What problem does it solve? Understanding how an unfamiliar subsystem works requires tracing code paths across many files, which is slow and error-prone when done manually. This Skill answers "how does X work" questions by exploring the codebase and producing a senior-engineer-level architectural explanation. ## Core Features & Use Cases - Complexity Assessment: Routes simple questions to a single-pass explainer and complex, multi-file questions to parallel explorer agents. - Parallel Exploration: Decomposes subsystem questions into 2-4 exploration angles, each investigated by a read-only subagent using structured prompt templates. - Synthesized Explanations: Merges explorer findings into a unified explanation with Overview, Key Concepts, How It Works, Where Things Live, and Gotchas sections, including mermaid diagrams where useful. - Use Case: Before modifying an authentication flow, ask how login sessions are validated and receive a walkthrough of the entry points, call chain, key abstractions, and pitfalls with exact file references. ## Quick Start Ask how the game scoring flow works in this repository to get an architectural walkthrough of the relevant subsystem.