feat: complete agency site build (Phases 1-7)

Full Next.js 16 + Payload CMS 3.x agency site with:
- Homepage: Hero, TrustBar, Services, Configurator wizard, Process,
  Selected Works, Philosophy, CTA Banner
- Sub-pages: /services (3 pillars + AI Layer), /work/[slug] (case
  studies), /about (philosophy + story)
- Configurator: 3-step wizard with AI brief generation API
- i18n: Full EN/FR bilingual with next-intl
- Design system: Cormorant Garamond + Inter, celestial blue palette,
  glassmorphism nav, Framer Motion animations
- Payload CMS collections: Projects, Services, Submissions, Media

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.gitignore

@@ -0,0 +1,33 @@
+# dependencies
+node_modules/
+.pnp
+.pnp.js
+
+# next.js
+.next/
+out/
+
+# production
+build/
+dist/
+
+# env files
+.env
+.env.local
+.env.production
+
+# debug
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# misc
+.DS_Store
+*.tsbuildinfo
+next-env.d.ts
+
+# payload
+public/media/
+
+# superpowers
+.superpowers/