add pipeline orchestrator, mailbox 1583 flow, EIN + virtual-mailbox services

- Pipeline orchestrator: chains sequential fulfillment for new carrier bundles
  (formation → EIN → USDOT → MC → BOC-3 → MCS-150 → D&A → UCR)
- Mailbox setup: Anytime Mailbox provisioning with USPS 1583 e-sign + online notarization
- New services: ein-application ($79), virtual-mailbox ($149/yr)
- Registered all new handlers in SERVICE_HANDLERS
- Pipeline cron: every 5 minutes

api/src/routes/compliance-orders.ts

@@ -380,6 +380,18 @@ const COMPLIANCE_SERVICES: Record<
     erpnext_item: "ENTITY-REINSTATEMENT",
     discountable: true,
   },
+  "virtual-mailbox": {
+    name: "Virtual Mailbox (1 Year)",
+    price_cents: 14900,
+    erpnext_item: "VIRTUAL-MAILBOX",
+    discountable: true,
+  },
+  "ein-application": {
+    name: "EIN Application (IRS SS-4)",
+    price_cents: 7900,
+    erpnext_item: "EIN-APPLICATION",
+    discountable: true,
+  },
   "entity-upgrade-bundle": {
     name: "Entity Upgrade Package (Sole Prop → LLC)",
     price_cents: 59900,