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/mcp/server.rs

@@ -1,5 +1,5 @@
 use anyhow::Result;
-use log::{debug, warn};
+use log::debug;
 use serde_json::Value;
 
 use crate::modes::server::common::AppState;