merge(session): finalisation Codex — réponse non finalisée sur session Codex — #240 (QA verte)

crates/infrastructure/src/session/codex.rs

@@ -699,17 +699,21 @@ impl CodexExecSession {
 }
 
 fn event_supersedes_pending_final(event: &ReplyEvent) -> bool {
-    !matches!(
-        event,
-        ReplyEvent::Heartbeat
-            | ReplyEvent::RateLimited { .. }
-            | ReplyEvent::Progress {
-                progress: ReplyProgress {
-                    kind: ReplyProgressKind::Turn,
-                    ..
-                }
-            }
+    match event {
+        ReplyEvent::Progress { progress } => {
+            progress.kind != ReplyProgressKind::Turn
+                && matches!(
+                    progress.stage,
+                    ReplyProgressStage::Started | ReplyProgressStage::Delta
                 )
+        }
+        ReplyEvent::ToolActivity { .. } | ReplyEvent::Error { .. } => true,
+        ReplyEvent::Final { .. }
+        | ReplyEvent::TextDelta { .. }
+        | ReplyEvent::Announcement { .. }
+        | ReplyEvent::Heartbeat
+        | ReplyEvent::RateLimited { .. } => false,
+    }
 }
 
 fn agent_message_progress_from_line(line: &str) -> Result<Option<ReplyEvent>, AgentSessionError> {

crates/infrastructure/src/session/mod.rs

@@ -1385,6 +1385,41 @@ mod tests {
         );
     }
 
+    #[tokio::test]
+    async fn codex_agent_message_survives_late_completed_item_as_final() {
+        let fake = FakeCli::printing(&[
+            r#"{"type":"thread.started","thread_id":"c"}"#,
+            r#"{"type":"turn.started"}"#,
+            r#"{"type":"item.completed","item":{"id":"i0","type":"agent_message","text":"réponse exploitable"}}"#,
+            r#"{"type":"item.completed","item":{"id":"i1","type":"reasoning","text":"post-traitement"}}"#,
+            r#"{"type":"turn.completed","usage":{}}"#,
+        ]);
+        let s = CodexExecSession::new(
+            SessionId::new_random(),
+            fake.command(),
+            "/",
+            None,
+            Vec::new(),
+            Vec::new(),
+            None,
+            None,
+        );
+
+        let events: Vec<_> = s.send("x").await.expect("send").collect();
+        let finals: Vec<_> = events
+            .iter()
+            .filter_map(|event| match event {
+                ReplyEvent::Final { content } => Some(content.as_str()),
+                _ => None,
+            })
+            .collect();
+        assert_eq!(
+            finals,
+            vec!["réponse exploitable"],
+            "a late completed Codex item must not erase the last agent_message"
+        );
+    }
+
     #[tokio::test]
     async fn codex_zero_agent_message_has_no_final() {
         let fake = FakeCli::printing(&[

frontend/src/features/agents/CustomAgentChatView.test.tsx

@@ -383,6 +383,7 @@ describe("CustomAgentChatView", () => {
 
       expect(agentBubble).toBeTruthy();
       expect(errorBubble).toBeTruthy();
+      expect(within(errorBubble!).getByText("Session Codex")).toBeTruthy();
       expect(
         within(agentBubble!).getByText(expectedChatTime(firstDeltaReceivedAtMs)),
       ).toBeTruthy();

frontend/src/features/agents/CustomAgentChatView.tsx

@@ -144,6 +144,23 @@ function describeOpenFailure(e: unknown): string {
   return message || "Cause technique non disponible.";
 }
 
+function structuredSessionLabel(
+  adapter: AgentProfile["structuredAdapter"],
+): string | null {
+  switch (adapter) {
+    case "codex":
+      return "Session Codex";
+    case "claude":
+      return "Session Claude";
+    case "openCode":
+      return "Session OpenCode";
+    case "openAiCompatible":
+      return "Session HTTP";
+    default:
+      return null;
+  }
+}
+
 function instrumentationError(e: unknown): Record<string, unknown> {
   if (e && typeof e === "object") {
     const err = e as GatewayError & { name?: string };
@@ -1018,6 +1035,7 @@ export function CustomAgentChatView({
     [agentId, conversationId, projectId],
   );
   const displayTurns = turns;
+  const sessionLabel = structuredSessionLabel(profile.structuredAdapter);
   const [requesterDelegation, setRequesterDelegation] =
     useState<RequesterDelegationState>({ active: false });
 
@@ -2162,6 +2180,7 @@ export function CustomAgentChatView({
               key={index}
               turn={turn}
               requesterName={agentName}
+              sessionLabel={sessionLabel}
               expandedProgressKeys={expandedProgressKeys}
               onToggleProgressExpanded={(key) =>
                 setExpandedProgressKeys((prev) => {
@@ -2352,11 +2371,13 @@ export function CustomAgentChatView({
 function ChatBubble({
   turn,
   requesterName,
+  sessionLabel,
   expandedProgressKeys,
   onToggleProgressExpanded,
 }: {
   turn: ChatTurn;
   requesterName: string;
+  sessionLabel: string | null;
   expandedProgressKeys: Set<string>;
   onToggleProgressExpanded: (key: string) => void;
 }) {
@@ -2406,6 +2427,9 @@ function ChatBubble({
               labelClassName="font-semibold text-danger"
             />
           )}
+          {turn.role === "error" && sessionLabel && (
+            <p className="mb-1 font-medium text-danger/85">{sessionLabel}</p>
+          )}
           {turn.role === "unknown" ? "Chunk inconnu reçu: " : ""}
           <span className="whitespace-pre-wrap break-words">{turn.text}</span>
         </div>