test(thinking_trace): add test for <think> half-width marker (doeh cleanup Phase 4.2)

tests/test_thinking_trace.py

@@ -57,6 +57,15 @@ def test_parse_thinking_with_empty_response():
     assert response == ""
 
 
+def test_parse_half_width_think_tag():
+    raw = "<think>This is DWARF debug info, not the actual disassembly.</think>\n\nHere is the disassembly."
+    segments, response = parse_thinking_trace(raw)
+    assert len(segments) == 1
+    assert segments[0].content == "This is DWARF debug info, not the actual disassembly."
+    assert segments[0].marker == "think"
+    assert response == "Here is the disassembly."
+
+
 if __name__ == "__main__":
     test_parse_xml_thinking_tag()
     test_parse_xml_thought_tag()
@@ -65,4 +74,5 @@ if __name__ == "__main__":
     test_parse_empty_response()
     test_parse_multiple_markers()
     test_parse_thinking_with_empty_response()
+    test_parse_half_width_think_tag()
     print("All thinking trace tests passed!")