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/bar.rs

@@ -54,6 +54,7 @@ impl FereseShell {
         let effects = output.and_then(|output| output.effects.as_ref());
         let compositor_material = effects.is_some();
         let availability = Availability {
+            activities: self.activity_available(id),
             media: self.media.snapshot.selected.is_some(),
             network: self.status.network.is_some(),
             audio: self.status.audio.is_some(),
@@ -340,6 +341,9 @@ impl FereseShell {
                     .into();
                 return (container(element).max_width(360).into(), !title.is_empty());
             }
+            ItemKind::Activities => {
+                return self.view_activity_item(id, item, representation, selected, width, control_height);
+            }
             ItemKind::Media => self.view_media_item(representation, selected, width),
             ItemKind::QuickSettings => self.view_status_item(status_ui::Menu::System, false, selected),
             ItemKind::Network => self.view_status_item(status_ui::Menu::Network, false, selected),