sys-ctl-rpr-docker-soft: switch to STRICT label mode and adapt tests

- script.py now resolves docker-compose project and working_dir strictly from container labels
- removed container-name fallback logic
- adjusted sys-ctl-hlth-docker-container to include sys-ctl-rpr-docker-soft
- cleaned up sys-svc-docker dependencies
- updated unit tests to mock docker inspect and os.path.isfile for STRICT mode

Conversation: https://chatgpt.com/share/68b80927-b800-800f-a909-0fe8d110fd0e

roles/sys-ctl-hlth-docker-volumes/tasks/01_core.yml

@@ -2,7 +2,7 @@
   include_role:
     name: sys-ctl-alm-compose
   when: run_once_sys_ctl_alm_compose is not defined
-  
+
 - include_role:
     name: sys-service
   vars: