Initial commit: Discord stock bot with hourly PYPL updates

Functional Discord bot with automated hourly stock price updates during NYSE trading hours. Supports manual queries for any ticker via prefix commands.

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

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

config.py

@@ -0,0 +1,49 @@
+import os
+from dotenv import load_dotenv
+
+load_dotenv()
+
+
+class Config:
+    """Application configuration loaded from environment variables."""
+
+    # Discord configuration
+    DISCORD_TOKEN = os.getenv('DISCORD_TOKEN')
+    CHANNEL_ID = os.getenv('CHANNEL_ID')
+    COMMAND_PREFIX = os.getenv('COMMAND_PREFIX', '!')
+
+    # Stock configuration
+    PRIMARY_TICKER = os.getenv('PRIMARY_TICKER', 'PYPL')
+    STOCK_API_PROVIDER = os.getenv('STOCK_API_PROVIDER', 'finnhub')  # 'yahoo' or 'finnhub'
+    FINNHUB_API_KEY = os.getenv('FINNHUB_API_KEY')
+
+    # Scheduling configuration
+    UPDATE_INTERVAL_HOURS = int(os.getenv('UPDATE_INTERVAL_HOURS', '1'))
+
+    @classmethod
+    def validate(cls) -> bool:
+        """
+        Validate that required configuration values are present.
+
+        Returns:
+            True if configuration is valid, False otherwise
+        """
+        if not cls.DISCORD_TOKEN:
+            print("ERROR: DISCORD_TOKEN not set in environment")
+            return False
+
+        if not cls.CHANNEL_ID:
+            print("ERROR: CHANNEL_ID not set in environment")
+            return False
+
+        try:
+            int(cls.CHANNEL_ID)
+        except ValueError:
+            print("ERROR: CHANNEL_ID must be a numeric Discord channel ID")
+            return False
+
+        if cls.STOCK_API_PROVIDER == 'finnhub' and not cls.FINNHUB_API_KEY:
+            print("ERROR: FINNHUB_API_KEY not set in environment (required when STOCK_API_PROVIDER=finnhub)")
+            return False
+
+        return True