I use Yattee to connect to a Invidious instance.

Third party YouTube frontends will not be accepted in the App Store. Maybe with sideloading this can change.

Yeah. I think tcpdump/wireshark is the way to go.

I’ve used platformio and it works well. It can generate ‘compile_commands.json’ and clangd lsp works out of the box.

The best solution is to create an issue and attach the pictures there. You can then link in README and not bloat the repository.