Intraref pages (Link pages between different books)

Summary

Introduce the ability to link to pages that belong to a different book. This feature would allow users to reference existing pages across books while ensuring updates are synchronized and editing is restricted on the linked reference.

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Frontend Requirements

1. Advanced Page Creation Form:
   • Secondary or context menu click on the "Create Page" button should provide an option to open an advanced page creation form.
   • This form should include:
     • An option to create a page as a link from an existing page in another book.
     • A field for selecting or searching the source page to link to.
2. Editing Restrictions:
   • Linked pages should display content from the source page
   • Users should not be allowed to edit the content of the linked page.
3. Dynamic Updates:
   • Content updates made to the original page in the source book should automatically propagate to all linked references.

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Backend Requirements

1. Database:
   • Introduce a join column to manage the relationship between linked pages and their source pages.
2. Syncing Mechanism:
   • Implement a process to ensure that changes to the original page are reflected in the linked references in real time.
3. Editing Restrictions:
   • Add backend safeguards to enforce read-only behavior on linked pages.
   • Remark: I opted against safeguards for inserting new snips on reference pages as having annotations on a linked page could be useful in the future. Editing tools will not be shown on the frontend for now which kinda enforces the same behavior.