Update lib.rs with new module structure

src/lib.rs

@@ -1,7 +1,10 @@
-//! MoMentry Playground - 統一媒體播放與監控平台
+//! MoMentry Playground
+//! 
+//! Unified media player with ASR/YOLO/Chunks overlay support
 
 pub mod player;
-pub mod ui;
+pub mod overlay;
-pub mod viewer;
+pub mod web;
-pub mod api;
+pub mod config;
-pub mod input;
+
+pub use config::Config;