Function lsp_server_log_name 

pub fn lsp_server_log_name(instance: &InstanceKey) -> String

Build the synthetic name for the per-instance LSP log buffer owned by crate::modes::LspServerLogMode.

Format: *lsp:<server_id>:<workspace_path>*. The workspace path is rendered via Path::display() (matches the canonical form the registry uses for buffer lookups).