fix: preserve MySQL schema fidelity

cmd/relspec/root.go

@@ -18,6 +18,7 @@ var (
 	noVersion            bool
 	silent               bool
 	strictDirectives     bool
+	strictConversion     bool
 	lowercaseIdentifiers bool
 	typeMapFlags         []string
 	typeMappings         map[string]string
@@ -62,6 +63,7 @@ func init() {
 	rootCmd.PersistentFlags().StringArrayVar(&typeMapFlags, "type-map", nil, "Override a SQL-to-Go type mapping for bun/gorm output as sqltype=gotype (repeatable), e.g. --type-map uuid=uuid.UUID --type-map numeric=decimal.Decimal")
 	rootCmd.PersistentFlags().BoolVar(&noVersion, "no-version", false, "Suppress the RelSpec version header")
 	rootCmd.PersistentFlags().BoolVar(&silent, "silent", false, "Suppress progress and status messages (errors are still shown)")
+	rootCmd.PersistentFlags().BoolVar(&strictConversion, "strict-conversion", false, "Reject known lossy MySQL schema conversions before writing or executing output")
 	rootCmd.PersistentFlags().BoolVar(&strictDirectives, "strict-directives", false, "Fail on unknown or untranslatable DBML dialect directives (@postgres:, @sqlite:, …)")
 }