Pasted hyper.media profile URLs are not converted into hm:// links

[ion-lion]

Problem

Eric reported that pasting a hyper.media profile URL into a Seed comment/editor does not convert it into a real hm:// link/annotation.

Example URL:

https://hyper.media/hm/z6MkwRWdU6HY11Qzi9SQZrwSx3rxFw94ipYyiN7Dtbrcg2yU/:profile

Expected

When a supported https://hyper.media/hm/... profile/document URL is pasted, the editor should recognize it and convert/store it as the corresponding hm://... link/annotation.

Actual

The pasted link remains a plain external URL instead of becoming a canonical hm:// link.

Source

Reported by Eric in Seed Team Talks: https://seedteamtalks.hyper.media/discussions/:comments/z6MkgisVMELvqnsCo3dYmtVpy8PiqPGMVwfAyBWFn84vebq4/z6Ghsm9ZjYW1Ud

[ion-lion]

I reproduced the likely path and opened a fix: #584

Root cause: the paste handler only treated hm:// and the currently configured gateway URL as canonical Hypermedia links. In desktop/comment contexts where the configured gateway can be local, a public https://hyper.media/hm/.../:profile paste was linkified as an ordinary web URL and could skip HM canonicalization.

The PR makes public gateway HM URLs resolve/canonicalize locally and adds editor coverage for pasted /:profile links.