feat: add static landing page with Vercel deployment

[collinsezedike]

Closes #38

Summary

• Adds apps/landing/index.html — single-file static landing page (HTML + CSS + JS, no framework, no build step)
• Removes the previous React-based landing page from apps/web/; dashboard is the default view again
• Adds vercel.json at the repo root pointing Vercel at apps/landing/ with no build command
• Removes deploy.yml GitHub Pages workflow — Vercel handles deployment via its GitHub integration

Design

Dark navy (#070d19) base · Electric blue + emerald gradient accents · Inter font · Static background orbs + grain texture · Glassmorphism cards · Generous whitespace throughout

Sections

#	Section
1	Nav — wordmark + View on GitHub
2	Hero — gradient headline, sub-copy, email waitlist with validation + confirmation state, Stellar badge
3	Problem — 33.7% Nigeria inflation, 6.2% remittance cost, <$0.001 Stellar fee
4	How it works — 3 numbered steps with connector line
5	Protocols — Blend Capital (12–18% APY) and DeFindex cards
6	Built in public — GitHub repo, open issues, Drips Wave Program badge
7	Footer — MIT license, GitHub, Stellar

Deploy setup (after merge)

1. Go to vercel.com/new and import collinsezedike/meridian
2. Vercel will auto-detect vercel.json — no additional config needed
3. Every push to main deploys automatically

Test plan

• Open apps/landing/index.html directly in a browser — all 7 sections render
• Nav gains backdrop blur on scroll
• Waitlist form validates email format, shows error highlight on bad input, shows confirmation on success
• All external links (GitHub, Blend, DeFindex, Stellar) open in new tab
• Fully responsive at 375px mobile and 1440px desktop
• CI lint + typecheck pass

[vercel]

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Project	Deployment	Actions	Updated (UTC)
meridian	Ready	Preview, Comment	May 10, 2026 11:28pm
meridian-web	Ready	Preview, Comment	May 10, 2026 11:28pm