fix(docker-dev): mem_limit 1g->2g (1g OOM-killed central nodes under materialise load)

docker-dev/docker-compose.yml

@@ -123,14 +123,16 @@ services:
     image: otopcua-host:dev
     # Per-node memory bounds. The full single-mesh stack (6 host nodes) OOM-killed
     # central-1 on a loaded host. Each host node measured ~357 MiB idle-solo and
-    # climbs under the full mesh + deploy/UI load, so cap at 1g (≈peak + headroom)
-    # with a 512m reservation. These top-level keys are inherited by every service
-    # that uses `<<: *otopcua-host` (YAML merge keeps the anchor's scalar keys; only
-    # the `environment` block is re-declared per service). Compose v2 honors
-    # `mem_limit`/`mem_reservation`. The full mesh needs ~6g of Docker Desktop VM
-    # memory — on a constrained host raise the VM memory or run fewer host services.
-    mem_limit: 1g
-    mem_reservation: 512m
+    # climbs sharply under deploy/materialise load: a node materialising its full
+    # cluster slice (e.g. central → MAIN's galaxy mirror + UNS overlay, ~1400 OPC UA
+    # nodes) peaks well above 1g during a deploy — a 1g cap OOM-kills it (exit 137).
+    # Cap at 2g (≈peak + headroom) with a 1g reservation. These top-level keys are
+    # inherited by every service that uses `<<: *otopcua-host` (YAML merge keeps the
+    # anchor's scalar keys; only the `environment` block is re-declared per service).
+    # The full 6-node mesh needs ~12g of Docker Desktop VM memory — on a constrained
+    # host raise the VM memory or run fewer host services.
+    mem_limit: 2g
+    mem_reservation: 1g
     depends_on:
       sql: { condition: service_healthy }
       migrator: { condition: service_completed_successfully }