What they did
u/SeniorMatthew, a C# game programmer, was fed up with DaVinci Resolve on Linux: a hard install, no h264, h265 or AAC in the free version, and poor speed on anything but NVIDIA. On a Claude Max plan they had Claude write Kinoklip, an open-source C++ video editor that copies Resolve's layout on purpose. Claude wrote every line of code; the poster only drew the icons. All seven of Resolve's pages were built, and every change has to pass a suite of more than 140 test programs before it lands. The project is GPL-3.0 and adds a single-file project mode, where dropped media is copied into the project file so it can be backed up or sent as one file.
How it went
After four days of work the poster says their own editing workflow is fully covered and the app runs at least ten times faster than Resolve on their ThinkPad with Iris Xe graphics. Only the edit page is confirmed complete. They had to find about 30 small problems in the edit tab by hand, and work paused while they waited for the weekly usage limit to reset.
Worth knowing
The post names the Claude Max plan and a high effort setting but not the harness. The speed claim is the poster's own and was not measured in the thread. Commenters asked whether it will be maintained and pointed out that Resolve's free version is strong on Windows and Mac; the poster agreed and said the project mainly helps Linux users.