feat: Add API polling for dynamic sign display

Co-authored-by: aider (gemini/gemini-2.5-pro) <aider@aider.chat>

protosign.py

@@ -3,6 +3,9 @@
 
 from vestactrl import setup_digits, board_init_uart
 import textwrap
+import urllib2
+import json
+import time
 
 def send_sign(text):
     """
@@ -26,8 +29,31 @@ def send_sign(text):
     setup_digits(board_lines, left_to_right_swap=False, real_hw=True)
 
 
+def poll_and_display():
+    """
+    Polls the Protospace API and displays the sign message.
+    """
+    last_message = ""
+    url = 'https://api.my.protospace.ca/stats/'
+
+    while True:
+        try:
+            response = urllib2.urlopen(url)
+            data = json.load(response)
+            message = data.get('sign')
+
+            if message and message != last_message:
+                print "Updating sign with new message: " + message
+                send_sign(message)
+                last_message = message
+
+        except (urllib2.URLError, ValueError, KeyError) as e:
+            print "Error: {}".format(e)
+
+        time.sleep(5)
+
+
 if __name__ == '__main__':
     # Initialize communication with the board.
     board_init_uart()
-    message = "This is a test of the protosign script. This message should wrap across multiple lines and be truncated if it is too long to fit on the display."
-    send_sign(message)
+    poll_and_display()