fix(postgresql): restore parseRelationFromNodes for column type resolution

The convertTypeName function populates extra fields (Names, ArrayBounds,
Typmods) on the TypeName struct which breaks the catalog's type equality
check used for ALTER TYPE RENAME operations.

This change:
- Reverts to using parseRelationFromNodes + rel.TypeName() which only
  populates Catalog, Schema, Name fields needed for type resolution
- Updates ColumnDef.Format to use IsArray field for array formatting
  since TypeName.ArrayBounds is no longer set

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <[email protected]>

Author: kyleconroy

internal/engine/postgresql/parse.go

@@ -431,6 +431,11 @@ func translate(node *nodes.Node) (ast.Node, error) {
 		for _, elt := range n.TableElts {
 			switch item := elt.Node.(type) {
 			case *nodes.Node_ColumnDef:
+				rel, err := parseRelationFromNodes(item.ColumnDef.TypeName.Names)
+				if err != nil {
+					return nil, err
+				}
+
 				primary := false
 				for _, con := range item.ColumnDef.Constraints {
 					if constraint, ok := con.Node.(*nodes.Node_Constraint); ok {
@@ -440,7 +445,7 @@ func translate(node *nodes.Node) (ast.Node, error) {
 
 				create.Cols = append(create.Cols, &ast.ColumnDef{
 					Colname:    item.ColumnDef.Colname,
-					TypeName:   convertTypeName(item.ColumnDef.TypeName),
+					TypeName:   rel.TypeName(),
 					IsNotNull:  isNotNull(item.ColumnDef) || primaryKey[item.ColumnDef.Colname],
 					IsArray:    isArray(item.ColumnDef.TypeName),
 					ArrayDims:  len(item.ColumnDef.TypeName.ArrayBounds),

internal/sql/ast/column_def.go

@@ -39,6 +39,11 @@ func (n *ColumnDef) Format(buf *TrackedBuffer) {
 	buf.WriteString(n.Colname)
 	buf.WriteString(" ")
 	buf.astFormat(n.TypeName)
+	// Use IsArray from ColumnDef since TypeName.ArrayBounds may not be set
+	// (for type resolution compatibility)
+	if n.IsArray && !items(n.TypeName.ArrayBounds) {
+		buf.WriteString("[]")
+	}
 	if n.PrimaryKey {
 		buf.WriteString(" PRIMARY KEY")
 	} else if n.IsNotNull {