Add customer names on the ledger, staff session login, and exclusive jobs.events.

Account-balance stores display names and looks up by name. Edge writes
names on customer create/edit; staff UIs join from edge when needed.
New verae-staff-session issues a host cookie; department HTML redirects
when STAFF_AUTH=1. JOBS_EVENTS_EXCLUSIVE lets jobs-events own the durable
consumer. Catalog index is cards; disabled fleet machines are grey.

packages/zappier/src/statement.ts

@@ -4,6 +4,7 @@ import { UsageEntry } from './usage';
 
 export function composeStatement(args: {
   customerId: string;
+  name?: string;
   veraeUserId?: string;
   prepaidCents: number;
   credits: CreditAdjustment[];
@@ -22,6 +23,7 @@ export function composeStatement(args: {
     }));
   return {
     customerId: args.customerId,
+    name: args.name,
     veraeUserId: args.veraeUserId,
     prepaidCents: args.prepaidCents,
     credits: args.credits.filter((c) => c.customerId === args.customerId),