octopus-researcher

Comprehensive Mastra framework guide for building agents, workflows, tools, memory, workspaces, and storage with current APIs. Use for documentation lookup, API verification, TypeScript setup, common errors, migrations, and `mastra api` CLI tasks: inspect or call resources on local, Mastra platform, or remote servers.

Self-contained guide to writing, reviewing, and maintaining high-quality tests with AI assistance. Defends against three failure modes: fig-leaf tests (pass without verifying behavior), evasion (existing tests weakened to mask real bugs), and self-description drift (a test file's comments or names claim a stronger guarantee than its assertions deliver). Its core discipline is empirical mutation review — break the implementation, confirm a test goes red, revert — not just reading tests. Router skill — loads narrow workflow files by task intent. Covers single-test writing, single-file review, suite-scale audit, failing-test response, and framework-specific pitfalls for Vitest and bun:test. Use when writing new tests, reviewing tests in a PR, auditing a test suite at scale, responding to a failing test, or auditing existing tests for quality.