{"file":".trellis/spec/backend/index.md","reason":"后端检查入口规范"}
{"file":".trellis/spec/backend/quality-guidelines.md","reason":"验证测试覆盖与质量"}
{"file":".trellis/spec/backend/error-handling.md","reason":"验证 API 错误行为"}
{"file":".trellis/tasks/08-07-file-preview-encoding/prd.md","reason":"逐条核验验收标准"}