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>

.gitea/workflows/deploy-nomad.yaml

@@ -1,5 +1,5 @@
 # ABOUTME: Reusable workflow for building Nix Docker images and deploying to Nomad.
-# ABOUTME: Called by service repos with: uses: ppetru/alo-cluster/.gitea/workflows/deploy-nomad.yaml@master
+# ABOUTME: Called by service repos with: uses: alo/alo-cluster/.gitea/workflows/deploy-nomad.yaml@master
 
 name: Deploy to Nomad
 
@@ -41,12 +41,12 @@ jobs:
 
       - name: Push to registry
         run: |
-          echo "Pushing to ${{ inputs.registry }}/ppetru/${{ inputs.service_name }}:latest..."
+          echo "Pushing to ${{ inputs.registry }}/alo/${{ inputs.service_name }}:latest..."
           skopeo copy \
             --dest-creds "${{ secrets.REGISTRY_USERNAME }}:${{ secrets.REGISTRY_PASSWORD }}" \
             --insecure-policy \
             docker-archive:result \
-            "docker://${{ inputs.registry }}/ppetru/${{ inputs.service_name }}:latest"
+            "docker://${{ inputs.registry }}/alo/${{ inputs.service_name }}:latest"
 
       - name: Deploy to Nomad
         env: