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>

packages/shared-types/src/ai-schemas.ts

@@ -36,7 +36,7 @@ import { z } from 'zod';
 //   - Changing a type               → BUMP (zod parse fails on old client)
 //
 // History:
-//   1 — initial schemas (foods/totalNutrition for nutriphi,
+//   1 — initial schemas (foods/totalNutrition for food,
 //       scientificName/commonNames/etc for plants)
 
 export const AI_SCHEMA_VERSION = '1' as const;
@@ -59,19 +59,21 @@ export interface AiResponseEnvelope<T> {
  * side is stale.
  */
 export class AiSchemaVersionMismatchError extends Error {
-	constructor(
-		public readonly received: string,
-		public readonly expected: AiSchemaVersion = AI_SCHEMA_VERSION
-	) {
+	readonly received: string;
+	readonly expected: AiSchemaVersion;
+
+	constructor(received: string, expected: AiSchemaVersion = AI_SCHEMA_VERSION) {
 		super(
 			`AI wire-format version mismatch: received "${received}", expected "${expected}". ` +
 				`The client and server are out of sync — reload the page or redeploy.`
 		);
 		this.name = 'AiSchemaVersionMismatchError';
+		this.received = received;
+		this.expected = expected;
 	}
 }
 
-// ─── NutriPhi: meal photo / text analysis ────────────────────────
+// ─── Food: meal photo / text analysis ────────────────────────
 
 const AnalyzedFoodSchema = z.object({
 	name: z.string().describe('The food item name in German'),

packages/shared-types/src/index.ts

@@ -5,25 +5,25 @@
  */
 
 // Theme types
-export * from './theme';
+export * from './theme.ts';
 
 // Auth types
-export * from './auth';
+export * from './auth.ts';
 
 // UI types
-export * from './ui';
+export * from './ui.ts';
 
 // Common utility types
-export * from './common';
+export * from './common.ts';
 
 // Contact types for cross-app integration
-export * from './contact';
+export * from './contact.ts';
 
 // Landing page configuration types
-export * from './landing-config';
+export * from './landing-config.ts';
 
 // AI structured-output Zod schemas (shared between mana-api + web frontend)
-export * from './ai-schemas';
+export * from './ai-schemas.ts';
 
 // API types
 export interface User {