implement

Implement the work described by the user in the spec or tickets.

If the user passes a ticket reference, fetch it from the issue tracker and state its title before starting. If the reference is ambiguous, ask.

Before the first edit, call the Skill tool with "principles" and read every principle that matches the work. Check them again before you call the work done.

Call the Skill tool with "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, call the Skill tool with "code-review" to review the work.

Commit your work to the current branch.