diff --git a/frontend/src/features/agents/CustomAgentChatView.test.tsx b/frontend/src/features/agents/CustomAgentChatView.test.tsx
index b458f96d..113b1753 100644
--- a/frontend/src/features/agents/CustomAgentChatView.test.tsx
+++ b/frontend/src/features/agents/CustomAgentChatView.test.tsx
@@ -335,6 +335,209 @@ describe("CustomAgentChatView", () => {
     await screen.findByText("done");
   });
 
+  it("renders available pre-MCP progress before the first MCP card", async () => {
+    let emitChunk: ((chunk: unknown) => void) | null = null;
+    const agent = {
+      launchAgentChat: vi.fn(),
+      reattachAgentChat: vi.fn(async (sessionId: string) => ({
+        sessionId,
+        scrollback: [],
+      })),
+      sendAgentChat: vi.fn(
+        (_sessionId: string, _prompt: string, onChunk: (chunk: unknown) => void) =>
+          new Promise<void>((resolve) => {
+            emitChunk = (chunk: unknown) => {
+              onChunk(chunk);
+              if ((chunk as { kind?: string }).kind === "final") resolve();
+            };
+          }),
+      ),
+      cancelAgentChat: vi.fn(async () => {}),
+      closeAgentChat: vi.fn(async () => {}),
+    };
+
+    const { container } = render(
+      <DIProvider
+        gateways={{
+          agent,
+          system: { pickFile: vi.fn(async () => null) },
+        } as unknown as Gateways}
+      >
+        <CustomAgentChatView
+          projectId="project-1"
+          agentId="agent-1"
+          agentName="Worker"
+          profile={profile}
+          cwd="/repo"
+          nodeId="node-1"
+          sessionId="chat-session-1"
+          conversationId="conversation-1"
+          onSessionId={vi.fn()}
+          onConversationId={vi.fn()}
+        />
+      </DIProvider>,
+    );
+
+    await waitFor(() =>
+      expect(agent.reattachAgentChat).toHaveBeenCalledWith(
+        "chat-session-1",
+        expect.any(Function),
+      ),
+    );
+
+    fireEvent.change(screen.getByLabelText(/message CLI custom/), {
+      target: { value: "delegate after intent" },
+    });
+    fireEvent.click(screen.getByRole("button", { name: "Envoyer" }));
+    await waitFor(() => expect(emitChunk).not.toBeNull());
+
+    act(() => {
+      emitChunk?.({
+        kind: "progress",
+        progress: {
+          source: "providerNative",
+          kind: "message",
+          stage: "delta",
+          label: "Intention",
+          text: "Je vais d'abord regarder les outils MCP disponibles.",
+          provider: "codex",
+          nativeEvent: "agent.message.delta",
+        },
+      });
+    });
+
+    expect(
+      screen.getByText("Je vais d'abord regarder les outils MCP disponibles."),
+    ).toBeTruthy();
+    expect(screen.queryByText("idea_ask_agent")).toBeNull();
+
+    act(() => {
+      emitChunk?.({
+        kind: "progress",
+        progress: {
+          source: "ideaLocal",
+          kind: "mcp",
+          stage: "started",
+          label: "idea_ask_agent",
+          toolName: "idea_ask_agent",
+        },
+      });
+    });
+
+    const intent = screen.getByText(
+      "Je vais d'abord regarder les outils MCP disponibles.",
+    );
+    const delegation = screen.getByText("idea_ask_agent");
+    expect(
+      Boolean(intent.compareDocumentPosition(delegation) & Node.DOCUMENT_POSITION_FOLLOWING),
+    ).toBe(true);
+
+    act(() => {
+      emitChunk?.({ kind: "final", content: "done" });
+    });
+    await screen.findByText("done");
+    expect(container.textContent).toContain("Je vais d'abord regarder");
+  });
+
+  it("deduplicates delegated tool progress from tap and authoritative stream", async () => {
+    let emitChunk: ((chunk: unknown) => void) | null = null;
+    const agent = {
+      launchAgentChat: vi.fn(),
+      reattachAgentChat: vi.fn(async (sessionId: string) => ({
+        sessionId,
+        scrollback: [],
+      })),
+      sendAgentChat: vi.fn(
+        (_sessionId: string, _prompt: string, onChunk: (chunk: unknown) => void) =>
+          new Promise<void>((resolve) => {
+            emitChunk = (chunk: unknown) => {
+              onChunk(chunk);
+              if ((chunk as { kind?: string }).kind === "final") resolve();
+            };
+          }),
+      ),
+      cancelAgentChat: vi.fn(async () => {}),
+      closeAgentChat: vi.fn(async () => {}),
+    };
+
+    render(
+      <DIProvider
+        gateways={{
+          agent,
+          system: { pickFile: vi.fn(async () => null) },
+        } as unknown as Gateways}
+      >
+        <CustomAgentChatView
+          projectId="project-1"
+          agentId="agent-1"
+          agentName="Worker"
+          profile={profile}
+          cwd="/repo"
+          nodeId="node-1"
+          sessionId="chat-session-1"
+          conversationId="conversation-1"
+          onSessionId={vi.fn()}
+          onConversationId={vi.fn()}
+        />
+      </DIProvider>,
+    );
+
+    await waitFor(() =>
+      expect(agent.reattachAgentChat).toHaveBeenCalledWith(
+        "chat-session-1",
+        expect.any(Function),
+      ),
+    );
+
+    fireEvent.change(screen.getByLabelText(/message CLI custom/), {
+      target: { value: "delegate once" },
+    });
+    fireEvent.click(screen.getByRole("button", { name: "Envoyer" }));
+    await waitFor(() => expect(emitChunk).not.toBeNull());
+
+    const progress = (source: "providerNative" | "ideaLocal", stage: "started" | "completed") => ({
+      kind: "progress" as const,
+      progress: {
+        source,
+        kind: source === "ideaLocal" ? ("mcp" as const) : ("tool" as const),
+        stage,
+        label: "idea_ask_agent",
+        text: stage === "started" ? "target=QA task=validate" : "reply delivered",
+        provider: source === "providerNative" ? "opencode" : undefined,
+        nativeEvent:
+          source === "providerNative"
+            ? stage === "started"
+              ? "tool_use"
+              : "tool_done"
+            : stage === "started"
+              ? "conversation.item.added"
+              : "conversation.item.done",
+        toolName: "idea_ask_agent",
+      },
+    });
+
+    act(() => {
+      emitChunk?.(progress("providerNative", "started"));
+      emitChunk?.(progress("ideaLocal", "started"));
+      emitChunk?.(progress("providerNative", "completed"));
+      emitChunk?.(progress("ideaLocal", "completed"));
+      emitChunk?.(progress("providerNative", "started"));
+      emitChunk?.(progress("ideaLocal", "started"));
+      emitChunk?.(progress("providerNative", "completed"));
+      emitChunk?.(progress("ideaLocal", "completed"));
+      emitChunk?.({ kind: "final", content: "done" });
+    });
+
+    await screen.findByText("done");
+    expect(screen.getAllByText("Délégation")).toHaveLength(2);
+    expect(screen.getByText("target=QA task=validate")).toBeTruthy();
+    expect(screen.getByText("reply delivered")).toBeTruthy();
+    expect(screen.queryByText("Tool")).toBeNull();
+    await waitFor(() =>
+      expect(screen.queryByRole("status", { name: "Loading" })).toBeNull(),
+    );
+  });
+
   it("stops animating running progress rows once the turn reaches a final chunk", async () => {
     let emitChunk: ((chunk: unknown) => void) | null = null;
     const agent = {
diff --git a/frontend/src/features/agents/CustomAgentChatView.tsx b/frontend/src/features/agents/CustomAgentChatView.tsx
index e13ecc8a..5b8cb14f 100644
--- a/frontend/src/features/agents/CustomAgentChatView.tsx
+++ b/frontend/src/features/agents/CustomAgentChatView.tsx
@@ -47,7 +47,7 @@ type ChatTurn =
   | { role: "user"; text: string; attachments?: string[] }
   | { role: "agent"; text: string; pending?: boolean }
   | { role: "tool"; label: string }
-  | { role: "progress"; progress: ReplyProgress }
+  | { role: "progress"; progress: ReplyProgress; settled?: boolean }
   | { role: "final"; text: string }
   | { role: "error"; text: string }
   | { role: "unknown"; text: string };
@@ -186,27 +186,72 @@ function progressKey(progress: ReplyProgress): string {
   return [
     progress.source,
     progress.kind,
+    progress.stage,
     progress.toolName ?? "",
     progress.label,
     progress.text ?? "",
   ].join("\u0000");
 }
 
+function normalizedProgressToolName(progress: ReplyProgress): string | null {
+  const name = progress.toolName ?? progress.label;
+  const normalized = name.trim().toLowerCase();
+  return normalized || null;
+}
+
+function isDelegationProgress(progress: ReplyProgress): boolean {
+  const name = normalizedProgressToolName(progress);
+  return name === "idea_ask_agent" || name === "idea_ask_agents";
+}
+
+function isToolLikeProgress(progress: ReplyProgress): boolean {
+  return progress.kind === "tool" || progress.kind === "mcp" || isDelegationProgress(progress);
+}
+
+function progressEntityKey(progress: ReplyProgress): string | null {
+  const name = normalizedProgressToolName(progress);
+  if (!name) return null;
+  if (isDelegationProgress(progress)) return `delegation:${name}`;
+  if (progress.kind === "tool" || progress.kind === "mcp") return `tool:${name}`;
+  return null;
+}
+
+function progressStageBucket(progress: ReplyProgress): string {
+  if (!isToolLikeProgress(progress)) return progress.stage;
+  if (progress.stage === "started" || progress.stage === "delta") return "started";
+  if (progress.stage === "completed") return "completed";
+  return "info";
+}
+
+function progressDisplayKey(progress: ReplyProgress): string {
+  const entity = progressEntityKey(progress);
+  if (entity) return `${entity}\u0000${progressStageBucket(progress)}`;
+  return progressKey(progress);
+}
+
 function appendProgress(turns: ChatTurn[], progress: ReplyProgress): ChatTurn[] {
-  const last = turns[turns.length - 1];
+  const key = progressDisplayKey(progress);
   if (
-    last?.role === "progress" &&
-    progressKey(last.progress) === progressKey(progress)
+    turns.some(
+      (turn) => turn.role === "progress" && progressDisplayKey(turn.progress) === key,
+    )
   ) {
-    return [
-      ...turns.slice(0, -1),
-      { role: "progress", progress },
-    ];
+    return turns;
   }
   return [...turns, { role: "progress", progress }];
 }
 
 function completeRunningProgress(turns: ChatTurn[]): ChatTurn[] {
+  const completedEntities = new Set(
+    turns
+      .filter(
+        (turn): turn is Extract<ChatTurn, { role: "progress" }> =>
+          turn.role === "progress" &&
+          progressStageBucket(turn.progress) === "completed" &&
+          Boolean(progressEntityKey(turn.progress)),
+      )
+      .map((turn) => progressEntityKey(turn.progress)),
+  );
   return turns.map((turn) => {
     if (
       turn.role !== "progress" ||
@@ -214,6 +259,10 @@ function completeRunningProgress(turns: ChatTurn[]): ChatTurn[] {
     ) {
       return turn;
     }
+    const entity = progressEntityKey(turn.progress);
+    if (entity && completedEntities.has(entity)) {
+      return { ...turn, settled: true };
+    }
     return {
       ...turn,
       progress: {
@@ -1263,7 +1312,7 @@ function ChatBubble({ turn }: { turn: ChatTurn }) {
     );
   }
   if (turn.role === "progress") {
-    return <ProgressBubble progress={turn.progress} />;
+    return <ProgressBubble progress={turn.progress} settled={turn.settled} />;
   }
   if (turn.role === "final") {
     return (
@@ -1316,11 +1365,6 @@ function ChatBubble({ turn }: { turn: ChatTurn }) {
   );
 }
 
-function isDelegationProgress(progress: ReplyProgress): boolean {
-  const name = (progress.toolName ?? progress.label).toLowerCase();
-  return name === "idea_ask_agent" || name === "idea_ask_agents";
-}
-
 function progressTitle(progress: ReplyProgress): string {
   if (isDelegationProgress(progress)) return "Délégation";
   if (progress.kind === "mcp") return "MCP";
@@ -1365,19 +1409,23 @@ function truncateProgressText(text: string): string {
   return text.length > 140 ? `${text.slice(0, 137)}...` : text;
 }
 
-function ProgressBubble({ progress }: { progress: ReplyProgress }) {
+function ProgressBubble({
+  progress,
+  settled = false,
+}: {
+  progress: ReplyProgress;
+  settled?: boolean;
+}) {
   const title = progressTitle(progress);
   const stage = progressStageLabel(progress.stage);
   const source = progressSourceLabel(progress);
   const detail = progress.text ? truncateProgressText(progress.text) : null;
-  const running = progress.stage === "started" || progress.stage === "delta";
+  const running = !settled && (progress.stage === "started" || progress.stage === "delta");
   return (
     <div
       className={cn(
         "flex min-w-0",
-        progress.kind === "tool" || progress.kind === "mcp" || isDelegationProgress(progress)
-          ? "justify-start pl-7"
-          : "justify-center",
+        isToolLikeProgress(progress) ? "justify-start pl-7" : "justify-center",
       )}
     >
       <div