feat(notify-all): 加 channels input 选择通知通道 (v1.2.0)

新 input:
  channels: 默认 'both'（同时推 Bark + 发邮件）
           可选 'bark'（只推 Bark）/ 'email'（只发邮件）

实现：composite step 加 'if' 条件
  Push to Bark:  if ${{ inputs.channels != 'email' }}
  Send email:    if ${{ inputs.channels != 'bark' }}

兼容：未传 channels 时默认 both，向后兼容 v1.1.x 用法。

README.md / docker-gitea/docs/ci-actions.md 同步更新。

notify-all/action.yml

@@ -12,6 +12,10 @@ inputs:
   status:
     description: 'Build job status (caller passes ${{ needs.<job>.result }})'
     required: true
+  channels:
+    description: 'Notification channels: both (default) / bark / email'
+    required: false
+    default: 'both'
   title:
     description: 'Notification title'
     required: false
@@ -74,7 +78,9 @@ runs:
         echo "value=${SHORT}" >> "$GITHUB_OUTPUT"
 
     # 2. Push to Bark（链式调 sibling action，完整 URL 因为 act_runner 0.2.11 不支持 ./relative）
+    #    默认走 bark + email (channels=both)，可传 channels=bark 只推 bark / channels=email 只发邮件
     - name: Push to Bark
+      if: ${{ inputs.channels != 'email' }}
       uses: http://gitea:3000/gitea_admin/ci-actions/notify-bark@v1.1.2
       with:
         device_key: ${{ inputs.bark_device_key }}
@@ -92,6 +98,7 @@ runs:
 
     # 3. Send email
     - name: Send email
+      if: ${{ inputs.channels != 'bark' }}
       uses: http://gitea:3000/gitea_admin/ci-actions/notify-email@v1.1.2
       with:
         smtp_host: ${{ inputs.smtp_host }}