feat(admin): stabilize blog and admin patterns

docs/ops/COMMON_CODE_AUDIT.sql

@@ -0,0 +1,17 @@
+-- Common code audit checks
+SELECT code_group, code_value
+FROM common_codes
+WHERE code_value LIKE '% %';
+
+SELECT code_group, COUNT(*)
+FROM common_codes
+GROUP BY code_group
+ORDER BY code_group;
+
+SELECT DISTINCT c.service_type
+FROM clients c
+LEFT JOIN common_codes cc
+  ON cc.code_group = 'CLIENT_SERVICE_TYPE'
+ AND cc.code_value = c.service_type
+WHERE c.service_type IS NOT NULL
+  AND cc.code_value IS NULL;