Protobuf has LSP support. You're welcome

Buf has released the first production-grade Language Server Protocol (LSP) server for Protobuf, bringing modern IDE support features like code completion, go-to-definition, and semantic highlighting to editors such as VSCode, IntelliJ, and Neovim. The LSP server is integrated into the Buf CLI and can be installed via a VSCode extension or configured manually in other editors. This marks a significant advancement for Protobuf development, as the language previously lacked the comprehensive IDE support available for other major programming languages.