mosquitto: its directories are placed, not stated, and it runs the build in use

The module stated /var/lib/mosquitto-module and /services/mosquitto/data —
novox's layout, a path no definition may carry (ADR 0112). State, grants and
data are now placed directories (${dir:state}, ${dir:grants}, ${dir:data}),
the admin secret lives beside the broker account under the mesh's own state,
and the receives/grants maps follow the grants directory. Paths inside the
sidecar are its own view and are unchanged.

Image pinned to the 2.1.2 build ace's predecessor runs (2026-09-17); the old
pin was the same version, built in June.

Found preparing ace, whose broker carries a password-file user (an IoT switch
and home-assistant). Carrying it is a data step, not a manifest one: the
migration repo has scripts/mosquitto-pwdfile-to-dynsec.py, which moves $7$
PBKDF2 entries into the dynsec store hash-for-hash (tested end to end).

modules/mosquitto/module.json

@@ -23,13 +23,13 @@
     "mqtt-topic": {}
   },
   "receives": {
-    "mqtt-topic": "/var/lib/mosquitto-module/grants/mesh.json"
+    "mqtt-topic": "${dir:grants}/mesh.json"
   },
   "grants": {
-    "mqtt-topic": "/var/lib/mosquitto-module/grants"
+    "mqtt-topic": "${dir:grants}"
   },
   "own-secrets": {
-    "admin": "/var/lib/mosquitto-module/admin.secret",
+    "admin": "/var/lib/mesh/mosquitto/admin",
     "broker": "/var/lib/mesh/mosquitto/broker"
   },
   "listens": [
@@ -58,26 +58,24 @@
     {
       "id": "state",
       "type": "directory",
-      "path": "/var/lib/mosquitto-module",
-      "mode": "0700"
+      "mode": "0700",
+      "place": "."
     },
     {
-      "id": "grants-dir",
+      "id": "grants",
       "type": "directory",
-      "path": "/var/lib/mosquitto-module/grants",
       "mode": "0700"
     },
     {
       "id": "data",
       "type": "directory",
-      "path": "/services/mosquitto/data",
       "mode": "0700",
       "owner": "1883:1883"
     },
     {
       "id": "server-conf",
       "type": "file",
-      "path": "/var/lib/mosquitto-module/mosquitto.conf",
+      "path": "${dir:state}/mosquitto.conf",
       "mode": "0600",
       "owner": "1883:1883",
       "content": "persistence true\npersistence_location /mosquitto/data\n\nlog_dest stdout\nlog_type warning\nlog_type error\nlog_type notice\n\n# Every client authenticates; identities and their per-topic ACLs are managed\n# at runtime by the dynamic security plugin, whose store the plugin itself owns.\nallow_anonymous false\nplugin /usr/lib/mosquitto_dynamic_security.so\nplugin_opt_config_file /mosquitto/data/dynamic-security.json\n\n# MQTT listener\nlistener 1883\n\n# MQTT-over-WebSockets listener\nlistener 8081\nprotocol websockets\n"
@@ -93,8 +91,8 @@
       "name": "mosquitto-bootstrap",
       "run-once": true,
       "volumes": [
-        "/services/mosquitto/data:/mosquitto/data",
-        "/var/lib/mosquitto-module/admin.secret:/run/secrets/admin:ro"
+        "${dir:data}:/mosquitto/data",
+        "/var/lib/mesh/mosquitto/admin:/run/secrets/admin:ro"
       ],
       "env": {
         "MESH_PROVISION_MQTT": "mosquitto:1883",
@@ -112,15 +110,15 @@
       "id": "server",
       "type": "container",
       "name": "mosquitto",
-      "image": "eclipse-mosquitto@sha256:6f8d8a947c506f8a2290ec65cd4bd2bc7cb4d43fb5f6271f861cb013e2ef9797",
+      "image": "eclipse-mosquitto@sha256:38c0da4f2ef84284d47b3b3eeea1cb3bdeabe81ee10caf0cd5c5ff61ee3ea408",
       "network": "mosquitto",
       "ports": [
         "1883",
         "8081"
       ],
       "volumes": [
-        "/services/mosquitto/data:/mosquitto/data",
-        "/var/lib/mosquitto-module/mosquitto.conf:/mosquitto/config/mosquitto.conf:ro"
+        "${dir:data}:/mosquitto/data",
+        "${dir:state}/mosquitto.conf:/mosquitto/config/mosquitto.conf:ro"
       ]
     },
     {
@@ -130,8 +128,8 @@
       "network": "mosquitto",
       "volumes": [
         "/var/lib/mesh/mosquitto/broker:/run/secrets/broker:ro",
-        "/var/lib/mosquitto-module/grants:/var/lib/mosquitto-module/grants:ro",
-        "/var/lib/mosquitto-module/admin.secret:/run/secrets/admin:ro"
+        "${dir:grants}:/var/lib/mosquitto-module/grants:ro",
+        "/var/lib/mesh/mosquitto/admin:/run/secrets/admin:ro"
       ],
       "env": {
         "MESH_BROKER_FILE": "/run/secrets/broker",