ci: 添加最小化测试 workflow

目的：
- 诊断 Gitea Actions 环境变量
- 检查可用命令
- 测试网络连接

.gitea/workflows/test.yml

@@ -0,0 +1,35 @@
+name: Test Workflow
+
+on:
+  push:
+    tags:
+      - 'v*'
+
+jobs:
+  test:
+    name: Test Environment
+    runs-on: ubuntu-latest
+    
+    steps:
+    - name: Print environment variables
+      run: |
+        echo "=== Environment Variables ==="
+        echo "GITEA_REF_NAME: ${{ gitea.ref_name }}"
+        echo "GITEA_SHA: ${{ gitea.sha }}"
+        echo "GITEA_REPOSITORY: ${{ gitea.repository }}"
+        echo "GITEA_TOKEN: ${GITEA_TOKEN:0:10}..."
+        echo "GITEA_SERVER_URL: $GITEA_SERVER_URL"
+        echo "GITEA_REPOSITORY: $GITEA_REPOSITORY"
+        echo ""
+        
+        # 检查可用命令
+        echo "=== Available Commands ==="
+        which git && echo "✅ git available" || echo "❌ git not found"
+        which curl && echo "✅ curl available" || echo "❌ curl not found"
+        which zip && echo "✅ zip available" || echo "❌ zip not found"
+        which jq && echo "✅ jq available" || echo "❌ jq not found"
+        echo ""
+        
+        # 检查网络
+        echo "=== Network Test ==="
+        curl -I https://sh.rustup.rs | head -1