fix(plpgsql-deparser): preserve schema qualification in %rowtype/%type references

The deparser was stripping pg_catalog. prefix from ALL type names, but for
%rowtype and %type references like pg_catalog.pg_class%rowtype[], the schema
qualification is meaningful and should be preserved.

Now only strips pg_catalog. for built-in types, not for %rowtype/%type refs.

Fixes plpgsql_array-20.sql fixture (175/190 now passing, 15 remaining).

Author: pyramation

packages/plpgsql-deparser/__tests__/plpgsql-deparser.test.ts

@@ -53,7 +53,6 @@ describe('PLpgSQLDeparser', () => {
       'plpgsql_control-15.sql',
       'plpgsql_control-17.sql',
       'plpgsql_call-44.sql',
-      'plpgsql_array-20.sql',
     ]);
 
     it('should round-trip ALL generated fixtures (excluding known failures)', async () => {

packages/plpgsql-deparser/src/plpgsql-deparser.ts

@@ -457,8 +457,13 @@ export class PLpgSQLDeparser {
   private deparseType(typeNode: PLpgSQLTypeNode): string {
     if ('PLpgSQL_type' in typeNode) {
       let typname = typeNode.PLpgSQL_type.typname;
-      // Clean up type names (remove pg_catalog prefix and quotes)
-      typname = typname.replace(/^pg_catalog\./, '').replace(/"/g, '');
+      // Remove quotes
+      typname = typname.replace(/"/g, '');
+      // Strip pg_catalog. prefix for built-in types, but preserve schema qualification
+      // for %rowtype and %type references where the schema is part of the table/variable reference
+      if (!typname.includes('%rowtype') && !typname.includes('%type')) {
+        typname = typname.replace(/^pg_catalog\./, '');
+      }
       return typname.trim();
     }
     return '';