fix(semaphore/collections): set collections dir owner to semaphore container uid (1001)

Host dir was owned by root (0755), blocking writes from uid=1001 inside
the container. Set owner to semaphore_container_uid=1001 so podman exec
can write collections into the bind-mount.

ansible/roles/semaphore/defaults/main.yml

@@ -83,6 +83,11 @@ semaphore_quadlet_dir: /etc/containers/systemd
 # container restarts and rebuilds.
 semaphore_collections_dir: /opt/semaphore/ansible-collections
 
+# UID of the semaphore user inside the container (uid=1001).
+# The host-side collections directory must be owned by this UID so the
+# container process can write collections into the bind-mount.
+semaphore_container_uid: 1001
+
 semaphore_ansible_collections:
   - name: containers.podman
     version: ">=1.10.0"