A definition names no host path for its own data

Twenty-eight modules' data directories are placed: the root as place ".", a sub-directory named by
its id, and every host-side reference — binds, secrets, own secrets, grants, receives, file paths,
mounts, env-files — as ${dir:<id>}. Resolved on the default root every path is the one the manifest
named before, which the controller's TestPlacedDirectoriesKeepTheirPaths proves over both checkouts;
so no data moves and no machine sees a change. Five directories whose id is not their last segment
keep their path as a placement (novox/hq issue 119, ADR 0112, design 27).

modules/invoicing/module.json

@@ -26,13 +26,13 @@
     }
   },
   "binds": {
-    "mongodb-database": "/var/lib/invoicing/database.json",
-    "s3-bucket": "/var/lib/invoicing/store.json",
-    "route": "/var/lib/invoicing/route.json"
+    "mongodb-database": "${dir:state}/database.json",
+    "s3-bucket": "${dir:state}/store.json",
+    "route": "${dir:state}/route.json"
   },
   "secrets": {
-    "mongodb-database": "/var/lib/invoicing/database.secret",
-    "s3-bucket": "/var/lib/invoicing/store.secret"
+    "mongodb-database": "${dir:state}/database.secret",
+    "s3-bucket": "${dir:state}/store.secret"
   },
   "listens": [
     {
@@ -60,13 +60,13 @@
     {
       "id": "state",
       "type": "directory",
-      "path": "/var/lib/invoicing",
-      "mode": "0700"
+      "mode": "0700",
+      "place": "."
     },
     {
       "id": "api-env",
       "type": "file",
-      "path": "/var/lib/invoicing/api.env",
+      "path": "${dir:state}/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}/${bound:mongodb-database:as}?authSource=${bound:mongodb-database:as}\nMONGO_DB=${bound:mongodb-database:as}\nMINIO_BUCKET=mesh-novox-invoice\nMINIO_ENDPOINT=${bound:s3-bucket:at}\nMINIO_PORT=${bound:s3-bucket:port}\nMINIO_ACCESSKEY=${bound:s3-bucket:as}\nMINIO_SECRET=${secret:s3-bucket}\n"
     },
@@ -103,7 +103,7 @@
         "GID": "2201"
       },
       "env-file": [
-        "/var/lib/invoicing/api.env"
+        "${dir:state}/api.env"
       ],
       "ports": [
         "9000"