README.md

@@ -9,6 +9,14 @@ and Neovim are thin client layers that wire up keystrokes and display
 results. The `nuwiki-ls` binary is distributed separately in the
 [nuwiki-rs](https://code.gfran.co/gffranco/nuwiki-rs) repository.
 
+> [!NOTE]
+> **This repo is the Vim/Neovim plugin (VimL + Lua) only.** The Rust LSP
+> server — parser, AST, HTML renderer, all `nuwiki-ls` source and tests —
+> lives in **[nuwiki-rs](https://code.gfran.co/gffranco/nuwiki-rs)**. The
+> plugin downloads a prebuilt `nuwiki-ls` binary from there automatically,
+> so installing this plugin needs no Rust toolchain. To work on the server,
+> head to nuwiki-rs.
+
 ## Features
 
 ### Syntax & rendering