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/stripeBilling.test.js

@@ -281,3 +281,24 @@ test('termine_einrichtung_einmalpreis', async () => {
   assert.equal(await ensurePrice('termineSetup'), id)
   assert.equal(st.calls.slice(again).filter((c) => c.method === 'POST').length, 0)
 })
+
+test('shop_einrichtung_einmalpreis', async () => {
+  const before = st.calls.length
+  const id = await ensurePrice('shopSetup')
+  const calls = st.calls.slice(before)
+  const created = calls.filter((c) => c.method === 'POST' && c.path === '/v1/prices')
+  assert.equal(created.length, 1)
+  assert.equal(created[0].body['unit_amount'], '29900')
+  assert.equal(created[0].body['lookup_key'], 'webklar_shop_einrichtung_29900')
+  assert.equal(created[0].body['nickname'], 'Webshop-Einrichtung 299 €')
+  assert.ok(!Object.keys(created[0].body).some((k) => k.startsWith('recurring')), 'kein recurring')
+  assert.equal(st.prices.get(id).recurring, null)
+  const products = calls.filter((c) => c.method === 'POST' && c.path === '/v1/products')
+  assert.equal(products.length, 1)
+  assert.equal(products[0].body['name'], 'Webshop – Einrichtung')
+  assert.equal(products[0].body['metadata[webklar]'], 'shop-einrichtung')
+  // zweiter Aufruf: kein zweiter Preis (auch ohne Cache per lookup_key gefunden)
+  const again = st.calls.length
+  assert.equal(await ensurePrice('shopSetup'), id)
+  assert.equal(st.calls.slice(again).filter((c) => c.method === 'POST').length, 0)
+})