refactor: move GPIO and pygame initialization into setup()

wecker.py

@@ -59,10 +59,12 @@ def remove_pid_file():
         pass
 
 
-# GPIO Setup
 BUTTON_PIN = 17
 LED_PIN = 27
 
+
+def setup():
+    """Initialize GPIO and audio hardware. Call once before running."""
     GPIO.setmode(GPIO.BCM)
     GPIO.setup(LED_PIN, GPIO.OUT)
     GPIO.setup(BUTTON_PIN, GPIO.IN, pull_up_down=GPIO.PUD_UP)
@@ -199,6 +201,7 @@ class AlarmClock:
 
 
 def run_alarm(test_mode=False):
+    setup()
     logging.info("Alarm clock started. Music is playing in an endless loop.")
     if "pygame" in globals() and hasattr(pygame, "mixer") and pygame.mixer.get_init():
         pygame.mixer.music.play(-1)