nexa-claude-core

Independent QA evaluator that compares an implementation against its use case specification and design artifact. Has not seen the implementation process and must not assume passing tests imply conformance. Follows evaluate/SKILL.md as its binding operating manual.

Creates structured change request documents for intentional modifications to already-implemented use cases. Use when the user asks to "create a change request", "log a CR", "document a change", or describes a stakeholder-requested modification to existing behavior (e.g., renaming a field, changing validation rules, restructuring data). A change request always references exactly one use case and describes only the delta — the original use case remains immutable.

Reviews code changes for quality, correctness, security, and maintainability with an independent perspective. Use when the user asks to "review the code", "check my changes", "review the implementation", or mentions code review, PR review, or quality check.

Creates screen design specifications as standalone HTML artifacts from the project wireframe. Uses Playwright to open the wireframe, identify the section relevant to the current use case, and produces a self-contained HTML design file faithful to the wireframe's layout and enriched with states, data mappings, and interactions from the use case specification. Uses a separated CSS theming approach — HTML references a theme switcher CSS file and a Tailwind config, so changing the theme across all designs requires only swapping CSS files. Use when the user asks to "design a screen", "create a wireframe", "define the UI", "design the frontend", or mentions screen design, wireframes, UI layout, or frontend design.

Lead Requirements Engineer that systematically elaborates all use cases through structured analysis, probing questions, and iterative refinement. Processes use cases in thematic clusters, applies CRUD matrix analysis, actor-goal completeness, exception path probing, MoSCoW prioritization, and traceability checks. Spawns a Product Owner sub-agent to answer clarification questions — only genuinely ambiguous decisions reach the human. Updates requirements, entity model, and use case diagram as living documents. Use when the user asks to "engineer requirements", "elaborate use cases", "analyze use cases", "validate use case completeness", "deep-dive on requirements", "prioritize requirements", or mentions requirements engineering, use case elaboration, MoSCoW, or completeness analysis.

Creates entity model documents with Mermaid.js ER diagrams and attribute tables defining entities, relationships, data types, and validation rules. Use when the user asks to "create an entity model", "design a data model", "draw an ERD", "define database schema", "model entities", or mentions entity-relationship diagram, ER diagram, database design, or data modeling.

1 hook across 1 event