Reusable workflow renamed to publish.yaml

The analyze.yml reusable workflow has been renamed to publish.yaml — a name that better reflects its full scope: analyze, build, and deploy to Pages. This change comes before the v1 tag, which matters because the file path becomes part of the public API once tagged and consumers start pinning to it. The install snippet now reads as the shorter, more descriptive .github/workflows/publish.yaml@v1, replacing the previous "analyze" naming that only captured the first step. Two references were updated: the internal self-deploy.yml that calls the workflow, and the README install example.