ci(deploy): move ghcr namespace from personal -> org

The packages should live under the org, not a personal user namespace:
  ghcr.io/mastermanas805/instant-X  ->  ghcr.io/instanode-dev/instant-X

Reason:
- 403 Forbidden on push from worker/provisioner workflows because the
  org repo's GITHUB_TOKEN can't write to a personal-namespace package
  without explicit per-package "Manage Actions access" linking.
- Personal-namespace packages are tied to an individual; org-namespace
  is the right ownership boundary for shared infra.

First successful push from this workflow will create the org package
(default visibility: private). The k8s cluster needs read access; if
pods hit ImagePullBackOff after this lands, either flip the package
visibility to public OR add an imagePullSecret pointing at the new
namespace.

The personal-namespace packages can be deleted after we verify the
org-namespace deploys are working end-to-end.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: mastermanas805

.github/workflows/deploy.yml

@@ -38,7 +38,7 @@ permissions:
   packages: write
 
 env:
-  IMAGE_REPO: ghcr.io/mastermanas805/instant-worker
+  IMAGE_REPO: ghcr.io/instanode-dev/instant-worker
   K8S_NAMESPACE: instant-infra
   K8S_DEPLOYMENT: instant-worker
   K8S_CONTAINER: worker