build-backend

Description

Backend implementation skill for the /build SDD stack. Reads requirements.md (API contracts, data model), plan.md (dependency-ordered task groups), design-tokens.css, and the design source — track-dependent: on the claude-code track the mockups in specs/<phase>/mockups/ (they ARE the design, no handover doc) plus docs/decisions.md for non-visual choices; on the external track a bare screen→image index in handover.md pointing at the exported images. Implements plan.md groups wave-by-wave — topologically sorted by Depends-on, non-overlapping file sets per agent, Opus for architectural/data/API groups, Sonnet for leaf/UI/config — then integration-tests every API contract in requirements.md (every endpoint, every error path, both 401 cases). Runs inline in the /build session; wave agents never commit, never start servers, never address the user. Enforces the shared test standard (references/test-standard.md) on every test written. Returns without a terminal state — the /build orchestrator runs backend-compliance. A reusable SKILL.md agent skill by anhtrinh919.

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Capabilities

• SKILL.md package