I often use CMD+K in Slack/Spotify to open search. And for sure CMD+Space in OSX finder.
I know Figma has CMD+/ to search the local file.
What if that index was broadened to all files?
Ex: I want to quickly open a command panel and type the name of the file. On enter, open. If it’s currently open, change tabs. If it’s not open, open in new tab.