Are you telling me Claude code or something couldn't do this easily too?

Claude code is... 1. Not available on my phone in a friendly form (I know there's claude web) 2. Doesn't format its answers with cited links to where what I need is found in the document 3. Doesn't have a quick, easy interface where I can upload multiple resources to a single index. You have chats but it's formatted where you're meant to have a conversation. NotebookLM is centered around "chat about these resources".