What problem does it solve? Codebases accumulate shallow modules whose interfaces are nearly as complex as their implementations, making them hard to test and navigate. This Skill surfaces that architectural friction and proposes concrete deepening refactors instead of leaving the analysis abstract. ## Core Features & Use Cases - Hot-spot-driven exploration: Scopes the scan using git history and user direction, then applies the deletion test to find shallow modules, leaky seams, and poor locality. - Visual HTML report: Generates a self-contained Tailwind and Mermaid report in the OS temp directory with before/after diagrams, recommendation-strength badges, and ADR conflict callouts. - Grilling loop: After the user picks a candidate, walks the decision tree on constraints, seams, and tests, updating CONTEXT.md and offering ADRs as decisions crystallize. - Use Case: Point it at a subsystem where bugs keep recurring; it identifies that the Order intake pipeline is shallow, renders a before/after diagram showing the collapse into one deep module, and grills through the resulting design. ## Quick Start Ask the assistant to review the architecture of the current codebase and show deepening opportunities as an HTML report.