Add GitHub Actions workflows for:
- Sidian (The Debugger) - Bug investigation and error analysis
- Cordelia (The Diplomat) - Team coordination and PR mediation
- Octavia (The Orchestrator) - Service orchestration and health checks
- Cecilia (The Data Scientist) - Metrics analysis and trend detection
- Copilot (The Pair Programmer) - Code suggestions and pattern detection
- ChatGPT (The Conversationalist) - General assistance and brainstorming
This completes the 16-agent system with full GitHub workflow coverage.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
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