docs: cold-start note for maintainer, simplify infra requirements

deploy-static-site/README.md

@@ -38,9 +38,16 @@ Builds a Nix flake site, uploads a tarball to S3, and deploys it via Nomad using
 
 ## Infrastructure Requirements
 
-- Nomad namespace `static-sites` must exist
-- `registry.toph.so/static-server:latest` must be pushed (see `images/flake.nix` and the `build-static-server` workflow)
 - S3 bucket (`nix-cache` by default) must exist and be writable with the supplied credentials
+- Nomad namespace `static-sites` is created automatically on first deploy
+
+## Cold-Start (maintainer note)
+
+The `static-server` image (`registry.toph.so/static-server:latest`) is built and pushed by
+the `build-static-server` workflow in this repo. It runs automatically when `deploy-static-site/images/flake.nix`
+changes, or can be triggered manually via `workflow_dispatch`.
+
+On a fresh infrastructure setup, run that workflow once before deploying any site.
 
 ## Site Flake Requirements
 

deploy-static-site/action.yaml

@@ -80,6 +80,7 @@ runs:
     - name: Deploy Nomad job
       shell: bash
       run: |
+        nomad namespace apply static-sites
         nix eval --raw --impure \
           --expr "import ${{ github.action_path }}/nomad-job.nix" \
           | nomad job run -json -