Prep Martha Week 4 (Git + deploy optimified.com)

## Must complete by Monday April 20 sync - [x] Write Git basics guide — `guide-git-basics.md` - [ ] Create GitHub org for Optimified (if not exists) or decide on repo naming convention - [ ] Review Martha's styled optimified.com from Week 3 — this is the REAL company site, quality must be high - [ ] Set up webhook URL for optimified.com contact form (n8n → mock CRM) - [ ] Deploy optimified.com to Cloudflare Pages after Martha pushes to GitHub - [ ] Prepare April gate evaluation - [ ] Confirm with Sales: HVAC deal should be closing end of this week → hand to Martha for May build