Regenerate party_currency/party_country junction repository layer

While fixing a cross-tenant data-leak bug in junction codegen's repository_impl.org (surfaced by review on the "Retire hand-authored tenor_convention_resolution" PR), discovered party_currency_junction.org=/ =party_country_junction.org were both missing the * C++ ** Flags :subcomponent: api block that tenor_convention_resolution.org now has. Without it, regenerating either junction's repository facet lands at the wrong path (projects/ores.refdata/include/... instead of the real projects/ores.refdata/core/include/ores.refdata.core/...) since component_core_dir falls back to the no-subcomponent branch. Added the missing Flags block to both models (safe, path-affecting only) but did not regenerate/commit the actual entity/mapper/repository .hpp=/.cpp= files for either junction – that's real, separate scope: confirmed via a throwaway regen that the generated shape now matches the real hand-authored files closely (a few added includes/doc comments, cosmetic), but committing that swap deserves its own task with proper build+test verification, same as the tenor_convention_resolution work did.

party_currency=/=party_country are the other two production junctions besides tenor_convention_resolution, and now that junction C++ codegen genuinely works (this sprint's story), they're candidates for the same hand-authored-to-generated convergence. Filing this so the work isn't lost/forgotten, and so the :subcomponent: fix (already landed) doesn't sit unexploited.

• projects/ores.refdata/modeling/ores.refdata.party_currency_junction.org
• projects/ores.refdata/modeling/ores.refdata.party_country_junction.org
• projects/ores.refdata/core/include/ores.refdata.core/repository/party_currency_entity.hpp — the hand-authored reference to diff against.

• Retire legacy codegen profile system; add junction support to physical-space codegen — the story that made this possible.