v0.27.0

@samva/cli@0.27.0

Author newsletter issues and pin saved content to campaigns

The SDK adds topicIssues on the Promise client and TopicIssues at
samva/effect/topic-issues. The CLI adds samva topics issues for creating and editing Markdown
issues, checking and previewing email or web output, and saving commits. Listing issues returns
each draft's title and its latest campaign send, and needs messages read access beside contacts
read access. Issue authoring is Preview and requires access for your organization.

Campaigns accept content.issue: { path, commit } with audience.topicId to select a saved issue.
The saved title and preheader supply the email content, and each run keeps its selected path and
commit. Use the CLI's --issue-path and --issue-commit options to select that content.

Use SML 0.21 for template projects

Update your project's @samva/markup and @samva/vite packages to 0.21.0. Compiled templates use
sml: 2; direct renderer calls select output with { target: "email" } instead of
{ channel: "email" }.

Publish sent newsletter issues on the web

Publication sites are Preview and available to selected organizations. Enable an opt-in topic's
archive with archiveEnabled and choose its <publicationSlug>.samva.app hostname. Sent issues
appear in the archive, RSS feed and sitemap; saving a draft does not publish it.

The SDK adds topicPublicationDomains on the Promise client and TopicPublicationDomains at
samva/effect/publication-domains to add, inspect and remove custom publication domains. The CLI
adds --archive enabled|disabled and --publication-slug <label|none> to topic settings.

Email sent with publication Preview access includes a private view-in-browser link to that
delivery's frozen content. Compiled templates must support SML's web renderer; raw API HTML and
text are also supported.