I was saying almost this same thing to a coworker. I'm building something that's like Emacs, but for agents, and it's mostly a Markdown-forward tool for managing all the agents and agent coding harnesses, and it's a vendor-agnostic things....If anything it's like a newer, faster, fancier org-mode, but knows how to inject all the right context into all the agentic projects.
This, after configuring Emacs to talk to LLMs. But that's not the right angle now for me....