prelaunch: create launch dashboard + daily cron updates

- New launch-dashboard.html: KPI grid, 14-day action plan, strategy
  overview, items-needed checklist, daily routine, cron schedule
- Nav link '🚀 Launch' added to main site header
- data/launch-status.json: data file updated daily at 03:00 by cron
- scripts/update-dashboard.py: advances day, probes KPIs, marks
  today's actions
- cron jobs configured:
  • 03:00 daily — dashboard update script + git commit/push
  • 09:00 daily — 1-hour working session reminder

index.html

@@ -1466,6 +1466,7 @@
             <ul class="nav-links" id="nav-links">
                 <li><a href="#pricing">Pricing</a></li>
                 <li><a href="#faq">FAQ</a></li>
+                <li><a href="launch-dashboard.html" style="color:var(--accent);">🚀 Launch</a></li>
             </ul>
             <div class="header-actions">
                 <a href="https://app.derez.ai" class="btn-login">