subagent-driven-development

Use when a task takes >1 hour OR touches >1 module — splits the work into atomic ≤5-minute units and dispatches three subagents per unit (implementer / spec-reviewer / code-quality-reviewer). The implementer works under the TDD iron law; the two reviewers produce verdicts (PASS / PASS_WITH_NOTES / NEEDS_REVISION) grounded in the 7 standards + 2 rubrics + 2 checklists functional-copied from `domain-teams:code-team`. SDD — Subagent-Driven Development — parallel review.