feat(background): livraison auto au propriétaire + projection des tâches de fond dans le work-state (T1+T3)

T1 — Wake automatique du propriétaire à la complétion.
La complétion d'une tâche de fond est désormais livrée à l'agent
propriétaire dès que la session accepte l'envoi (wake.rs :
mark_completion_delivered au send accepté), via un drain de flux dédié
(structured.rs : drain_reply_stream_with_readiness). L'inbox médiée
enfile l'item sans démarrer de tour ni marquer l'agent busy
(input/mod.rs : enqueue FIFO silencieux). Régression couverte
(tests/agent_wake.rs, tests input/mod.rs).

T3 — Tâches de fond projetées dans le read-model du panneau Work.
AgentWorkState porte désormais background_tasks
(VO AgentBackgroundTaskState), alimenté par un builder best-effort
with_background_tasks(store) : union list_open_for_agent + dispatch des
completions non livrées par owner_agent_id, erreur store => Vec vide
(aucune régression live/busy/tickets). DTO Tauri backgroundTasks et
wiring du BackgroundTaskStore côté state.rs. Le frontend, déjà câblé,
affiche Cancel/Retry (mapping queued/waiting -> pending, tri sur
updatedAtMs). Borne V1 : une tâche terminale déjà livrée n'est plus
énumérable (Retry limité à la fenêtre non livrée).

Tests : cargo build --workspace OK ; cargo test -p application /
-p app-tauri / -p infrastructure verts ; frontend build + vitest verts.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

crates/app-tauri/src/commands.rs

@@ -31,28 +31,27 @@ use crate::dto::{
     parse_agent_id, parse_close_terminal, parse_delete_profile, parse_layout_id, parse_memory_slug,
     parse_node_id, parse_profile_id, parse_project_id, parse_session_id, parse_skill_id,
     parse_task_id, parse_template_id, parse_ticket_id, AgentDriftListDto, AgentDto, AgentListDto,
-    BackgroundTaskDto,
     AssignSkillRequestDto, AttachLiveAgentRequestDto, AttachLiveAgentResponseDto,
-    ChangeAgentProfileDto, ChangeAgentProfileRequestDto, ConfigureProfilesRequestDto,
+    BackgroundTaskDto, ChangeAgentProfileDto, ChangeAgentProfileRequestDto,
-    ConversationDetailsDto, CreateAgentFromTemplateRequestDto, CreateAgentRequestDto,
+    ConfigureProfilesRequestDto, ConversationDetailsDto, CreateAgentFromTemplateRequestDto,
-    CreateLayoutRequestDto, CreateLayoutResultDto, CreateMemoryRequestDto, CreateProjectRequestDto,
+    CreateAgentRequestDto, CreateLayoutRequestDto, CreateLayoutResultDto, CreateMemoryRequestDto,
-    CreateSkillRequestDto, CreateTemplateRequestDto, DeleteLayoutRequestDto, DeleteLayoutResultDto,
+    CreateProjectRequestDto, CreateSkillRequestDto, CreateTemplateRequestDto,
-    DeliveredDelegationRequestDto, DetectProfilesRequestDto, DetectProfilesResponseDto,
+    DeleteLayoutRequestDto, DeleteLayoutResultDto, DeliveredDelegationRequestDto,
-    EffectivePermissionsDto, EmbedderEnginesDto, EmbedderProfileDto, EmbedderProfileListDto,
+    DetectProfilesRequestDto, DetectProfilesResponseDto, EffectivePermissionsDto,
-    ErrorDto, FirstRunStateDto, FrontAttachedRequestDto, GitBranchesDto, GitCheckoutRequestDto,
+    EmbedderEnginesDto, EmbedderProfileDto, EmbedderProfileListDto, ErrorDto, FirstRunStateDto,
-    GitCommitDto, GitCommitListDto, GitCommitRequestDto, GitStageRequestDto, GitStatusListDto,
+    FrontAttachedRequestDto, GitBranchesDto, GitCheckoutRequestDto, GitCommitDto, GitCommitListDto,
-    GraphCommitListDto, HealthRequestDto, HealthResponseDto, InspectConversationRequestDto,
+    GitCommitRequestDto, GitStageRequestDto, GitStatusListDto, GraphCommitListDto,
-    InterruptAgentRequestDto, LaunchAgentRequestDto, LayoutDto, LayoutOperationDto, ListLayoutsDto,
+    HealthRequestDto, HealthResponseDto, InspectConversationRequestDto, InterruptAgentRequestDto,
-    LiveAgentListDto, MemoryDto, MemoryIndexDto, MemoryLinksDto, MemoryListDto,
+    LaunchAgentRequestDto, LayoutDto, LayoutOperationDto, ListLayoutsDto, LiveAgentListDto,
-    OpenTerminalRequestDto, ProfileDto, ProfileListDto, ProjectDto, ProjectListDto,
+    MemoryDto, MemoryIndexDto, MemoryLinksDto, MemoryListDto, OpenTerminalRequestDto, ProfileDto,
-    ProjectPermissionsDto, ProjectWorkStateDto, ReadAgentContextResponseDto,
+    ProfileListDto, ProjectDto, ProjectListDto, ProjectPermissionsDto, ProjectWorkStateDto,
-    ReadConversationPageRequestDto, ReattachChatDto, ReattachResultDto, RecallMemoryRequestDto,
+    ReadAgentContextResponseDto, ReadConversationPageRequestDto, ReattachChatDto,
-    RenameLayoutRequestDto, ReplyChunk, ResizeTerminalRequestDto,
+    ReattachResultDto, RecallMemoryRequestDto, RenameLayoutRequestDto, ReplyChunk,
-    ResolveAgentPermissionsRequestDto, ResumableAgentListDto, SaveEmbedderProfileRequestDto,
+    ResizeTerminalRequestDto, ResolveAgentPermissionsRequestDto, ResumableAgentListDto,
-    SaveProfileRequestDto, SetActiveLayoutRequestDto, SetActiveLayoutResultDto, SkillDto,
+    SaveEmbedderProfileRequestDto, SaveProfileRequestDto, SetActiveLayoutRequestDto,
-    SkillListDto, StopLiveAgentRequestDto, StopLiveAgentResponseDto,
+    SetActiveLayoutResultDto, SkillDto, SkillListDto, StopLiveAgentRequestDto,
-    SyncAgentWithTemplateRequestDto, SyncResultDto, TemplateDto, TemplateListDto,
+    StopLiveAgentResponseDto, SyncAgentWithTemplateRequestDto, SyncResultDto, TemplateDto,
-    TerminalClosedDto, TerminalSessionDto, TurnPageDto, UnassignSkillRequestDto,
+    TemplateListDto, TerminalClosedDto, TerminalSessionDto, TurnPageDto, UnassignSkillRequestDto,
     UpdateAgentContextRequestDto, UpdateAgentPermissionsRequestDto, UpdateMemoryRequestDto,
     UpdateProjectContextRequestDto, UpdateProjectPermissionsRequestDto, UpdateSkillRequestDto,
     UpdateTemplateRequestDto, WriteTerminalRequestDto,

crates/app-tauri/src/dto.rs

@@ -9,11 +9,12 @@
 use serde::{Deserialize, Serialize};
 
 use application::{
-    AgentTicketState, AppError, AttachLiveAgentOutput, ConversationPreviewStatus,
+    AgentBackgroundTaskState, AgentTicketState, AppError, AttachLiveAgentOutput,
-    ConversationTurnWorkPreview, ConversationWorkSummary, CreateProjectInput, CreateProjectOutput,
+    BackgroundTaskKindLabel, ConversationPreviewStatus, ConversationTurnWorkPreview,
-    GitGraphOutput, HealthInput, HealthReport, LayoutKind, ListProjectsOutput, LiveSessionKind,
+    ConversationWorkSummary, CreateProjectInput, CreateProjectOutput, GitGraphOutput, HealthInput,
-    LiveSessionSnapshot, OpenProjectOutput, ProjectWorkState, StopLiveAgentOutput,
+    HealthReport, LayoutKind, ListProjectsOutput, LiveSessionKind, LiveSessionSnapshot,
-    TicketWorkSource, TicketWorkStatus, TurnPage, TurnSource, TurnView,
+    OpenProjectOutput, ProjectWorkState, StopLiveAgentOutput, TicketWorkSource, TicketWorkStatus,
+    TurnPage, TurnSource, TurnView,
 };
 use domain::{AgentBusyState, PageCursor, PageDirection, Project, ProjectId, TurnRole};
 
@@ -1607,6 +1608,50 @@ impl From<AgentTicketState> for AgentTicketStateDto {
     }
 }
 
+/// One background task owned by an agent in the Work panel read model.
+#[derive(Debug, Clone, Serialize)]
+#[serde(rename_all = "camelCase")]
+pub struct AgentBackgroundTaskStateDto {
+    /// Stable task id (UUID string).
+    pub task_id: String,
+    /// Kind discriminant.
+    pub kind: String,
+    /// Lifecycle state.
+    pub state: String,
+    /// Process exit code, when the terminal result carries one.
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub exit_code: Option<i32>,
+    /// Human-readable summary / error / reason of the terminal result.
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub summary: Option<String>,
+    /// Bounded stdout tail.
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub stdout_tail: Option<String>,
+    /// Bounded stderr tail.
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub stderr_tail: Option<String>,
+    /// Creation timestamp, epoch milliseconds.
+    pub created_at_ms: u64,
+    /// Last update timestamp, epoch milliseconds.
+    pub updated_at_ms: u64,
+}
+
+impl From<AgentBackgroundTaskState> for AgentBackgroundTaskStateDto {
+    fn from(task: AgentBackgroundTaskState) -> Self {
+        Self {
+            task_id: task.task_id.to_string(),
+            kind: background_kind_label_from_work_state(task.kind).to_owned(),
+            state: background_state_label(task.state).to_owned(),
+            exit_code: task.exit_code,
+            summary: task.summary,
+            stdout_tail: task.stdout_tail,
+            stderr_tail: task.stderr_tail,
+            created_at_ms: task.created_at_ms,
+            updated_at_ms: task.updated_at_ms,
+        }
+    }
+}
+
 /// One manifest agent's current live/busy state.
 #[derive(Debug, Clone, Serialize)]
 #[serde(rename_all = "camelCase")]
@@ -1623,6 +1668,8 @@ pub struct AgentWorkStateDto {
     pub busy: AgentBusyState,
     /// Pending/in-progress delegation tickets, in FIFO order.
     pub tickets: Vec<AgentTicketStateDto>,
+    /// Best-effort first-class background tasks owned by this agent.
+    pub background_tasks: Vec<AgentBackgroundTaskStateDto>,
 }
 
 /// How much of a [`ConversationWorkSummaryDto`] could be derived, best-effort.
@@ -1748,6 +1795,11 @@ impl From<ProjectWorkState> for ProjectWorkStateDto {
                         .into_iter()
                         .map(AgentTicketStateDto::from)
                         .collect(),
+                    background_tasks: agent
+                        .background_tasks
+                        .into_iter()
+                        .map(AgentBackgroundTaskStateDto::from)
+                        .collect(),
                 })
                 .collect(),
             conversations: state
@@ -2924,6 +2976,16 @@ fn background_kind_label(kind: &BackgroundTaskKind) -> &'static str {
     }
 }
 
+/// Kind discriminant string for a work-state [`BackgroundTaskKindLabel`].
+fn background_kind_label_from_work_state(kind: BackgroundTaskKindLabel) -> &'static str {
+    match kind {
+        BackgroundTaskKindLabel::Command => "command",
+        BackgroundTaskKindLabel::HeadlessRendezvous => "headlessRendezvous",
+        BackgroundTaskKindLabel::SessionResume => "sessionResume",
+        BackgroundTaskKindLabel::Maintenance => "maintenance",
+    }
+}
+
 /// Lifecycle state string for a [`BackgroundTaskState`].
 fn background_state_label(state: BackgroundTaskState) -> &'static str {
     match state {

crates/app-tauri/src/state.rs

@@ -503,6 +503,48 @@ impl AppReconcileBackgroundTasks {
     }
 }
 
+fn schedule_background_ready_retry(
+    ready_tx: tokio::sync::mpsc::UnboundedSender<BackgroundTaskReadyToDeliver>,
+    ready: BackgroundTaskReadyToDeliver,
+) {
+    tauri::async_runtime::spawn(async move {
+        tokio::time::sleep(std::time::Duration::from_secs(1)).await;
+        let _ = ready_tx.send(ready);
+    });
+}
+
+fn schedule_background_wake_retry(
+    wake: Arc<dyn AgentWakePort>,
+    project: Project,
+    owner_agent_id: AgentId,
+    task_id: TaskId,
+) {
+    tauri::async_runtime::spawn(async move {
+        loop {
+            tokio::time::sleep(std::time::Duration::from_secs(1)).await;
+            match wake
+                .wake_agent(
+                    &project,
+                    owner_agent_id,
+                    WakeReason::BackgroundCompletion { task_id },
+                )
+                .await
+            {
+                Ok(()) => break,
+                Err(WakeError::AgentBusy { .. }) => continue,
+                Err(err) => {
+                    application::diag!(
+                        "[background-task] completion wake retry failed: task={} owner={} err={err}",
+                        task_id,
+                        owner_agent_id
+                    );
+                    break;
+                }
+            }
+        }
+    });
+}
+
 struct AppWakeSessionProvider {
     launch_agent: Arc<LaunchAgent>,
     structured_sessions: Arc<StructuredSessions>,
@@ -1690,6 +1732,7 @@ impl AppState {
             let wake = Arc::clone(&background_wake);
             let projects = Arc::clone(&store_port);
             let clock_for_items = Arc::clone(&clock) as Arc<dyn Clock>;
+            let retry_ready = background_ready_tx.clone();
             tauri::async_runtime::spawn(async move {
                 while let Some(ready) = background_ready_rx.recv().await {
                     let item = InboxItem {
@@ -1712,6 +1755,7 @@ impl AppState {
                                 ready.owner_agent_id,
                                 receipt.depth
                             );
+                            schedule_background_ready_retry(retry_ready.clone(), ready);
                             continue;
                         }
                         Ok(_) => {}
@@ -1722,6 +1766,7 @@ impl AppState {
                                 ready.task_id,
                                 ready.owner_agent_id
                             );
+                            schedule_background_ready_retry(retry_ready.clone(), ready);
                             continue;
                         }
                         Err(err) => {
@@ -1758,6 +1803,20 @@ impl AppState {
                         )
                         .await
                     {
+                        if matches!(err, WakeError::AgentBusy { .. }) {
+                            application::diag!(
+                                "[background-task] completion wake postponed: task={} owner={}",
+                                ready.task_id,
+                                ready.owner_agent_id
+                            );
+                            schedule_background_wake_retry(
+                                Arc::clone(&wake),
+                                project,
+                                ready.owner_agent_id,
+                                ready.task_id,
+                            );
+                            continue;
+                        }
                         application::diag!(
                             "[background-task] completion wake failed: task={} owner={} err={err}",
                             ready.task_id,
@@ -1801,7 +1860,8 @@ impl AppState {
                 Arc::new(AppHandoffProvider) as Arc<dyn application::HandoffProvider>,
                 Arc::new(AppConversationLogProvider)
                     as Arc<dyn application::ConversationLogProvider>,
-            ),
+            )
+            .with_background_tasks(Arc::clone(&background_tasks_port)),
         );
         // Lot LS6 — rotation (hors chemin chaud) + lecture humaine paginée. Tous deux
         // composent le provider d'archive par root ; la rotation lit aussi le handoff

crates/app-tauri/tests/dto_agents.rs

@@ -227,6 +227,7 @@ fn project_work_state_dto_serialises_live_and_busy_camelcase() {
                 since_ms: 1_234,
             },
             tickets: vec![],
+            background_tasks: vec![],
         }],
         conversations: vec![],
     });
@@ -285,6 +286,7 @@ fn project_work_state_dto_serialises_tickets_camelcase() {
                     task_len: 8,
                 },
             ],
+            background_tasks: vec![],
         }],
         conversations: vec![],
     });

crates/application/src/agent/mod.rs

@@ -19,7 +19,8 @@ pub(crate) use lifecycle::ReattachDecision;
 
 pub use session_limit::{AgentResumer, SessionLimitService, RESUME_PROMPT};
 pub use structured::{
-    drain_with_readiness, drain_with_readiness_outcome, send_blocking, TurnOutcome,
+    drain_reply_stream_with_readiness, drain_with_readiness, drain_with_readiness_outcome,
+    send_blocking, TurnOutcome,
 };
 
 pub use catalogue::{

crates/application/src/agent/structured.rs

@@ -16,7 +16,7 @@ use std::time::Duration;
 
 use domain::ids::AgentId;
 use domain::input::InputMediator;
-use domain::ports::{AgentSession, AgentSessionError, ReplyEvent};
+use domain::ports::{AgentSession, AgentSessionError, ReplyEvent, ReplyStream};
 use domain::readiness::{ReadinessPolicy, ReadinessSignal};
 
 /// Issue d'un tour drainé (ARCHITECTURE §21.2-T4, réconciliation de la limite de
@@ -113,6 +113,36 @@ pub async fn drain_with_readiness(
     }
 }
 
+/// Draine un flux de réponse déjà ouvert, avec la même politique de readiness que
+/// [`drain_with_readiness`].
+///
+/// Ce point d'entrée sert aux appelants qui doivent effectuer une action durable
+/// après `AgentSession::send` réussi mais avant le drain complet du tour.
+pub async fn drain_reply_stream_with_readiness(
+    stream: ReplyStream,
+    mediator: &dyn InputMediator,
+    agent: AgentId,
+) -> Result<String, AgentSessionError> {
+    match drain_stream_to_final(
+        stream,
+        |event| {
+            if !matches!(event, ReplyEvent::Final { .. }) {
+                mediator.mark_alive(agent);
+            }
+        },
+        |signal| {
+            if signal == ReadinessSignal::TurnEnded {
+                mediator.mark_idle(agent);
+            }
+        },
+    )? {
+        TurnOutcome::Completed(content) => Ok(content),
+        TurnOutcome::RateLimited { .. } => Err(AgentSessionError::Io(
+            "le tour s'est clos en limite de session, sans contenu Final".to_string(),
+        )),
+    }
+}
+
 /// Variante **riche** de [`drain_with_readiness`] : même branchement readiness, mais
 /// retourne le [`TurnOutcome`] complet au lieu de réduire la limite à une erreur.
 ///
@@ -209,6 +239,15 @@ async fn drain_bounded_events(
 async fn drain_to_final(
     session: &dyn AgentSession,
     prompt: &str,
+    on_event: impl FnMut(&ReplyEvent),
+    on_signal: impl FnMut(ReadinessSignal),
+) -> Result<TurnOutcome, AgentSessionError> {
+    let stream = session.send(prompt).await?;
+    drain_stream_to_final(stream, on_event, on_signal)
+}
+
+fn drain_stream_to_final(
+    stream: ReplyStream,
     mut on_event: impl FnMut(&ReplyEvent),
     mut on_signal: impl FnMut(ReadinessSignal),
 ) -> Result<TurnOutcome, AgentSessionError> {
@@ -216,7 +255,6 @@ async fn drain_to_final(
     // `RateLimited` traverse le flux. Sert UNIQUEMENT au cas « clos sans Final » —
     // un `Final` ultérieur l'emporte toujours (le tour a réellement abouti).
     let mut last_rate_limit: Option<Option<i64>> = None;
-    let stream = session.send(prompt).await?;
     for event in stream {
         // Battement de vivacité (lot 2) : notifié pour CHAQUE événement brut, avant le
         // classement readiness. Le sink décide (les non-terminaux prouvent la vivacité).

crates/application/src/background/mod.rs

@@ -193,10 +193,7 @@ impl CancelBackgroundTask {
     ///
     /// # Errors
     /// [`AppError`] if the runner or store fails.
-    pub async fn execute(
+    pub async fn execute(&self, task_id: TaskId) -> Result<CancelBackgroundTaskOutput, AppError> {
-        &self,
-        task_id: TaskId,
-    ) -> Result<CancelBackgroundTaskOutput, AppError> {
         self.runner.cancel(task_id).await.map_err(map_port_err)?;
         let task = self.store.get(task_id).await.map_err(map_port_err)?;
         Ok(CancelBackgroundTaskOutput { task })
@@ -256,10 +253,7 @@ impl RetryBackgroundTask {
     /// # Errors
     /// [`AppError::NotFound`] if the task is unknown, [`AppError::Invalid`] if it
     /// is not a terminal command task or its command is no longer available.
-    pub async fn execute(
+    pub async fn execute(&self, task_id: TaskId) -> Result<SpawnBackgroundCommandOutput, AppError> {
-        &self,
-        task_id: TaskId,
-    ) -> Result<SpawnBackgroundCommandOutput, AppError> {
         let old = self
             .store
             .get(task_id)

crates/application/src/lib.rs

@@ -33,25 +33,27 @@ pub mod window;
 pub mod workstate;
 
 pub use agent::{
-    drain_with_readiness, drain_with_readiness_outcome, reference_profile_id, reference_profiles,
+    drain_reply_stream_with_readiness, drain_with_readiness, drain_with_readiness_outcome,
-    selectable_reference_profiles, send_blocking, AgentResumer, ChangeAgentProfile,
+    reference_profile_id, reference_profiles, selectable_reference_profiles, send_blocking,
-    ChangeAgentProfileInput, ChangeAgentProfileOutput, ConfigureProfiles, ConfigureProfilesInput,
+    AgentResumer, ChangeAgentProfile, ChangeAgentProfileInput, ChangeAgentProfileOutput,
-    ConfigureProfilesOutput, CreateAgentFromScratch, CreateAgentInput, CreateAgentOutput,
+    ConfigureProfiles, ConfigureProfilesInput, ConfigureProfilesOutput, CreateAgentFromScratch,
-    DeleteAgent, DeleteAgentInput, DeleteProfile, DeleteProfileInput, DetectProfiles,
+    CreateAgentInput, CreateAgentOutput, DeleteAgent, DeleteAgentInput, DeleteProfile,
-    DetectProfilesInput, DetectProfilesOutput, FirstRunState, FirstRunStateOutput, HandoffProvider,
+    DeleteProfileInput, DetectProfiles, DetectProfilesInput, DetectProfilesOutput, FirstRunState,
-    InjectedLiveRow, InspectConversation, InspectConversationInput, InspectConversationOutput,
+    FirstRunStateOutput, HandoffProvider, InjectedLiveRow, InspectConversation,
-    LaunchAgent, LaunchAgentInput, LaunchAgentOutput, ListAgents, ListAgentsInput,
+    InspectConversationInput, InspectConversationOutput, LaunchAgent, LaunchAgentInput,
-    ListAgentsOutput, ListProfiles, ListProfilesOutput, ListResumableAgents,
+    LaunchAgentOutput, ListAgents, ListAgentsInput, ListAgentsOutput, ListProfiles,
-    ListResumableAgentsInput, ListResumableAgentsOutput, LiveStateLeanProvider, McpRuntime,
+    ListProfilesOutput, ListResumableAgents, ListResumableAgentsInput, ListResumableAgentsOutput,
-    PermissionProjectorRegistry, ProfileAvailability, ProviderSessionProvider, ReadAgentContext,
+    LiveStateLeanProvider, McpRuntime, PermissionProjectorRegistry, ProfileAvailability,
-    ReadAgentContextInput, ReadAgentContextOutput, ReferenceProfiles, ReferenceProfilesOutput,
+    ProviderSessionProvider, ReadAgentContext, ReadAgentContextInput, ReadAgentContextOutput,
-    ResumableAgent, SaveProfile, SaveProfileInput, SaveProfileOutput, SessionLimitService,
+    ReferenceProfiles, ReferenceProfilesOutput, ResumableAgent, SaveProfile, SaveProfileInput,
-    StructuredSessionDescriptor, TurnOutcome, UpdateAgentContext, UpdateAgentContextInput,
+    SaveProfileOutput, SessionLimitService, StructuredSessionDescriptor, TurnOutcome,
-    AGENT_MEMORY_RECALL_BUDGET, CODEX_SUBMIT_DELAY_MS, LIVE_STATE_INJECT_MAX, RESUME_PROMPT,
+    UpdateAgentContext, UpdateAgentContextInput, AGENT_MEMORY_RECALL_BUDGET, CODEX_SUBMIT_DELAY_MS,
+    LIVE_STATE_INJECT_MAX, RESUME_PROMPT,
 };
 pub use background::{
-    BackgroundCommandArchive, CancelBackgroundTask, CancelBackgroundTaskOutput, RetryBackgroundTask,
+    BackgroundCommandArchive, CancelBackgroundTask, CancelBackgroundTaskOutput,
-    SpawnBackgroundCommand, SpawnBackgroundCommandInput, SpawnBackgroundCommandOutput,
+    RetryBackgroundTask, SpawnBackgroundCommand, SpawnBackgroundCommandInput,
+    SpawnBackgroundCommandOutput,
 };
 pub use conversation::{
     ConversationArchiveProvider, ReadConversationPage, ReadConversationPageInput, RecordTurn,
@@ -140,11 +142,11 @@ pub use terminal::{
 };
 pub use window::{MoveTabToNewWindow, MoveTabToNewWindowInput, MoveTabToNewWindowOutput};
 pub use workstate::{
-    AgentTicketState, AgentWorkState, AttachLiveAgent, AttachLiveAgentInput, AttachLiveAgentOutput,
+    AgentBackgroundTaskState, AgentTicketState, AgentWorkState, AttachLiveAgent,
-    ConversationLogProvider, ConversationPreviewStatus, ConversationTurnWorkPreview,
+    AttachLiveAgentInput, AttachLiveAgentOutput, BackgroundTaskKindLabel, ConversationLogProvider,
-    ConversationWorkSummary, GetLiveStateLean, GetProjectWorkState, GetProjectWorkStateInput,
+    ConversationPreviewStatus, ConversationTurnWorkPreview, ConversationWorkSummary,
-    LeanLiveEntry, LeanLiveState, LiveWorkSession, ProjectWorkState, ReconcileLiveState,
+    GetLiveStateLean, GetProjectWorkState, GetProjectWorkStateInput, LeanLiveEntry, LeanLiveState,
-    ReconcileLiveStateInput, StopLiveAgent, StopLiveAgentInput, StopLiveAgentOutput,
+    LiveWorkSession, ProjectWorkState, ReconcileLiveState, ReconcileLiveStateInput, StopLiveAgent,
-    TicketWorkSource, TicketWorkStatus, UpdateLiveState, UpdateLiveStateInput,
+    StopLiveAgentInput, StopLiveAgentOutput, TicketWorkSource, TicketWorkStatus, UpdateLiveState,
-    LIVE_STATE_MAX_ENTRIES, LIVE_STATE_TTL_MS,
+    UpdateLiveStateInput, LIVE_STATE_MAX_ENTRIES, LIVE_STATE_TTL_MS,
 };

crates/application/src/orchestrator/wake.rs

@@ -19,7 +19,7 @@ use domain::ports::{
 };
 use domain::project::Project;
 
-use crate::agent::drain_with_readiness;
+use crate::agent::drain_reply_stream_with_readiness;
 
 /// Provides a structured/headless session for a wake turn.
 ///
@@ -96,7 +96,7 @@ impl AgentWakeService {
         });
 
         if self.input.busy_state(agent).is_busy() {
-            return Ok(());
+            return Err(WakeError::AgentBusy { agent_id: agent });
         }
 
         let Some(item) = self.inbox.dequeue_next(agent) else {
@@ -117,26 +117,29 @@ impl AgentWakeService {
             agent_id: agent,
         });
         let session = self.sessions.session_for_wake(project, agent).await?;
-        drain_with_readiness(
+        let stream = session
-            session.as_ref(),
+            .send(&delivery.prompt)
-            &delivery.prompt,
-            None,
-            self.input.as_ref(),
-            agent,
-        )
             .await
             .map_err(|err| WakeError::Session(err.to_string()))?;
 
-        self.mailbox.cancel_head(agent, delivery.ticket_id);
-        self.input.mark_idle(agent);
-        guard.disarm();
-
         if let Some(task_id) = delivery.delivered_task_id {
             self.tasks
                 .mark_completion_delivered(task_id)
                 .await
                 .map_err(|err| WakeError::Store(err.to_string()))?;
+            self.publish(DomainEvent::BackgroundTaskCompletionDelivered {
+                project_id: project.id,
+                task_id,
+                owner_agent_id: agent,
+            });
         }
+        drain_reply_stream_with_readiness(stream, self.input.as_ref(), agent)
+            .await
+            .map_err(|err| WakeError::Session(err.to_string()))?;
+
+        self.mailbox.cancel_head(agent, delivery.ticket_id);
+        self.input.mark_idle(agent);
+        guard.disarm();
         Ok(())
     }
 

crates/application/src/workstate/mod.rs

@@ -23,11 +23,12 @@ use std::collections::{HashMap, HashSet};
 use std::sync::Arc;
 
 use domain::input::{AgentBusyState, InputSource};
-use domain::ports::AgentContextStore;
+use domain::ports::{AgentContextStore, BackgroundTaskPortError, BackgroundTaskStore};
 use domain::{
-    AgentId, AgentQueueSnapshot, ConversationId, ConversationLog, ConversationTurn, Handoff,
+    AgentId, AgentQueueSnapshot, BackgroundTask, BackgroundTaskKind, BackgroundTaskResult,
-    HandoffStore, InputMediator, NodeId, ProfileId, Project, ProjectPath, QueuedTicketSnapshot,
+    BackgroundTaskState, ConversationId, ConversationLog, ConversationTurn, Handoff, HandoffStore,
-    SessionId, TicketId, TurnId, TurnRole,
+    InputMediator, NodeId, ProfileId, Project, ProjectPath, QueuedTicketSnapshot, SessionId,
+    TaskId, TicketId, TurnId, TurnRole,
 };
 
 use crate::error::AppError;
@@ -150,6 +151,48 @@ pub struct AgentWorkState {
     pub busy: AgentBusyState,
     /// Pending/in-progress delegation tickets, in FIFO order.
     pub tickets: Vec<AgentTicketState>,
+    /// Best-effort first-class background tasks owned by this agent.
+    ///
+    /// V1 bound: terminal tasks already delivered to the owner are no longer
+    /// enumerable by the background-task store, so they disappear from Work;
+    /// retry is available only while the terminal completion is still undelivered.
+    pub background_tasks: Vec<AgentBackgroundTaskState>,
+}
+
+/// Background task projected into an agent's work state.
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub struct AgentBackgroundTaskState {
+    /// Stable task id.
+    pub task_id: TaskId,
+    /// Kind discriminant.
+    pub kind: BackgroundTaskKindLabel,
+    /// Current lifecycle state.
+    pub state: BackgroundTaskState,
+    /// Process exit code, when the terminal result carries one.
+    pub exit_code: Option<i32>,
+    /// Human-readable summary / error / reason of the terminal result.
+    pub summary: Option<String>,
+    /// Bounded stdout tail.
+    pub stdout_tail: Option<String>,
+    /// Bounded stderr tail.
+    pub stderr_tail: Option<String>,
+    /// Creation timestamp, epoch milliseconds.
+    pub created_at_ms: u64,
+    /// Last update timestamp, epoch milliseconds.
+    pub updated_at_ms: u64,
+}
+
+/// Background task kind label used by the work-state read model.
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum BackgroundTaskKindLabel {
+    /// A non-interactive command.
+    Command,
+    /// A headless inter-agent rendezvous.
+    HeadlessRendezvous,
+    /// Resume of a structured agent session.
+    SessionResume,
+    /// Internal maintenance work.
+    Maintenance,
 }
 
 /// One queued delegation ticket, projected for the work-state read model.
@@ -229,6 +272,8 @@ pub struct GetProjectWorkState {
     handoffs: Option<Arc<dyn HandoffProvider>>,
     /// Per-root log source (fallback), wired best-effort; `None` ⇒ no fallback turns.
     logs: Option<Arc<dyn ConversationLogProvider>>,
+    /// Background-task read model source, wired best-effort; `None` ⇒ no tasks.
+    background_tasks: Option<Arc<dyn BackgroundTaskStore>>,
 }
 
 impl GetProjectWorkState {
@@ -250,6 +295,7 @@ impl GetProjectWorkState {
             queue,
             handoffs: None,
             logs: None,
+            background_tasks: None,
         }
     }
 
@@ -267,6 +313,15 @@ impl GetProjectWorkState {
         self
     }
 
+    /// Wires the best-effort background-task source for the Work panel. Builder so
+    /// existing call sites/tests stay unchanged; absent or failing store ⇒ empty
+    /// `background_tasks` without affecting live/busy/tickets.
+    #[must_use]
+    pub fn with_background_tasks(mut self, store: Arc<dyn BackgroundTaskStore>) -> Self {
+        self.background_tasks = Some(store);
+        self
+    }
+
     /// Executes the read-only aggregation.
     ///
     /// # Errors
@@ -278,10 +333,13 @@ impl GetProjectWorkState {
     ) -> Result<ProjectWorkState, AppError> {
         let manifest = self.contexts.load_manifest(&input.project).await?;
         let live_by_agent = live_by_agent(self.live.live_agent_snapshots());
-        let agents = manifest
+        let undelivered_completions = match &self.background_tasks {
-            .entries
+            Some(store) => Some(store.list_undelivered_completions().await),
-            .iter()
+            None => None,
-            .map(|entry| {
+        };
+
+        let mut agents = Vec::with_capacity(manifest.entries.len());
+        for entry in &manifest.entries {
             let agent = entry
                 .to_agent()
                 .map_err(|err| AppError::Invalid(err.to_string()))?;
@@ -295,23 +353,27 @@ impl GetProjectWorkState {
             // Tickets are crossed with the busy state: only an agent absent from
             // the manifest is dropped (this loop only visits manifest entries), so
             // the manifest boundary is naturally preserved.
-                let busy_ticket = self.input.busy_state(agent.id).ticket();
+            let busy = self.input.busy_state(agent.id);
+            let busy_ticket = busy.ticket();
             let tickets = self
                 .queue
                 .queue_for(agent.id)
                 .into_iter()
                 .map(|snapshot| ticket_state(snapshot, busy_ticket))
                 .collect();
-                Ok(AgentWorkState {
+            let background_tasks = self
+                .background_tasks_for_agent(&input.project, agent.id, &undelivered_completions)
+                .await;
+            agents.push(AgentWorkState {
                 agent_id: agent.id,
                 name: agent.name,
                 profile_id: agent.profile_id,
                 live,
-                    busy: self.input.busy_state(agent.id),
+                busy,
                 tickets,
-                })
+                background_tasks,
-            })
+            });
-            .collect::<Result<Vec<_>, AppError>>()?;
+        }
 
         // Lot C — best-effort conversation summaries. Only the conversations
         // visible through the projected tickets are summarised, deduplicated in
@@ -354,6 +416,106 @@ impl GetProjectWorkState {
         }
         summaries
     }
+
+    async fn background_tasks_for_agent(
+        &self,
+        project: &Project,
+        agent_id: AgentId,
+        undelivered_completions: &Option<Result<Vec<BackgroundTask>, BackgroundTaskPortError>>,
+    ) -> Vec<AgentBackgroundTaskState> {
+        let Some(store) = &self.background_tasks else {
+            return Vec::new();
+        };
+        let Some(Ok(undelivered_completions)) = undelivered_completions.as_ref() else {
+            return Vec::new();
+        };
+        let Ok(open) = store.list_open_for_agent(agent_id).await else {
+            return Vec::new();
+        };
+
+        let mut by_id: HashMap<TaskId, BackgroundTask> = HashMap::new();
+        for task in open {
+            by_id.insert(task.id, task);
+        }
+        for task in undelivered_completions
+            .iter()
+            .filter(|task| task.owner_agent_id == agent_id)
+        {
+            by_id.entry(task.id).or_insert_with(|| task.clone());
+        }
+
+        let mut tasks: Vec<_> = by_id
+            .into_values()
+            .filter(|task| task.project_id == project.id)
+            .map(AgentBackgroundTaskState::from)
+            .collect();
+        tasks.sort_by_key(|task| (task.created_at_ms, task.task_id));
+        tasks
+    }
+}
+
+impl From<BackgroundTask> for AgentBackgroundTaskState {
+    fn from(task: BackgroundTask) -> Self {
+        let (exit_code, summary, stdout_tail, stderr_tail) = flatten_background_result(&task);
+        Self {
+            task_id: task.id,
+            kind: BackgroundTaskKindLabel::from(&task.kind),
+            state: task.state,
+            exit_code,
+            summary,
+            stdout_tail,
+            stderr_tail,
+            created_at_ms: task.created_at_ms,
+            updated_at_ms: task.updated_at_ms,
+        }
+    }
+}
+
+impl From<&BackgroundTaskKind> for BackgroundTaskKindLabel {
+    fn from(kind: &BackgroundTaskKind) -> Self {
+        match kind {
+            BackgroundTaskKind::Command { .. } => Self::Command,
+            BackgroundTaskKind::HeadlessRendezvous { .. } => Self::HeadlessRendezvous,
+            BackgroundTaskKind::SessionResume { .. } => Self::SessionResume,
+            BackgroundTaskKind::Maintenance { .. } => Self::Maintenance,
+        }
+    }
+}
+
+fn flatten_background_result(
+    task: &BackgroundTask,
+) -> (Option<i32>, Option<String>, Option<String>, Option<String>) {
+    match &task.result {
+        Some(BackgroundTaskResult::Success {
+            exit_code,
+            summary,
+            stdout_tail,
+            stderr_tail,
+            ..
+        }) => (
+            *exit_code,
+            Some(summary.clone()),
+            stdout_tail.clone(),
+            stderr_tail.clone(),
+        ),
+        Some(BackgroundTaskResult::Failure {
+            exit_code,
+            error,
+            stdout_tail,
+            stderr_tail,
+            ..
+        }) => (
+            *exit_code,
+            Some(error.clone()),
+            stdout_tail.clone(),
+            stderr_tail.clone(),
+        ),
+        Some(BackgroundTaskResult::Cancelled { reason, .. })
+        | Some(BackgroundTaskResult::Expired { reason, .. }) => {
+            (None, Some(reason.clone()), None, None)
+        }
+        None => (None, None, None, None),
+    }
 }
 
 /// Collects the conversation ids referenced by the agents' tickets, deduplicated in

crates/application/tests/agent_wake.rs

@@ -298,6 +298,16 @@ impl BackgroundTaskStore for FakeTaskStore {
 #[derive(Default)]
 struct FakeSession {
     prompts: Mutex<Vec<String>>,
+    events: Mutex<Option<Vec<ReplyEvent>>>,
+}
+
+impl FakeSession {
+    fn with_events(events: Vec<ReplyEvent>) -> Self {
+        Self {
+            prompts: Mutex::new(Vec::new()),
+            events: Mutex::new(Some(events)),
+        }
+    }
 }
 
 #[async_trait]
@@ -312,12 +322,12 @@ impl AgentSession for FakeSession {
 
     async fn send(&self, prompt: &str) -> Result<ReplyStream, AgentSessionError> {
         self.prompts.lock().unwrap().push(prompt.to_owned());
-        Ok(Box::new(
+        let events = self.events.lock().unwrap().take().unwrap_or_else(|| {
             vec![ReplyEvent::Final {
                 content: "ack".to_owned(),
             }]
-            .into_iter(),
+        });
-        ))
+        Ok(Box::new(events.into_iter()))
     }
 
     async fn shutdown(&self) -> Result<(), AgentSessionError> {
@@ -421,15 +431,16 @@ async fn owner_busy_does_not_start_concurrent_wake_and_keeps_item_queued() {
         .unwrap();
     turns.force_busy(owner, ticket(99));
 
-    service(inbox.clone(), turns, tasks, sessions)
+    let err = service(inbox.clone(), turns, tasks, sessions)
         .wake_agent(
             &project,
             owner,
             WakeReason::BackgroundCompletion { task_id },
         )
         .await
-        .unwrap();
+        .unwrap_err();
 
+    assert_eq!(err, WakeError::AgentBusy { agent_id: owner });
     assert!(session.prompts.lock().unwrap().is_empty());
     assert_eq!(inbox.snapshot(owner).depth, 1);
 }
@@ -489,6 +500,35 @@ async fn completion_is_marked_delivered_after_successful_wake() {
     assert_eq!(tasks.delivered(), vec![task_id]);
 }
 
+#[tokio::test]
+async fn completion_is_marked_delivered_once_send_is_accepted_even_if_drain_fails() {
+    let project = project();
+    let owner = agent(1);
+    let task_id = task_id(10);
+    let inbox = Arc::new(FakeInbox::default());
+    let turns = Arc::new(SharedTurnState::default());
+    let tasks = Arc::new(FakeTaskStore::default());
+    let session = Arc::new(FakeSession::with_events(Vec::new()));
+    let sessions = Arc::new(FakeSessionProvider::with_session(session.clone()));
+    tasks.insert(completed_task(&project, owner, task_id, "done"));
+    inbox
+        .enqueue_message(owner, completion_item(owner, task_id, ticket(20)))
+        .unwrap();
+
+    let err = service(inbox, turns, tasks.clone(), sessions)
+        .wake_agent(
+            &project,
+            owner,
+            WakeReason::BackgroundCompletion { task_id },
+        )
+        .await
+        .unwrap_err();
+
+    assert!(matches!(err, WakeError::Session(_)));
+    assert_eq!(session.prompts.lock().unwrap().len(), 1);
+    assert_eq!(tasks.delivered(), vec![task_id]);
+}
+
 #[tokio::test]
 async fn wake_drains_exactly_one_item_per_turn() {
     let project = project();

crates/application/tests/workstate.rs

@@ -16,13 +16,15 @@ use domain::mailbox::{
     AgentQueueSnapshot, MailboxError, PendingReply, QueuedTicketSnapshot, Ticket, TurnResolution,
 };
 use domain::ports::{
-    AgentContextStore, AgentSession, AgentSessionError, PtyHandle, ReplyStream, StoreError,
+    AgentContextStore, AgentSession, AgentSessionError, BackgroundTaskPortError,
+    BackgroundTaskStore, PtyHandle, ReplyStream, StoreError,
 };
 use domain::{
-    Agent, AgentBusyState, AgentId, AgentManifest, AgentOrigin, ConversationId, ConversationLog,
+    Agent, AgentBusyState, AgentId, AgentManifest, AgentOrigin, BackgroundTask, BackgroundTaskKind,
-    ConversationTurn, Handoff, HandoffStore, InputMediator, InputSource, ManifestEntry,
+    BackgroundTaskResult, BackgroundTaskState, BackgroundTaskWakePolicy, ConversationId,
-    MarkdownDoc, NodeId, ProfileId, Project, ProjectId, ProjectPath, PtySize, RemoteRef, SessionId,
+    ConversationLog, ConversationTurn, Handoff, HandoffStore, InputMediator, InputSource,
-    SessionKind, TerminalSession, TicketId, TurnId, TurnRole,
+    ManifestEntry, MarkdownDoc, NodeId, ProfileId, Project, ProjectId, ProjectPath, PtySize,
+    RemoteRef, SessionId, SessionKind, TaskId, TerminalSession, TicketId, TurnId, TurnRole,
 };
 use uuid::Uuid;
 
@@ -46,6 +48,10 @@ fn ticket_id(n: u128) -> domain::TicketId {
     domain::TicketId::from_uuid(Uuid::from_u128(n))
 }
 
+fn task_id(n: u128) -> TaskId {
+    TaskId::from_uuid(Uuid::from_u128(n))
+}
+
 fn project() -> Project {
     Project::new(
         ProjectId::from_uuid(Uuid::from_u128(1)),
@@ -147,6 +153,106 @@ struct FakeQueue {
     queues: Mutex<HashMap<AgentId, Vec<QueuedTicketSnapshot>>>,
 }
 
+#[derive(Default)]
+struct FakeBackgroundTaskStore {
+    tasks: Mutex<Vec<BackgroundTask>>,
+    fail_open: Mutex<bool>,
+    fail_undelivered: Mutex<bool>,
+}
+
+impl FakeBackgroundTaskStore {
+    fn set_tasks(&self, tasks: Vec<BackgroundTask>) {
+        *self.tasks.lock().unwrap() = tasks;
+    }
+
+    fn fail_open(&self) {
+        *self.fail_open.lock().unwrap() = true;
+    }
+
+    fn fail_undelivered(&self) {
+        *self.fail_undelivered.lock().unwrap() = true;
+    }
+}
+
+#[async_trait]
+impl BackgroundTaskStore for FakeBackgroundTaskStore {
+    async fn create(&self, task: &BackgroundTask) -> Result<(), BackgroundTaskPortError> {
+        self.tasks.lock().unwrap().push(task.clone());
+        Ok(())
+    }
+
+    async fn get(&self, id: TaskId) -> Result<Option<BackgroundTask>, BackgroundTaskPortError> {
+        Ok(self
+            .tasks
+            .lock()
+            .unwrap()
+            .iter()
+            .find(|task| task.id == id)
+            .cloned())
+    }
+
+    async fn save(&self, task: &BackgroundTask) -> Result<(), BackgroundTaskPortError> {
+        let mut tasks = self.tasks.lock().unwrap();
+        if let Some(existing) = tasks.iter_mut().find(|existing| existing.id == task.id) {
+            *existing = task.clone();
+        } else {
+            tasks.push(task.clone());
+        }
+        Ok(())
+    }
+
+    async fn list_open_for_agent(
+        &self,
+        agent_id: AgentId,
+    ) -> Result<Vec<BackgroundTask>, BackgroundTaskPortError> {
+        if *self.fail_open.lock().unwrap() {
+            return Err(BackgroundTaskPortError::Store("open failed".to_owned()));
+        }
+        Ok(self
+            .tasks
+            .lock()
+            .unwrap()
+            .iter()
+            .filter(|task| task.owner_agent_id == agent_id && !task.is_terminal())
+            .cloned()
+            .collect())
+    }
+
+    async fn list_undelivered_completions(
+        &self,
+    ) -> Result<Vec<BackgroundTask>, BackgroundTaskPortError> {
+        if *self.fail_undelivered.lock().unwrap() {
+            return Err(BackgroundTaskPortError::Store(
+                "undelivered failed".to_owned(),
+            ));
+        }
+        Ok(self
+            .tasks
+            .lock()
+            .unwrap()
+            .iter()
+            .filter(|task| task.has_pending_completion_delivery())
+            .cloned()
+            .collect())
+    }
+
+    async fn mark_completion_delivered(
+        &self,
+        task_id: TaskId,
+    ) -> Result<(), BackgroundTaskPortError> {
+        if let Some(task) = self
+            .tasks
+            .lock()
+            .unwrap()
+            .iter_mut()
+            .find(|task| task.id == task_id)
+        {
+            task.completion_delivered = true;
+        }
+        Ok(())
+    }
+}
+
 impl FakeQueue {
     fn set(&self, agent: AgentId, tickets: Vec<QueuedTicketSnapshot>) {
         self.queues.lock().unwrap().insert(agent, tickets);
@@ -400,6 +506,106 @@ struct ConvFixture {
     project: Project,
 }
 
+struct BackgroundFixture {
+    usecase: GetProjectWorkState,
+    queue: Arc<FakeQueue>,
+    store: Arc<FakeBackgroundTaskStore>,
+    project: Project,
+}
+
+fn background_fixture(agents: &[Agent]) -> BackgroundFixture {
+    let pty = Arc::new(TerminalSessions::new());
+    let structured = Arc::new(StructuredSessions::new());
+    let live = Arc::new(LiveSessions::new(pty, structured));
+    let input = Arc::new(FakeInput::default());
+    let queue = Arc::new(FakeQueue::default());
+    let store = Arc::new(FakeBackgroundTaskStore::default());
+    let usecase = GetProjectWorkState::new(
+        Arc::new(FakeContexts {
+            manifest: manifest(agents),
+        }),
+        live,
+        input as Arc<dyn InputMediator>,
+        Arc::clone(&queue) as Arc<dyn AgentQueueSnapshot>,
+    )
+    .with_background_tasks(Arc::clone(&store) as Arc<dyn BackgroundTaskStore>);
+    BackgroundFixture {
+        usecase,
+        queue,
+        store,
+        project: project(),
+    }
+}
+
+fn background_task(
+    id: u128,
+    project_id: ProjectId,
+    owner: AgentId,
+    created_at_ms: u64,
+    state: BackgroundTaskState,
+    delivered: bool,
+) -> BackgroundTask {
+    let base = BackgroundTask::new(
+        task_id(id),
+        project_id,
+        owner,
+        BackgroundTaskKind::Command {
+            label: format!("task-{id}"),
+        },
+        BackgroundTaskWakePolicy::WakeOwner,
+        created_at_ms,
+        None,
+    )
+    .unwrap();
+    match state {
+        BackgroundTaskState::Queued => base,
+        BackgroundTaskState::Running | BackgroundTaskState::Waiting => {
+            base.transition(state, created_at_ms + 10).unwrap()
+        }
+        BackgroundTaskState::Completed
+        | BackgroundTaskState::Failed
+        | BackgroundTaskState::Cancelled
+        | BackgroundTaskState::Expired => {
+            let result = match state {
+                BackgroundTaskState::Completed => BackgroundTaskResult::Success {
+                    finished_at_ms: created_at_ms + 20,
+                    exit_code: Some(0),
+                    summary: "done".to_owned(),
+                    stdout_tail: Some("stdout".to_owned()),
+                    stderr_tail: None,
+                },
+                BackgroundTaskState::Failed => BackgroundTaskResult::Failure {
+                    finished_at_ms: created_at_ms + 20,
+                    exit_code: Some(2),
+                    error: "failed".to_owned(),
+                    stdout_tail: Some("out".to_owned()),
+                    stderr_tail: Some("err".to_owned()),
+                },
+                BackgroundTaskState::Cancelled => BackgroundTaskResult::Cancelled {
+                    finished_at_ms: created_at_ms + 20,
+                    reason: "cancelled".to_owned(),
+                },
+                BackgroundTaskState::Expired => BackgroundTaskResult::Expired {
+                    finished_at_ms: created_at_ms + 20,
+                    reason: "expired".to_owned(),
+                },
+                BackgroundTaskState::Queued
+                | BackgroundTaskState::Running
+                | BackgroundTaskState::Waiting => unreachable!(),
+            };
+            let running = base
+                .transition(BackgroundTaskState::Running, created_at_ms + 10)
+                .unwrap();
+            let completed = running.complete(result).unwrap();
+            if delivered {
+                completed.mark_completion_delivered().unwrap()
+            } else {
+                completed
+            }
+        }
+    }
+}
+
 /// Fixture wiring the best-effort conversation sources (handoff + log) onto the
 /// read model, exposing the fake stores so each test configures their outcomes.
 fn conv_fixture(agents: &[Agent]) -> ConvFixture {
@@ -539,6 +745,123 @@ async fn workstate_agent_without_queue_has_no_tickets() {
     assert!(out.agents[0].tickets.is_empty());
 }
 
+#[tokio::test]
+async fn workstate_projects_open_and_undelivered_background_tasks_by_agent() {
+    let a = agent(10, "alpha");
+    let b = agent(20, "beta");
+    let f = background_fixture(&[a.clone(), b.clone()]);
+    let other_project = ProjectId::from_uuid(Uuid::from_u128(999));
+    f.store.set_tasks(vec![
+        background_task(
+            2,
+            f.project.id,
+            a.id,
+            2_000,
+            BackgroundTaskState::Running,
+            false,
+        ),
+        background_task(
+            1,
+            f.project.id,
+            a.id,
+            1_000,
+            BackgroundTaskState::Failed,
+            false,
+        ),
+        background_task(
+            3,
+            f.project.id,
+            a.id,
+            3_000,
+            BackgroundTaskState::Completed,
+            true,
+        ),
+        background_task(
+            4,
+            other_project,
+            a.id,
+            4_000,
+            BackgroundTaskState::Running,
+            false,
+        ),
+    ]);
+
+    let out = f
+        .usecase
+        .execute(GetProjectWorkStateInput { project: f.project })
+        .await
+        .unwrap();
+
+    let alpha_tasks = &out.agents[0].background_tasks;
+    assert_eq!(alpha_tasks.len(), 2);
+    assert_eq!(alpha_tasks[0].task_id, task_id(1));
+    assert_eq!(alpha_tasks[0].state, BackgroundTaskState::Failed);
+    assert_eq!(alpha_tasks[0].exit_code, Some(2));
+    assert_eq!(alpha_tasks[0].summary.as_deref(), Some("failed"));
+    assert_eq!(alpha_tasks[0].stdout_tail.as_deref(), Some("out"));
+    assert_eq!(alpha_tasks[0].stderr_tail.as_deref(), Some("err"));
+    assert_eq!(alpha_tasks[1].task_id, task_id(2));
+    assert_eq!(alpha_tasks[1].state, BackgroundTaskState::Running);
+    assert!(out.agents[1].background_tasks.is_empty());
+}
+
+#[tokio::test]
+async fn workstate_background_task_store_error_degrades_without_dropping_tickets() {
+    let a = agent(10, "alpha");
+    let f = background_fixture(std::slice::from_ref(&a));
+    f.queue.set(
+        a.id,
+        vec![snapshot(1, 0, InputSource::Human, "Human", "queued")],
+    );
+    f.store.set_tasks(vec![background_task(
+        1,
+        f.project.id,
+        a.id,
+        1_000,
+        BackgroundTaskState::Running,
+        false,
+    )]);
+    f.store.fail_open();
+
+    let out = f
+        .usecase
+        .execute(GetProjectWorkStateInput { project: f.project })
+        .await
+        .unwrap();
+
+    assert!(out.agents[0].background_tasks.is_empty());
+    assert_eq!(out.agents[0].tickets.len(), 1);
+    assert_eq!(out.agents[0].tickets[0].ticket_id, ticket_id(1));
+}
+
+#[tokio::test]
+async fn workstate_undelivered_completion_error_degrades_background_tasks_only() {
+    let a = agent(10, "alpha");
+    let f = background_fixture(std::slice::from_ref(&a));
+    f.queue.set(
+        a.id,
+        vec![snapshot(1, 0, InputSource::Human, "Human", "queued")],
+    );
+    f.store.set_tasks(vec![background_task(
+        1,
+        f.project.id,
+        a.id,
+        1_000,
+        BackgroundTaskState::Running,
+        false,
+    )]);
+    f.store.fail_undelivered();
+
+    let out = f
+        .usecase
+        .execute(GetProjectWorkStateInput { project: f.project })
+        .await
+        .unwrap();
+
+    assert!(out.agents[0].background_tasks.is_empty());
+    assert_eq!(out.agents[0].tickets.len(), 1);
+}
+
 #[tokio::test]
 async fn workstate_lists_two_tickets_in_fifo_order() {
     let a = agent(10, "alpha");

crates/domain/src/lib.rs

@@ -181,8 +181,7 @@ pub use ports::{
     EmbedderPromptStore, EventBus, EventStream, ExitStatus, FileSystem, FsError, GitCommitInfo,
     GitError, GitFileStatus, GitPort, GraphCommit, IdGenerator, IssueNumberAllocator, IssueStore,
     IssueStoreError, LiveStateStore, MemoryError, MemoryQuery, MemoryRecall, MemoryStore, Output,
-    OutputStream, PermissionStore, PreparedContext,
+    OutputStream, PermissionStore, PreparedContext, ProcessError, ProcessSpawner, ProfileStore,
-    ProcessError, ProcessSpawner, ProfileStore, ProjectStore, PtyError, PtyHandle, PtyPort,
+    ProjectStore, PtyError, PtyHandle, PtyPort, RemoteError, RemoteHost, RemotePath, RuntimeError,
-    RemoteError, RemoteHost, RemotePath, RuntimeError, ScheduledTask, Scheduler, SpawnSpec,
+    ScheduledTask, Scheduler, SpawnSpec, StoreError, TemplateStore,
-    StoreError, TemplateStore,
 };

crates/infrastructure/src/background_task/mod.rs

@@ -17,6 +17,7 @@ mod tail;
 pub use runner::CommandBackgroundRunner;
 pub use sink::{
     start_background_ready_inbox_bridge, BackgroundCompletionSink, BackgroundCompletionSinkError,
-    BackgroundCompletionSinkOutcome, BackgroundReadyInboxBridgeHandle, BackgroundTaskReadyToDeliver,
+    BackgroundCompletionSinkOutcome, BackgroundReadyInboxBridgeHandle,
+    BackgroundTaskReadyToDeliver,
 };
 pub use tail::{bounded_tail, tail_cap_bytes, BoundedTail};

crates/infrastructure/src/background_task/runner.rs

@@ -170,7 +170,10 @@ impl CommandBackgroundRunner {
             }
         };
 
-        running.lock().expect("runner registry poisoned").remove(&task_id);
+        running
+            .lock()
+            .expect("runner registry poisoned")
+            .remove(&task_id);
         let _ = completion_tx.send(BackgroundTaskCompletion { task_id, result });
     }
 
@@ -213,10 +216,7 @@ impl CommandBackgroundRunner {
         let Ok(stream) = pty.subscribe_output(&handle) else {
             return;
         };
-        let _ = tokio::task::spawn_blocking(move || {
+        let _ = tokio::task::spawn_blocking(move || for _chunk in stream {}).await;
-            for _chunk in stream {}
-        })
-        .await;
     }
 }
 

crates/infrastructure/src/input/mod.rs

@@ -1077,10 +1077,7 @@ impl AgentInbox for MediatedInbox {
         let item_id = item.id;
         let ticket = inbox_item_to_ticket(&item);
         self.inbox_items().insert(item_id, item);
-        let _pending = match ticket.source {
+        let _pending = self.mailbox.enqueue(agent, ticket);
-            domain::input::InputSource::Human => self.enqueue(agent, ticket),
-            domain::input::InputSource::Agent { .. } => self.enqueue_silent(agent, ticket),
-        };
         let depth = self.mailbox.pending(&agent);
         if let Some(events) = &self.tracker.events {
             events.publish(DomainEvent::AgentInboxQueued {
@@ -1347,6 +1344,36 @@ mod tests {
         assert_eq!(inbox.mailbox.pending(&a), 1);
     }
 
+    #[test]
+    fn enqueue_message_queues_inbox_item_without_starting_turn() {
+        let bus = Arc::new(RecordingBus::default());
+        let inbox = MediatedInbox::new(Arc::new(InMemoryMailbox::new()), Arc::new(FixedClock(1)))
+            .with_events(Arc::clone(&bus) as Arc<dyn EventBus>);
+        let a = agent(1);
+        let task_id = domain::TaskId::from_uuid(uuid::Uuid::from_u128(42));
+        let item = domain::InboxItem {
+            id: TicketId::from_uuid(uuid::Uuid::from_u128(10)),
+            agent_id: a,
+            source: InboxSource::BackgroundTask { task_id },
+            kind: domain::InboxItemKind::BackgroundCompletion,
+            body: "Background task completed.".to_owned(),
+            created_at_ms: 1,
+            correlation_id: Some(task_id.to_string()),
+        };
+
+        let receipt = inbox.enqueue_message(a, item.clone()).unwrap();
+
+        assert_eq!(receipt.status, InboxReceiptStatus::Queued);
+        assert_eq!(inbox.busy_state(a), AgentBusyState::Idle);
+        assert_eq!(inbox.mailbox.pending(&a), 1);
+        assert!(
+            bus.busy_events().is_empty(),
+            "inbox enqueue must not start a mediated turn"
+        );
+        assert_eq!(inbox.dequeue_next(a), Some(item));
+        assert_eq!(inbox.mailbox.pending(&a), 0);
+    }
+
     #[test]
     fn delegation_ready_carries_bound_submit_config() {
         let bus = Arc::new(RecordingBus::default());

crates/infrastructure/src/lib.rs

@@ -40,8 +40,9 @@ pub mod timeparse;
 
 pub use background_task::{
     bounded_tail, start_background_ready_inbox_bridge, tail_cap_bytes, BackgroundCompletionSink,
-    BackgroundCompletionSinkError, BackgroundCompletionSinkOutcome, BackgroundReadyInboxBridgeHandle,
+    BackgroundCompletionSinkError, BackgroundCompletionSinkOutcome,
-    BackgroundTaskReadyToDeliver, BoundedTail, CommandBackgroundRunner,
+    BackgroundReadyInboxBridgeHandle, BackgroundTaskReadyToDeliver, BoundedTail,
+    CommandBackgroundRunner,
 };
 pub use clock::SystemClock;
 pub use conversation::InMemoryConversationRegistry;

frontend/src/adapters/workStateNormalization.ts

@@ -89,6 +89,8 @@ function normalizeBackgroundStatus(
   if (raw === "cancelled" || raw === "canceled" || raw === "expired") return "cancelled";
   if (raw === "running" || raw === "started") return "running";
   if (raw === "delivered") return "delivered";
+  // Backend `queued`/`waiting` collapse to the cancellable "pending" bucket.
+  if (raw === "queued" || raw === "waiting") return "pending";
   return "pending";
 }
 
@@ -107,7 +109,7 @@ function normalizeBackgroundTask(
     exitCode: nullableNumber(task.exitCode),
     stdoutTail: nullableString(task.stdoutTail),
     stderrTail: nullableString(task.stderrTail),
-    finishedAtMs: nullableNumber(task.finishedAtMs),
+    updatedAtMs: numberValue(task.updatedAtMs),
   };
 }
 

frontend/src/domain/index.ts

@@ -252,7 +252,8 @@ export interface BackgroundCompletion {
   exitCode: number | null;
   stdoutTail: string | null;
   stderrTail: string | null;
-  finishedAtMs: number | null;
+  /** Last-update timestamp (epoch ms); chronological ordering key. */
+  updatedAtMs: number;
 }
 
 /** One item currently pending in an agent's inbox. */

frontend/src/features/workstate/ProjectWorkStatePanel.tsx

@@ -451,11 +451,9 @@ function AgentRow({
   const busy = busyState.state === "busy";
   const tickets = [...(agent.tickets ?? [])].sort((a, b) => a.position - b.position);
   const inbox = [...(agent.inbox ?? [])].sort((a, b) => a.createdAtMs - b.createdAtMs);
-  const backgroundTasks = [...(agent.backgroundTasks ?? [])].sort((a, b) => {
+  const backgroundTasks = [...(agent.backgroundTasks ?? [])].sort(
-    const aDone = a.finishedAtMs ?? 0;
+    (a, b) => b.updatedAtMs - a.updatedAtMs || a.taskId.localeCompare(b.taskId),
-    const bDone = b.finishedAtMs ?? 0;
+  );
-    return bDone - aDone || a.taskId.localeCompare(b.taskId);
-  });
   const inboxDepth = Math.max(agent.inboxDepth ?? 0, inbox.length, tickets.length);
   const visibleNodeIds = new Set(visibleLeaves.map((leaf) => leaf.id));
   const liveVisible = live && visibleNodeIds.has(agent.live!.nodeId);

frontend/src/features/workstate/workstate.test.tsx

@@ -176,6 +176,89 @@ describe("ProjectWorkStatePanel", () => {
     );
   });
 
+  it("normalizes the real backend background-task payload shape", async () => {
+    // Mirrors AgentBackgroundTaskStateDto (crates/app-tauri/src/dto.rs): camelCase,
+    // `state` (not `status`), optional exitCode/summary/stdoutTail/stderrTail omitted
+    // when absent, createdAtMs/updatedAtMs present, NO ownerAgentId/projectId/finishedAtMs.
+    const workState = new MockWorkStateGateway();
+    workState._setProjectWorkState(PROJECT_ID, {
+      agents: [
+        {
+          agentId: "agent-bg",
+          name: "Runner",
+          profileId: "codex",
+          busy: { state: "idle" },
+          backgroundTasks: [
+            {
+              taskId: "task-waiting-1",
+              kind: "command",
+              state: "waiting",
+              createdAtMs: 10,
+              updatedAtMs: 11,
+            },
+            {
+              taskId: "task-queued-1",
+              kind: "headlessRendezvous",
+              state: "queued",
+              createdAtMs: 12,
+              updatedAtMs: 13,
+            },
+            {
+              taskId: "task-failed-1",
+              kind: "command",
+              state: "failed",
+              exitCode: 1,
+              stderrTail: "boom",
+              createdAtMs: 14,
+              updatedAtMs: 15,
+            },
+            {
+              taskId: "task-expired-1",
+              kind: "sessionResume",
+              state: "expired",
+              createdAtMs: 16,
+              updatedAtMs: 17,
+            },
+          ],
+        },
+      ],
+    });
+
+    // Adapter-level assertion: locks the mapping against the real payload.
+    const state = await workState.getProjectWorkState(PROJECT_ID);
+    const tasks = state.agents[0]?.backgroundTasks ?? [];
+    expect(tasks.map((t) => [t.taskId, t.status])).toEqual([
+      ["task-waiting-1", "pending"],
+      ["task-queued-1", "pending"],
+      ["task-failed-1", "failed"],
+      ["task-expired-1", "cancelled"],
+    ]);
+    // Optional fields omitted by the backend normalize to null (not undefined/NaN).
+    expect(tasks[0]?.exitCode).toBeNull();
+    expect(tasks[0]?.stdoutTail).toBeNull();
+    expect(tasks[2]?.stderrTail).toBe("boom");
+    // updatedAtMs (backend-emitted) is carried through for chronological ordering.
+    expect(tasks.map((t) => t.updatedAtMs)).toEqual([11, 13, 15, 17]);
+
+    renderPanel(workState);
+
+    const list = await screen.findByLabelText("Runner background tasks");
+    const cancelButtons = within(list).getAllByRole("button", { name: "Cancel" });
+    const retryButtons = within(list).getAllByRole("button", { name: "Retry" });
+    // waiting + queued are cancellable; failed + expired are retryable.
+    expect(cancelButtons.filter((b) => !(b as HTMLButtonElement).disabled)).toHaveLength(2);
+    expect(retryButtons.filter((b) => !(b as HTMLButtonElement).disabled)).toHaveLength(2);
+
+    // Rows are ordered most-recently-updated first (updatedAtMs desc), taskId as
+    // the deterministic tiebreak — locks the fix for the dead finishedAtMs sort.
+    const text = list.textContent ?? "";
+    const order = ["task-exp", "task-fai", "task-que", "task-wai"].map((id) =>
+      text.indexOf(id),
+    );
+    expect(order).toEqual([...order].sort((a, b) => a - b));
+    expect(order.every((i) => i >= 0)).toBe(true);
+  });
+
   it("renders a legacy agent without tickets", async () => {
     const workState = new MockWorkStateGateway();
     workState._setProjectWorkState(PROJECT_ID, {