test(dedup): a note is gated at its copy band, not the general floor (#4306)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/test_lesson_write_path.py

@@ -152,9 +152,12 @@ def test_a_lesson_is_judged_at_the_trigger_dominated_bar():
         "about one area would refuse each other"
     )
     assert _LESSON_SEMANTIC_THRESHOLD > _SEMANTIC_THRESHOLD
-    # An ordinary note is untouched — the carve-out is per kind, not a
-    # loosening of the gate.
-    assert _semantic_threshold("note") == _SEMANTIC_THRESHOLD
+    # The carve-out is per kind, not a loosening of the gate: a lesson's bar is
+    # its own, apart from the note's copy band (#4306).
+    from scribe.services.dedup import _NOTE_COPY_THRESHOLD
+
+    assert _semantic_threshold("note") == _NOTE_COPY_THRESHOLD
+    assert _NOTE_COPY_THRESHOLD != _LESSON_SEMANTIC_THRESHOLD
 
 
 @pytest.mark.asyncio