Generate REST API with Express/Fastify, OpenAPI spec, validation, tests. Use when user asks to "scaffold a REST API".

Generate Angular 18+ project with Signals, standalone components, SSR, testing. Use when user asks to "scaffold an Angular app".

Systematic root cause tracing from symptoms through causal chains to actual causes. Trigger: "root cause analysis", "why is this failing", "trace the cause", "5 whys".

Designs undo plans for each deployment phase, including data migration reversibility and feature flag fallbacks. Trigger: "rollback plan", "undo strategy", "how to revert", "migration reversibility".

Designs proof-of-concept roadmaps with sprint breakdowns, prerequisites, gates, team composition, budget, and risk registers. Trigger: "PoC plan", "proof of concept", "sprint breakdown".

Severity times likelihood risk matrix generation with mitigation priorities. Trigger: "score risks", "risk matrix", "risk assessment", "severity analysis".

Identifies, assesses, and manages technical and project risks with mitigation strategies, monitoring plans, and contingency protocols. Trigger: "risk analysis", "risk register", "mitigation plan".

Implement production-grade responsive design: breakpoint strategy, fluid typography with clamp(), container queries, responsive images with srcset/sizes, and cross-device testing methodology. Use when user asks to "make responsive", "implement responsive design", or "fix layout on mobile".

Designs resilience patterns including circuit breakers, retries, bulkheads, timeouts, and chaos engineering practices. Trigger: "resilience design", "circuit breaker", "fault tolerance", "chaos engineering", "bulkhead pattern", "retry strategy".

Automated tech stack, framework, and entry point detection from repository structure. Trigger: "scan repo", "detect stack", "what technologies", "analyze repository".

Plans release trains, semantic versioning strategy, changelog generation, and release coordination. Trigger: "release plan", "versioning strategy", "changelog", "release train", "shipping schedule".

Design and implement real-time data synchronization: WebSocket vs SSE vs long polling decision, Supabase Realtime, Firebase RTDB, optimistic updates, conflict resolution, and connection resilience patterns.

Analyze and optimize database queries: EXPLAIN ANALYZE plan reading, index strategies (B-tree, GIN, GiST, partial, composite), N+1 detection in ORM code, connection pooling, and query plan regression testing.

Test strategy architecture, automation infrastructure, quality gates, quality metrics dashboards, and shift-left quality practices. Trigger: "quality engineering", "quality gates", "quality metrics", "automation architecture", "shift-left quality".

Design and implement Progressive Web App architecture: service worker caching strategies, offline patterns, Web Push notifications, install prompt UX, background sync, and Workbox configuration for production.

N+1 query detection, bottleneck identification, and resource usage analysis. Trigger: "profile performance", "find bottlenecks", "N+1 queries", "resource usage".

Load testing design, capacity planning, bottleneck analysis, caching strategies, and SLA engineering. Trigger: "performance engineering", "load testing", "capacity planning", "bottleneck", "caching", "SLA", "latency".

Defines Core Web Vitals targets, latency budgets, bundle size limits, and performance regression gates. Trigger: "performance budget", "core web vitals", "bundle size", "latency budget", "performance targets".

Profiling-based identification of hot paths, resource constraints, and throughput limiters. Trigger: "find bottlenecks", "hot paths", "performance profiling", "throughput limits".

Engineers quality formatting with ghost menus, progressive disclosure, and excellence standards for technical artifacts. Trigger: "format output", "ghost menu", "progressive disclosure", "output quality", "excellence standards".