What:
- bound CLAWDINATOR image artifact retention with S3 lifecycle, AMI pruning, and import provenance tags
- reduce the AWS fleet to Babelfish-only and make GitHub credentials opt-in per host
- disable the AMI build, nix-openclaw bump, and release workflows by moving them out of .github/workflows/
- update operator docs for the new explicit build and deploy model
Why:
- stop unbounded S3 and snapshot growth from image builds
- remove unattended resurrection paths and shut down the unused t3.large instances
- keep the remaining Babelfish host running without GitHub App credentials or sync timers
Tests:
- `nix shell nixpkgs#shellcheck nixpkgs#shfmt -c bash scripts/lint-shell.sh` (pass)
- `nix build .#nixosConfigurations.clawdinator-babelfish.config.system.build.toplevel .#nixosConfigurations.clawdinator-1.config.system.build.toplevel .#nixosConfigurations.clawdinator-2.config.system.build.toplevel` (pass)
- `AWS_PROFILE=homelab-admin TF_VAR_aws_region=eu-central-1 TF_VAR_ami_id=ami-0a9abe17feeee0079 TF_VAR_ssh_public_key="$(cat ~/.ssh/id_ed25519.pub)" nix shell nixpkgs#opentofu -c sh -lc 'tofu fmt -check && tofu validate'` (pass)
- live AWS apply: destroyed `clawdinator-1` and `clawdinator-2`, replaced Babelfish, and verified only `Fleet Deploy` remains active in GitHub Actions
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