Bug 511986

SUMMARY
After setting up a certificate storage and when trying to sign a document, the first popup window (where you select a certificate, set reason, location etc) isn't as user-friendly as one may think. At the very top it says "select certificate to sign with". But when there is only one certificate to select, it's not quite clear that it still needs to be selected. Furthermore, when neglecting to select the certificate, instead of giving an error message stating that a certificate needs to be selected, a password entry field pops up. It is absolutely not intuitive that you messed up something in the previous dialog. My guess is that this password field is for the case that the user password protected e.g. the Thunderbird certificate storage.

So what I'm proposing is that the first dialog is being revamped in a way that makes it more intuitive that something needs to be selected, even when there is only one certificate to choose from. I think a tick box in front of the certificate should make that more clear. Also, if my guess concerning the password field is right, there should be a button in the first dialog with something like "unlock certificate storage" on it.

STEPS TO REPRODUCE
1. set up a certificate storage in Okular
2. select tools -> digitally sign...


OBSERVED RESULT
The dialog popping up is everything but intuitive and there is no good guide (with images) explaining how to handle it.

EXPECTED RESULT
An intuitive workflow to sign a document.

SOFTWARE/OS VERSIONS
Windows: -
macOS: - 
(available in the Info Center app, or by running `kinfo` in a terminal window)
Okular: 25.04.2
KDE Frameworks: 6.18.0
Qt: Using 6.9.2 and built against 6.9.2
Debian GNU/Linux forky/sid (Wayland)
Build ABI: x86_64-little_endian-lp64
Kernel: linux 6.12.48+deb13-amd64


ADDITIONAL INFORMATION
-