Initial landing page for SagePHR

- Hero section with clear value prop
- Problem/solution framing
- Feature grid
- Pricing section (early adopter /mo)
- Email waitlist signup (Formspree)
- Responsive design
- Dark theme with sage green accent

README.md

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+# SagePHR Landing Page
+
+Personal Health Record SaaS - landing page for early adopter waitlist.
+
+## Development
+
+```bash
+pnpm install
+pnpm dev
+```
+
+## Deploy
+
+```bash
+pnpm build
+# Static export to ./out
+```
+
+## Target Launch
+
+Q3 2026