feat(product-suite): improve multi-image AI writing

tests/test_product_suite_gui.py

@@ -933,7 +933,7 @@ class ProductSuiteGuiTests(TempDirMixin, unittest.TestCase):
 
         self.assert_removed(temp_dir)
 
-    def test_ai_write_uses_first_eight_originals_in_source_order(self):
+    def test_ai_write_uses_first_eight_originals_in_source_order_regardless_of_checks(self):
         with self.make_temp_dir() as temp_dir:
             config = self._config(temp_dir)
             project, assets = self._create_project_with_assets(temp_dir, config, 9)
@@ -945,6 +945,7 @@ class ProductSuiteGuiTests(TempDirMixin, unittest.TestCase):
             state.project_id = project.id
             state.project_binding_state = project.binding_state
             tab._load_state(state)
+            tab.original_list.set_checked_asset_ids([assets[-1].id])
             captured = {}
 
             class _Signal: