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>

.env.development

@@ -144,7 +144,7 @@ UMAMI_WEBSITE_ID_CALENDAR_LANDING=84862d98-727e-4e25-8645-639241dd1544
 UMAMI_WEBSITE_ID_CLOCK_LANDING=0332b471-a022-46af-a726-0f45932bfd58
 UMAMI_WEBSITE_ID_PICTURE_LANDING=d3ac98e6-0d1a-47a3-a218-2a81fff596bd
 UMAMI_WEBSITE_ID_TODO_LANDING=538eb4b6-2241-45a3-994d-cdb9bdb0c250
-UMAMI_WEBSITE_ID_NUTRIPHI_LANDING=15610d03-b280-4b92-9c71-0ef89c23202b
+UMAMI_WEBSITE_ID_FOOD_LANDING=15610d03-b280-4b92-9c71-0ef89c23202b
 UMAMI_WEBSITE_ID_PRESI_LANDING=dd485016-0077-47b9-9f59-ab2c6c1730ee
 UMAMI_WEBSITE_ID_MUKKE_LANDING=b2c9ab34-3c53-4463-9dde-1ecf098886a5
 
@@ -219,18 +219,18 @@ PICTURE_APP_ID=picture-app
 PICTURE_MANA_SERVICE_KEY=
 
 # ============================================
-# NUTRIPHI PROJECT
+# FOOD PROJECT
 # ============================================
 
-NUTRIPHI_BACKEND_PORT=3023
-NUTRIPHI_DATABASE_URL=postgresql://mana:devpassword@localhost:5432/mana_platform
-NUTRIPHI_APP_ID=nutriphi
+FOOD_BACKEND_PORT=3023
+FOOD_DATABASE_URL=postgresql://mana:devpassword@localhost:5432/mana_platform
+FOOD_APP_ID=food
 
 # Google Gemini API for food image analysis
 GEMINI_API_KEY=AIzaSyBR9iP74hlo-mhI-Cl4QEvKprRzPPMb-GA
 
 # S3 Storage (uses MinIO locally via shared S3_* variables)
-NUTRIPHI_S3_PUBLIC_URL=http://localhost:9000/nutriphi-storage
+FOOD_S3_PUBLIC_URL=http://localhost:9000/food-storage
 
 # ============================================
 # ZITARE PROJECT
@@ -472,5 +472,5 @@ GPU_API_KEY=sk-gpu-cf483ede1e05e28fba5e56c94cd3c24e7c245e57816d3e86
 GPU_SERVER_URL=https://gpu.mana.how
 GPU_SERVER_LAN_URL=http://192.168.178.11
 
-# Vision Model for NutriPhi + Planta (local, replaces Google Gemini)
+# Vision Model for Food + Planta (local, replaces Google Gemini)
 VISION_MODEL=ollama/gemma3:12b