else
+            BASE=$(git rev-list --max-parents=0 HEAD)
+          fi
+          if git diff --name-only "$BASE" "${{ github.sha }}" | grep -q '^desktop-client/'; then
+            echo "changed=true" >> "$GITHUB_OUTPUT"
+            echo "desktop-client 目录存在变更 (${BASE}..${{ github.sha }})，继续打包"
+          else
+            echo "changed=false" >> "$GITHUB_OUTPUT"
+            echo "desktop-client 目录无变更，跳过打包"
+          fi
+
   build:
+    needs: check-changes
+    if: needs.check-changes.outputs.changed == 'true'
     runs-on: ${{ matrix.os }}
 
     strategy: