editor: Remove insert mode and use the arrow keys to navigate, plus Ctrl+S to save

tests/run-tests.cpp

@@ -24,7 +24,13 @@ Result<int> luna_main(int argc, char** argv)
     for (const auto& program : files)
     {
         auto command = TRY(String::format("%s/%s"_sv, test_dir.chars(), program.chars()));
-        int status = system(command.chars());
+        StringView args[] = { command.view() };
+
+        auto pid = TRY(os::Process::spawn(args[0], Slice<StringView> { args, 1 }, false));
+
+        int status;
+        TRY(os::Process::wait(pid, &status));
+
         if (WEXITSTATUS(status) != 0)
         {
             os::Process::kill(1, SIGQUIT); // Tell init to report a failed test run.