refactor: Remove workflow-related commands and overlays from the application

src/app/state/misc.rs

@@ -87,8 +87,7 @@ const COMMANDS: &[&str] = &[
     "/model",
     "/model ls",
     "/model add",
-    "/workflow",
-    "/workflow run",
+
     "/todo",
     "/usage",
     "/compact",

src/app/state/types.rs

@@ -50,7 +50,6 @@ pub enum Overlay {
     Settings,
     Bash,
     QuitConfirm,
-    Workflow,
 
     KeyInput,
     Editor,