ci: 移除 push 触发并简化 workflow 逻辑

简化 build.yml 工作流配置，移除 push 触发事件，仅保留 workflow_dispatch 触发方式

.github/workflows/build.yml

@@ -1,7 +1,6 @@
 name: build
 
 on:
-  push:
   workflow_dispatch:
     inputs:
       version:
@@ -34,30 +33,11 @@ jobs:
         id: msg
         shell: bash
         run: |
-          if [ "${{ github.event_name }}" = "workflow_dispatch" ]; then
           {
             echo "message<<__EOF__"
             echo "${{ github.event.inputs.version }} ${{ github.event.inputs.build }}"
             echo "__EOF__"
           } >> "$GITHUB_OUTPUT"
-          elif [ "${{ github.event_name }}" = "push" ]; then
-            VERSION="$(sed -n 's/.*"version":[[:space:]]*"\([^"]*\)".*/\1/p' package.json | head -n 1)"
-            if [ -z "$VERSION" ]; then
-              echo "无法从 package.json 读取 version 字段" >&2
-              exit 1
-            fi
-            {
-              echo "message<<__EOF__"
-              echo "$VERSION build:all"
-              echo "__EOF__"
-            } >> "$GITHUB_OUTPUT"
-          else
-            {
-              echo "message<<__EOF__"
-              echo "${{ github.event.head_commit.message }}"
-              echo "__EOF__"
-            } >> "$GITHUB_OUTPUT"
-          fi
 
       - uses: actions/setup-node@v4
         with: