invoicing: the photos lessons, applied before its window

The mongo credential authenticates against its own database and the
database is the granted one (mesh_novox_invoice), not the contributed
name the provisioner ignores. Same for the store: the key is sealed to
the derived bucket (mesh-novox-invoice) — the data mirrors in during the
window, the ncloud/photos pattern. And the api gets the route
contribution it always needed: invoicing-api.novox.be is today a traefik
container label, invisible to every file survey, and it must be a grant
before the edge can ever flip.

modules/invoicing/module.json

@@ -18,8 +18,14 @@
       "bucket": "invoicing"
     },
     "route": {
-      "label": "invoicing",
+      "site": {
-      "port": 80
+        "label": "invoicing",
+        "port": 80
+      },
+      "api": {
+        "label": "invoicing-api",
+        "port": 9000
+      }
     }
   },
   "binds": {
@@ -63,7 +69,7 @@
       "type": "file",
       "path": "/var/lib/invoicing/api.env",
       "mode": "0600",
-      "content": "NODE_ENV=production\nPORT=9000\nMONGO_URL=mongodb://${bound:mongodb-database:as}:${secret:mongodb-database}@${bound:mongodb-database:at}:${bound:mongodb-database:port}/invoicing?authSource=admin\nMINIO_BUCKET=invoicing\nMINIO_ENDPOINT=${bound:s3-bucket:at}\nMINIO_PORT=${bound:s3-bucket:port}\nMINIO_ACCESSKEY=${bound:s3-bucket:as}\nMINIO_SECRET=${secret:s3-bucket}\n"
+      "content": "NODE_ENV=production\nPORT=9000\nMONGO_URL=mongodb://${bound:mongodb-database:as}:${secret:mongodb-database}@${bound:mongodb-database:at}:${bound:mongodb-database:port}/${bound:mongodb-database:as}?authSource=${bound:mongodb-database:as}\nMINIO_BUCKET=mesh-novox-invoice\nMINIO_ENDPOINT=${bound:s3-bucket:at}\nMINIO_PORT=${bound:s3-bucket:port}\nMINIO_ACCESSKEY=${bound:s3-bucket:as}\nMINIO_SECRET=${secret:s3-bucket}\n"
     },
     {
       "id": "net",