Connect linkblogs to existing publications

[disnet]

Summary

• Connect linkblogs to existing user-owned standard.site publications with format-aware document publishing.
• Keep externally managed publication records read-only and migrate follower scopes durably across rapid publication switches.
• Merge old and connected publication scopes on public linkblogs, with page, permalink, and RSS metadata loaded from the resolved connected publication.

Checks

• backend: type/format checks passed; focused linkblog tests passed (22/22).
• frontend: checks passed with 0 errors and 25 existing warnings.
• linkblog-site: checks passed with 0 errors and 0 warnings.

Radial artifact