sixth version

internal/repository/migrations/0008_free_order_policy.down.sql

@@ -0,0 +1,4 @@
+ALTER TABLE instruments
+  MODIFY free_order_limit_per_day INT NOT NULL DEFAULT 0 COMMENT '0 means no configured free-order cap';
+
+UPDATE schema_meta SET meta_value='0007' WHERE meta_key='schema_version';

internal/repository/migrations/0008_free_order_policy.up.sql

@@ -0,0 +1,4 @@
+ALTER TABLE instruments
+  MODIFY free_order_limit_per_day INT NOT NULL DEFAULT 0 COMMENT '0 means free-order policy is unconfigured; -1 means explicitly no free-order cap';
+
+UPDATE schema_meta SET meta_value='0008' WHERE meta_key='schema_version';