implement-issue

Announce at start: "Using implement-issue to run orchestrator for #$ISSUE against $BRANCH"

| setup | default | fetch, worktree, research, evaluate, plan | | implement | per-task | execute each task from plan | | task-review | spec-reviewer | verify task achieved goal | | fix | per-task | address review findings | | simplify | cdd-code-simplifier | clean up code | | test | bats-test-validator | run test suite (shellcheck + BATS) |

| lint | default | run shellcheck and actionlint | | review | code-reviewer | internal code review | | pr | default | create/update PR | | spec-review | spec-reviewer | verify PR achieves issue goals | | code-review | code-reviewer | final code quality check | | complete | default | post summary |