What problem does it solve? Deep architectural reviews often miss interface defects because auditors focus inside modules while contract drift hides at the seams between subsystems. This Skill decomposes a codebase into horizontal scopes plus a dedicated seam audit, producing standardized scores and a consolidated report without touching code until the operator approves. ## Core Features & Use Cases - Boundary-First Decomposition: Partitions a repository into 3-6 cohesive horizontal scopes plus one cross-boundary seam auditor covering API, persistence, event, config, and auth contracts. - Standardized Scoring Calibration: Applies a fixed severity rubric (Critical <7.0 through Exemplary 9.5-10) so scores stay consistent across agents and passes. - Mandatory Approval Gate: Writes per-scope markdown reports and a master audit report, then stops for explicit operator approval before any remediation with two-phase machine verification. - Use Case: Before a major release, run the protocol against a full-stack web app to catch drift between backend OpenAPI schemas and frontend typed clients, then approve only the P1 security fixes. ## Quick Start Ask the agent to run a boundary review of this repository, partition it into scopes, audit the seams, and present the scorecard for approval.