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Debug X (Twitter) API issues including stale queryIds, feature mismatches, and partial errors. Use when timeline/bookmarks/replies fail with "Query: Unspecified", "features cannot be null", or HTTP 400 errors.

Create GitHub issues with duplicate detection and codebase analysis. Use when you discover a bug, improvement, or issue that wasn't in the original scope/spec during development. Triggers on phrases like "create an issue", "file a bug", "this should be tracked", "we should fix this later", "out of scope issue", "noticed a problem", "found a bug".

Build terminal UIs with OpenTUI/React. Use when creating screens, components, handling keyboard input, managing scroll, or navigating between views. Covers JSX intrinsics, useKeyboard, scrollbox patterns, and state preservation.

Write and debug Bun tests with proper mocking, coverage, and isolation. Use when writing tests, debugging test failures, setting up test infrastructure, mocking fetch/modules, or improving test coverage.