Hide footer on scroll down (minimal shell mode)

src/state/models/shell-ui.ts

@@ -74,6 +74,7 @@ export interface ComposerOpts {
 }
 
 export class ShellUiModel {
+  minimalShellMode = false
   isMainMenuOpen = false
   isModalActive = false
   activeModal:
@@ -91,6 +92,10 @@ export class ShellUiModel {
     makeAutoObservable(this)
   }
 
+  setMinimalShellMode(v: boolean) {
+    this.minimalShellMode = v
+  }
+
   setMainMenuOpen(v: boolean) {
     this.isMainMenuOpen = v
   }