fix: resolve Args type import issues in server module

Co-authored-by: aider (openai/andrew/openrouter/qwen/qwen3-coder) <aider@aider.chat>

src/modes/server/common.rs

@@ -9,8 +9,6 @@ use std::sync::Arc;
 use std::time::Instant;
 use tokio::sync::Mutex;
 
-use crate::Args;
-
 #[derive(Debug, Clone)]
 pub struct ServerConfig {
     pub address: String,