fix(conversion): 轉檔完成頁「已加入」按鈕不再重複 promote

SuccessView「加到模型庫」按鈕文字依 importedModelId 切換（已加入/加到模型庫），
但 onClick 永遠是 handleImportClick（開 PromoteDialog）→ 已 promote 後再點又
開 dialog 又 promote。

- 按鈕 onClick 改 handleImportButtonClick 分流：importedModelId 有值→
  router.push(/models/{id}) 導航（不再 promote）；空→開 PromoteDialog（現狀）
- aria-label 同步切換（import.aria.done）對齊實際行為
- 後端 PromoteToModels 本有冪等（同 jobID 不重複建），前端 onClick 為防禦層

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

visionA-frontend/src/app/conversion/components/SuccessView.test.tsx

@@ -447,6 +447,83 @@ describe("<SuccessView /> — 加到模型庫", () => {
     const text = btn.textContent ?? "";
     expect(/已加入|Added/.test(text)).toBe(true);
   });
+
+  it("尚未 promote 時點按鈕 → 開 PromoteDialog、不導航", () => {
+    setSucceeded();
+    renderView();
+
+    // 初始無 dialog、無導航
+    expect(screen.queryByTestId("promote-dialog")).toBeNull();
+
+    fireEvent.click(screen.getByTestId("success-import-button"));
+
+    // 開 dialog
+    expect(screen.getByTestId("promote-dialog")).toBeTruthy();
+    // 不導航
+    expect(mockRouterPush).not.toHaveBeenCalled();
+  });
+
+  it("已 promote 後再點按鈕 → 導向 /models/{id}、不再開 dialog、不再 promote", async () => {
+    setSucceeded();
+    const promoteSpy = vi
+      .spyOn(useConversionStore.getState(), "promoteToModels")
+      .mockResolvedValue({ model_id: "m-dup-guard" });
+
+    renderView();
+
+    // 第一次：開 dialog → 確認 → promote 成功
+    fireEvent.click(screen.getByTestId("success-import-button"));
+    fireEvent.click(screen.getByTestId("promote-dialog-confirm"));
+
+    await waitFor(() => {
+      expect(screen.queryByTestId("promote-dialog")).toBeNull();
+    });
+    await waitFor(() => {
+      expect(promoteSpy).toHaveBeenCalledTimes(1);
+    });
+
+    // 按鈕已切「已加入」狀態
+    const btn = screen.getByTestId("success-import-button");
+    expect(/已加入|Added/.test(btn.textContent ?? "")).toBe(true);
+
+    // 第二次點同一顆按鈕 → 應只導航、不再開 dialog、不再 promote
+    fireEvent.click(btn);
+
+    // 不再開 PromoteDialog
+    expect(screen.queryByTestId("promote-dialog")).toBeNull();
+    // promote 仍然只被呼叫過一次（沒有重複 promote）
+    expect(promoteSpy).toHaveBeenCalledTimes(1);
+    // 導向模型詳細頁
+    expect(mockRouterPush).toHaveBeenCalledWith("/models/m-dup-guard");
+  });
+
+  it("已 promote 後按鈕 aria-label 切成 done 文案（語意為前往查看）", async () => {
+    setSucceeded();
+    vi.spyOn(useConversionStore.getState(), "promoteToModels").mockResolvedValue(
+      { model_id: "m-aria" },
+    );
+
+    renderView();
+
+    // promote 前：aria-label 為 cta（含「對話框 / dialog」語意）
+    const btnBefore = screen.getByTestId("success-import-button");
+    const ariaBefore = btnBefore.getAttribute("aria-label") ?? "";
+    expect(/對話框|dialog/i.test(ariaBefore)).toBe(true);
+
+    // 執行 promote
+    fireEvent.click(btnBefore);
+    fireEvent.click(screen.getByTestId("promote-dialog-confirm"));
+    await waitFor(() => {
+      expect(screen.queryByTestId("promote-dialog")).toBeNull();
+    });
+
+    // promote 後：aria-label 改為 done（語意為前往查看、不再是開對話框）
+    const ariaAfter =
+      screen.getByTestId("success-import-button").getAttribute("aria-label") ??
+      "";
+    expect(/前往查看|open the model|detail/i.test(ariaAfter)).toBe(true);
+    expect(/對話框|dialog/i.test(ariaAfter)).toBe(false);
+  });
 });
 
 /* -------------------------------------------------------------------------- */

visionA-frontend/src/app/conversion/components/SuccessView.tsx

@@ -292,6 +292,20 @@ function SuccessViewInner({
     setPromoteOpen(true);
   };
 
+  /**
+   * 「加到模型庫」按鈕的點擊行為依 importedModelId 分流：
+   *   - 尚未 promote（importedModelId 為空）→ 開 PromoteDialog（handleImportClick）
+   *   - 已 promote（importedModelId 有值，文字顯示「已加入（前往查看）」）→ 直接導向
+   *     /models/{id}，**不再開 dialog、不再 promote**（修：重複點會重複 promote 的 bug）
+   */
+  const handleImportButtonClick = () => {
+    if (importedModelId) {
+      router.push(`/models/${importedModelId}`);
+      return;
+    }
+    handleImportClick();
+  };
+
   const handlePromoteSuccess = (modelId: string) => {
     setImportedModelId(modelId);
     // 對齊 wireframe §7.1：toast「已加入模型庫」+「前往模型庫」連結
@@ -419,9 +433,13 @@ function SuccessViewInner({
             type="button"
             variant="default"
             size="lg"
-            onClick={handleImportClick}
+            onClick={handleImportButtonClick}
             disabled={isExpired}
-            aria-label={t("conversion.success.import.aria.cta")}
+            aria-label={
+              importedModelId
+                ? t("conversion.success.import.aria.done")
+                : t("conversion.success.import.aria.cta")
+            }
             data-testid="success-import-button"
             className="h-auto justify-start gap-3 py-4"
           >

visionA-frontend/src/lib/i18n/dictionaries/en.ts

@@ -579,6 +579,8 @@ export const en: Dictionary = {
     "Couldn't add to model library; please try again.",
   "conversion.success.import.aria.cta":
     "Add to model library (opens a confirmation dialog)",
+  "conversion.success.import.aria.done":
+    "Added to model library; open the model detail page",
   "conversion.success.download.title": "Download .nef",
   "conversion.success.description":
     "{source} has been converted into a .nef compatible with {chip}.",

visionA-frontend/src/lib/i18n/dictionaries/zh-Hant.ts

@@ -548,6 +548,7 @@ export const zhHant: Dictionary = {
     "加到模型庫失敗，請稍後再試",
   "conversion.success.import.aria.cta":
     "加到模型庫（會開啟確認對話框）",
+  "conversion.success.import.aria.done": "已加入模型庫，前往查看模型詳細頁",
   "conversion.success.download.title": "下載 .nef",
   "conversion.success.description":
     "{source} 已成功轉成 {chip} 可用的 .nef 檔",