Add fallback handling for missing icon files

Add graceful fallback behavior when icon image files (refresh.png, settings.png, MSMD32.png) are not found. The application now uses Unicode symbols (⟳, ⚙) as button text alternatives, preventing crashes when running without bundled assets.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

.claude/settings.local.json

@@ -6,7 +6,17 @@
       "Bash(pip install:*)",
       "Bash(python:*)",
       "Bash(git init:*)",
-      "Bash(git add:*)"
+      "Bash(git add:*)",
+      "Bash(cat:*)",
+      "Bash(git commit:*)",
+      "Bash(git push:*)",
+      "Bash(ls:*)",
+      "Bash(git tag:*)",
+      "Bash(pyinstaller:*)",
+      "Bash(open:*)",
+      "Bash(osascript:*)",
+      "Bash(killall:*)",
+      "Bash(git fetch:*)"
     ]
   }
 }

MSMD_multiLevel.py

@@ -175,14 +175,22 @@ class App(QWidget):
         self.portRefreshButton = QPushButton(self)
         self.portRefreshButton.setToolTip('Press to detect port of connected base station')
         self.portRefreshButton.clicked.connect(self.refreshPorts)
+        if os.path.exists('refresh.png'):
             self.portRefreshButton.setIcon(QIcon('refresh.png'))
             self.portRefreshButton.setFixedWidth(24)
+        else:
+            self.portRefreshButton.setText('⟳')
+            self.portRefreshButton.setFixedWidth(30)
 
         self.settingsButton = QPushButton()
         self.settingsButton.setToolTip('Open the Settings Dialog')
+        self.settingsButton.clicked.connect(self.openSettings)
+        if os.path.exists('settings.png'):
             self.settingsButton.setIcon(QIcon('settings.png'))
             self.settingsButton.setMaximumWidth(24)
-        self.settingsButton.clicked.connect(self.openSettings)
+        else:
+            self.settingsButton.setText('⚙')
+            self.settingsButton.setMaximumWidth(30)
         
         self.connected = False
         self.refreshPorts()
@@ -269,6 +277,7 @@ class App(QWidget):
         self.setLayout(self.stackedLayout)
         self.setWindowTitle(self.title)
         self.setGeometry(self.left, self.top, self.width, self.height)
+        if os.path.exists('MSMD32.png'):
             self.setWindowIcon(QIcon('MSMD32.png'))
         self.cleanupEvent.connect(self.cleanupStuff)
         self.show()

Settings.py

@@ -25,6 +25,8 @@ class Settings(QWidget):
         self.__UserAbort = True
         
         #-----Widget Settings-----
+        import os
+        if os.path.exists('MSMD32.png'):
             self.setWindowIcon(QIcon('MSMD32.png'))
         self.setWindowTitle('MSMD Settings')