Write and review feature specifications to staff-engineer standards. Skeleton-first drafting with a hard Open Questions gate, research against market leaders, an implementation breakdown into phases and steps that feeds om-auto-create-pr, and a severity-ranked architectural review format. Use when starting a new spec or reviewing one.

Build production-ready systems with stability patterns: circuit breakers, bulkheads, timeouts, and retry logic. Use when the user mentions "production outage", "circuit breaker", "timeout strategy", "deployment pipeline", "chaos engineering", "bulkhead pattern", "retry with backoff", or "health checks". Also trigger when designing resilient microservices, planning zero-downtime deployments, or investigating cascading failure scenarios. Covers capacity planning, health checks, and anti-fragility

Design scalable distributed systems using structured approaches for load balancing, caching, database scaling, and message queues. Use when the user mentions "system design", "scale this", "high availability", "rate limiter", "design a URL shortener", "system design interview", "capacity planning", or "distributed architecture". Also trigger when estimating infrastructure requirements, choosing between microservices and monoliths, or designing for millions of concurrent users. Covers common syst

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Create CodeTour `.tour` files — persona-targeted, step-by-step walkthroughs with real file and line anchors. Use for onboarding tours, architecture walkthroughs, PR tours, RCA tours, and structured "explain how this works" requests.

Transform product requirements into executable technical architecture. Use when users request: (1) Technical/system architecture design, (2) Tech stack selection, (3) Architecture from PRD, (4) Deployment strategy, (5) Architecture review. Provides workflows from requirements to deployment with tech stack templates. Triggers: architecture, tech stack, system design, deployment, infrastructure. | 将产品需求转化为技术架构。触发词：架构设计、技术架构、系统架构、技术选型、部署方案、基础设施。

Get a second opinion from Gemini 3 Pro with Google Search grounding and vision. Use when you need real-time web information, want to verify facts, need a different perspective on a technical question, want to consult another AI model, or need to analyze images.

Threat modeling methodologies using STRIDE, attack trees, and risk assessment for proactive security analysis. Use when designing secure systems, conducting security reviews, or identifying potential attack vectors in applications.