fix: 将 Gitea 配置迁移到 ~/.gitea/config.yaml 多账号配置体系

- 新增 _get_gitea_config.py 从 YAML 读取 URL/repo/token
- _common.sh 改为通过 eval python 脚本加载配置
- GITEA_CICD_SETUP.md / DEV_AGENT.md / QE_AGENT.md 更新文档
- CI 工作流改用 ${{ gitea.server_url }} / ${{ gitea.repository }}

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

.gitea/workflows/auto-issue.yml

@@ -18,10 +18,7 @@ jobs:
           RUN_URL="${{ github.event.workflow_run.html_url }}"
           COMMIT_MSG="${{ github.event.workflow_run.head_commit.message }}"
 
-          curl -s -X POST "${{ env.GITEA_URL }}/api/v1/repos/${{ env.GITEA_REPO }}/issues" \
+          curl -s -X POST "${{ gitea.server_url }}/api/v1/repos/${{ gitea.repository }}/issues" \
             -H "Authorization: token ${{ secrets.GITEA_TOKEN }}" \
             -H "Content-Type: application/json" \
             -d "{\"title\":\"CI Failure: ${COMMIT_MSG}\",\"body\":\"## CI 测试失败\n\n- **Commit:** ${SHA_SHORT}\n- **Branch:** ${BRANCH}\n- **工作流:** ${RUN_URL}\n\n请检查上述链接查看失败详情。\n\n### 下一步\n- [ ] 分析失败原因\n- [ ] 修复代码\n- [ ] 提交 PR 触发 CI 重测\",\"labels\":[\"ci-failure\",\"agent-task\"]}"
-        env:
-          GITEA_URL: https://git.zywl.me
-          GITEA_REPO: zeekrAI/document_analyzer