implements PLN-0060 focused window ownership API

crates/console/prometeu-system/src/os/facades/window.rs

@@ -1,4 +1,5 @@
 use crate::os::SystemOS;
+use crate::task::TaskId;
 use crate::windows::{Window, WindowId, WindowOwner};
 use prometeu_hal::color::Color;
 use prometeu_hal::primitives::Rect;
@@ -26,6 +27,10 @@ impl<'a> WindowFacade<'a> {
         self.os.window_manager.focused
     }
 
+    pub fn focused_window_belongs_to_task(&self, task_id: TaskId) -> bool {
+        self.os.window_manager.focused_window_belongs_to_task(task_id)
+    }
+
     pub fn close_window(&mut self, id: WindowId) {
         self.os.window_manager.remove_window(id);
     }

crates/console/prometeu-system/src/services/windows/window_manager.rs

@@ -1,4 +1,5 @@
 use crate::services::windows::window::{Window, WindowId};
+use crate::task::TaskId;
 use crate::windows::WindowOwner;
 use prometeu_hal::color::Color;
 use prometeu_hal::primitives::Rect;
@@ -51,6 +52,17 @@ impl WindowManager {
             window.has_focus = window.id == id;
         }
     }
+
+    pub fn focused_window_belongs_to_task(&self, task_id: TaskId) -> bool {
+        let Some(focused_id) = self.focused else {
+            return false;
+        };
+
+        self.windows
+            .iter()
+            .find(|window| window.id == focused_id)
+            .is_some_and(|window| window.owner == WindowOwner::Task(task_id))
+    }
 }
 
 #[cfg(test)]
@@ -103,4 +115,91 @@ mod tests {
         assert_eq!(wm.windows.len(), 0);
         assert_eq!(wm.focused, None);
     }
+
+    #[test]
+    fn focused_window_belongs_to_task_returns_false_without_focus() {
+        let mut wm = WindowManager::new();
+        wm.add_window(
+            "Task Window".to_string(),
+            WindowOwner::Task(crate::task::TaskId(1)),
+            Rect { x: 0, y: 0, w: 10, h: 10 },
+            Color::WHITE,
+        );
+
+        assert!(!wm.focused_window_belongs_to_task(crate::task::TaskId(1)));
+    }
+
+    #[test]
+    fn focused_window_belongs_to_task_matches_focused_task_owner() {
+        let mut wm = WindowManager::new();
+        let id = wm.add_window(
+            "Task Window".to_string(),
+            WindowOwner::Task(crate::task::TaskId(1)),
+            Rect { x: 0, y: 0, w: 10, h: 10 },
+            Color::WHITE,
+        );
+
+        wm.set_focus(id);
+
+        assert!(wm.focused_window_belongs_to_task(crate::task::TaskId(1)));
+    }
+
+    #[test]
+    fn focused_window_belongs_to_task_rejects_other_task_owner() {
+        let mut wm = WindowManager::new();
+        let id = wm.add_window(
+            "Task Window".to_string(),
+            WindowOwner::Task(crate::task::TaskId(2)),
+            Rect { x: 0, y: 0, w: 10, h: 10 },
+            Color::WHITE,
+        );
+
+        wm.set_focus(id);
+
+        assert!(!wm.focused_window_belongs_to_task(crate::task::TaskId(1)));
+    }
+
+    #[test]
+    fn focused_window_belongs_to_task_rejects_hub_owner() {
+        let mut wm = WindowManager::new();
+        let id = wm.add_window(
+            "Hub Window".to_string(),
+            WindowOwner::Hub,
+            Rect { x: 0, y: 0, w: 10, h: 10 },
+            Color::WHITE,
+        );
+
+        wm.set_focus(id);
+
+        assert!(!wm.focused_window_belongs_to_task(crate::task::TaskId(1)));
+    }
+
+    #[test]
+    fn focused_window_belongs_to_task_rejects_overlay_owner() {
+        let mut wm = WindowManager::new();
+        let id = wm.add_window(
+            "Overlay Window".to_string(),
+            WindowOwner::Overlay,
+            Rect { x: 0, y: 0, w: 10, h: 10 },
+            Color::WHITE,
+        );
+
+        wm.set_focus(id);
+
+        assert!(!wm.focused_window_belongs_to_task(crate::task::TaskId(1)));
+    }
+
+    #[test]
+    fn focused_window_belongs_to_task_rejects_stale_focus() {
+        let mut wm = WindowManager::new();
+        wm.add_window(
+            "Task Window".to_string(),
+            WindowOwner::Task(crate::task::TaskId(1)),
+            Rect { x: 0, y: 0, w: 10, h: 10 },
+            Color::WHITE,
+        );
+        wm.focused = Some(WindowId(999));
+
+        assert!(!wm.focused_window_belongs_to_task(crate::task::TaskId(1)));
+    }
 }

discussion/index.ndjson

@@ -1,5 +1,5 @@
 {"type":"meta","next_id":{"DSC":36,"AGD":36,"DEC":28,"PLN":62,"LSN":44,"CLSN":1}}
-{"type":"discussion","id":"DSC-0035","status":"in_progress","ticket":"task-owned-shell-windows","title":"Agenda - Task-Owned Shell Windows","created_at":"2026-05-15","updated_at":"2026-05-15","tags":["runtime","os","task","window-manager","shell","lifecycle"],"agendas":[{"id":"AGD-0035","file":"AGD-0035-agenda-task-owned-shell-windows.md","status":"accepted","created_at":"2026-05-15","updated_at":"2026-05-15"}],"decisions":[{"id":"DEC-0027","file":"DEC-0027-decision-task-owned-shell-windows.md","status":"accepted","created_at":"2026-05-15","updated_at":"2026-05-15","ref_agenda":"AGD-0035"}],"plans":[{"id":"PLN-0059","file":"PLN-0059-plan-task-window-contract-specs.md","status":"done","created_at":"2026-05-15","updated_at":"2026-05-15","ref_decisions":["DEC-0027"]},{"id":"PLN-0060","file":"PLN-0060-plan-focused-window-ownership-api.md","status":"open","created_at":"2026-05-15","updated_at":"2026-05-15","ref_decisions":["DEC-0027"]},{"id":"PLN-0061","file":"PLN-0061-plan-shell-running-lifecycle-integration.md","status":"open","created_at":"2026-05-15","updated_at":"2026-05-15","ref_decisions":["DEC-0027"]}],"lessons":[]}
+{"type":"discussion","id":"DSC-0035","status":"in_progress","ticket":"task-owned-shell-windows","title":"Agenda - Task-Owned Shell Windows","created_at":"2026-05-15","updated_at":"2026-05-15","tags":["runtime","os","task","window-manager","shell","lifecycle"],"agendas":[{"id":"AGD-0035","file":"AGD-0035-agenda-task-owned-shell-windows.md","status":"accepted","created_at":"2026-05-15","updated_at":"2026-05-15"}],"decisions":[{"id":"DEC-0027","file":"DEC-0027-decision-task-owned-shell-windows.md","status":"accepted","created_at":"2026-05-15","updated_at":"2026-05-15","ref_agenda":"AGD-0035"}],"plans":[{"id":"PLN-0059","file":"PLN-0059-plan-task-window-contract-specs.md","status":"done","created_at":"2026-05-15","updated_at":"2026-05-15","ref_decisions":["DEC-0027"]},{"id":"PLN-0060","file":"PLN-0060-plan-focused-window-ownership-api.md","status":"done","created_at":"2026-05-15","updated_at":"2026-05-15","ref_decisions":["DEC-0027"]},{"id":"PLN-0061","file":"PLN-0061-plan-shell-running-lifecycle-integration.md","status":"open","created_at":"2026-05-15","updated_at":"2026-05-15","ref_decisions":["DEC-0027"]}],"lessons":[]}
 {"type":"discussion","id":"DSC-0034","status":"done","ticket":"system-os-domain-facades","title":"Agenda - SystemOS Domain Facades","created_at":"2026-05-15","updated_at":"2026-05-15","tags":["runtime","os","services","api-surface","lifecycle","fs"],"agendas":[],"decisions":[],"plans":[],"lessons":[{"id":"LSN-0043","file":"discussion/lessons/DSC-0034-system-os-domain-facades/LSN-0043-systemos-domain-facades.md","status":"done","created_at":"2026-05-15","updated_at":"2026-05-15"}]}
 {"type":"discussion","id":"DSC-0023","status":"done","ticket":"perf-full-migration-to-atomic-telemetry","title":"Agenda - [PERF] Full Migration to Atomic Telemetry","created_at":"2026-04-10","updated_at":"2026-04-10","tags":["perf","runtime","telemetry"],"agendas":[{"id":"AGD-0021","file":"AGD-0021-full-migration-to-atomic-telemetry.md","status":"done","created_at":"2026-04-10","updated_at":"2026-04-10"}],"decisions":[{"id":"DEC-0008","file":"DEC-0008-full-migration-to-atomic-telemetry.md","status":"accepted","created_at":"2026-04-10","updated_at":"2026-04-10"}],"plans":[{"id":"PLN-0007","file":"PLN-0007-full-migration-to-atomic-telemetry.md","status":"done","created_at":"2026-04-10","updated_at":"2026-04-10"}],"lessons":[{"id":"LSN-0028","file":"discussion/lessons/DSC-0023-perf-full-migration-to-atomic-telemetry/LSN-0028-converging-to-single-atomic-telemetry-source.md","status":"done","created_at":"2026-04-10","updated_at":"2026-04-10"}]}
 {"type":"discussion","id":"DSC-0020","status":"done","ticket":"jenkins-gitea-integration","title":"Jenkins Gitea Integration and Relocation","created_at":"2026-04-07","updated_at":"2026-04-07","tags":["ci","jenkins","gitea"],"agendas":[{"id":"AGD-0018","file":"AGD-0018-jenkins-gitea-integration-and-relocation.md","status":"done","created_at":"2026-04-07","updated_at":"2026-04-07"}],"decisions":[{"id":"DEC-0003","file":"DEC-0003-jenkins-gitea-strategy.md","status":"accepted","created_at":"2026-04-07","updated_at":"2026-04-07"}],"plans":[{"id":"PLN-0003","file":"PLN-0003-jenkins-gitea-execution.md","status":"done","created_at":"2026-04-07","updated_at":"2026-04-07"}],"lessons":[{"id":"LSN-0021","file":"discussion/lessons/DSC-0020-jenkins-gitea-integration/LSN-0021-jenkins-gitea-integration.md","status":"done","created_at":"2026-04-07","updated_at":"2026-04-07"}]}

discussion/workflow/plans/PLN-0060-plan-focused-window-ownership-api.md

@@ -2,9 +2,9 @@
 id: PLN-0060
 ticket: task-owned-shell-windows
 title: Plan - Focused Window Ownership API
-status: open
+status: done
 created: 2026-05-15
-completed:
+completed: 2026-05-15
 ref_decisions: [DEC-0027]
 tags: [runtime, os, task, window-manager, shell, lifecycle, code]
 ---
@@ -81,12 +81,12 @@ Included:
 
 ## Criterios de Aceite
 
-- [ ] `os.windows().focused_window_belongs_to_task(task_id)` compiles.
+- [x] `os.windows().focused_window_belongs_to_task(task_id)` compiles.
-- [ ] The predicate returns `true` only for the currently focused
+- [x] The predicate returns `true` only for the currently focused
   `WindowOwner::Task(task_id)`.
-- [ ] `Hub`, `Overlay`, absent focus, stale focus, and other task owners return
+- [x] `Hub`, `Overlay`, absent focus, stale focus, and other task owners return
   `false`.
-- [ ] No firmware behavior changes are included in this plan.
+- [x] No firmware behavior changes are included in this plan.
 
 ## Tests / Validacao