Desenvolvimento

Differential abundance testing for microbiome data using compositionally-aware methods like ALDEx2, ANCOM-BC2, and MaAsLin2. Use when identifying taxa that differ between experimental groups while accounting for the compositional nature of microbiome data.

Use when implementing or debugging ANY network request, API call, or data fetching. Covers fetch API, axios, React Query, SWR, error handling, caching strategies, offline support.

Automated code review with security scanning, quality metrics, and best practices analysis. Use when reviewing code for: (1) Security vulnerabilities and common attack vectors, (2) Code quality issues and maintainability concerns, (3) Performance bottlenecks and optimization opportunities, (4) Best practices and design patterns, (5) Test coverage and testing strategies, (6) Documentation quality a

Analyze test coverage gaps and generate tests to improve coverage. Use when improving test coverage, finding untested code, or writing missing tests.

Pro mode — engineering standard enforcement. Forces senior-engineer behavior: root-cause discipline, layer awareness, current-gen API verification, blast-radius thinking, caller-first API design, no stubs, no sycophantic agreement, no unverified assumptions. Invoke via /prodev or 'prodev' — always run via Skill tool, never skip or summarize.

"setup" = install testing infra only. "check" = audit gaps and report, don't write tests. "full" or omitted = setup + audit + write + run + verify.

Use when creating LibreChat agents, writing agent system prompts, configuring agent capabilities (file search, code interpreter, tools, artifacts), managing agent sharing/permissions, or debugging agent behavior. Also use for agent-based access control patterns.

Run linters after code changes to verify code quality. Use this skill after completing code modifications to catch and fix any linting issues.

Comprehensive Test Driven Development guide for engineering subagents with multi-framework support, coverage analysis, and intelligent test generation

Use when starting feature work that needs isolation from current workspace or before executing implementation plans - creates isolated git worktrees with smart directory selection and safety verification

Fast headless browser for QA testing and site dogfooding. Navigate any URL, interact with elements, verify page state, diff before/after actions, take annotated screenshots, check responsive layouts, test forms and uploads, handle dialogs, and assert element states. ~100ms per command. Use when you need to test a feature, verify a deployment, dogfood a user flow, or file a bug with evidence. Use w

Esta skill oferece um framework de engenharia de software baseado na metodologia dialética de Mao Tsé-Tung, abrangendo todo o ciclo de vida do desenvolvimento, do planejamento estratégico à revisão de projetos, e operando em modos passivo e ativo para diversas tarefas.