feat: Audio tab QToolBox — Extract & Edit + Scan/Classify panes

tests/test_ui_structure.py

@@ -53,7 +53,7 @@ def test_workers_spinbox_in_export_tab(win):
     assert win._spn_workers in win._tab_export.findChildren(QSpinBox)
 
 
-def test_scan_button_in_scan_tab(win):
+def test_scan_button_in_audio_tab(win):
     from PyQt6.QtWidgets import QPushButton
     assert win._btn_scan in win._tab_audio.findChildren(QPushButton)
 
@@ -295,3 +295,16 @@ def test_audio_edit_widgets_exist(win):
     assert win._cmb_audio_fmt.findData(".wav") >= 0
     assert win._cmb_audio_fmt.findData(".mp3") >= 0
     assert win._cmb_audio_fmt.findData(".flac") >= 0
+
+
+def test_audio_toolbox_has_two_panes(win):
+    from PyQt6.QtWidgets import QToolBox, QPushButton
+    tb = win._tab_audio.findChild(QToolBox)
+    assert tb is not None
+    titles = [tb.itemText(i) for i in range(tb.count())]
+    assert titles[0].startswith("Extract")
+    assert any("Scan" in t or "Classify" in t for t in titles)
+    # Extract controls now live under the Audio tab.
+    assert win._btn_extract_audio in tb.findChildren(QPushButton)
+    # Scan controls remain reachable.
+    assert win._btn_scan in tb.findChildren(QPushButton)