Fix pattern highlighting in lighting controller GUI

- Add pattern name mapping to translate between MIDI handler names and GUI display names
- Fixes highlighting for patterns with underscores (sequential_pulse, alternating_phase, n_chase)
- Now properly highlights selected patterns in the button grid

src/main.py

@@ -275,10 +275,21 @@ class App:
             "-", "-", "-", "-",
             "-", "-", "-", "-",
         ]
+        
+        # Map MIDI handler pattern names to GUI display names
+        pattern_name_mapping = {
+            "sequential_pulse": "sequential\npulse",
+            "alternating_phase": "alternating\nphase",
+            "n_chase": "n chase",
+        }
+        
+        # Get the display name for the current pattern
+        display_pattern = pattern_name_mapping.get(pattern, pattern)
+        
         # notes numbers per cell (bottom-left origin)
         for idx, lbl in enumerate(self.button1_cells):
             name = bank1_patterns[idx]
-            sel = (pattern == name and name != "-")
+            sel = (display_pattern == name and name != "-")
             icon = icon_for.get(name, "")
             text = f"{icon} {name}" if name != "-" else ""
             if sel: