fix: resolve borrow and move errors and remove unused imports

Co-authored-by: aider (openai/andrew/openrouter/deepseek/deepseek-chat-v3.1) <aider@aider.chat>

src/modes/server/api/mcp.rs

@@ -7,7 +7,6 @@ use futures::stream::{self, Stream};
 use log::{debug, info};
 use std::convert::Infallible;
 use std::time::Duration;
-use tokio_stream::StreamExt as _;
 
 use crate::modes::server::common::AppState;
 use crate::modes::server::mcp::KeepMcpServer;