API and Web UI changes:

* Web Client 2.14.0
* Web Client 2.13.3
* Web Client 2.13.2
* Web Client 2.12.2

Changed:

* Change the license to GPLv3
* Allow the operating system to choose the default listening ports instead of assigning random ones
* Improve chat link detection and parsing
* Let the operating system choose the correct file explorer when using “Open folder” (#461)
* Add timestamps in the CDM debug frame
* Lower the default minimum search interval
* Lower the auto reconnect delay on severe flood
* Idle (finished) download connections can now be forced
* Show spam rate when receiving CTM/search/incoming connection flood
* Improve parsing of relative config paths in dcppboot.xml
* Parse HBRI validation addresses received from the hub with the correct IP protocol
* Dupe detection is now more accurate
* Internal: rewrite build system to use CMake, use vcpkg for third-party libraries, new scripts for localizations
* Support all string field types for extension settings, add a multiline text field
* Node.js updated to version 22.19.0

Fixed:

* Show a proper error message for unclean TLS connection closures
* Fix an error when loading previously opened own filelist on startup
* Fix possible issues with duplicate CIDs being generated for different clients
* Ensure that the hub column stays up-to-date for transfer
* Don’t attempt to start filelist downloads via an incorrect hub when the user comes online
* Various filelist-related bug and crash fixes
* Fix an incorrect error message when removing NAT-PMP port mappings
* Add/remove port mappings when the auto detection mode is enabled/disabled
* Fix the “engname” country format param (#88)
* Avoid unneeded list filter iterations (#120)
* Don’t incorrectly announce bundles to be shared if nothing was added
* Fix a possible incorrect “User offline” error for transfers
* Prevent adding duplicate search extensions for search types, fix adding of extensions separated with ; (#148)
* Ensure that no duplicate search results are being sent
* Detect all auto speed limits correctly from the limiter values
* Fix a possible memory leak in the MiniUPnPc mapper (DC++)
* Other misc stability fixes

Removed:

* Partial file sharing is no longer supported in NMDC hubs
* Support for loading of legacy XML settings for web server (the new format was added in AirDC++ 4.10)