- element.test.ts: an untouched value survives Source tab, tab buttons,
preview and reattach byte for byte with no summer-change
- TestBlogEditorLoad: HTML verbatim, markdown as content_html, FormatHTML
fallback, nil and empty values
- TestPostsAdminResaveKeepsHTML (Docker host): GET then PUT the served
values for an HTML and a markdown post, exact bytes, no notices, then a
clean edited save in both locales
