Add session-owned Pomodoro cycles and controls

Add configurable work and break intervals, pause/resume, CLI and activity-popup controls, and silent completion alerts. Use CLOCK_BOOTTIME deadlines so running timers include suspend without consuming paused time.

Refs #31

compositor/src/state/outputs.rs

@@ -103,6 +103,8 @@ impl Ferese {
             .find(|candidate| *candidate != output)
             .map(|output| output.name());
         self.activities.store.remove_output(&output.name(), fallback.as_deref());
+        self.activities
+            .pomodoro_remove_output(&output.name(), fallback.as_deref());
         self.activities.changed();
         self.display_presentation.remove_output(output);
         self.output_redraw_pending.retain(|pending| pending != output);

compositor/src/state/reconciliation.rs

@@ -168,7 +168,7 @@ impl Ferese {
         self.desktop_transition.as_mut().unwrap().publishing = true;
         let activity_output = self.space.outputs().next().map(|output| output.name());
         if let Some(output) = activity_output
-            && self.activities.store.attach_output(&output)
+            && (self.activities.store.attach_output(&output) | self.activities.pomodoro_attach_output(&output))
         {
             self.activities.changed();
         }