feat(glauth): merged shared dev GLAuth directory + compose + runbook (10.100.0.35)

Phase 0 of the shared-GLAuth standardization. config.toml = merged dc=zb,dc=local
directory (15 groups in partitioned 55xx/56xx/57xx families, 14 users incl.
multi-role spanning all groups, serviceaccount search account). compose runs one
glauth/glauth:latest on :3893. README is the deploy/verify runbook. Code-reviewed;
fixed scp -r idempotency in the deploy command (README + plan Task 4).

infra/glauth/docker-compose.yml

@@ -0,0 +1,15 @@
+# Shared dev GLAuth for OtOpcUa + MxAccessGateway + ScadaBridge.
+# Deploy on the shared Docker host 10.100.0.35:  docker compose up -d
+# Verify:  ldapsearch -x -H ldap://10.100.0.35:3893 \
+#            -D cn=serviceaccount,dc=zb,dc=local -w serviceaccount123 \
+#            -b dc=zb,dc=local "(cn=multi-role)" memberOf
+name: zb-shared-glauth
+services:
+  glauth:
+    image: glauth/glauth:latest
+    container_name: zb-shared-glauth
+    restart: unless-stopped
+    ports:
+      - "3893:3893"
+    volumes:
+      - ./config.toml:/app/config/config.cfg:ro