Add support for persistent storage of panel layouts, sizes, and active tabs (#4017)

* Add persistence to panel layouts

* Fix and persist the Window > Focus Document mode

* Add a Window > Reset Workspace action

* workspace_layout.json -> workspace_layout.ron

* Fix native app hole punch

* Cleanup review pass

desktop/wrapper/src/handle_desktop_wrapper_message.rs

@@ -75,6 +75,15 @@ pub(super) fn handle_desktop_wrapper_message(dispatcher: &mut DesktopWrapperMess
 			let message = PreferencesMessage::Load { preferences };
 			dispatcher.queue_editor_message(message);
 		}
+		DesktopWrapperMessage::LoadWorkspaceLayout { workspace_layout } => match ron::from_str(&workspace_layout) {
+			Ok(layout) => {
+				let message = PortfolioMessage::LoadWorkspaceLayout { layout };
+				dispatcher.queue_editor_message(message);
+			}
+			Err(e) => {
+				tracing::error!("Failed to deserialize workspace layout: {e}");
+			}
+		},
 		#[cfg(target_os = "macos")]
 		DesktopWrapperMessage::MenuEvent { id } => {
 			if let Some(message) = crate::utils::menu::parse_item_path(id) {

desktop/wrapper/src/intercept_frontend_message.rs

@@ -110,6 +110,16 @@ pub(super) fn intercept_frontend_message(dispatcher: &mut DesktopWrapperMessageD
 		FrontendMessage::TriggerLoadPreferences => {
 			dispatcher.respond(DesktopFrontendMessage::PersistenceLoadPreferences);
 		}
+		FrontendMessage::TriggerSaveWorkspaceLayout { workspace_layout } => {
+			let Ok(workspace_layout) = ron::ser::to_string_pretty(&workspace_layout, ron::ser::PrettyConfig::default()) else {
+				tracing::error!("Failed to serialize workspace layout");
+				return None;
+			};
+			dispatcher.respond(DesktopFrontendMessage::PersistenceWriteWorkspaceLayout { workspace_layout });
+		}
+		FrontendMessage::TriggerLoadWorkspaceLayout => {
+			dispatcher.respond(DesktopFrontendMessage::PersistenceLoadWorkspaceLayout);
+		}
 		#[cfg(target_os = "macos")]
 		FrontendMessage::UpdateLayout {
 			layout_target: LayoutTarget::MenuBar,

desktop/wrapper/src/messages.rs

@@ -58,6 +58,10 @@ pub enum DesktopFrontendMessage {
 		preferences: Preferences,
 	},
 	PersistenceLoadPreferences,
+	PersistenceWriteWorkspaceLayout {
+		workspace_layout: String,
+	},
+	PersistenceLoadWorkspaceLayout,
 	UpdateMenu {
 		entries: Vec<MenuItem>,
 	},
@@ -117,6 +121,9 @@ pub enum DesktopWrapperMessage {
 	LoadPreferences {
 		preferences: Preferences,
 	},
+	LoadWorkspaceLayout {
+		workspace_layout: String,
+	},
 	MenuEvent {
 		id: String,
 	},