update with latest build versions, includes custom build for postgres and migrating from v16 to v18

build/postgresql-postgis/init-extensions.sql

@@ -0,0 +1,21 @@
+-- Initialize PostGIS extensions for testing
+-- This mirrors what CNPG does in postInitTemplateSQL
+
+-- Core PostGIS
+CREATE EXTENSION IF NOT EXISTS postgis;
+
+-- Topology support
+CREATE EXTENSION IF NOT EXISTS postgis_topology;
+
+-- Fuzzy string matching (required for tiger geocoder)
+CREATE EXTENSION IF NOT EXISTS fuzzystrmatch;
+
+-- US Census TIGER geocoder
+CREATE EXTENSION IF NOT EXISTS postgis_tiger_geocoder;
+
+-- Verify installations
+SELECT 'PostgreSQL version: ' || version();
+SELECT 'PostGIS version: ' || postgis_full_version();
+
+-- List all installed extensions
+SELECT extname, extversion FROM pg_extension ORDER BY extname;