Convert baserow, letta, invoicing to mesh catalog DB consumers

Mirror the postgres-consumer shape (keycloak/nextcloud): requires the
backing service(s), binds/secrets for the delivered credential, and a
server container that reads it from an interpolated env file.

- baserow: consumes postgres-database + redis-cache; tooled (dormant
  until an account is configured, like gitea's token).
- letta: consumes postgres-database; tooled, live via a mesh-minted
  server-password injected into both server and runtime.
- invoicing: consumes mongodb-database + s3-bucket; plain two-container
  service (app + api), no tools.

Digests pinned for baserow and letta; invoicing keeps private-registry
tags (DIGEST-UNRESOLVED). redis-cache and mongodb-database consumer
shapes are inferred (no prior consumer in the catalog).

Claude-Session: https://claude.ai/code/session_01LrgweAeERJYBg88c5cKDzF

modules/invoicing/module.json

@@ -0,0 +1,98 @@
+{
+  "module": "invoicing",
+  "version": "1",
+  "capabilities": [
+    "container-runtime"
+  ],
+  "requires": [
+    "mongodb-database",
+    "s3-bucket"
+  ],
+  "contributes": {
+    "mongodb-database": {
+      "name": "invoicing"
+    },
+    "s3-bucket": {
+      "bucket": "invoicing"
+    }
+  },
+  "binds": {
+    "mongodb-database": "/var/lib/invoicing/database.json",
+    "s3-bucket": "/var/lib/invoicing/store.json"
+  },
+  "secrets": {
+    "mongodb-database": "/var/lib/invoicing/database.secret",
+    "s3-bucket": "/var/lib/invoicing/store.secret"
+  },
+  "listens": [
+    {
+      "port": 80,
+      "protocol": "tcp",
+      "from": "mesh",
+      "why": "the invoicing web frontend; a public name is a route grant later"
+    },
+    {
+      "port": 9000,
+      "protocol": "tcp",
+      "from": "mesh",
+      "why": "the invoicing REST API the frontend and integrations call"
+    }
+  ],
+  "resources": [
+    {
+      "id": "mesh-state",
+      "type": "directory",
+      "path": "/var/lib/mesh/invoicing",
+      "mode": "0700"
+    },
+    {
+      "id": "state",
+      "type": "directory",
+      "path": "/var/lib/invoicing",
+      "mode": "0700"
+    },
+    {
+      "id": "api-env",
+      "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"
+    },
+    {
+      "id": "net",
+      "type": "network",
+      "name": "invoicing"
+    },
+    {
+      "id": "app",
+      "type": "container",
+      "name": "invoicing-app",
+      "image": "registry-api.example/novox/invoicing-app:latest",
+      "network": "invoicing",
+      "env": {
+        "UID": "2201",
+        "GID": "2201"
+      },
+      "ports": [
+        "80"
+      ]
+    },
+    {
+      "id": "api",
+      "type": "container",
+      "name": "invoicing-api",
+      "image": "registry-api.example/novox/invoicing-api:latest",
+      "network": "invoicing",
+      "env": {
+        "UID": "2201",
+        "GID": "2201"
+      },
+      "env-file": [
+        "/var/lib/invoicing/api.env"
+      ],
+      "ports": [
+        "9000"
+      ]
+    }
+  ]
+}