kid-sid

Use when designing user interfaces, selecting styling, palettes, fonts, or auditing UI/UX design code.

Use when designing a relational schema — normalization (1NF–3NF), primary key strategy, modelling relationships, naming conventions, or planning a zero-downtime migration with the expand-contract pattern. For writing and tuning queries, indexes, or EXPLAIN…

Use when writing complex PostgreSQL queries, diagnosing slow queries with EXPLAIN ANALYZE, designing indexes (B-tree, GIN, partial, composite), handling concurrent writes and lock contention, or running safe live ALTER TABLE on large tables. For schema…

Use when making architecture-level React decisions — component decomposition, choosing where state should live, selecting a state manager (Context vs Redux vs Zustand) or a data-fetching library (TanStack Query vs SWR), or planning a rendering-performance…

Use when implementing advanced React patterns — designing custom hooks, using Suspense or error boundaries, applying TypeScript generics to components and hooks, or building animated UI with Framer Motion, View Transitions, or scroll-driven animations. For…

Use when configuring Kubernetes resources (Deployment, Service, Ingress, ConfigMap, Secret, HPA), sizing pod resource requests and limits, setting securityContext, or packaging a service with Helm charts. Not for writing Dockerfiles or docker-compose files —…

Use when writing or optimizing a Dockerfile or docker-compose.yml for local dev, debugging containers that behave differently from local, or reducing image size for Python and Node.js apps. Not for Kubernetes resources or Helm — use containerization.

Use when building or debugging standalone Temporal workers in Python outside of Agentex — structuring workflows and activities, enforcing determinism, handling retries and timeouts, managing state across replays, or diagnosing workflow failures. For…

Use when building or debugging apps that call the Claude API — implementing tool use, streaming, vision, prompt caching, batch processing, extended thinking, or an agentic loop with the Anthropic SDK.

Use when configuring Claude Code — installing skills or agents, writing hook configurations, setting up tool permissions, registering MCP servers, or authoring CLAUDE.md project instructions.

Use when writing Dockerfiles, setting up docker-compose for local dev, configuring Kubernetes resources (Deployment, Service, Ingress, HPA), sizing pod resource limits, or packaging a service with Helm.

Use when designing a schema, adding indexes to fix slow queries, writing a zero-downtime migration, diagnosing N+1 issues with EXPLAIN ANALYZE, or configuring connection pooling for a PostgreSQL-backed service.

End-to-end (E2E) testing patterns for user journeys, browser automation, UI state, and production-like environment validation. Use when testing the system as a black box from the user's perspective.

Use when adding feature flag support to a service, designing a percentage-based rollout, setting up A/B experiments or multivariate tests, choosing between LaunchDarkly, Unleash, and OpenFeature, writing tests for flag-gated code, or managing flag lifecycle…

Use when designing React component structure, deciding where state should live, implementing data fetching with TanStack Query, building validated forms, or optimizing rendering performance.

Use when building or debugging Temporal workflows in Python — structuring workflows and activities, enforcing determinism, handling retries and timeouts, managing state across replays, or diagnosing workflow failures.