Migrate to alo organization

Update all registry paths from ppetru/* to alo/* and workflow
references from ppetru/alo-cluster to alo/alo-cluster.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

services/farmos.hcl

@@ -16,7 +16,7 @@ job "farmos" {
       driver = "docker"
 
       config {
-        image = "gitea.v.paler.net/ppetru/farmos:latest"
+        image = "gitea.v.paler.net/alo/farmos:latest"
         ports = ["http"]
         volumes = [
           "/data/services/farmos/sites:/opt/drupal/web/sites",