jmri: add jmri_lcrr_branch var; main-street-station tracks clean-profile

ansible/roles/jmri/defaults/main.yml

@@ -18,6 +18,7 @@ jmri_profile_id: ""
 
 # LCRR git repo (set per-host in host_vars; leave blank to skip clone)
 jmri_lcrr_repo: ""
+jmri_lcrr_branch: "main"
 
 # SSH key for jmri user (for jmri-gui X11 access — set per-host in host_vars)
 jmri_ssh_authorized_key: ""

ansible/roles/jmri/tasks/main.yml

@@ -133,7 +133,7 @@
   ansible.builtin.git:
     repo: "{{ jmri_lcrr_repo }}"
     dest: "{{ jmri_home }}/LCRR"
-    version: main
+    version: "{{ jmri_lcrr_branch }}"
     accept_hostkey: true
     key_file: "{{ jmri_gitea_key }}"
     update: false