How To De-Slop A Codebase Ruined By AI (with one skill)

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• Argues that AI accelerates software entropy: codebases degrade faster when AI generates code without architectural discipline, accumulating “slop” — shallow modules, duplicated logic, unclear boundaries.
• Positions deep modules (a concept from John Ousterhout’s A Philosophy of Software Design) as the architectural defence: well-defined interfaces with complex hidden implementations give AI agents clear targets and reduce the surface area for slop.
• Practical path: AI-assisted refactoring fundamentals, not from-scratch rewrites — the goal is progressive densification of the codebase, not a big-bang restructure.
• Cross-column note: overlaps directly with the vibe-coding-applications journal — architecture discipline as AI scales is a recurring theme.