Wire zappier-edge into the live stack and add billing department APIs

Fleet now spawns the real zappier and middleware processes. Metered
timestamp/receipt/hash calls proxy to middleware when ZAPPIER_UPSTREAM
is set. CS credits, sales per-customer pricing, and QuickBooks export
are separate repos plugged into zappier-edge admin.

packages/overview/02-modules-and-repos.md

@@ -7,7 +7,10 @@ Each runtime piece is its **own git repo** on Forgejo (`git.georgelambert.org`,
 | **overview** | `packages/overview` | This high-level map |
 | **verae-nats-process** | `packages/verae-nats-process` | **Template** for a new addressed NATS process |
 | **master-zapier-plan-draft** | workspace root | Combined snapshot (`main` and `master`) |
-| **zappier-edge** | `packages/zappier` | Metered HTTPS, portal, admin, Stripe `zappier.api_cents` |
+| **zappier-edge** | `packages/zappier` | Metered HTTPS, portal, admin, Stripe; **proxies Verae calls to middleware** |
+| **zappier-customer-service** | `packages/zappier-customer-service` | CS goodwill credits onto prepaid balances |
+| **zappier-sales-pricing** | `packages/zappier-sales-pricing` | Sales per-customer tier / multiplier |
+| **zappier-accounting-export** | `packages/zappier-accounting-export` | QuickBooks IIF + accounting CSV |
 | **verae-middleware** | `packages/verae-zapier-middleware` | `/zapier/v1`, job wait, NATS publishers/workers |
 | **verae-zapier-app** | `packages/verae-zapier` | Full Zapier nouns (timestamp, wait, batch, hash + tree lookup) |
 | **verae-activate** | `packages/verae-activate` | Activate-now (Add Numbers, Echo, SHA256, mock timestamp) |