Pricing page and cloud launch surface on www

[jrhizor]

Context

Marketing/launch surface for Elmo Cloud in `apps/www`.

Scope

• Pricing page: Starter $99 / Pro $299 / Business $649 + Custom, monthly/annual toggle (annual = 2 months free)
  • Headline rows: brands (1/2/5), tracked prompts (50/150/350), choose-4 platform menu, 4×/day sampling on standard platforms, Claude tracking (web-grounded or base-model, daily) on 20/30 prompts for Pro/Business + $5/prompt expansion, API access on all tiers, unlimited seats
  • Custom column: GPT-5 Search, web-search API targets, 7×/day research-grade sampling, SSO, custom limits
  • Comparison row vs the free options (live demo, self-hosted)
• Methodology positioning: Profound and Peec sample each prompt once per day; Elmo samples standard platforms 4×/day (published research recommends ≥7 — arXiv 2604.07585, available on Custom). Claude tracking at daily cadence is self-serve here and enterprise-only elsewhere.
• Signup CTAs wired to the cloud app
• Cloud docs section (getting started, plan limits, platform list, Claude tracking explainer, sampling methodology page, billing FAQ)
• Positioning update: three ways to run Elmo — self-hosted (free), cloud (SaaS), whitelabel (enterprise)
• No trial messaging: point evaluators at the live demo and self-hosted

Notes

Validate with a real build (`pnpm --filter @workspace/www build`) — type/lint checks miss MDX/codegen errors.