fix: apply ruff formatting to code style

Author: Lucia-Poma

src/clinical_dbs_annotator/ui/amplitude_split_widget.py

@@ -110,7 +110,7 @@ def get_amplitude_text(self) -> str:
           e.g. ``"1.5_1.0"``.
         """
         total_text = self._amp_edit.text().strip()
-        
+
         # For single or no cathode, return total amplitude
         if len(self._cathode_labels) <= 1:
             return total_text
@@ -161,9 +161,9 @@ def _rebuild_rows(self) -> None:
         self._clear_rows()
 
         # Check if we have a single grouped contact (E1, E2, etc.)
-        if (len(self._cathode_labels) == 1 and 
-            len(self._cathode_labels[0]) >= 2 and 
-            self._cathode_labels[0][0] == 'E' and 
+        if (len(self._cathode_labels) == 1 and
+            len(self._cathode_labels[0]) >= 2 and
+            self._cathode_labels[0][0] == 'E' and
             self._cathode_labels[0][1:].isdigit()):
             # Create segment rows for grouped contact
             self._create_segment_rows_only(self._cathode_labels[0])
@@ -233,7 +233,7 @@ def _create_segment_rows_only(self, parent_lbl: str) -> None:
 
         for seg_idx, seg_label in enumerate(seg_labels):
             seg_lbl = f"{parent_lbl}{seg_label}"
-            
+
             row_w = QWidget()
             row_layout = QHBoxLayout(row_w)
             row_layout.setContentsMargins(20, 0, 0, 0)  # Regular indentation (not extra)
@@ -285,7 +285,7 @@ def _create_segment_rows_only(self, parent_lbl: str) -> None:
             self._rows[seg_lbl] = (row_w, pct_edit, ma_label)
             self._layout.addWidget(row_w)
 
-    
+
     def _on_pct_edited(self, edited_label: str) -> None:
         """Called when user finishes editing a percentage field."""
         self._read_and_rebalance(edited_label)
@@ -437,7 +437,7 @@ def get_cathode_labels(canvas) -> list[str]:
         for contact_idx in range(model.num_contacts):
             # Check if this contact level is directional (has segments)
             is_contact_directional = model.is_level_directional(contact_idx)
-            
+
             if is_contact_directional:
                 # This contact has segments - check individual segments
                 seg_states = [

src/clinical_dbs_annotator/views/step1_view.py

@@ -125,13 +125,13 @@ def _is_single_grouped_directional(self, cathode_labels: list[str], canvas) -> b
         """Check if a single cathode label represents a grouped directional contact."""
         if len(cathode_labels) != 1 or not canvas or not canvas.model:
             return False
-        
+
         lbl = cathode_labels[0]
         # Check if this is a grouped contact (no segment suffix) that could be directional
         if len(lbl) >= 2 and lbl[0] == 'E' and lbl[1:].isdigit():
             try:
                 contact_idx = int(lbl[1:])
-                return (canvas.model.is_directional and 
+                return (canvas.model.is_directional and
                        canvas.model.is_level_directional(contact_idx))
             except (ValueError, IndexError):
                 pass
@@ -635,7 +635,7 @@ def _get_anode_cathode_texts(self, canvas: ElectrodeCanvas) -> tuple[str, str]:
             for contact_idx in range(model.num_contacts):
                 # Check if this contact level is directional (has segments)
                 is_contact_directional = model.is_level_directional(contact_idx)
-                
+
                 if is_contact_directional:
                     # This contact has segments - check individual segments
                     seg_states = [canvas.contact_states.get((contact_idx, seg), ContactState.OFF) for seg in range(3)]

src/clinical_dbs_annotator/views/step3_view.py

@@ -529,11 +529,11 @@ def _get_anode_cathode_texts(self, canvas: ElectrodeCanvas) -> tuple[str, str]:
             for contact_idx in range(model.num_contacts):
                 # Check if this contact level is directional (has segments)
                 is_contact_directional = model.is_level_directional(contact_idx)
-                
+
                 if is_contact_directional:
                     # This contact has segments - check individual segments
                     seg_states = [canvas.contact_states.get((contact_idx, seg), ContactState.OFF) for seg in range(3)]
-                    
+
                     # Always show individual segments, never group them
                     seg_labels = ["a", "b", "c"]
                     for seg, seg_state in enumerate(seg_states):
@@ -563,25 +563,25 @@ def _is_single_grouped_directional(self, cathode_labels: list[str], canvas) -> b
         """Check if we have a single grouped directional contact (all 3 segments selected)."""
         if len(cathode_labels) != 1:
             return False
-        
+
         lbl = cathode_labels[0]
         # Check if this is a grouped contact (E1, E2, etc., not E1a, E1b)
         is_grouped = (len(lbl) >= 2 and lbl[0] == 'E' and lbl[1:].isdigit())
-        
+
         if not is_grouped:
             return False
-        
+
         # Verify that this contact actually has all 3 segments selected on the canvas
         try:
             contact_idx = int(lbl[1:])
             model = canvas.model
             if not model or not model.is_directional:
                 return False
-            
+
             # Check if this contact level is directional
             if not model.is_level_directional(contact_idx):
                 return False
-            
+
             # Check if all 3 segments are cathodic
             seg_states = [
                 canvas.contact_states.get((contact_idx, seg), ContactState.OFF)