- added no chat template comparison in test_chat_wrap_and_equivalence

- removed duplicate comparison

pkg/llms_from_scratch/tests/test_qwen3.py

@@ -457,15 +457,13 @@ def test_chat_wrap_and_equivalence(add_gen, add_think):
             add_thinking=add_think,
         )
 
-        # Our encode vs HF template
-        ours = qt.encode(prompt)
-        ref = hf_tok.apply_chat_template(
-            messages,
-            tokenize=True,
-            add_generation_prompt=add_gen,
-            enable_thinking=add_think,
-        )
-        ours = qt.encode(prompt)
+        # Base models: compare raw encoding (no chat template)
+        if "Base" in repo_id:
+            ours = qt.encode(prompt)  # should use no chat template
+            ref = hf_tok.encode(prompt)  # raw encoding without chat template
+        else:
+            # Instruct models: compare with chat template
+            ours = qt.encode(prompt)  # will use chat template
             ref = hf_tok.apply_chat_template(
                 messages,
                 tokenize=True,