fix(type_mapper): handle PostgreSQL array types in tags

* Update BuildBunTag to append "array" for array types
* Add tests for handling array types in TypeMapper
* Adjust regex in SanitizeStructTagValue to preserve array suffix

pkg/writers/writer.go

@@ -207,7 +207,8 @@ func quoteSQLLiteral(value string) string {
 // - Returns a clean identifier safe for use in struct tags and field names
 func SanitizeStructTagValue(value string) string {
 	// Remove DBML/DCTX style comments in brackets (e.g., [note: 'description'])
-	commentRegex := regexp.MustCompile(`\s*\[.*?\]\s*`)
+	// Require at least one character inside brackets to avoid stripping PostgreSQL array suffix "[]"
+	commentRegex := regexp.MustCompile(`\s*\[[^\]]+\]\s*`)
 	value = commentRegex.ReplaceAllString(value, "")
 
 	// Trim whitespace