fix(timezone): use America/New_York instead of EST for ESPN API date queries (#273)

* fix(install): add --prefer-binary to pip installs to avoid /tmp exhaustion

timezonefinder (~54 MB) includes large timezone polygon data files that pip
unpacks into /tmp during installation. On Raspberry Pi, the default tmpfs
/tmp size (often ~half of RAM) can be too small, causing the install to fail
with an out-of-space error.

Adding --prefer-binary tells pip to prefer pre-built binary wheels over
source distributions. Since timezonefinder and most other packages publish
wheels on PyPI (and piwheels.org has ARM wheels), this avoids the large
temporary /tmp extraction and speeds up installs generally.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* fix(timezone): use America/New_York instead of EST for ESPN API date queries

EST is a fixed UTC-5 offset that does not observe daylight saving time,
causing the ESPN API date to be off by one hour during EDT (March–November).
America/New_York correctly handles DST transitions.

The ESPN scoreboard API anchors its schedule calendar to Eastern US time,
so this Eastern timezone is intentionally kept for the API date — it is not
user-configurable. Game time display is converted separately to the user's
configured timezone.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Chuck <chuck@example.com>
Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

src/base_classes/sports.py

@@ -598,7 +598,7 @@ class SportsCore(ABC):
     def _fetch_todays_games(self) -> Optional[Dict]:
         """Fetch only today's games for live updates (not entire season)."""
         try:
-            tz = pytz.timezone("EST")
+            tz = pytz.timezone("America/New_York")  # Use full name (not "EST") for DST support
             now = datetime.now(tz)
             yesterday = now - timedelta(days=1)
             formatted_date = now.strftime("%Y%m%d")