1Password commit signing fails

[heymage]

What happened?

Expected

A signed commit with 1Password is created, the same as with git commit on the command line or in VS Code.

Actual

The commit fails with:

Commit failed: ssh-keygen produced no signature

Steps to reproduce

Environment

• AngKorGit 0.21.1
• macOS 27.0.1
• 1Password 8.12.38 (SSH agent + Git commit signing enabled)
• git 2.54.0 (Apple Git-157)

Git config (~/.gitconfig)

[user]
    signingkey = ssh-ed25519 AAAAC3Nza...   # literal public key, as set up by 1Password
[gpg]
    format = ssh
[gpg "ssh"]
    program = /Applications/1Password.app/Contents/MacOS/op-ssh-sign
[commit]
    gpgsign = true

Steps to reproduce

1. Set up Git commit signing with 1Password, using the config above (1Password → Developer → "Sign your Git commits").
2. Open any repository in AngKorGit.
3. Stage a change and commit.
4. Approve the signing request in the 1Password prompt.

AngKorGit version

0.21.1

Operating system

macOS

Repository shape (if relevant)

No response

Screenshots / error text

In a "toast", this text is shown:
"Commit failed: ssh-keygen produced no signature"