fix: prevent duplicate database connection in server mode

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

src/modes/server.rs

@@ -94,23 +94,21 @@ pub fn mode_server(
     
     // We need to move the connection into the async runtime
     let rt = tokio::runtime::Runtime::new()?;
-    rt.block_on(run_server(config, conn, data_path, args))
+    // Take ownership of the connection and move it into the async runtime
+    let owned_conn = std::mem::replace(conn, rusqlite::Connection::open_in_memory()?);
+    rt.block_on(run_server(config, owned_conn, data_path, args))
 }
 
 async fn run_server(
     config: ServerConfig,
-    _conn: &mut rusqlite::Connection,
+    conn: rusqlite::Connection,
     data_dir: PathBuf,
     args: &Args,
 ) -> Result<()> {
     debug!("Starting REST HTTP server on {}", config.address);
     
-    // Create a new database connection for the server
-    // Note: This is a simplified approach. In production, you'd want a connection pool
-    let mut db_path = data_dir.clone();
-    db_path.push("keep-1.db");
-    let new_conn = crate::db::open(db_path)?;
-    let db_conn = Arc::new(Mutex::new(new_conn));
+    // Use the existing database connection
+    let db_conn = Arc::new(Mutex::new(conn));
     
     let state = AppState {
         db: db_conn,