boundary-enforcer

References PLAN.md and architecture maps to forbid agents from leaking domain boundaries or mixing monolithic files. Covers DDD bounded contexts, context maps, relationship patterns, architecture enforcement tools (ArchUnit, Spring Modulith, ContextCov), modular monolith patterns, and layered enforcement strategy. Use when the user needs to (1) enforce domain boundaries in AI-generated code, (2) prevent domain leakage across bounded contexts, (3) validate code against architecture constraints, (4) maintain modular monolith boundaries, or (5) implement architecture governance and drift detection.