Add Live Activities as configurable bar items (#30)

* Add Live Activities as configurable bar items

* Fix activity owner monitoring and Morph list interactions

* Keep activity rows stable during updates and tighten their layout

* Use subtle theme tint for activity cards

* Tighten activity title and progress spacing

* Use theme accent for active progress rings

* Fit compact activities to measured titles and badge

* Expose Live Activities display controls in Settings

* Open activity terminals and streamline the Morph header

* Give Morph continuous icons and prioritize workspace navigation

* Show activity progress inside its ring

* Inset activity progress rings and strengthen their stroke

* Fix activity lifecycle, command output handling and list navigation

* Reduce activity update work and harden publisher lifetimes

* Set up Live Activities for the detected user shell during installation

* Document Activities setup, daily use and troubleshooting

* Preserve Morph idle width across empty activity updates

* Fix dimming flicker, hide inactive music tab and consolidate Activities docs

* Fix panel clearance across styles and match previews to theme settings

* Prevent panel blur from repainting neighboring islands

---------

Co-authored-by: Samuel Onoja <[email protected]>

shell/ferese-shell/src/panel_hub/workspaces.rs

@@ -135,7 +135,7 @@ impl FereseShell {
         )
     }
 
-    pub(super) fn hub_workspace_width(&self, id: window::Id) -> f64 {
+    pub(crate) fn hub_workspace_width(&self, id: window::Id) -> f64 {
         f64::from(self.hub_workspace_selection(id).width())
     }
 
@@ -257,7 +257,7 @@ impl FereseShell {
         self.dismiss_workspace_tooltip_for_bar(id)
     }
 
-    pub(super) fn hub_workspaces(&self, id: window::Id, opacity: f32) -> Element<'_, cosmic::Action<Message>> {
+    pub(crate) fn hub_workspaces(&self, id: window::Id, opacity: f32) -> Element<'_, cosmic::Action<Message>> {
         let selection = self.hub_workspace_selection(id);
         let width = selection.width();
         let output = self.output_for_bar(id);