refactor: rename nutriphi module to food (Essen)

Complete rename across the entire monorepo pre-launch:
- Module, routes, API, i18n, standalone landing app directories
- All code identifiers, display names, logo component
- German user-facing label: "Essen" (English brand stays "Food")
- Dexie table nutriFavorites -> foodFavorites
- Infra configs (docker-compose, cloudflared, nginx, wrangler)

Zero residue of nutriphi remains. No data migration needed (pre-launch).

Follow-up: run pnpm install, update Cloudflare DNS
(food.mana.how), rename Cloudflare Pages project.

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

scripts/mac-mini/deploy-v2.sh

@@ -92,7 +92,7 @@ sleep 5
 
 # Create all needed databases
 for db in mana_auth mana_credits mana_user mana_subscriptions mana_analytics mana_sync \
-          chat todo calendar contacts storage cards music nutriphi planta \
+          chat todo calendar contacts storage cards music food planta \
           questions traces context citycorners photos presi skilltree; do
     docker compose -f "$COMPOSE_FILE" exec -T postgres \
         psql -U postgres -c "CREATE DATABASE $db;" 2>/dev/null || true