2e764746e7
5-phase hardening to prevent silent file-layer collisions (the D-Bus regression class): Phase 1: lint-config-paths.sh + make lint-config in depends.mk Phase 2: CollisionTracker in installer (content-hash comparison) Phase 3: installs manifests in recipe.toml + validate-file-ownership.sh Phase 4: validate-init-services.sh + make validate in disk.mk Phase 5: documentation (AGENTS.md, BUILD-SYSTEM-HARDENING-PLAN.md) Both redbear-mini and redbear-full build and validate clean. 66 declared install paths in base, zero conflicts.