migrate pyqt5 to pyside6

apps/autocal/tools/panel_check.py

@@ -8,8 +8,8 @@ inside parents, controls gated by connection and bus state, locales complete.
     python apps/autocal/tools/panel_check.py
 
 No controller, no DLL and no display are needed. Mirrors
-``apps/studio/tools/ui_check.py``, but cannot import it: that module imports
-PyQt5, and AutoCal's environment has none.
+``apps/studio/tools/ui_check.py``, but cannot import it: that module pulls in
+``orisys_studio`` (the acquisition stack), which AutoCal's environment has none of.
 """
 
 from __future__ import annotations
@@ -218,8 +218,8 @@ def main() -> int:
             "the sequence point list is empty",
         )
         checker.that(
-            sequence.table.columnCount() == 8,
-            f"the point list has {sequence.table.columnCount()} columns, expected 8",
+            sequence.table.columnCount() == len(sequence.column_keys()),
+            f"the point list has {sequence.table.columnCount()} columns, expected {len(sequence.column_keys())}",
         )
 
         # The shell: one rail, a run bar, and a health chip.