Refine calendar display layout and features

Major improvements to the calendar display application:

- Redesigned weather display: moved forecast to header alongside time
- Added 3-day forecast with icons and high/low temps in header
- Simplified main layout: removed separate weather section, calendar now full-width
- Made layout more compact to fit on one screen without scrolling
- Added 2 new background images for rotation
- Updated image rotation interval to 1 minute
- Improved responsive design and spacing

The display now shows:
- Header: Time/date on left, current weather + 3-day forecast on right
- Main: Full-width calendar events section
- Footer: Dad joke

All elements now fit on a single screen with a clean, readable layout.

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

app.py

@@ -44,7 +44,7 @@ def get_weather():
         current_response.raise_for_status()
         current_data = current_response.json()
 
-        # Fetch 5-day forecast
+        # Fetch 3-day forecast
         forecast_url = f"https://api.openweathermap.org/data/2.5/forecast"
         forecast_response = requests.get(forecast_url, params=params, timeout=10)
         forecast_response.raise_for_status()
@@ -54,9 +54,9 @@ def get_weather():
         daily_forecast = []
         seen_dates = set()
 
-        for item in forecast_data['list'][:40]:  # Next 5 days (8 forecasts per day)
+        for item in forecast_data['list'][:40]:  # Next 3 days (8 forecasts per day)
             date = datetime.fromtimestamp(item['dt']).date()
-            if date not in seen_dates and len(daily_forecast) < 5:
+            if date not in seen_dates and len(daily_forecast) < 3:
                 seen_dates.add(date)
                 daily_forecast.append({
                     'date': date.strftime('%a'),