infra: Deploy live read-only demo instance

[ajianaz]

What

Deploy a live, read-only demo instance of TrapFall that people can click around without deploying.

Why

BMAD CMO finding: Must-fix before Show HN. People want to see the product before investing time in deployment. A live demo removes friction entirely.

Changes

1. Deploy TrapFall on available infrastructure (Docker, behind reverse proxy/Traefik)
2. Seed with demo data:
   • 3-5 demo projects
   • 50-100 sample events (mix of errors, warnings, info)
   • Sample performance transactions
   • Sample release health data
   • At least 1 resolved + 1 unresolved issue
3. Read-only mode: No login required for viewing. Disable event ingest from public (or rate-limit heavily). Disable destructive actions.
4. Demo credentials: Display on login page: "Demo mode — browse freely"
5. Subdomain: demo.trapfall.dev or try.trapfall.ajianaz.dev (depending on domain)
6. Health check: Monitor uptime, auto-restart if down

Testing

• Public URL accessible
• Dashboard loads, events visible
• MCP endpoint responds (read-only)
• No crash on edge cases (empty project, long event lists)