Investigate junction codegen output path/namespace mismatch

Running compass codegen entity generate badge_mapping --diff (badge_mapping is a junction, modeled by projects/ores.dq/modeling/ores.dq.badge_mapping_junction.org) shows it would generate a domain header at projects/ores.dq/include/ores.dq/domain/badge_mapping.hpp, in namespace ores::dq::domain, with a struct badge_mapping type. But the live, actually-used, hand-written repository (projects/ores.dq/core/src/repository/badge_mapping_repository.cpp) lives under the ores.dq.api=/=ores.dq.core subcomponents and uses ores::dq::messaging::badge_mapping (not domain::badge_mapping) as its return type – confirmed by badge_mapping_repository::read_all() returning std::vector<messaging::badge_mapping>. Regenerating this junction today would produce a parallel, incompatible type in an entirely different path and namespace, not something that could replace or even coexist cleanly with the current hand-written code without further changes. Investigate whether this is a genuine junction-codegen archetype bug (missing subcomponent/namespace configuration specific to junctions) or whether badge_mapping was always meant to be hand-written and the junction model is just aspirational/never actually used to generate the live code.

Discovered while wiring badge_mapping into the DQ publish-from-dq pipeline (Migrate badge_definition/badge_severity/code_domain to standard codegen + DQ publishing). That task successfully regenerated three ores.codegen.entity models (badge_severity, badge_definition, code_domain) cleanly, but the fourth badge-related model, a junction, turned out not to be safely regenerable at all due to this mismatch – meaning junction codegen (at least for badge_mapping, and possibly other junctions) may be more broadly out of sync with what's actually live, similar in spirit to the ores.qt/dq orphaned-scaffold drift and the tenant_type has_tenant_id drift found in the same task.

• projects/ores.dq/modeling/ores.dq.badge_mapping_junction.org – the junction model.
• projects/ores.dq/core/src/repository/badge_mapping_repository.cpp – the live, hand-written repository this would supposedly replace.

• Investigate tenant_type model/table drift on has_tenant_id – same task, same class of "codegen output doesn't match live code" drift.