feat(site): port stitch design system + seed-ready content model

Ports the "Technical Editorial" design sample into real TSX wired to
Payload globals/collections. Home/About/Projects (list+detail)/Contact
pages render against Payload data. Expands schemas (Home principles,
About timeline/skills/gear, Contact channels) to cover the full design
surface. Adds seed script that populates realistic AI-drafted content
for first boot. Defers writing/resume routes per scope cut.

- Design tokens: Material-3 palette + Space Grotesk/Inter typography
  scale + dot-grid + glassmorphism utilities
- Shared layout: Nav, Footer, StatusTerminal, GridOverlay, Button,
  TechChip in src/components/site
- Schemas: expand 5 globals + 6 collections; add auto-slug hook
- Seed: scripts/seed.ts — idempotent upsert for media, categories,
  6 projects, 8 gear, 3 posts, 5 globals; generates placeholder admin
- Contact: form + /api/contact route with optional Turnstile verify
- Rename TURNSTILE_SITE_KEY -> NEXT_PUBLIC_TURNSTILE_SITE_KEY (client)
- Remove dead src/components/SiteHeader|SiteFooter|StatusTerminal

docker-compose.swarm.yml

@@ -32,7 +32,7 @@ services:
       NEXT_PUBLIC_SITE_URL: https://${SITE_DOMAIN:-jasonwoltje.com}
       NEXT_PUBLIC_BUILD_SHA: ${WEB_IMAGE_TAG}
       NEXT_PUBLIC_BUILD_REV: ${WEB_IMAGE_TAG}
-      TURNSTILE_SITE_KEY: ${TURNSTILE_SITE_KEY:-}
+      NEXT_PUBLIC_TURNSTILE_SITE_KEY: ${NEXT_PUBLIC_TURNSTILE_SITE_KEY:-}
       TURNSTILE_SECRET_KEY: ${TURNSTILE_SECRET_KEY:-}
       NEXT_PUBLIC_UMAMI_SRC: ${NEXT_PUBLIC_UMAMI_SRC:-}
       NEXT_PUBLIC_UMAMI_WEBSITE_ID: ${NEXT_PUBLIC_UMAMI_WEBSITE_ID:-}