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>

docs/optimizable/frontend-consistency-improvements.md

@@ -15,7 +15,7 @@ Module ListViews use two different styling approaches:
 - **Scoped CSS + `hsl(var(--color-*))` theme tokens** — 27 modules (65%)
   - todo, notes, drink, contacts, journal, dreams, habits, firsts, calendar, chat, places, inventory, finance, news, body, calc, events, photos, automations, cycles, uload, picture, recipes
 - **Tailwind utility classes** — 13 modules (35%)
-  - nutriphi, plants, moodlit, cards, presi, storage, skilltree, context, guides, memoro, who, music, playground, citycorners, questions, times
+  - food, plants, moodlit, cards, presi, storage, skilltree, context, guides, memoro, who, music, playground, citycorners, questions, times
 
 ### Why it matters
 
@@ -33,7 +33,7 @@ Migrate the 13 Tailwind-based ListViews to scoped CSS with `hsl(var(--color-*))`
 
 ### Modules to migrate
 
-- [ ] nutriphi
+- [ ] food
 - [ ] plants
 - [ ] moodlit
 - [ ] cards