feat: Add database setup guide and local configuration files

- Added DATABASE_SETUP.md with comprehensive guide for PostgreSQL and Redis installation on Windows
- Created .claude/settings.local.json with permission settings for pytest and database fix scripts
- Updated .gitignore to exclude .env.backup file
- Included database connection test utilities in lyra/database_setup.py
- Added environment variable configuration examples for local development

lyra/discord/__init__.py

@@ -0,0 +1,14 @@
+"""
+Lyra Discord Integration
+
+Provides Discord bot functionality with human-like behavior patterns,
+natural response timing, and emotional intelligence.
+"""
+
+from .bot import LyraDiscordBot, HumanBehaviorEngine, create_discord_bot
+
+__all__ = [
+    "LyraDiscordBot",
+    "HumanBehaviorEngine",
+    "create_discord_bot"
+]