Implement

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name: implement
description: 实现：根据需求文档或任务清单开始写代码。内部走 TDD 小步测试，完成后做代码评审再提交。Implement a piece of work based on a spec or set of tickets.
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Implement the work described by the user in the spec or tickets.

Use /tdd where possible, at pre-agreed seams.

Run typechecking regularly, single test files regularly, and the full test suite once at the end.

Once done, use /code-review to review the work.

Commit your work to the current branch.