chore: rustfmt, clippy lints and code tidying

stub/src/main.rs

@@ -1,6 +1,6 @@
-use std::sync::Arc;
 use clap::Parser;
 use futures_util::{SinkExt, StreamExt};
+use std::sync::Arc;
 use tokio::io::AsyncBufReadExt;
 use tokio::sync::mpsc;
 
@@ -23,11 +23,11 @@ async fn read_mcp_message(stdin: &mut tokio::io::BufReader<tokio::io::Stdin>) ->
             return None;
         }
         tracing::info!("Read {} bytes from stdin: {:?}", bytes_read, line);
-        
+
         if line.starts_with('{') {
             return Some(line.trim_end().to_string());
         }
-        
+
         let line = line.trim_end();
         if line.is_empty() {
             break;
@@ -51,16 +51,16 @@ fn init_logging(app_name: &str) -> Option<tracing_appender::non_blocking::Worker
     let mut base_dir = dirs::home_dir().unwrap_or_else(|| std::path::PathBuf::from("."));
     base_dir.push(".gemini/mcp_memory/logs");
     std::fs::create_dir_all(&base_dir).unwrap_or_default();
-    
+
     let file_appender = tracing_appender::rolling::daily(base_dir, format!("{}.log", app_name));
     let (non_blocking, guard) = tracing_appender::non_blocking(file_appender);
-    
+
     let _ = tracing_subscriber::fmt()
         .with_writer(non_blocking)
         .with_ansi(false)
         .with_max_level(tracing::Level::TRACE)
         .try_init();
-    
+
     Some(guard)
 }
 
@@ -94,7 +94,7 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
             tracing::info!("Attempting to connect to {}", ws_url);
             
             use tokio_tungstenite::tungstenite::client::IntoClientRequest;
-            let mut request = match ws_url.clone().into_client_request() {
+            let request = match ws_url.clone().into_client_request() {
                 Ok(req) => req,
                 Err(e) => {
                     tracing::error!("Failed to parse target URL {}: {}", ws_url, e);
@@ -165,5 +165,3 @@ fn main() -> Result<(), Box<dyn std::error::Error>> {
         Ok(())
     })
 }
-
-