feat: rebuild 3 demo pages with interactive features + local SEO pages
- Rebuild /macon with cert badge popups, before/after slider, intelligent
form with urgency detection
- Rebuild /paysagiste with filterable gallery, seasonal banner, WhatsApp
floating button, devis form
- Rebuild /plombier with sticky call bar, 3-step diagnostic wizard,
transparent tariffs, zone map
- Add MagicReveal component (interactive before/after slider)
- Update Navbar with real phone number (06 04 40 81 57)
- Update DemosLive cards with new titles and subtitles
- Create sitemap.ts targeting local SEO zones (Douai, Orchies,
Valenciennes, Saint-Amand, Arleux, Denain)
- Create LocalSeoPage template + 6 city-specific landing pages
https://claude.ai/code/session_01H2aRGDaKgarPvhay2HxN6Y