Editor integrations

[net]

Editor integrations like Claude Code's VS Code extension or claudecode.nvim show diffs in the user's editor and sync context between the editor and agent.

I'm sure this is on the roadmap for opencode, but I couldn't find an existing issue so opening this as a feature request just to track it.

I don't think opencode ever needs to live inside say, neovim, but it would be nice if it could see what you have open and selected in neovim, and if it could display diffs in neovim.