Merge branch 'signalr-update-audio' into verdure

Author: GreenShadeZhang

.github/workflows/build-verdure.yml

@@ -19,7 +19,7 @@ jobs:
     name: Determine variants to build
     runs-on: ubuntu-latest
     outputs:
-      variants: ${{ steps.select.outputs.variants }}
+      variants: ${{ steps.select.outputs.variants || '[]' }}
     steps:
       - name: Checkout
         uses: actions/checkout@v4
@@ -87,11 +87,11 @@ jobs:
   build:
     name: Build ${{ matrix.name }}-verdure
     needs: prepare
-    if: ${{ needs.prepare.outputs.variants != '[]' }}
+    if: ${{ needs.prepare.outputs.variants && needs.prepare.outputs.variants != '[]' }}
     strategy:
       fail-fast: false  # 单个变体失败不影响其它变体
       matrix:
-        include: ${{ fromJson(needs.prepare.outputs.variants || '[]') }}
+        include: ${{ fromJson(needs.prepare.outputs.variants) }}
     runs-on: ubuntu-latest
     container:
       image: espressif/idf:v5.5.2