TanStack Query best practices for Angular. Covers query/mutation patterns, cache invalidation, and query key factories for server state management. Activates when working with @tanstack/angular-query-experimental. Do not use for NgRx Effects, manual HTTP caching, or RxJS-based server state. Install alongside angular-best-practices for full coverage.
Modern Angular best practices for building performant, maintainable Angular 17+ applications. Covers Signals, RxJS, components, templates, styles, performance, SSR, testing, forms, routing, accessibility, and architecture — with code examples and impact ratings for every rule. Use this skill whenever the user is working on Angular code of any kind: components, services, templates, stylesheets, routes, tests, or configuration. This applies to editing .component.ts, .service.ts, .html templates, .scss/.css styles, .spec.ts tests, .routes.ts files, store files, and any general .ts file in an Angular project. Look for angular.json, nx.json, or @angular/core imports as project indicators. Do not use for AngularJS (1.x), React, Vue, or non-Angular TypeScript projects.
Build Rails + Inertia.js applications from scratch through production. Full lifecycle - setup, pages, forms, validation, shared data, authentication. Covers React/Vue/Svelte frontends with Vite bundling. Includes cookbook for shadcn/ui, modals, meta tags, and error handling.
Build Ruby on Rails features from scratch through production. Full lifecycle - build, debug, test, optimize, refactor. Follows Vanilla Rails philosophy (37signals/DHH), SOLID principles, and Rails 8 patterns.
Deploy to Vercel preview and run Playwright E2E tests against staging database. Use when user says "vercel e2e test", "test on vercel", "deploy and test", "e2e on staging", or "preview deploy test".
Kill all running local development processes (worker, edge functions, dev server), wait for termination, then restart them. Dev server runs on port 8080. Use when user says "boot local", "restart local", "reboot dev", or needs to refresh local services.
DEPRECATED: These conventions apply to the Squad CLI tool (create-squad), which is a separate project. Rally uses a different dependency stack.
Set up a new Inertia Rails project or add Inertia to an existing Rails application. Use when creating new projects, configuring Inertia, or setting up the development environment with React, Vue, or Svelte.
Comprehensive best practices for Inertia Rails development. Use when writing, reviewing, or refactoring Inertia.js Rails applications with React, Vue, or Svelte frontends. Covers server-side setup, props management, forms, navigation, performance, security, and testing patterns.
Execute a Carmack Council plan task by task. Use when explicitly asked to implement a plan, do a "council implement", "carmack implement", "council build", or invoke /council-implement. Reads the output of /council-plan and builds each task sequentially, loading the relevant expert's reference document per task. Verifies after each task. Produces an implementation log for /council-review. Stack: Next.js App Router / React / TypeScript / tRPC / Prisma / Neon / Clerk.
Data-Juicer Agents installation and setup guide: environment setup, dependency installation, version verification, common issues. Trigger keywords: install, setup, environment configuration, pip install, uv install, djx command not found, ModuleNotFoundError, version issues, Python version. Use for first-time installation, environment problems, installation failures, or version incompatibilities. Related skills: djx_auth (authentication), data-juicer (main flow).
Guidance for managing R package lifecycle according to tidyverse principles using the lifecycle package. Use when: (1) Setting up lifecycle infrastructure in a package, (2) Deprecating functions or arguments, (3) Renaming functions or arguments, (4) Superseding functions, (5) Marking functions as experimental, (6) Understanding lifecycle stages (stable, experimental, deprecated, superseded), or (7) Writing deprecation helpers for complex scenarios.
Use this skill when the user asks to update dependencies, upgrade packages, update npm packages, or keep the project up to date. Trigger phrases: "update dependencies", "upgrade packages", "npm update", "update npm".
Comprehensive assistance with RevenueCat in-app subscriptions and purchases
Analyze and address technical debt in codebases.
Initialize a new blog article with interactive prompts for title, description, tags, and image. Automatically generates slug from title and validates uniqueness.
Standardizes Model Observers for handling side-effects of model events.
Creates or refactors Business Logic into Service classes using MCP-Aware standards.
Standardizes Events and Listeners for decoupled architecture.
