Mastodon image count limit of 4 is not handled correctly

[NickAtGit]

📜 Description

When posting to multiple channels I've seen already that some networks are handled correctly and you get a error message that the limit is 4 images.

However with Mastodon that is not the case.

Best way would be to tell the user the limits before posting and not when trying to post/schedule.

👟 Reproduction steps

Create a post with 5 images and send to Mastodon. Posting UI says success, a few moments later you get An error occurred while posting on mastodon in the notifications. Server logs show limit is 4.

👍 Expected behavior

Quick fix: do the same logic as it is already done for Bluesky or Twitter, the posting fails and a message says that 4 is the limit.

Good fix: Notify user about limits before posting

👎 Actual Behavior with Screenshots

Posting UI says success, a few moments later you get An error occurred while posting on mastodon in the notifications. Server logs show limit is 4.

💻 Operating system

Linux

🤖 Node Version

v22.20.0

📃 Provide any additional context for the Bug.

No response

👀 Have you spent some time to check if this bug has been raised before?

• I checked and didn't find similar issue

Are you willing to submit PR?

None