ui enhacements and next-gen input item code (not implented)

src/background/run.ts

@@ -13,7 +13,7 @@ export async function main() {
 
     // create main window.
     await createWindow({
-        width: 350,
+        width: 600,
         height: 500,
         resizable: true
     });

src/background/session.ts

@@ -9,11 +9,8 @@ interface RenderMessage {
         text: string;
         audio: boolean | Buffer;
     };
-    avatar: string;
     context: string;
-    subContext: string;
     modifier: string;
-    time: string;
     id: string;
 }