Deterministic end-to-end implementation orchestrator. Use when building net-new code or a fix that should follow the full pipeline — decompose → research → TDD loop → self-review gate → structural review. Thin: it SEQUENCES existing skills (problem-decomposer/work-scope, feature-impl, superpowers/test-driven-development, self-audit, test-fidelity, taskfile-ci-parity, structural-pr-review) in a fixed order with rigid gates; it does not re-derive them. Mirror of structural-pr-review for the build side.