crates/console/prometeu-system/src/services/vm_runtime/render_manager.rs

@@ -14,6 +14,46 @@ pub enum RenderSubmissionError {
     PacketAppModeMismatch { active: AppMode },
 }
 
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum RenderPacingPolicy {
+    FrameScheduled,
+    LifecycleDriven,
+}
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum RenderExecutionPolicy {
+    LocalSynchronous,
+    WorkerCapableWithLocalFallback,
+}
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub struct RenderPolicy {
+    pub app_mode: AppMode,
+    pub pacing: RenderPacingPolicy,
+    pub execution: RenderExecutionPolicy,
+}
+
+impl RenderPolicy {
+    pub const fn for_app_mode(app_mode: AppMode) -> Self {
+        match app_mode {
+            AppMode::Game => Self {
+                app_mode,
+                pacing: RenderPacingPolicy::FrameScheduled,
+                execution: RenderExecutionPolicy::WorkerCapableWithLocalFallback,
+            },
+            AppMode::Shell => Self {
+                app_mode,
+                pacing: RenderPacingPolicy::LifecycleDriven,
+                execution: RenderExecutionPolicy::LocalSynchronous,
+            },
+        }
+    }
+
+    pub const fn uses_frame_scheduler(self) -> bool {
+        matches!(self.pacing, RenderPacingPolicy::FrameScheduled)
+    }
+}
+
 pub trait RenderSurface {
     fn consume_submission(&mut self, submission: &RenderSubmission);
 }
@@ -69,6 +109,7 @@ impl RenderHandoff {
 #[derive(Debug, Clone)]
 pub struct RenderManager {
     active_app_mode: AppMode,
+    active_policy: RenderPolicy,
     next_frame_id: FrameId,
     handoff: RenderHandoff,
     transition_state: RenderTransitionState,
@@ -78,6 +119,7 @@ impl RenderManager {
     pub fn new(active_app_mode: AppMode) -> Self {
         Self {
             active_app_mode,
+            active_policy: RenderPolicy::for_app_mode(active_app_mode),
             next_frame_id: FrameId::ZERO,
             handoff: RenderHandoff::default(),
             transition_state: RenderTransitionState::Idle,
@@ -88,6 +130,14 @@ impl RenderManager {
         self.active_app_mode
     }
 
+    pub fn active_render_policy(&self) -> RenderPolicy {
+        self.active_policy
+    }
+
+    pub fn policy_for_app_mode(app_mode: AppMode) -> RenderPolicy {
+        RenderPolicy::for_app_mode(app_mode)
+    }
+
     pub fn transition_state(&self) -> RenderTransitionState {
         self.transition_state
     }
@@ -119,6 +169,7 @@ impl RenderManager {
 
         let previous = self.active_app_mode;
         self.active_app_mode = app_mode;
+        self.active_policy = RenderPolicy::for_app_mode(app_mode);
         self.transition_state = RenderTransitionState::Pending { from: previous, to: app_mode };
     }
 
@@ -239,6 +290,35 @@ mod tests {
         assert_eq!(manager.transition_state(), RenderTransitionState::Idle);
     }
 
+    #[test]
+    fn render_policy_maps_game_to_frame_scheduled_worker_capable() {
+        let policy = RenderPolicy::for_app_mode(AppMode::Game);
+
+        assert_eq!(policy.pacing, RenderPacingPolicy::FrameScheduled);
+        assert_eq!(policy.execution, RenderExecutionPolicy::WorkerCapableWithLocalFallback);
+        assert!(policy.uses_frame_scheduler());
+    }
+
+    #[test]
+    fn render_policy_maps_shell_to_lifecycle_driven_local_sync() {
+        let policy = RenderPolicy::for_app_mode(AppMode::Shell);
+
+        assert_eq!(policy.pacing, RenderPacingPolicy::LifecycleDriven);
+        assert_eq!(policy.execution, RenderExecutionPolicy::LocalSynchronous);
+        assert!(!policy.uses_frame_scheduler());
+    }
+
+    #[test]
+    fn active_render_policy_follows_app_mode_transition() {
+        let mut manager = RenderManager::new(AppMode::Game);
+
+        assert_eq!(manager.active_render_policy(), RenderPolicy::for_app_mode(AppMode::Game));
+
+        manager.set_active_app_mode(AppMode::Shell);
+
+        assert_eq!(manager.active_render_policy(), RenderPolicy::for_app_mode(AppMode::Shell));
+    }
+
     #[test]
     fn publish_latest_hands_submission_to_surface() {
         let mut manager = RenderManager::new(AppMode::Game);

crates/console/prometeu-system/src/services/vm_runtime/tests.rs

@@ -484,6 +484,8 @@ fn tick_shell_profile_closes_gfxui_commands_into_shell_packet() {
     assert_eq!(packet.commands.len(), 1);
     assert!(matches!(packet.commands[0], prometeu_hal::GfxUiCommand::Clear { .. }));
     assert_eq!(hardware.gfx.front_buffer()[0], Color::from_raw(0x11223344).raw());
+    assert_eq!(runtime.frame_scheduler.completed_game_frames(), 0);
+    assert_eq!(runtime.frame_scheduler.active_game_frame_id(), None);
 }
 
 #[test]
@@ -833,6 +835,7 @@ fn tick_game_submissions_are_immutable_and_latest_complete_wins() {
         prometeu_hal::Gfx2dCommand::Clear { color } if color == Color::from_raw(0x11223344)
     ));
     assert_eq!(hardware.gfx.front_buffer()[0], Color::from_raw(0x11223344).raw());
+    assert_eq!(runtime.frame_scheduler.completed_game_frames(), 1);
 
     let second_packet = prometeu_hal::Game2DFramePacket::new(
         Default::default(),

crates/console/prometeu-system/src/services/vm_runtime/tick.rs

@@ -141,7 +141,9 @@ impl VirtualMachineRuntime {
         self.update_fs(log_service, fs, fs_state);
 
         if !self.logical_frame_active {
-            if self.current_cartridge_app_mode == AppMode::Game {
+            if RenderManager::policy_for_app_mode(self.current_cartridge_app_mode)
+                .uses_frame_scheduler()
+            {
                 self.frame_scheduler
                     .authorize_game_frame()
                     .expect("logical frame cannot start while another Game frame is active");
@@ -322,7 +324,9 @@ impl VirtualMachineRuntime {
                         self.logical_frame_index += 1;
                         self.logical_frame_active = false;
                         self.logical_frame_remaining_cycles = 0;
-                        if self.current_cartridge_app_mode == AppMode::Game {
+                        if RenderManager::policy_for_app_mode(self.current_cartridge_app_mode)
+                            .uses_frame_scheduler()
+                        {
                             self.frame_scheduler.complete_game_frame();
                         }
 
@@ -335,7 +339,8 @@ impl VirtualMachineRuntime {
                             self.debug_step_request = false;
                         }
                     } else if run.reason == LogicalFrameEndingReason::BudgetExhausted
-                        && self.current_cartridge_app_mode == AppMode::Game
+                        && RenderManager::policy_for_app_mode(self.current_cartridge_app_mode)
+                            .uses_frame_scheduler()
                     {
                         self.frame_scheduler.record_logical_frame_overrun();
                     }

discussion/index.ndjson

@@ -1,6 +1,6 @@
 {"type":"meta","next_id":{"DSC":42,"AGD":42,"DEC":32,"PLN":98,"LSN":48,"CLSN":1}}
 {"type":"discussion","id":"DSC-0039","status":"abandoned","ticket":"render-pipeline-family-and-future-3d","title":"Render Pipeline Family and Future 3D","created_at":"2026-06-04","updated_at":"2026-06-04","tags":["gfx","renderer","runtime","architecture","pipeline"],"agendas":[{"id":"AGD-0039","file":"AGD-0039-render-pipeline-family-and-future-3d.md","status":"abandoned","created_at":"2026-06-04","updated_at":"2026-06-04","_override_reason":"User explicitly chose to close this agenda without a new decision because DSC-0038 already established enough architecture for future extension, and 3D is intentionally deferred."}],"decisions":[],"plans":[],"lessons":[],"_override_reason":"User explicitly chose to close this agenda without a new decision because DSC-0038 already established enough architecture for future extension, and 3D is intentionally deferred."}
-{"type":"discussion","id":"DSC-0040","status":"in_progress","ticket":"vm-render-parallel-execution-boundary","title":"VM and Render Parallel Execution Boundary","created_at":"2026-06-04","updated_at":"2026-06-05","tags":["runtime","renderer","vm","concurrency","architecture","perf"],"agendas":[{"id":"AGD-0040","file":"AGD-0040-vm-and-render-parallel-execution-boundary.md","status":"accepted","created_at":"2026-06-04","updated_at":"2026-06-05"}],"decisions":[{"id":"DEC-0031","file":"DEC-0031-vm-and-render-parallel-execution-boundary.md","status":"accepted","created_at":"2026-06-05","updated_at":"2026-06-05","ref_agenda":"AGD-0040"}],"plans":[{"id":"PLN-0087","file":"PLN-0087-fix-game2d-packet-overlay-composition.md","status":"done","created_at":"2026-06-05","updated_at":"2026-06-05","ref_decisions":["DEC-0031"]},{"id":"PLN-0088","file":"PLN-0088-define-read-only-render-resource-boundary.md","status":"done","created_at":"2026-06-05","updated_at":"2026-06-05","ref_decisions":["DEC-0031"]},{"id":"PLN-0089","file":"PLN-0089-introduce-render-handoff-abstraction.md","status":"done","created_at":"2026-06-05","updated_at":"2026-06-05","ref_decisions":["DEC-0031"]},{"id":"PLN-0090","file":"PLN-0090-add-render-frame-pacing-contract.md","status":"done","created_at":"2026-06-05","updated_at":"2026-06-05","ref_decisions":["DEC-0031"]},{"id":"PLN-0091","file":"PLN-0091-implement-appmode-render-policy-matrix.md","status":"open","created_at":"2026-06-05","updated_at":"2026-06-05","ref_decisions":["DEC-0031"]},{"id":"PLN-0092","file":"PLN-0092-add-render-epoch-ownership-transitions.md","status":"open","created_at":"2026-06-05","updated_at":"2026-06-05","ref_decisions":["DEC-0031"]},{"id":"PLN-0093","file":"PLN-0093-add-render-telemetry-counters-and-events.md","status":"open","created_at":"2026-06-05","updated_at":"2026-06-05","ref_decisions":["DEC-0031"]},{"id":"PLN-0094","file":"PLN-0094-specify-async-render-boundary.md","status":"open","created_at":"2026-06-05","updated_at":"2026-06-05","ref_decisions":["DEC-0031"]},{"id":"PLN-0095","file":"PLN-0095-prototype-local-render-worker-capability.md","status":"open","created_at":"2026-06-05","updated_at":"2026-06-05","ref_decisions":["DEC-0031"]},{"id":"PLN-0096","file":"PLN-0096-define-render-shutdown-and-failure-handling.md","status":"open","created_at":"2026-06-05","updated_at":"2026-06-05","ref_decisions":["DEC-0031"]},{"id":"PLN-0097","file":"PLN-0097-add-async-render-integration-test-matrix.md","status":"open","created_at":"2026-06-05","updated_at":"2026-06-05","ref_decisions":["DEC-0031"]}],"lessons":[]}
+{"type":"discussion","id":"DSC-0040","status":"in_progress","ticket":"vm-render-parallel-execution-boundary","title":"VM and Render Parallel Execution Boundary","created_at":"2026-06-04","updated_at":"2026-06-05","tags":["runtime","renderer","vm","concurrency","architecture","perf"],"agendas":[{"id":"AGD-0040","file":"AGD-0040-vm-and-render-parallel-execution-boundary.md","status":"accepted","created_at":"2026-06-04","updated_at":"2026-06-05"}],"decisions":[{"id":"DEC-0031","file":"DEC-0031-vm-and-render-parallel-execution-boundary.md","status":"accepted","created_at":"2026-06-05","updated_at":"2026-06-05","ref_agenda":"AGD-0040"}],"plans":[{"id":"PLN-0087","file":"PLN-0087-fix-game2d-packet-overlay-composition.md","status":"done","created_at":"2026-06-05","updated_at":"2026-06-05","ref_decisions":["DEC-0031"]},{"id":"PLN-0088","file":"PLN-0088-define-read-only-render-resource-boundary.md","status":"done","created_at":"2026-06-05","updated_at":"2026-06-05","ref_decisions":["DEC-0031"]},{"id":"PLN-0089","file":"PLN-0089-introduce-render-handoff-abstraction.md","status":"done","created_at":"2026-06-05","updated_at":"2026-06-05","ref_decisions":["DEC-0031"]},{"id":"PLN-0090","file":"PLN-0090-add-render-frame-pacing-contract.md","status":"done","created_at":"2026-06-05","updated_at":"2026-06-05","ref_decisions":["DEC-0031"]},{"id":"PLN-0091","file":"PLN-0091-implement-appmode-render-policy-matrix.md","status":"done","created_at":"2026-06-05","updated_at":"2026-06-05","ref_decisions":["DEC-0031"]},{"id":"PLN-0092","file":"PLN-0092-add-render-epoch-ownership-transitions.md","status":"open","created_at":"2026-06-05","updated_at":"2026-06-05","ref_decisions":["DEC-0031"]},{"id":"PLN-0093","file":"PLN-0093-add-render-telemetry-counters-and-events.md","status":"open","created_at":"2026-06-05","updated_at":"2026-06-05","ref_decisions":["DEC-0031"]},{"id":"PLN-0094","file":"PLN-0094-specify-async-render-boundary.md","status":"open","created_at":"2026-06-05","updated_at":"2026-06-05","ref_decisions":["DEC-0031"]},{"id":"PLN-0095","file":"PLN-0095-prototype-local-render-worker-capability.md","status":"open","created_at":"2026-06-05","updated_at":"2026-06-05","ref_decisions":["DEC-0031"]},{"id":"PLN-0096","file":"PLN-0096-define-render-shutdown-and-failure-handling.md","status":"open","created_at":"2026-06-05","updated_at":"2026-06-05","ref_decisions":["DEC-0031"]},{"id":"PLN-0097","file":"PLN-0097-add-async-render-integration-test-matrix.md","status":"open","created_at":"2026-06-05","updated_at":"2026-06-05","ref_decisions":["DEC-0031"]}],"lessons":[]}
 {"type":"discussion","id":"DSC-0041","status":"open","ticket":"foreground-stack-game-pause-shell-vm-backed","title":"Foreground Stack, Game Pause, and VM-Backed Shell Coexistence","created_at":"2026-06-05","updated_at":"2026-06-05","tags":["runtime","os","lifecycle","shell","game","vm","foreground","architecture"],"agendas":[{"id":"AGD-0041","file":"AGD-0041-foreground-stack-game-pause-shell-vm-backed.md","status":"open","created_at":"2026-06-05","updated_at":"2026-06-05"}],"decisions":[],"plans":[],"lessons":[]}
 {"type":"discussion","id":"DSC-0038","status":"done","ticket":"render-frame-packet-boundary","title":"Logical Render Pipelines and Command Packets","created_at":"2026-05-25","updated_at":"2026-06-04","tags":["gfx","renderer","runtime","frame-composer","architecture","ui","pipeline"],"agendas":[],"decisions":[],"plans":[],"lessons":[{"id":"LSN-0047","file":"discussion/lessons/DSC-0038-render-frame-packet-boundary/LSN-0047-typed-render-submissions-preserve-domain-boundaries.md","status":"done","created_at":"2026-06-04","updated_at":"2026-06-04"}]}
 {"type":"discussion","id":"DSC-0035","status":"done","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":[],"decisions":[],"plans":[],"lessons":[{"id":"LSN-0044","file":"discussion/lessons/DSC-0035-task-owned-shell-windows/LSN-0044-task-window-liveness-belongs-to-the-task.md","status":"done","created_at":"2026-05-15","updated_at":"2026-05-15"}]}

discussion/workflow/plans/PLN-0091-implement-appmode-render-policy-matrix.md

@@ -2,7 +2,7 @@
 id: PLN-0091
 ticket: vm-render-parallel-execution-boundary
 title: Implement AppMode Render Policy Matrix
-status: open
+status: done
 created: 2026-06-05
 ref_decisions: [DEC-0031]
 tags: [runtime, appmode, shell, game, policy]