Update stock notifications with company names and new schedule times

Add full company names to stock price notifications displayed alongside tickers. Update scheduled message times from hourly to three specific times: market open (9:30 AM ET), noon (12:00 PM ET), and market close (4:00 PM ET).

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

stock_api/finnhub_api.py

@@ -33,6 +33,15 @@ class FinnhubAPI(StockAPIBase):
             Dictionary with stock data or None if unavailable
         """
         try:
+            # Get company name from company profile
+            company_name = None
+            try:
+                profile = self.client.company_profile2(symbol=ticker)
+                company_name = profile.get('name') or ticker.upper()
+            except Exception as e:
+                logger.warning(f"Could not fetch company name for {ticker}: {e}")
+                company_name = ticker.upper()
+
             # Get current quote data
             quote = self.client.quote(ticker)
 
@@ -56,6 +65,7 @@ class FinnhubAPI(StockAPIBase):
 
             return {
                 'ticker': ticker.upper(),
+                'company_name': company_name,
                 'current_price': round(current_price, 2),
                 'previous_close': round(previous_close, 2),
                 'change_dollar': round(change_dollar, 2),