Page Links & Mentions (Interoperability)

[LiukScot]

Summary

Enable inter-note connectivity through mentions, backlinks, and relation properties.

Tasks

• @mention a page inside the editor (custom BlockNote inline content type)
• Autocomplete dropdown when typing @ with page search
• Backlinks panel: "Pages that link to this page"
• Store links in the existing links table on save
• Auto-update links when pages are renamed or deleted
• Relation property type for databases (link rows to pages in other databases)
• Visual distinction for mentions vs regular text (chip/tag style)

Context

The links table is already defined in the schema with sourcePageId, sourceBlockId, targetPageId, and type (mention/link/relation). Just needs API routes and editor integration.