feat: leverage elicitations in the MCP server

codex-rs/core/src/mcp_connection_manager.rs

@@ -18,6 +18,7 @@ use mcp_types::ClientCapabilities;
 use mcp_types::Implementation;
 use mcp_types::Tool;
 
+use serde_json::json;
 use sha1::Digest;
 use sha1::Sha1;
 use tokio::task::JoinSet;
@@ -135,7 +136,9 @@ impl McpConnectionManager {
                                 experimental: None,
                                 roots: None,
                                 sampling: None,
-                                elicitation: None,
+                                // TODO(mbolin): Research the expected structure
+                                // for this field.
+                                elicitation: Some(json!({})),
                             },
                             client_info: Implementation {
                                 name: "codex-mcp-client".to_owned(),