What problem does it solve? When you need to understand why a codebase behaves a certain way, how a feature is wired across modules, or what likely caused a regression, ad-hoc guessing wastes time. This Skill performs grounded, read-only repository analysis and returns a ranked synthesis that clearly separates evidence from inference. ## Core Features & Use Cases - Ranked Synthesis: Competing explanations are compared and ranked by strength of supporting evidence, each with an explicit confidence level. - Evidence vs Inference Boundaries: Every claim is labeled as direct evidence (with concrete file references), inference, or unknown, so nothing is overclaimed. - Parallel Exploration Lanes: For complex questions, bounded parallel lanes inspect code paths, configuration, and tests independently before synthesis. - Use Case: Ask why a CI workflow fails only on release branches, and receive a ranked table of explanations backed by specific file and line references, plus a list of what the repository cannot resolve. ## Quick Start Ask the agent to analyze why a specific behavior occurs in the repository, for example: analyze why the build fails on the Turbopack path.