feat(site): add marketing landing page

[jeremymcs]

What

Adds a standalone marketing site under site/, intended to run as its own Vercel project (Root Directory site). The existing GitHub Pages docs site in docs/ is untouched — the landing page links out to it.

Static HTML compiled with the Tailwind CLI. No framework, no runtime dependencies. site/ carries its own package.json so the marketing build never pulls the application's dependency tree.

Page contents

One long page: hero → the stale-PR problem → watch/sync/triage/dispatch (including the real pending → queued → in_progress → resolved lifecycle as inline SVG) → six feature sections built on product screenshots → safety and local-first defaults → the four interfaces → install and a cautious first run → FAQ → footer.

Copy is sourced from README.md, package.json and docs/public/. No invented metrics, no testimonials, no user counts. The README's own caution — that PatchDeck can spend paid agent usage when automation is enabled — is surfaced on the page rather than hidden.

Design

Follows design-system/patchdeck/MASTER.md for typography (Fira Code / Fira Sans) and the green CTA, but uses the product's real near-black surfaces and blue/amber/red status accents so the page resembles the app it describes. This is a deliberate deviation from MASTER.md, which specifies green as the sole accent.

Asset decisions

• Screenshots pre-optimized to webp and committed (2.6 MB → 608 KB) rather than converted during the build, since the conversion tooling is macOS/Homebrew-local and would not run on Vercel's Linux builders. Regeneration steps are in site/README.md.
• docs/assets/hero-background.png (1.5 MB) is not used — it is a plain radial gradient, reproduced in CSS.
• docs/assets/sdlc-bottleneck.png is deliberately unused: it is a light-background image asserting an unsourced "90% of total delay" statistic.

Verification

• Rendered at 1440px and 375px — 0 console errors or warnings, no horizontal page overflow.
• All external links return 200. The npm package link 403s to curl (bot protection); confirmed via the registry API that @jeremymcs/patchdeck@1.6.0 exists and matches the version shown on the page.
• Mobile nav and copy-to-clipboard verified working.
• npm run lint and npm run check pass; no server or client code is touched.

Follow-up before this goes live

Canonical URLs are currently the placeholder https://patchdeck.vercel.app/. Once the real domain is attached they need updating in index.html (canonical, OG/Twitter meta, JSON-LD), public/robots.txt, and public/sitemap.xml — documented in site/README.md.

The Vercel project does not exist yet. A production deploy from main will only succeed once this branch is merged, since site/ does not exist on main.

Implementation plan: docs/plans/marketing-website.md.

🤖 Generated with Claude Code

https://claude.ai/code/session_01LF9K9Y3sGMA2EAQVqF93JW