Keep folder prefix in strip iteration node

tests/test_dumas_json_nodes.py

@@ -43,26 +43,26 @@ class DumasJSONNodeTests(unittest.TestCase):
 
         self.assertEqual(result, ('{\n  "a": 2,\n  "b": 1\n}',))
 
-    def test_strip_iteration_suffix_removes_trailing_iteration_before_extension(self):
+    def test_strip_iteration_suffix_keeps_only_prefix_before_first_underscore(self):
         node = DumasStripIterationSuffixNode()
 
         result = node.strip_iteration_suffix("asset_build_003.png")
 
-        self.assertEqual(result, ("asset_build.png",))
+        self.assertEqual(result, ("asset.png",))
 
-    def test_strip_iteration_suffix_removes_trailing_iteration_without_extension(self):
+    def test_strip_iteration_suffix_keeps_only_prefix_without_extension(self):
         node = DumasStripIterationSuffixNode()
 
         result = node.strip_iteration_suffix("asset_build_003")
 
-        self.assertEqual(result, ("asset_build",))
+        self.assertEqual(result, ("asset",))
 
-    def test_strip_iteration_suffix_removes_last_underscore_segment_even_when_not_numeric(self):
+    def test_strip_iteration_suffix_removes_everything_after_first_underscore(self):
         node = DumasStripIterationSuffixNode()
 
-        result = node.strip_iteration_suffix("my_asset_final.png")
+        result = node.strip_iteration_suffix("char123_pose_final.png")
 
-        self.assertEqual(result, ("my_asset.png",))
+        self.assertEqual(result, ("char123.png",))
 
     def test_strip_iteration_suffix_leaves_names_without_underscore_unchanged(self):
         node = DumasStripIterationSuffixNode()