fix: remove debug import and fix SQLitePlatform alter sql mutation

- Remove stale `from dumpdie import dd` debug import from MorphTo.py
- Fix compile_alter_sql mutating diff.from_table.added_columns in place
  via .pop() and .update(), causing KeyError and wrong column lists when
  to_sql() is called more than once (e.g. __aexit__ + test assertion).
  Work on dict copies so each call produces correct idempotent output.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: tmgbedu

fastapi_startkit/src/fastapi_startkit/masoniteorm/relationships/MorphTo.py

@@ -1,4 +1,3 @@
-from dumpdie import dd
 from fastapi_startkit.masoniteorm.models import registry
 from .BaseRelationship import BaseRelationship
 from ..collection import Collection

fastapi_startkit/src/fastapi_startkit/masoniteorm/schema/platforms/SQLitePlatform.py

@@ -211,23 +211,21 @@ def compile_alter_sql(self, diff):
             or diff.changed_columns
             or diff.added_foreign_keys
         ):
-            original_columns = diff.from_table.added_columns
+            original_columns = dict(diff.from_table.added_columns)
             # pop off the dropped columns. No need for them here
             for column in diff.dropped_columns:
-                original_columns.pop(column)
+                original_columns.pop(column, None)
 
             sql.append(
                 "CREATE TEMPORARY TABLE __temp__{table} AS SELECT {original_column_names} FROM {table}".format(
                     table=diff.name,
-                    original_column_names=", ".join(
-                        diff.from_table.added_columns.keys()
-                    ),
+                    original_column_names=", ".join(original_columns.keys()),
                 )
             )
 
             sql.append("DROP TABLE {table}".format(table=self.wrap_table(diff.name)))
 
-            columns = diff.from_table.added_columns
+            columns = dict(original_columns)
 
             columns.update(diff.renamed_columns)
             columns.update(diff.changed_columns)
@@ -264,9 +262,7 @@ def compile_alter_sql(self, diff):
                     quoted_table=self.wrap_table(diff.name),
                     table=diff.name,
                     new_columns=", ".join(self.columnize_names(columns)),
-                    original_column_names=", ".join(
-                        diff.from_table.added_columns.keys()
-                    ),
+                    original_column_names=", ".join(columns.keys()),
                 )
             )
             sql.append("DROP TABLE __temp__{table}".format(table=diff.name))