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/beancount.hcl

@@ -19,7 +19,7 @@ job "beancount" {
       user = "1000"
 
       config {
-        image = "gitea.v.paler.net/ppetru/fava:latest"
+        image = "gitea.v.paler.net/alo/fava:latest"
         ports = ["http"]
         volumes = [
           "/data/services/beancount:/beancount",