fix: use environment variable to pass full tag message to GoReleaser

- Extract complete tag message body in workflow using git format
- Pass tag message via TAG_MESSAGE environment variable
- Update goreleaser config to use .Env.TAG_MESSAGE instead of .TagBody
- Fix release notes being truncated to first paragraph only

.github/workflows/release.yml

@@ -85,6 +85,16 @@ jobs:
           go-version: '1.24'
           cache-dependency-path: backend/go.sum
 
+      - name: Get tag message
+        id: tag_message
+        run: |
+          # 获取完整的 tag message（跳过第一行标题）
+          TAG_MESSAGE=$(git tag -l --format='%(contents:body)' ${GITHUB_REF#refs/tags/})
+          # 使用 EOF 分隔符处理多行内容
+          echo "message<<EOF" >> $GITHUB_OUTPUT
+          echo "$TAG_MESSAGE" >> $GITHUB_OUTPUT
+          echo "EOF" >> $GITHUB_OUTPUT
+
       - name: Run GoReleaser
         uses: goreleaser/goreleaser-action@v6
         with:
@@ -92,6 +102,7 @@ jobs:
           args: release --clean --skip=validate
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          TAG_MESSAGE: ${{ steps.tag_message.outputs.message }}
 
   # ===========================================================================
   # Docker Build and Push

.goreleaser.yaml

@@ -56,14 +56,12 @@ release:
     name: sub2api
   draft: false
   prerelease: auto
-  name_template: "v{{.Version}}"
-  # 完全使用 tag 消息作为 release 内容
+  name_template: "Sub2API {{.Version}}"
+  # 完全使用 tag 消息作为 release 内容（通过环境变量传入）
   header: |
-    ## Sub2API {{.Version}}
-
     > AI API Gateway Platform - 将 AI 订阅配额分发和管理
 
-    {{ .TagBody }}
+    {{ .Env.TAG_MESSAGE }}
 
   footer: |