Show HN：规范优先（Specification-First）Agent 辅助开发插件与验证流程
英文标题：🔶 Show HN: Specification First Agentic Development Plugin and Prove
开发者 hleichsenring 在 Hacker News 上展示了一套基于“规范优先（Specification-First）”的 Agent 自动化开发插件工作流。该方案在编写代码前强制生成格式化规范文件并建立独立 Git 分支，通过独立上下文进行规格评审与范围剪裁，再自动推进代码编写、测试验证与决策归档。这种结合了严格工程门禁（Gate）的规范驱动流程，有效降低了代码生成 Agent 的失控与幻觉风险，为 Agentic 软件工程落地提供了严谨的实践参考。
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中文
我想要一个小型的待办事项（Todo）应用。支持添加待办事项、勾选完成、筛选待办和已完成状态。仅在浏览器端运行，无需后端。
Read .spec-first/memory/MEMORY.md
Read src/main.ts
这是一个空的 Vite 初始项目，我将按照你的偏好使用 TypeScript 和 Vitest。页面刷新后待办事项需要保留吗？
是的，使用 localStorage 即可。
/spec-first:create-spec
Write 2026-10-27-7b2d-todos-first-version.yaml
规范已生成。需要我将其放到独立分支吗？
看起来没问题，继续。
Bash git worktree add -b spec/2026-10-27-7b2d …
规范 2026-10-27-7b2d 已放置在专属独立分支：包含 3 个步骤，3 条完成标准（done criteria）。
/spec-first:review-spec
Bash check-evidence.py evidence resolves: 1 spec
Agent 评审规范 2026-10-27-7b2d（采用全新上下文）
Edit 2026-10-27-7b2d-todos-first-version.yaml
裁剪后构建：移除了拖拽重排序功能，增加了空标题检查。两处修改均已应用。
/spec-first:apply-spec
计划：先实现 store，再实现列表界面，最后编写测试。继续执行？
继续。
Write src/todos.ts
Write src/TodoList.ts
Write src/todos.test.ts
Bash npm test 9 passed
Write .spec-first/decisions/2026-10-27-7b2d.yaml
构建并测试完成。已记录一条架构决策：选择 localStorage 而非 IndexedDB，因为几百条待办事项可以轻松承载。
/spec-first:deliver-spec
Bash git commit -m "feat: a first todo app (2026-10-27-7b2d)" gate: build, test passed
Bash gh pr create #12
Bash npm run dev localhost:5173
门禁检查通过，Pull Request #12 已创建。应用正运行在 localhost:5173。
English / 原文
I want a small todo app. Add todos, tick them off, filter open and done. Browser only, no backend.
Read .spec-first/memory/MEMORY.md
Read src/main.ts
It's an empty Vite starter, and I'll use TypeScript and Vitest as you prefer. Should todos survive a reload?
Yes, localStorage is fine.
/spec-first:create-spec
Write 2026-10-27-7b2d-todos-first-version.yaml
Here is the spec. Shall I put it on its own branch?
Looks right, go.
Bash git worktree add -b spec/2026-10-27-7b2d …
Spec 2026-10-27-7b2d is on its own branch: 3 steps, 3 done criteria.
/spec-first:review-spec
Bash check-evidence.py evidence resolves: 1 spec
Agent Review spec 2026-10-27-7b2d fresh context
Edit 2026-10-27-7b2d-todos-first-version.yaml
BUILD WITH CUTS. Drag to reorder is out, a check for empty titles is in. Both applied.
/spec-first:apply-spec
Plan: the store first, then the list, then the tests. Go?
Go.
Write src/todos.ts
Write src/TodoList.ts
Write src/todos.test.ts
Bash npm test 9 passed
Write .spec-first/decisions/2026-10-27-7b2d.yaml
Built and tested. One decision on record: localStorage over IndexedDB, because a few hundred todos fit easily.
/spec-first:deliver-spec
Bash git commit -m "feat: a first todo app (2026-10-27-7b2d)" gate: build, test passed
Bash gh pr create #12
Bash npm run dev localhost:5173
The gate passed and pull request #12 is open. The app runs on localhost:5173.