Prerequisite for all pSEO serving models. Adds CASE-based country_name_en and URL-safe country_slug to foundation.dim_cities, then selects them through serving.city_market_profile so downstream models inherit them automatically. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
foundation
Business logic layer: dimensions, facts, conformed metrics. May join across staging models from different sources.
Naming convention: foundation.dim_<entity>, foundation.fact_<event>