STATE-WP-0062 T1: two-dimension service_catalog model + migration

Add ServiceCatalog core (hosting_type, development_type, maturity_level) plus
1:1 per-dimension extension tables (service_third_party, service_first_party,
service_cloud, service_self_hosted) keyed by service_id. Migration creates the
tables and copies existing tpsc_catalog rows into service_catalog as
(cloud_hosted, third_party), reusing the tpsc_catalog id as the service_catalog
id so existing tpsc_entries.catalog_id keep resolving without a column change.
GDPR/data-processing fields move to service_cloud; pricing_model to
service_third_party.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

api/models/__init__.py

@@ -18,6 +18,13 @@ from api.models.agent_message import AgentMessage
 from api.models.capability_catalog import CapabilityCatalog
 from api.models.capability_request import CapabilityRequest
 from api.models.tpsc import TPSCCatalog, TPSCSnapshot, TPSCEntry
+from api.models.service_catalog import (
+    ServiceCatalog,
+    ServiceThirdParty,
+    ServiceFirstParty,
+    ServiceCloud,
+    ServiceSelfHosted,
+)
 from api.models.doi_cache import DOICache
 from api.models.token_event import TokenEvent
 from api.models.interface_change import InterfaceChange
@@ -46,6 +53,8 @@ __all__ = [
     "CapabilityCatalog",
     "CapabilityRequest",
     "TPSCCatalog", "TPSCSnapshot", "TPSCEntry",
+    "ServiceCatalog", "ServiceThirdParty", "ServiceFirstParty",
+    "ServiceCloud", "ServiceSelfHosted",
     "DOICache",
     "TokenEvent",
     "InterfaceChange",