docs: zappier-edge is now verae-edge-billing

The billing edge repo and ns1 service were renamed on 2026-10-06
(marchon/verae-edge-billing, verae-edge-billing.service, /opt/verae/verae-edge-billing).
Old Forgejo URLs redirect; the old unit name and path remain as aliases/symlinks.

test/fleet.test.js

@@ -52,7 +52,7 @@ describe('verae-fleet', () => {
     const ids = rows.map((r) => r.id);
     for (const need of [
       'nats',
-      'zappier-edge',
+      'verae-edge-billing',
       'access-authz',
       'access-web',
       'access-api',

test/rtt.test.js

@@ -33,7 +33,7 @@ describe('machine placement', () => {
 
   it('skips machines that do not allow the role', () => {
     const machines = [
-      { id: 'edge', enabled: true, capacity: 8, roles: ['zappier-edge'] },
+      { id: 'edge', enabled: true, capacity: 8, roles: ['verae-edge-billing'] },
       { id: 'trees', enabled: true, capacity: 8, roles: ['tree-node'] },
     ];
     const pick = pickMachine(machines, [], 'tree-node', 'tree-node');