feat: workspace with monthly analysis + token tracking

Complete setup includes:
- Monthly analysis template with token/cost tracking
- Daily, weekly, monthly cron jobs for analysis
- Token tracking system with CSV logging
- Model recommendations for cost optimization
- SSH key for GitHub remote
- Security-first .gitignore

Cron jobs added:
- daily-token-tracking (9am AEST)
- weekly-token-report (Sunday 10am AEST)
- monthly-analysis (1st of month 2am AEST)

System will now:
- Track all token usage by model and task type
- Alert if daily cost >
- Generate weekly/monthly reports
- Optimize model usage based on data
