feat(automations): auto-email invoice on wire-transfer placed and on fulfillment

- New ShopSettings fields: autoEmailOnWireTransferPlaced,
  autoEmailOnFulfilledNonWireTransfer, wireTransferGatewayNames.
- New Automations section in settings with two toggles + gateway list.
- orders/create webhook now fires automation 1 (wire-transfer placed).
- New orders/fulfilled webhook fires automation 2 (non-wire-transfer fulfilled).
- Shared helper services/invoice/automations.server.ts handles classification
  and idempotent generate+send (skips if already sent).
- Webhook subscription for orders/fulfilled added to all 3 app tomls.

This is the non-Plus fallback for Shopify Flow, whose custom-app actions
are gated to Plus stores only.

prisma/migrations/20260512120000_add_automation_settings/migration.sql

@@ -0,0 +1,4 @@
+-- AlterTable
+ALTER TABLE "ShopSettings" ADD COLUMN "autoEmailOnWireTransferPlaced" BOOLEAN NOT NULL DEFAULT false;
+ALTER TABLE "ShopSettings" ADD COLUMN "autoEmailOnFulfilledNonWireTransfer" BOOLEAN NOT NULL DEFAULT false;
+ALTER TABLE "ShopSettings" ADD COLUMN "wireTransferGatewayNames" TEXT NOT NULL DEFAULT '';

prisma/schema.prisma

@@ -99,6 +99,17 @@ model ShopSettings {
   emailSubjectEn    String   @default("")
   emailBodyHtmlEn   String   @default("")
 
+  // Automations (webhook-driven, as a fallback to Shopify Flow which only
+  // exposes custom-app actions on Plus stores).
+  // 1) Wire-transfer order is placed → auto-email the invoice immediately.
+  autoEmailOnWireTransferPlaced     Boolean @default(false)
+  // 2) Order is fulfilled and is NOT a wire-transfer order → auto-email.
+  autoEmailOnFulfilledNonWireTransfer Boolean @default(false)
+  // Comma-separated list of payment-gateway names treated as "wire transfer"
+  // (matched case-insensitively, substring). Empty falls back to a sensible
+  // default ("manual,Überweisung,Wire Transfer,Bank Transfer,Vorkasse,Bank Deposit").
+  wireTransferGatewayNames          String  @default("")
+
   createdAt         DateTime @default(now())
   updatedAt         DateTime @updatedAt