wealthfolio

How to run Wealthfolio E2E tests correctly. Use this skill whenever you are about to run, execute, or trigger Playwright E2E tests — including running a single spec file, the full test suite, or checking whether E2E tests pass. Also use it when setting up the environment for E2E tests or troubleshooting E2E test failures. Do NOT skip this skill just because the task seems simple — the environment setup is mandatory and skipping it leads to silent failures.

React useEffect best practices from official docs. Use when writing/reviewing useEffect, useState for derived values, data fetching, or state synchronization. Teaches when NOT to use Effect and better alternatives.