gruckion

Programmatically update marathon-ralph state file using deterministic jq commands. Use this instead of manually editing the JSON file.

Autonomous long-running development from specifications. Use when user wants to build an application from a spec file, run continuous development, or automate feature implementation. Triggers on phrases like "marathon this", "build from spec", "autonomous development", "keep coding until done".

Detects project type, package manager, and monorepo structure. Returns correct commands for test/build/lint/dev. Run at project initialization and cache results in state. Use before running any build/test commands.

Configure Playwright for E2E testing. Use when setting up end-to-end tests, when no E2E framework is detected, or when the user asks to configure browser testing.

Configure Vitest for unit and integration testing. Use when setting up a test framework, when no test runner is detected, or when the user asks to configure testing.

Visually verify implemented features work correctly before marking complete. Use when testing UI changes, verifying web features, or checking user flows work in the browser.

Write Playwright E2E tests using fixtures and best practices. Use when creating E2E tests, writing browser automation tests, or testing user flows.

Programmatically update marathon-ralph state file using deterministic jq commands. Use this instead of manually editing the JSON file.

Guide for creating effective skills. This skill should be used when users want to create a new skill (or update an existing skill) that extends Claude's capabilities with specialized knowledge, workflows, or tool integrations.

Produce one or more end-to-end UI walkthrough demo videos for a pull request, issue, branch, ticket, local diff, or local feature so reviewers can see the changed application flow. Use when the user asks for a UI walkthrough, PR demo video, feature demo video, screen recording, visual review artifact, or asks to understand what changed in a UI flow.