chore: rebrand farhoodliquor → farhoodlabs, API-only mode, split infra

- Rename org references from farhoodliquor to farhoodlabs in CI workflows
  and GHCR image tags
- Rewrite README for Hightower as API-driven K8s fork of Shannon
- Update CLAUDE.md to reflect API-only deployment model
- Delete docker-compose files (K8s only, no Docker Compose support)
- Delete shannon CLI entry point (API-only going forward)
- Move K8s manifests to farhoodlabs/hightower-infra

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

.github/workflows/rollback-beta.yml

@@ -18,7 +18,7 @@ concurrency:
 jobs:
   rollback:
     name: Roll back npm beta dist-tag
-    runs-on: runners-farhoodliquor
+    runs-on: runners-farhoodlabs
     steps:
       - name: Validate target version
         id: target