feat(core): 基础资产 Agent 化 — 商品三视图(image_edit 参考主图)+ 人物立绘/三视图异步生成 + 演员库/详情

- 商品三视图:有真实商品主图时走 image_edit,以主图为参考锁包装一致(品牌字/配色/外形/Logo)
- 人物:据「某一版立绘」异步生成配套三视图(image_edit,worker 内跑),立绘/三视图各存版本可切换
- 基础资产出图改异步(run_base_asset_task / generate_triview_task),Web 层不被慢出图占住
- 前端:演员库浏览/新增、人物详情(立绘+三视图+版本切换/下载/查看大图)、按 busyKey 的单卡并发 loading(genBusy,替代全局 genBusyKey,各按钮互不阻塞)
- dev:本地连云端 MySQL 复用连接(CONN_MAX_AGE/health check/connect_timeout),仅 development 生效
- 含 projects 测试补充

tsc + py_compile + 26 后端测试通过。

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

core/frontend/src/App.tsx

@@ -441,6 +441,45 @@ export function App() {
     return pollImageTasks(mode, ids).catch(() => null);
   }
 
+  // 轮询一批 AITask(基础资产/三视图异步出图)直到终态;返回成功任务产出的 assets 与最后错误。
+  // 轮询期间 Web 层是空闲的(只发轻量 status 请求),整站不卡;出图后调用方刷新项目即见新资产。
+  async function pollAiTasks(ids: string[]): Promise<{ assets: Asset[]; error: string }> {
+    const pending = new Set(ids);
+    const TERMINAL = new Set(["succeeded", "failed", "cancelled", "compensating"]);
+    const sleep = (ms: number) => new Promise((resolve) => setTimeout(resolve, ms));
+    const assets: Asset[] = [];
+    let error = "";
+    const deadline = Date.now() + 6 * 60 * 1000; // 兜底:6 分钟还没好就停轮询(图仍会在后台出完,刷新可见)
+    while (pending.size > 0 && Date.now() < deadline) {
+      await sleep(2500);
+      const res = await api.generateImageStatus([...pending]).catch(() => null);
+      if (!res) continue;
+      for (const t of res.tasks) {
+        if (!TERMINAL.has(t.status)) continue;
+        pending.delete(t.id);
+        if (t.status === "succeeded") assets.push(...(t.assets || []));
+        else if (t.error_message) error = t.error_message;
+      }
+    }
+    return { assets, error };
+  }
+
+  // 基础资产/三视图异步出图统一入口:提交(秒回任务)→ 轮询出图 → 刷新项目 → 返回新资产 id 供链式(立绘→三视图)。
+  async function submitAndPollAsset(submit: () => Promise<{ task: { id: string; status: string } } | null>, okText: string): Promise<string | null> {
+    const submitted = await submit().catch((e) => { setNotice({ type: "error", text: e instanceof Error ? e.message : "提交失败" }); return null; });
+    const taskId = submitted?.task?.id;
+    if (!taskId) return null; // 提交失败(余额不足/无 worker 等),错误已由 submit 抛出处理
+    const { assets, error } = await pollAiTasks([taskId]);
+    await refreshProjectDetail();
+    void loadData();
+    if (assets.length === 0) {
+      setNotice({ type: "error", text: error || "生成超时,稍后可在资产里查看" });
+      return null;
+    }
+    setNotice({ type: "success", text: okText });
+    return assets[0].id;
+  }
+
   async function onAuthed(payload: { token: string; user: User; team: Team; remember?: boolean }) {
     setToken(payload.token, payload.remember ?? true);
     setUser(payload.user);
@@ -564,6 +603,7 @@ export function App() {
           <ProjectWizardPage
             products={products}
             projects={projects}
+            assets={assets}
             preselectProductId={activeProductId}
             onBack={() => navigate("projects")}
             onCreate={async (payload) => {
@@ -694,7 +734,11 @@ export function App() {
         }
         onAdoptVideoVersion={(segmentId, versionId) => action(() => api.adoptVideoVersion(pipelineProject.id, { video_segment_id: segmentId, version_id: versionId }), "已采用该版本")}
         onGenerateVoiceover={(payload) => action(() => api.generateVoiceover(pipelineProject.id, payload), "配音已生成")}
-        onGenerateBaseAsset={(kind, prompt, label) => action(() => api.generateBaseAsset(pipelineProject.id, { kind, prompt, label }), "基础资产已生成")}
+        onGenerateBaseAsset={async (kind, prompt, label) => {
+          // 异步:提交→轮询出图→刷新;返回新资产 id 供「立绘→三视图」链式生成
+          const assetId = await submitAndPollAsset(() => api.generateBaseAsset(pipelineProject.id, { kind, prompt, label }), "基础资产已生成");
+          return assetId ? { adopted_asset: assetId } : null;
+        }}
         onGenerateStoryboard={(prompt) =>
           action(async () => {
             // 异步故事板:提交(秒回)后轮询;后端在后台线程逐帧生成,poll 永远秒回,故每轮间隔等待
@@ -711,7 +755,11 @@ export function App() {
         }
         onAdoptBaseAsset={(groupId, assetId) => action(() => api.adoptBaseAsset(pipelineProject.id, { group_id: groupId, asset_id: assetId }), "已采用该候选")}
         onAttachBaseAsset={(groupId, assetId) => action(() => api.attachBaseAsset(pipelineProject.id, { group_id: groupId, asset_id: assetId }), "已替换为所选演员")}
-        onGenerateTriview={(portraitAssetId) => action(() => api.generateTriview(pipelineProject.id, { portrait_asset_id: portraitAssetId }), "三视图已据立绘生成")}
+        onGenerateTriview={async (portraitAssetId) => {
+          // 异步:image_edit 慢出图在 worker 跑,轮询期间整站不卡;出图后刷新即见三视图
+          const assetId = await submitAndPollAsset(() => api.generateTriview(pipelineProject.id, { portrait_asset_id: portraitAssetId }), "三视图已据立绘生成");
+          return assetId ? { id: assetId } : null;
+        }}
         onGenerateActor={(prompt) => generateImages({ prompt, mode: "model", count: 1 })}
         onUploadActor={(file) => {
           const fd = new FormData();