feat(workstate): read-model live-state minimal des conversations/délégations (Lot A backend)

Introduit le module application `workstate` (modèle de read-model live + snapshots
des conversations/délégations en cours) et l'expose via la couche terminal
(exports mod/registry). Câble la surface Tauri : DTO, commande et state pour
exposer le live-state au frontend (lib + state + commands), avec tests.

QA verte. Réserve environnementale non bloquante : tests loopback socket Unix
réels non exécutables en sandbox (UnixListener::bind PermissionDenied),
alternatives avec skips vertes.

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

crates/application/src/lib.rs

@@ -28,6 +28,7 @@ pub mod skill;
 pub mod template;
 pub mod terminal;
 pub mod window;
+pub mod workstate;
 
 pub use agent::{
     drain_with_readiness, drain_with_readiness_outcome, reference_profile_id, reference_profiles,
@@ -111,8 +112,13 @@ pub use template::{
     UpdateTemplateOutput,
 };
 pub use terminal::{
-    CloseTerminal, CloseTerminalInput, CloseTerminalOutput, LiveAgentRegistry, LiveSessions,
-    OpenTerminal, OpenTerminalInput, OpenTerminalOutput, ResizeTerminal, ResizeTerminalInput,
-    StructuredSessions, TerminalSessions, WriteToTerminal, WriteToTerminalInput,
+    CloseTerminal, CloseTerminalInput, CloseTerminalOutput, LiveAgentRegistry, LiveSessionKind,
+    LiveSessionSnapshot, LiveSessions, OpenTerminal, OpenTerminalInput, OpenTerminalOutput,
+    ResizeTerminal, ResizeTerminalInput, StructuredSessions, TerminalSessions, WriteToTerminal,
+    WriteToTerminalInput,
 };
 pub use window::{MoveTabToNewWindow, MoveTabToNewWindowInput, MoveTabToNewWindowOutput};
+pub use workstate::{
+    AgentWorkState, GetProjectWorkState, GetProjectWorkStateInput, LiveWorkSession,
+    ProjectWorkState,
+};

crates/application/src/terminal/mod.rs

@@ -28,7 +28,10 @@
 mod registry;
 mod usecases;
 
-pub use registry::{LiveAgentRegistry, LiveSessions, StructuredSessions, TerminalSessions};
+pub use registry::{
+    LiveAgentRegistry, LiveSessionKind, LiveSessionSnapshot, LiveSessions, StructuredSessions,
+    TerminalSessions,
+};
 pub use usecases::{
     CloseTerminal, CloseTerminalInput, CloseTerminalOutput, OpenTerminal, OpenTerminalInput,
     OpenTerminalOutput, ResizeTerminal, ResizeTerminalInput, WriteToTerminal, WriteToTerminalInput,

crates/application/src/terminal/registry.rs

@@ -13,6 +13,28 @@ use domain::conversation::ConversationId;
 use domain::ports::{AgentSession, PtyHandle};
 use domain::{AgentId, NodeId, SessionId, SessionKind, TerminalSession};
 
+/// Runtime family of a live agent session.
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub enum LiveSessionKind {
+    /// Raw PTY-backed CLI session.
+    Pty,
+    /// Structured agent-session backend.
+    Structured,
+}
+
+/// Read-only coordinates of one live agent session.
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub struct LiveSessionSnapshot {
+    /// The agent owning the live session.
+    pub agent_id: AgentId,
+    /// The layout node currently hosting the session view.
+    pub node_id: NodeId,
+    /// The live session id.
+    pub session_id: SessionId,
+    /// Which runtime registry owns the session.
+    pub kind: LiveSessionKind,
+}
+
 /// A registered, live terminal: its PTY handle plus the domain snapshot.
 #[derive(Debug, Clone)]
 struct Entry {
@@ -516,6 +538,31 @@ impl LiveSessions {
         all.extend(self.structured.live_agents());
         all
     }
+
+    /// Tous les agents vivants avec le type de registre source (PTY puis structuré).
+    #[must_use]
+    pub fn live_agent_snapshots(&self) -> Vec<LiveSessionSnapshot> {
+        let mut all: Vec<LiveSessionSnapshot> = self
+            .pty
+            .live_agents()
+            .into_iter()
+            .map(|(agent_id, node_id, session_id)| LiveSessionSnapshot {
+                agent_id,
+                node_id,
+                session_id,
+                kind: LiveSessionKind::Pty,
+            })
+            .collect();
+        all.extend(self.structured.live_agents().into_iter().map(
+            |(agent_id, node_id, session_id)| LiveSessionSnapshot {
+                agent_id,
+                node_id,
+                session_id,
+                kind: LiveSessionKind::Structured,
+            },
+        ));
+        all
+    }
 }
 
 impl LiveAgentRegistry for LiveSessions {

crates/application/src/workstate/mod.rs

@@ -0,0 +1,124 @@
+//! Read-only project work-state read model.
+//!
+//! This module composes existing runtime state only: the project agent manifest,
+//! live session registries and the input mediator busy state. It performs no I/O
+//! beyond loading the manifest through the existing context store and creates no
+//! durable projection.
+
+use std::collections::HashMap;
+use std::sync::Arc;
+
+use domain::input::AgentBusyState;
+use domain::ports::AgentContextStore;
+use domain::{AgentId, InputMediator, NodeId, ProfileId, Project, SessionId};
+
+use crate::error::AppError;
+use crate::terminal::{LiveSessionKind, LiveSessionSnapshot, LiveSessions};
+
+/// Input for [`GetProjectWorkState::execute`].
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub struct GetProjectWorkStateInput {
+    /// Project whose manifest provides the agent order and boundary.
+    pub project: Project,
+}
+
+/// Read model for a project's current agent work state.
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub struct ProjectWorkState {
+    /// Agents in manifest order.
+    pub agents: Vec<AgentWorkState>,
+}
+
+/// Read model for one manifest agent.
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub struct AgentWorkState {
+    /// Agent id.
+    pub agent_id: AgentId,
+    /// Agent display name.
+    pub name: String,
+    /// Runtime profile id currently assigned to the agent.
+    pub profile_id: ProfileId,
+    /// Current live session, if the agent is live.
+    pub live: Option<LiveWorkSession>,
+    /// Current FIFO/busy state.
+    pub busy: AgentBusyState,
+}
+
+/// Live session coordinates exposed by the work-state read model.
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+pub struct LiveWorkSession {
+    /// The layout node currently hosting the session view.
+    pub node_id: NodeId,
+    /// The live session id.
+    pub session_id: SessionId,
+    /// Runtime family that owns the session.
+    pub kind: LiveSessionKind,
+}
+
+/// Read-only use case aggregating manifest agents with live and busy state.
+pub struct GetProjectWorkState {
+    contexts: Arc<dyn AgentContextStore>,
+    live: Arc<LiveSessions>,
+    input: Arc<dyn InputMediator>,
+}
+
+impl GetProjectWorkState {
+    /// Builds the read-model use case from existing stores/registries.
+    #[must_use]
+    pub fn new(
+        contexts: Arc<dyn AgentContextStore>,
+        live: Arc<LiveSessions>,
+        input: Arc<dyn InputMediator>,
+    ) -> Self {
+        Self {
+            contexts,
+            live,
+            input,
+        }
+    }
+
+    /// Executes the read-only aggregation.
+    ///
+    /// # Errors
+    /// - [`AppError::Store`] when the manifest cannot be loaded,
+    /// - [`AppError::Invalid`] if a manifest entry violates agent invariants.
+    pub async fn execute(
+        &self,
+        input: GetProjectWorkStateInput,
+    ) -> 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
+            .entries
+            .iter()
+            .map(|entry| {
+                let agent = entry
+                    .to_agent()
+                    .map_err(|err| AppError::Invalid(err.to_string()))?;
+                let live = live_by_agent
+                    .get(&agent.id)
+                    .map(|snapshot| LiveWorkSession {
+                        node_id: snapshot.node_id,
+                        session_id: snapshot.session_id,
+                        kind: snapshot.kind,
+                    });
+                Ok(AgentWorkState {
+                    agent_id: agent.id,
+                    name: agent.name,
+                    profile_id: agent.profile_id,
+                    live,
+                    busy: self.input.busy_state(agent.id),
+                })
+            })
+            .collect::<Result<Vec<_>, AppError>>()?;
+        Ok(ProjectWorkState { agents })
+    }
+}
+
+fn live_by_agent(snapshots: Vec<LiveSessionSnapshot>) -> HashMap<AgentId, LiveSessionSnapshot> {
+    let mut out = HashMap::new();
+    for snapshot in snapshots {
+        out.entry(snapshot.agent_id).or_insert(snapshot);
+    }
+    out
+}