Last few tweaks

Provider/fetch_png.py

@@ -0,0 +1,20 @@
+import urllib.request
+import json
+import time
+
+# 1. Register a fake device
+req = urllib.request.Request('http://calendink.local/api/devices/register', data=json.dumps({'mac': 'DE:BU:G0:44:55:66'}).encode('utf-8'), headers={'Content-Type': 'application/json'})
+try:
+    with urllib.request.urlopen(req) as response:
+        print("Registered:", response.read().decode())
+except Exception as e:
+    print("Error registering:", e)
+
+time.sleep(1)
+
+# 2. Download the PNG
+try:
+    urllib.request.urlretrieve('http://calendink.local/api/devices/screen.png?mac=DE:BU:G0:44:55:66', 'test_png.png')
+    print("Downloaded test_png.png")
+except Exception as e:
+    print("Error downloading PNG:", e)