[JacobStephens2]

Summary

Adds a helper script and ignored host-list config to run thirdshift update across a fleet of local, Lima, and SSH hosts.

 .gitignore                         # ignores /scripts/update-hosts.conf
 scripts/
+├── update-hosts.conf.example      # committed template showing local, lima:<vm>, and ssh <host> entries
+└── update-hosts.sh                # runs `thirdshift update` across configured hosts

scripts/update-hosts.sh [hosts-file]
  for each entry in scripts/update-hosts.conf:
    local           -> bash -c "$remote_cmd"
    lima[:instance] -> limactl shell <instance> bash -c "$remote_cmd"
    ssh <target>    -> ssh <target> "bash -s" <<<"$remote_cmd"
      run `thirdshift update`
      if no install receipt (e.g. aarch64-unknown-linux-gnu source install):
        update from ~/repos/thirdshift latest release tag (or `cargo install thirdshift --locked`)

Evidence

• Before: Updating each host required manually running thirdshift update on local, Lima, and each SSH target.
  After: Running scripts/update-hosts.sh updates all 7 configured hosts in one command:

  $ scripts/update-hosts.sh
  ==> local
  thirdshift: 12:41:37 thirdshift 0.18.7 is the latest release
  ==> lima:thirdshift
  no install receipt; updating from ~/repos/thirdshift...
  thirdshift: 12:41:37 thirdshift 0.18.7 is the latest release (from source)
  ==> ssh jacob@thirdshift.app
  thirdshift: 12:41:39 thirdshift 0.18.7 is the latest release
  ==> ssh jacob@stephens.page
  thirdshift: 12:41:40 thirdshift 0.18.7 is the latest release
  ==> ssh jstephens@test
  thirdshift: 12:41:44 thirdshift 0.18.7 is the latest release
  ==> ssh jstephens@orchestrate
  thirdshift: 12:41:45 thirdshift 0.18.7 is the latest release
  ==> ssh jstephens@dev
  thirdshift: 12:41:51 thirdshift 0.18.7 is the latest release
  

Merge Danger

Door: two-way

Standalone developer utility script in scripts/ and .gitignore entry; does not touch src/ or runtime behavior.

Blast Radius: Low

Only affects manual invocations of scripts/update-hosts.sh.