Feature Request: Prompt interactively for SSH password when password authentication is required

[mohan-s-gopal]

When connecting to a password-authenticated SSH host imported from ~/.ssh/config, OmnySSH attempts the connection and returns:

SSH authentication failed

It does not prompt for the SSH login password.

Example ~/.ssh/config:

Host intgus1
    HostName bastion.example.com
    User myuser
    Port 22

The same host works with standard OpenSSH:

ssh intgus1

OpenSSH prompts interactively:

myuser@bastion.example.com's password:

Expected behavior

If SSH agent/key authentication fails and the server supports password authentication, OmnySSH should display an interactive password prompt, for example:

SSH password for myuser@bastion.example.com:

The password could optionally be used only for the current connection/session without requiring it to be permanently stored in hosts.toml.

Current behavior

OmnySSH tries the available SSH agent/keys and then fails with SSH authentication failed when no password has already been configured.

Suggested behavior

Authentication flow could be:

1. Try SSH agent
2. Try configured/default SSH keys
3. If password authentication is available, prompt the user for a password
4. Connect using the entered password
5. Optionally allow "Remember password" or keep it session-only

This would make password-authenticated hosts imported from ~/.ssh/config behave similarly to the standard ssh client.