feat: improve IP blacklist import feedback

[TheMasterOfDisasters]

Summary

This PR improves feedback for imported IP blacklist files.

Previously, when an imported blacklist file could not be used, the settings page only showed the path in the danger/error style. It was not clear whether the file could not be read, was empty, or did not contain any valid blacklist entries.

With this change, the settings page now displays a short status message for the IP blacklist import.

What changed

• Added an IpBlacklistLoadStatus enum to represent blacklist loading/import state.
• Replaced the separate loading flag with the load status.
• Added status details for:
  • no blacklist file selected
  • blacklist loading
  • file read error
  • no valid IP/CIDR entries found
  • successful load with parsed entry counts
• Display the current blacklist import status in the General settings page.
• Added translations for the new status messages.
• Added tests for read errors and loading status.
• Extended existing blacklist tests to verify load status details.

Motivation

After adding CIDR support, the blacklist import became more useful with public blacklist sources, but failed imports were still difficult to understand from the UI.

For example, if a file was invalid or unreadable, users only saw an error-colored path without a clear explanation. This PR makes the blacklist import state visible so users can understand what happened and how to fix it.

Testing

Tested locally with:

cargo fmt
cargo check
cargo test ip_blacklist
cargo test
cargo build

Screenshots

No blacklist selected:

Invalid blacklist file:

Valid blacklist loaded:

[GyulyVGC]

Hey @TheMasterOfDisasters I like the idea but I prefer to keep things simple and show only a success message with the number of IPs and CIDRs.

So can you please remove the translations and all the statuses?

I'd like something just like this (not showing one of the two if it's zero):

• (IPs: 999)
• (CIDRs: 999)
• (IPs: 999, CIDRs: 999)

[TheMasterOfDisasters]

Thanks @GeorgeLS for the feedback.

I’ll move this back to draft while I simplify it and keep only the IP/CIDR counts as requested.

[TheMasterOfDisasters]

Hey @GyulyVGC, updated as requested.

I removed the translations and extra statuses, and kept only the IP/CIDR counts.

Tested:

no blacklist selected
invalid blacklist file
valid blacklist with IPs and CIDRs
valid blacklist with IPs only
valid blacklist with CIDRs only

No blacklist selected:

Invalid blacklist file:

Valid blacklist loaded:

Valid blacklist IP only :

Valid blacklist CIDR only:

[GyulyVGC]

Awesome, thanks for the quick update