feat: Epic 1 completion - Marketing refactor met timeline en Bento Grid login

Epic 1 Stories (E1.S1 t/m E1.S6):

✨ E1.S1 - Verwijder EPD demo pagina
- Removed /epd route en credentials-box component
- Updated navigation: EPD Prototype → Login link
- Removed demo_users references from middleware en auth libs
- Cleaned up TypeScript errors in hero-section-2

✨ E1.S2 - Homepage vereenvoudigen
- Replaced lange manifesto (8000+ woorden) met statement section
- Added problem-solution-proof format (3 paragrafen)
- Removed comparison table, experiment CTA, manifesto content
- Timeline placeholder toegevoegd (completed in E1.S3)

✨ E1.S3 - Timeline component integreren
- Created BuildTimeline component (Aceternity UI pattern)
- Added timeline.json met 4 weken data (Week 1 completed)
- Features per week met icons, metrics, achievements
- Scroll-based animation met Framer Motion
- Responsive design (sticky titles, mobile/desktop layouts)

✨ E1.S4 - Timeline content structuur
- Structured JSON data in content/nl/timeline.json
- 15 Lucide icons voor feature types
- Week status badges (completed/in_progress/planned)
- Time savings display (< 5 sec vs 30 min)

✨ E1.S5 - Login pagina refactor
- Split-screen layout (60% features, 40% login)
- Teal gradient showcase met 4 feature cards
- Time savings badges per feature
- Responsive stack layout voor mobile
- Footer met AI Speedrun branding

✨ E1.S6 - Bento Grid showcase
- Replaced feature grid met Bento Grid layout
- Variable card sizes voor visual hierarchy (col-span-2, col-span-1)
- Dark slate background (from-slate-900)
- Gradient backgrounds per card (teal, amber, purple)
- Stats footer met 3 key metrics (90%+, < 5 sec, 4 weken)
- Hover animations en glassmorphism effects

🎨 Design System:
- Teal-first brand colors (#0D9488)
- Amber accents voor AI features (#F59E0B)
- Slate scale voor neutral colors
- WCAG AA compliant contrast

📦 Components:
- BuildTimeline (app/(marketing)/components)
- BentoGrid & BentoCard (components/ui)
- Button variants (components/ui)

📄 Content:
- timeline.json met volledige 4-weken data
- Features array per week
- Metrics en achievements tracking

🔧 Technical:
- Removed demo user scripts en migrations
- Updated middleware routes (removed /epd)
- TypeScript type fixes (hero-section-2, auth)
- Build succesvol: 13 routes generated

🚀 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

package.json

@@ -10,6 +10,8 @@
     "types:generate": "npx supabase gen types typescript --project-id dqugbrpwtisgyxscpefg > lib/supabase/types.ts"
   },
   "dependencies": {
+    "@radix-ui/react-icons": "^1.3.2",
+    "@radix-ui/react-slot": "^1.2.4",
     "@react-three/drei": "^10.7.7",
     "@react-three/fiber": "^9.4.0",
     "@supabase/ssr": "^0.7.0",