Misskey should display the activity sent with ActivityPub when someone create an image.
See https://github.com/tootsuite/mastodon/issues/11137
Misskey already supports it.
Create => Image adds files to the remote user's drive.
(Misskey has a feature called drive, which manages user files independently of posts.)
However, Misskey will not publish images that are not attached to the post, so it won't be visible to others.
Then you can move this to a bug issue instead of a feature issue.
Because currently, Misskey doesn't display the publication associated with the creation of an image.
I think the confusion is, some platforms, like Hubzilla, use Create --> Image for public sharing. Maybe with Create --> Image is received in an inbox, it's added to a user's public Drive that anyone can view? That way, users could publish images directly from their Drive without adding to a post.
Still broken in ver 10.102.145-m544
See https://misskey.m544.net/notes/7170163db23827bd1f33cd30
It's not a Misskey issue, as Hubzilla has only provided a link on the AP.
{
'@context': [
'https://www.w3.org/ns/activitystreams',
'https://w3id.org/security/v1',
'https://dacha.xmpp.moe/apschema/v1.8'
],
type: 'Note',
id: 'https://dacha.xmpp.moe/item/574ba361-1eed-4790-b1be-ab451e14f5b5',
published: '2020-02-05T16:45:07Z',
attributedTo: 'https://dacha.xmpp.moe/channel/caranistar',
'diaspora:guid': '574ba361-1eed-4790-b1be-ab451e14f5b5',
inReplyTo: 'https://dacha.xmpp.moe/item/025d1bc7-e335-4f58-9632-302948552387',
content: 'Mécanique : <a href="https://dacha.xmpp.moe/wiki/caranistar/Magic(20)the(20)Gathering/m(c3a9)canique(3a)R(c3a9)surgence(20)" target="_blank" rel="nofollow noopener" >Résurgence</a>',
actor: 'https://dacha.xmpp.moe/channel/caranistar',
signature: {
'@context': [
'https://www.w3.org/ns/activitystreams',
'https://w3id.org/security/v1'
],
type: 'RsaSignature2017',
nonce: '5141fa25244f6c45fb7a031b2be9f87b09fcea16db7428a99a1b4de628477c3e',
creator: 'https://dacha.xmpp.moe/channel/caranistar',
created: '2020-02-06T05:40:55Z',
signatureValue: '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'
}
}

You didn't understand.
What you're showing is a comment to the initial post which is the image sharing.
Just display the post in the initial context, and you'll see that it prooves the bug.
The initial post isn't displayed in MissKey. Only the comment.
What we expect is : both are displayed.
Please reopen this issue.
Thanks
Seem to InReplyTo tareget's post cannot be obtained, so it is impossible.
$ curl -Ss -L -i -H 'Accept: application/activity+json' https://dacha.xmpp.moe/item/025d1bc7-e335-4f58-9632-302948552387
HTTP/1.1 418 I'm a teapot
Date: Thu, 06 Feb 2020 17:45:51 GMT
Server: Apache/2.4.29 (Ubuntu)
Set-Cookie: PHPSESSID=4orjaa049smldu0rbf05rvihv8; path=/; secure; HttpOnly
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate
Pragma: no-cache
Content-Length: 0
Content-Type: text/html; charset=UTF-8
It works with 10.102.159-m544.
Thanks.