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/status_ui/bar.rs

@@ -163,6 +163,7 @@ fn status_label(kind: Menu, s: &Snapshot) -> String {
             Some(n) => format!("Notifications: {} unread", n.count),
             _ => "Notifications: unavailable".into(),
         },
+        Menu::Activities => "Activities".into(),
         Menu::Workspaces => "Workspaces".into(),
         Menu::Calendar => "Calendar".into(),
         Menu::Overflow => "More panel items".into(),
@@ -243,6 +244,7 @@ pub(super) fn status_icon(kind: Menu, s: &Snapshot) -> (&'static [u8], bool) {
             }
         }
         Menu::Workspaces => (ferese_theme::icons::OVERVIEW, true),
+        Menu::Activities => (ferese_theme::icons::FERESE, true),
         Menu::System => (ferese_theme::icons::CONTROL_CENTER, true),
     }
 }