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 those architectural friction points and proposes concrete deepening refactors, presented as a visual before/after report instead of a wall of prose. ## Core Features & Use Cases - Hot-spot-driven exploration: Scopes the scan using git history and user direction, then applies the deletion test to identify shallow modules, seam leakage, and poor locality. - Visual HTML report: Generates a self-contained HTML file in the OS temp directory using Tailwind and Mermaid via CDN, with before/after diagrams, recommendation-strength badges, and ADR conflict callouts for each candidate. - Grilling loop: After the user picks a candidate, walks the decision tree on constraints, dependencies, and module shape, updating CONTEXT.md and offering ADRs as decisions crystallize. - Use Case: Point it at a subsystem where changes keep hurting; it returns a report showing, for example, how collapsing a six-layer call pipeline into one deep module shrinks the test surface to a single interface. ## Quick Start Ask the assistant to review the architecture of the current repository and show deepening opportunities as an HTML report.