feat(clickhouse): integrate goose migrations and analytics repository

Add a separate ClickHouse OLAP pipeline with goose/clickhouse DDL as the
sole schema source, model/analytics for ORM mapping, and repository/analytics
for reads (ChDB/GORM) and batch writes (ChConn). Refactor risk_control and
admin/logs to use the repository layer instead of inline SQL. Remove the
manual support-files DDL and document the workflow in database-migration skill.

.gitignore

@@ -56,6 +56,7 @@ s3_cache
 /.idea/
 /uploads/
 /*-source/
+/*-source.zip
 /.cache/
 /internal/router/root/dist/
 .dmux/