What problem does it solve? Turning an architecture document into working code often leads to duplicated logic, ignored project conventions, and untested implementations. This Skill guides an AI coding agent through a disciplined implementation workflow that reads the design first, reuses existing code, follows TDD, and verifies standards compliance before handoff. ## Core Features & Use Cases - Design-Driven Implementation: Reads architecture and requirements from the Circle project output directory and implements exactly what was designed, flagging over-engineered designs before coding. - Reuse Survey & Standards Gate: Requires an explicit reuse decision (REUSE/EXTEND/EXTRACT/NEW) for each unit of work and enforces project coding standards from AGENTS.md, CLAUDE.md, and rule files with a compliance table. - TDD Workflow & Context Sharding: Runs red-green-refactor cycles by default and supports task-level context sharding to load only the current task, reducing token usage. - Use Case: After running the architecture role on a new API feature, invoke this Skill to implement the endpoints with tests, following existing codebase patterns, and receive implementation notes plus a standards compliance report. ## Quick Start Ask the agent to implement the feature described in the current architecture design using the impl role, following TDD and existing codebase patterns.
