全能创作：定妆/台词/换款与剧情方向硬约束，资源可下载

修角色定妆修改不重出图、角色图混入商品、宠物旁白腔、换款同点复读、剧情反转方向漂移，并补会话资源下载与外观/空消息闸门。

core/frontend/src/routes/omni-session.tsx

@@ -666,10 +666,57 @@ function planDocumentBody(payload: Record<string, unknown>): string {
   ].join("\n\n");
 }
 
+
+function sanitizeDownloadName(name: string, fallback: string): string {
+  const cleaned = String(name || "").trim().replace(/[\\/:*?"<>|]+/g, "_");
+  return cleaned || fallback;
+}
+
+function triggerBlobDownload(blob: Blob, filename: string) {
+  const href = URL.createObjectURL(blob);
+  const anchor = document.createElement("a");
+  anchor.href = href;
+  anchor.download = filename;
+  document.body.appendChild(anchor);
+  anchor.click();
+  anchor.remove();
+  window.setTimeout(() => URL.revokeObjectURL(href), 1000);
+}
+
+/** 对话资源下载：文档走本地 blob；图片/视频优先 fetch blob，跨域失败则新开标签。 */
+async function downloadSessionResource(options: {
+  kind: SessionAssetKind;
+  title: string;
+  src?: string;
+  body?: string;
+}) {
+  const { kind, title, src, body } = options;
+  if (kind === "document") {
+    const filename = sanitizeDownloadName(title, "对话资源.md");
+    const safeName = filename.toLowerCase().endsWith(".md") ? filename : `${filename}.md`;
+    triggerBlobDownload(new Blob([String(body || "")], { type: "text/markdown;charset=utf-8" }), safeName);
+    return;
+  }
+  if (!src) return;
+  const fallback = kind === "video" ? "生成视频.mp4" : "生成图片.png";
+  const filename = sanitizeDownloadName(title, fallback);
+  try {
+    const response = await fetch(src, { mode: "cors" });
+    if (!response.ok) throw new Error(`download failed: ${response.status}`);
+    const blob = await response.blob();
+    let finalName = filename;
+    if (kind === "video" && !/\.\w+$/.test(finalName)) finalName = `${finalName}.mp4`;
+    if (kind === "image" && !/\.\w+$/.test(finalName)) finalName = `${finalName}.png`;
+    triggerBlobDownload(blob, finalName);
+  } catch {
+    window.open(src, "_blank", "noopener,noreferrer");
+  }
+}
+
 function documentDescription(title: string): string {
-  if (title.includes("创作策略")) return "创作策略 · 点击查看";
-  if (title.includes("视频最终方案")) return "视频方案 · 点击查看";
-  return "出片指令 · 点击查看";
+  if (title.includes("创作策略")) return "创作策略 · 可下载";
+  if (title.includes("视频最终方案")) return "视频方案 · 可下载";
+  return "出片指令 · 可下载";
 }
 
 /** 从本会话已加载 messages(+pinned_refs / 会话上传)聚合聊天资产，不另打 BE。 */
@@ -864,7 +911,22 @@ function StrategyCard({ payload }: { payload: Record<string, unknown> }) {
     <section className="omni-strategy-card">
       <header className="omni-strategy-head">
         <strong>创作策略理解</strong>
-        <span>平台自动判断</span>
+        <div className="omni-doc-head-actions">
+          <span>平台自动判断</span>
+          <button
+            type="button"
+            className="omni-doc-download"
+            title="下载"
+            aria-label="下载创作策略"
+            onClick={() => void downloadSessionResource({
+              kind: "document",
+              title: "创作策略摘要.md",
+              body: strategyDocumentBody(payload),
+            })}
+          >
+            <Download />
+          </button>
+        </div>
       </header>
       <div className="omni-strategy-grid">
         {items.map(([label, value]) => (
@@ -935,7 +997,22 @@ function PlanCard({ payload }: { payload: Record<string, unknown> }) {
     <section className="omni-video-plan-card">
       <header className="omni-video-plan-head">
         <strong>视频最终方案</strong>
-        <span>确认后进入出片参数核对</span>
+        <div className="omni-doc-head-actions">
+          <span>确认后进入出片参数核对</span>
+          <button
+            type="button"
+            className="omni-doc-download"
+            title="下载"
+            aria-label="下载视频最终方案"
+            onClick={() => void downloadSessionResource({
+              kind: "document",
+              title: "视频最终方案.md",
+              body: planDocumentBody(payload),
+            })}
+          >
+            <Download />
+          </button>
+        </div>
       </header>
       <section className="omni-plan-section">
         <strong>卖点做减法</strong>
@@ -1007,9 +1084,15 @@ function PromptFileCard({
         <small>已根据方案、参数和 {String(payload.ref_count ?? 0)} 组参考素材在后台整理完成</small>
       </div>
       {body ? (
-        <button type="button" onClick={() => onView(title, body)}>
-          查看 Prompt
-        </button>
+        <div className="omni-prompt-file-actions">
+          <button type="button" className="is-secondary" onClick={() => void downloadSessionResource({ kind: "document", title, body })}>
+            <Download />
+            下载
+          </button>
+          <button type="button" onClick={() => onView(title, body)}>
+            查看 Prompt
+          </button>
+        </div>
       ) : null}
     </section>
   );
@@ -1533,9 +1616,24 @@ function ElicitCard({
     const question = message.text || fields[0]?.label || "这项你想怎么定？";
     const compactChoiceOnly = String(message.payload.topic || "") === "cast_relation";
     // 兼容多种 options 来源：单选、多选、或字段内直接携带 options
-    const rawChoiceField = fields.find(
+    const fieldChoice = fields.find(
       (field) => Array.isArray(field.options) && field.options.length > 0,
     );
+    const replyOptions = Array.isArray(message.payload.reply_options)
+      ? (message.payload.reply_options as Array<{ label?: string; text?: string; value?: string }>)
+      : [];
+    const replyChoiceField = replyOptions.length > 0
+      ? {
+          key: fields[0]?.key || "answer",
+          label: fields[0]?.label || question,
+          type: "single" as const,
+          options: replyOptions.map((item, index) => ({
+            value: String(item.text || item.value || item.label || `option_${index + 1}`),
+            label: String(item.label || item.text || item.value || `选项 ${index + 1}`),
+          })),
+        }
+      : null;
+    const rawChoiceField = fieldChoice || replyChoiceField;
     // 如果是痛点方向追问、或文案明确提及「直接点击一个选项」，但在 fields 里未能取到 options，提供兜底选项
     const isPainPointQuestion =
       fields[0]?.key === "pain_point_direction"
@@ -1596,7 +1694,14 @@ function ElicitCard({
                         type="button"
                         key={value || index}
                         disabled={disabled}
-                        onClick={() => onSubmit({ [choiceField.key || "choice"]: value }, [])}
+                        onClick={() => {
+                          // reply_options 是快捷整句回答，走聊天正文；字段 options 仍走 elicit answers。
+                          if (replyChoiceField && !fieldChoice) {
+                            onChatAnswer(value);
+                            return;
+                          }
+                          onSubmit({ [choiceField.key || "choice"]: value }, []);
+                        }}
                       >
                         {label}
                       </button>
@@ -3708,7 +3813,7 @@ export function OmniSessionPage({
         <>
           <button type="button" className="omni-prompt-drawer-bg" aria-label="关闭 Prompt" onClick={() => setPromptView(null)} />
           <aside className="omni-prompt-drawer" role="dialog" aria-label={promptView.title}>
-            <header>
+            <header className="omni-prompt-drawer-head">
               <span className="omni-prompt-drawer-file">
                 <FileText />
               </span>
@@ -3716,6 +3821,19 @@ export function OmniSessionPage({
                 <strong>{promptView.title}</strong>
                 <small>{documentDescription(promptView.title)}</small>
               </div>
+              <button
+                type="button"
+                className="omni-doc-download"
+                title="下载"
+                aria-label="下载文档"
+                onClick={() => void downloadSessionResource({
+                  kind: "document",
+                  title: promptView.title,
+                  body: promptView.body,
+                })}
+              >
+                <Download />
+              </button>
               <button type="button" onClick={() => setPromptView(null)} aria-label="关闭">
                 <X />
               </button>
@@ -3924,59 +4042,91 @@ export function OmniSessionPage({
                       {group.items.map((asset) => {
                         if (asset.kind === "document") {
                           return (
-                            <button
-                              type="button"
-                              className="omni-assets-card is-doc"
-                              key={asset.key}
-                              onClick={() => {
-                                setPromptView({
+                            <div className="omni-assets-card is-doc" key={asset.key}>
+                              <button
+                                type="button"
+                                className="omni-assets-card-main"
+                                onClick={() => {
+                                  setPromptView({
+                                    title: asset.promptTitle || asset.title,
+                                    body: asset.promptBody || "暂无内容",
+                                  });
+                                }}
+                              >
+                                <span className="omni-assets-thumb is-doc">
+                                  <FileText />
+                                </span>
+                                <span className="omni-assets-meta">
+                                  <strong>{asset.title}</strong>
+                                  <small>{asset.documentDescription || "文档 · 点击查看"}</small>
+                                </span>
+                              </button>
+                              <button
+                                type="button"
+                                className="omni-assets-dl"
+                                title="下载"
+                                aria-label={`下载${asset.title}`}
+                                onClick={() => void downloadSessionResource({
+                                  kind: "document",
                                   title: asset.promptTitle || asset.title,
-                                  body: asset.promptBody || "暂无内容",
-                                });
-                              }}
-                            >
-                              <span className="omni-assets-thumb is-doc">
-                                <FileText />
-                              </span>
-                              <span className="omni-assets-meta">
-                                <strong>{asset.title}</strong>
-                                <small>{asset.documentDescription || "文档 · 点击查看"}</small>
-                              </span>
-                            </button>
+                                  body: asset.promptBody || "",
+                                })}
+                              >
+                                <Download />
+                              </button>
+                            </div>
                           );
                         }
                         return (
-                          <button
-                            type="button"
-                            className={`omni-assets-card is-${asset.kind}`}
-                            key={asset.key}
-                            disabled={!asset.src}
-                            onClick={() => {
-                              if (!asset.src) return;
-                              setAssetPreview({
-                                src: asset.src,
-                                kind: asset.kind === "video" ? "video" : "image",
-                                name: asset.title,
-                              });
-                            }}
-                          >
-                            <span className="omni-assets-thumb">
-                              {asset.thumb ? (
-                                <img src={asset.thumb} alt="" />
-                              ) : (
-                                <i>{asset.kind === "video" ? <Play /> : <Image />}</i>
-                              )}
-                              {asset.kind === "video" ? (
-                                <span className="omni-assets-play" aria-hidden="true">
-                                  <Play />
-                                </span>
-                              ) : null}
-                            </span>
-                            <span className="omni-assets-meta">
-                              <strong>{asset.title}</strong>
-                              <small>{asset.kind === "video" ? "视频" : "图片"}</small>
-                            </span>
-                          </button>
+                          <div className={`omni-assets-card is-${asset.kind}`} key={asset.key}>
+                            <button
+                              type="button"
+                              className="omni-assets-card-main"
+                              disabled={!asset.src}
+                              onClick={() => {
+                                if (!asset.src) return;
+                                setAssetPreview({
+                                  src: asset.src,
+                                  kind: asset.kind === "video" ? "video" : "image",
+                                  name: asset.title,
+                                });
+                              }}
+                            >
+                              <span className="omni-assets-thumb">
+                                {asset.thumb ? (
+                                  <img src={asset.thumb} alt="" />
+                                ) : (
+                                  <i>{asset.kind === "video" ? <Play /> : <Image />}</i>
+                                )}
+                                {asset.kind === "video" ? (
+                                  <span className="omni-assets-play" aria-hidden="true">
+                                    <Play />
+                                  </span>
+                                ) : null}
+                              </span>
+                              <span className="omni-assets-meta">
+                                <strong>{asset.title}</strong>
+                                <small>{asset.kind === "video" ? "视频" : "图片"}</small>
+                              </span>
+                            </button>
+                            <button
+                              type="button"
+                              className="omni-assets-dl"
+                              title="下载"
+                              aria-label={`下载${asset.title}`}
+                              disabled={!asset.src}
+                              onClick={() => {
+                                if (!asset.src) return;
+                                void downloadSessionResource({
+                                  kind: asset.kind,
+                                  title: asset.title,
+                                  src: asset.src,
+                                });
+                              }}
+                            >
+                              <Download />
+                            </button>
+                          </div>
                         );
                       })}
                     </div>
@@ -4030,6 +4180,11 @@ export function OmniSessionPage({
         kind={assetPreview?.kind}
         name={assetPreview?.name}
         close={() => setAssetPreview(null)}
+        onDownload={assetPreview?.src ? () => void downloadSessionResource({
+          kind: assetPreview.kind === "video" ? "video" : "image",
+          title: assetPreview.name || (assetPreview.kind === "video" ? "生成视频.mp4" : "生成图片.png"),
+          src: assetPreview.src,
+        }) : undefined}
       />
       <AssetSelectModal
         open={sessionAssetModalOpen}