Add NATS account-balance SoT and statement review for customers, CS, and sales

Internal billing now uses verae.billing.* request-reply and pubs. zappier-account-balance tracks prepaid, credits, usage, and payments. Portal, admin, CS, and sales all review the same statement. Independent Forgejo repos stay split via push-module-repos.

packages/verae-fleet/services/customer-service.json

@@ -1,11 +1,11 @@
 {
   "id": "customer-service",
-  "title": "Customer-service credits",
+  "title": "Customer-service credits and review",
   "kind": "http",
   "package": "zappier-customer-service",
   "role": "customer-service",
   "managed": true,
-  "runtime": "HTTP :3011 CS credits → zappier-edge",
+  "runtime": "HTTP :3011 CS credits + NATS statement review",
   "health": { "type": "http", "path": "/health", "timeoutMs": 2000 },
   "ports": { "healthBase": 3011 },
   "spawn": {
@@ -15,8 +15,13 @@
   },
   "env": {
     "PORT": "3011",
-    "ZAPPIER_ADMIN_URL": "http://127.0.0.1:3000"
+    "ZAPPIER_ADMIN_URL": "http://127.0.0.1:3000",
+    "ACCOUNT_BALANCE_URL": "http://127.0.0.1:3010",
+    "NATS_URL": "nats://127.0.0.1:4222"
   },
-  "nats": { "in": [], "out": [] },
-  "notes": "Department API. Prepaid balances live on zappier-edge."
+  "nats": {
+    "in": [],
+    "out": ["verae.billing.statement.get", "verae.billing.balance.adjust"]
+  },
+  "notes": "CS review and credits. Balances live on account-balance over NATS."
 }