Refdata Party Domain: tenant_id Strong-Type Migration

• Eventing types under ores.refdata.api/eventing/ — intentionally std::string for NATS/JSON serialisation.
• Messaging protocol types under ores.refdata.api/messaging/ — same reason.
• Any type outside ores.refdata.api (IAM, DQ, reporting, etc.).

-    std::string tenant_id;
+    utility::uuid::tenant_id tenant_id = utility::uuid::tenant_id::system();

Add the include if not already present:

#include "ores.utility/uuid/tenant_id.hpp"

The DB column always contains a valid UUID string. Use .value() — a malformed row is a data corruption bug, not an expected runtime condition.

-    r.tenant_id = v.tenant_id;
+    r.tenant_id = utility::uuid::tenant_id::from_string(v.tenant_id).value();

Reference: portfolio_mapper.cpp line 38.

-    r.tenant_id = v.tenant_id;
+    r.tenant_id = v.tenant_id.to_string();

Reference: portfolio_mapper.cpp line 68.

party_repository::read_system_party maps rows by index rather than via the mapper (line 129). Change:

-    p.tenant_id = *row[1];
+    p.tenant_id = utility::uuid::tenant_id::from_string(*row[1]).value();

Generators pull tenant_id from ctx.env() with a default of "system". The literal "system" is not a UUID; use value_or to fall back to the system tenant sentinel:

-    r.tenant_id = tenant_id;
+    r.tenant_id = utility::uuid::tenant_id::from_string(tenant_id)
+        .value_or(utility::uuid::tenant_id::system());

Add the include if not already present:

#include "ores.utility/uuid/tenant_id.hpp"

Affected generators (all in ores.refdata.api/src/generators/):

• party_generator.cpp
• business_unit_generator.cpp
• business_unit_type_generator.cpp
• counterparty_generator.cpp
• counterparty_identifier_generator.cpp
• counterparty_contact_information_generator.cpp
• party_contact_information_generator.cpp
• party_counterparty_generator.cpp
• party_country_generator.cpp
• party_currency_generator.cpp
• party_identifier_generator.cpp

• [X] party.hpp — change field type, add include
• [X] business_unit.hpp — change field type, add include
• [X] business_unit_type.hpp — change field type, add include
• [X] counterparty.hpp — change field type, add include
• [X] counterparty_identifier.hpp — change field type, add include
• [X] counterparty_contact_information.hpp — change field type, add include
• [X] party_contact_information.hpp — change field type, add include
• [X] party_counterparty.hpp — change field type, add include
• [X] party_country.hpp — change field type, add include
• [X] party_currency.hpp — change field type, add include
• [X] party_identifier.hpp — change field type, add include

• [X] party_mapper.cpp — both read and write sides
• [X] business_unit_mapper.cpp — both read and write sides
• [X] business_unit_type_mapper.cpp — both read and write sides
• [X] counterparty_mapper.cpp — both read and write sides
• [X] counterparty_identifier_mapper.cpp — both read and write sides
• [X] counterparty_contact_information_mapper.cpp — both read and write sides
• [X] party_contact_information_mapper.cpp — both read and write sides
• [X] party_counterparty_mapper.cpp — both read and write sides
• [X] party_country_mapper.cpp — both read and write sides
• [X] party_currency_mapper.cpp — both read and write sides
• [X] party_identifier_mapper.cpp — both read and write sides

• [X] party_repository.cpp — manual row mapping in read_system_party (line 129)

• [X] party_generator.cpp
• [X] business_unit_generator.cpp
• [X] business_unit_type_generator.cpp
• [X] counterparty_generator.cpp
• [X] counterparty_identifier_generator.cpp
• [X] counterparty_contact_information_generator.cpp
• [X] party_contact_information_generator.cpp
• [X] party_counterparty_generator.cpp
• [X] party_country_generator.cpp
• [X] party_currency_generator.cpp
• [X] party_identifier_generator.cpp

These were not in the original scope but required fixes to compile after the domain header changes. The pattern in each: update find_system_party_id helper to take const ores::utility::uuid::tenant_id&, remove spurious .to_string() at call sites, and update make_pc / make_party_* helpers that assigned h.tenant_id().to_string() to pc.tenant_id.

• [X] party_rls_isolation_tests.cpp
• [X] repository_party_counterparty_repository_tests.cpp
• [X] repository_party_country_repository_tests.cpp
• [X] repository_party_currency_repository_tests.cpp
• [X] organisation_publisher_integration_tests.cpp (ores.synthetic.core) — moved from_string() conversion before the generic stamp lambda so all entity types receive the strong type directly

• [X] Build ores.refdata.api.lib and ores.refdata.core.lib cleanly
• [X] All refdata repository tests pass (ores.refdata.core test suite)
• [X] ores.synthetic.core tests pass (no more bad access to std::expected)