gtkatakura

Review and refactor TypeScript code by applying project coding patterns and conventions. Use when the user asks for a code review, refactor, or quality check on TypeScript files.

Enforces TypeScript code patterns: factory/companion-object pattern instead of classes, type aliases over interfaces, and no `this` keyword. Use when writing new TypeScript code, creating services/managers/stateful modules, defining types, or reviewing TypeScript for pattern compliance.