Extract the application loop from the main file

fitnesstrax/app/Cargo.toml

@@ -7,7 +7,7 @@ edition = "2021"
 
 [dependencies]
 adw             = { version = "0.5", package = "libadwaita", features = [ "v1_2" ] }
-async-channel   = { version = "2.1" }
+async-channel = "2.1.1"
 emseries        = { path = "../../emseries" }
 ft-core         = { path = "../core" }
 gio             = { version = "0.18" }

fitnesstrax/app/src/main.rs

@@ -89,6 +89,7 @@ fn main() {
             let _ = app_tx.send(app::AppInvocation::RequestRecords).await;
 
             while let Ok(response) = ui_rx.recv().await {
+                println!("response received: {:?}", response);
                 window.process_response(response);
             }
         });