feat: Discord bot Phase 1 MVP implementation

Implemented Phase 1 of ClaudeTools Discord bot with:

Core Features:
- Discord.py bot with message content intents
- Claude API integration with streaming responses
- Thread-based conversations with context management
- @mention handling with automatic thread creation
- Tool definitions for future ClaudeTools/remediation integration

Architecture:
- bot/main.py: Entry point with Discord client setup
- bot/config.py: Pydantic Settings for environment config
- bot/claude/client.py: Anthropic SDK wrapper with streaming
- bot/claude/tools.py: Tool definitions and system prompt
- bot/handlers/message_handler.py: Discord message handling

Configuration:
- requirements.txt: Python dependencies (discord.py, anthropic, httpx)
- .env.example: Environment variable template
- .gitignore: Sensitive data protection
- README.md: Comprehensive setup and usage guide

Next Steps (Phase 2):
- Implement tool execution (ClaudeTools API client)
- Add user role mapping and permissions
- Implement audit logging

Deployment Target: BEAST (Windows) as NSSM service
Test: @ClaudeTools hello should create thread and stream response

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

projects/discord-bot/.gitignore

@@ -0,0 +1,50 @@
+# Environment and secrets
+.env
+*.key
+*.pem
+
+# Python
+__pycache__/
+*.py[cod]
+*$py.class
+*.so
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+
+# Virtual environments
+venv/
+ENV/
+env/
+
+# IDEs
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+
+# Logs
+logs/
+*.log
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Project specific
+conversations.db
+artifacts/