Chapbook-style links don't show arrows linking passages in the editor

[jtheory]

Describe the bug I used the Link -> Passage Link function to add new links in the editor, and that created links like this: {link to: 'Passage name', label: 'Label text'} ...which works when testing the story, but aren't supported otherwise in the editor (no arrows between passages, no autocomplete for passage name, no auto-creation of new passages).

I went hunting through the docs, found the [[Passage name<-Label text]] format, and that works fully.

What's the direction here? I've hunted through issues but not found any discussion, and the docs don't talk about a custom Chapbook style anywhere that I could find.

To Reproduce

• Use the editor menu to insert a link in a Chapbook story; no editor support
• Also manually enter a standard [[]] type link, after some confusion & searching docs
• Notice that many link features only work with the manually-entered classic link style

Expected behavior Two good options for consistency across docs & the editor:

• full support in the editor for Chapbook-style links, and updated docs
• insert classic links in the editor (maybe just until there's full support for Chapbook links)

Stories and screenshots Here's an example -- there are two links from "Realization", to Call friend and Processing done, but only the classic style one shows the arrow.

Environment Twine version 2.8.1 (89) in Ubuntu via Snap.