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/config.rs

@@ -8,6 +8,7 @@ const DEFAULT_BACKGROUND: [u8; 3] = [11, 15, 20];
 
 #[derive(Clone, Debug)]
 pub(crate) struct ShellConfig {
+    pub(crate) activities: ferese_config::activities::Settings,
     pub(crate) notifications: ferese_config::notifications::NotificationConfig,
     pub(crate) animations: crate::motion::Settings,
     pub(crate) font_family: Option<String>,
@@ -22,6 +23,7 @@ impl Default for ShellConfig {
     fn default() -> Self {
         let status = StatusConfig::default();
         Self {
+            activities: Default::default(),
             notifications: Default::default(),
             animations: Default::default(),
             font_family: None,
@@ -183,6 +185,8 @@ pub(crate) enum WallpaperMode {
 
 #[derive(Debug, Default, Deserialize)]
 struct FereseConfig {
+    #[serde(default)]
+    activities: ferese_config::activities::Settings,
     #[serde(default)]
     panels: Option<Vec<crate::panel::Panel>>,
     #[serde(default)]
@@ -398,6 +402,7 @@ fn parse_document(
             theme.bar_radius = theme.material_radius;
 
             Ok(ShellConfig {
+                activities: config.activities,
                 notifications: config.notifications,
                 animations: config.animations,
                 font_family: config.theme.typography.font_family,