fix(cli): progress agent_message émis en live + anti-doublon running/done par progressId — #187 (QA verte)

- Codex: les items agent_message sont désormais tapés en live comme progress (Message/Delta) dès item.completed, au lieu d'être bufferisés dans pending_final jusqu'à l'événement tool/MCP suivant.
- Corrélation stable progressId (codex:item:<id>) ajoutée sur ReplyProgress, propagée jusqu'au DTO (ReplyProgressDto.progressId) et au frontend ; le ProgressSettler et la vue procèdent par upsert running -> done au lieu d'empiler des lignes dupliquées.
- Tests: chat_bridge (settler par progressId), dto_chat, session codex, CustomAgentChatView (upsert par progressId).

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

@@ -1259,6 +1259,92 @@ describe("CustomAgentChatView", () => {
     expect(screen.getByText("Progress").parentElement?.textContent).toContain("done");
   });
 
+  it("updates message progress by progressId instead of appending running and done rows", 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: "ship progress ids" },
+    });
+    fireEvent.click(screen.getByRole("button", { name: "Envoyer" }));
+    await waitFor(() => expect(emitChunk).not.toBeNull());
+
+    const progress = (stage: "delta" | "completed", text: string) => ({
+      kind: "progress" as const,
+      progress: {
+        progressId: "codex:message:item-1",
+        source: "providerNative" as const,
+        kind: "message" as const,
+        stage,
+        label: "Analyse",
+        text,
+      },
+    });
+
+    act(() => {
+      emitChunk?.(progress("delta", "Lecture du contexte disponible."));
+    });
+
+    expect(screen.getAllByTestId("chat-progress-status")).toHaveLength(1);
+    expect(screen.getByText("Lecture du contexte disponible.")).toBeTruthy();
+    expect(screen.getByText("Progress").parentElement?.textContent).toContain("running");
+
+    act(() => {
+      emitChunk?.(progress("completed", "Contexte lu."));
+    });
+
+    expect(screen.getAllByTestId("chat-progress-status")).toHaveLength(1);
+    expect(screen.queryByText("Lecture du contexte disponible.")).toBeNull();
+    expect(screen.getByText("Contexte lu.")).toBeTruthy();
+    expect(screen.getByText("Progress").parentElement?.textContent).toContain("done");
+  });
+
   it("does not append late progress chunks after the final answer", async () => {
     let emitChunk: ((chunk: unknown) => void) | null = null;
     const agent = {