diff --git a/frontend/src/features/tickets/useTicketAssistant.test.tsx b/frontend/src/features/tickets/useTicketAssistant.test.tsx
index 04ef025b..4f014363 100644
--- a/frontend/src/features/tickets/useTicketAssistant.test.tsx
+++ b/frontend/src/features/tickets/useTicketAssistant.test.tsx
@@ -94,6 +94,32 @@ describe("useTicketAssistant — ticket #60 (no-reply terminal)", () => {
     expect(last.role).toBe("assistant");
     expect(last.pending).toBeFalsy();
     expect(last.text).toContain("Le modèle n'a renvoyé aucune réponse.");
+    expect(last.text).toContain("Échec sans contenu");
+  });
+
+  it("preserves streamed partial content when the terminal error says finalization failed", async () => {
+    const gw = new FakeTicketGateway();
+    const { result } = await openAndSend(gw);
+
+    act(() => {
+      gw.captured!({ kind: "textDelta", text: "Réponse partielle utile." });
+    });
+    act(() => {
+      gw.captured!({
+        kind: "error",
+        message: "La réponse du modèle n'a pas pu être finalisée.",
+      });
+    });
+
+    await waitFor(() => expect(result.current.busy).toBe(false));
+    const last = result.current.turns.at(-1)!;
+    expect(last.role).toBe("assistant");
+    expect(last.pending).toBeFalsy();
+    expect(last.text).toContain("Réponse partielle utile.");
+    expect(last.text).toContain("Réponse partielle — fin non reçue.");
+    expect(last.text).toContain(
+      "demandez à l'assistant de continuer à partir de la réponse partielle",
+    );
   });
 
   it("a non-empty final renders the answer and clears busy (nominal, no regression)", async () => {
diff --git a/frontend/src/features/tickets/useTicketAssistant.ts b/frontend/src/features/tickets/useTicketAssistant.ts
index 029cbb97..16c5852a 100644
--- a/frontend/src/features/tickets/useTicketAssistant.ts
+++ b/frontend/src/features/tickets/useTicketAssistant.ts
@@ -52,6 +52,31 @@ function describe(e: unknown): string {
   return String(e);
 }
 
+function assistantFailureText(message: string, partialText: string): string {
+  const partial = partialText.trim();
+  const normalized = message.toLowerCase();
+  if (!partial) {
+    return [
+      `Échec sans contenu — ${message}`,
+      "Reprise: renvoyez le message ou reformulez-le en plusieurs parties.",
+    ].join("\n");
+  }
+
+  const label =
+    normalized.includes("tronqu") || normalized.includes("truncat")
+      ? "Réponse tronquée."
+      : normalized.includes("finalis") || normalized.includes("fin ")
+        ? "Réponse partielle — fin non reçue."
+        : "Réponse partielle — échec transitoire possible.";
+  return [
+    partialText,
+    "",
+    `Échec — ${label}`,
+    message,
+    "Reprise: demandez à l'assistant de continuer à partir de la réponse partielle ci-dessus.",
+  ].join("\n");
+}
+
 export function useTicketAssistant(
   projectId: string,
   issueRef: string,
@@ -136,12 +161,11 @@ export function useTicketAssistant(
             // Best-effort inline activity badge.
             next[i] = { ...next[i], text: `${next[i].text}\n· ${chunk.label}` };
           } else if (chunk.kind === "error") {
-            // Terminal fallback (ticket #60): the model returned no usable answer.
-            // Freeze the turn with the readable explanation so the bubble is never
-            // left empty and pending — the assistant no longer hangs silently.
+            // Terminal fallback: preserve any streamed content, then classify the
+            // failure so a partial answer is not hidden by the terminal error.
             next[i] = {
               role: "assistant",
-              text: `⚠️ ${chunk.message}`,
+              text: assistantFailureText(chunk.message, next[i].text),
               pending: false,
             };
           } else if (chunk.kind === "final") {