Webshop A1/A2: Konfiguration, Schalter, Katalog shopSetup, Schema und Setup-Skript

config.shop (SHOP_ENABLED, SHOP_PILOT_EMAILS, SHOP_UPLOAD_DIR, STRIPE_CONNECT_WEBHOOK_SECRET), config.shopSetup (299 € einmalig),
Collection-IDs shopConfig/shopProducts/shopOrders/shopWiderrufe, services/shop/schalter.js, Katalogschluessel shopSetup in
stripeBilling und stripe-products.mjs, services/shop/schema.js, scripts/shop-setup.mjs (--check), schemaKeys fuer die Test-Mocks.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

test/support/schema.js

@@ -1,5 +1,6 @@
 import { readFileSync } from 'node:fs'
 import { TERMINE_COLLECTIONS } from '../../server/services/termine/schema.js'
+import { SHOP_COLLECTIONS } from '../../server/services/shop/schema.js'
 import { FEATURE_CONSENT_ATTRIBUTES, PORTAL_FEATURE_ATTRIBUTES } from '../../scripts/feature-setup.mjs'
 
 // Setup-Skripte, die Collections in Appwrite anlegen (Blockformat: 'id', ... \n  ],)
@@ -9,12 +10,14 @@ const SETUP_SCRIPTS = ['setup-abo-collections.mjs', 'setup-finanzen.mjs']
  * Attribut-Schlüssel einer Collection, wie sie scripts/setup-abo-collections.mjs bzw.
  * scripts/setup-finanzen.mjs in Appwrite anlegen. Tests geben sie dem Appwrite-Nachbau als Schema:
  * Schreibt der Code ein Feld, das das Setup-Skript nicht anlegt, scheitert der Test wie Appwrite in
- * Produktion. Die Termine-Collections kommen aus server/services/termine/schema.js (scripts/termine-setup.mjs);
+ * Produktion. Die Termine-Collections kommen aus server/services/termine/schema.js (scripts/termine-setup.mjs),
+ * die Shop-Collections aus server/services/shop/schema.js (scripts/shop-setup.mjs);
  * portalFeatures bekommt zusaetzlich die Attribute aus scripts/feature-setup.mjs (PORTAL_FEATURE_ATTRIBUTES);
  * featureConsents (Zustimmungsnachweis) steht ganz dort (FEATURE_CONSENT_ATTRIBUTES).
  */
 export function schemaKeys(collection) {
   if (Object.hasOwn(TERMINE_COLLECTIONS, collection)) return TERMINE_COLLECTIONS[collection].attributes.map((a) => a.key)
+  if (Object.hasOwn(SHOP_COLLECTIONS, collection)) return SHOP_COLLECTIONS[collection].attributes.map((a) => a.key)
   if (collection === 'featureConsents') return FEATURE_CONSENT_ATTRIBUTES.map((a) => a.key)
   for (const script of SETUP_SCRIPTS) {
     const src = readFileSync(new URL(`../../scripts/${script}`, import.meta.url), 'utf8')