优化后台

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

@@ -71,6 +71,37 @@ const IMAGE_PRESETS: PresetItem[] = [
 const MENTION_REF_LIMIT = 20;
 const ROLE_REF_LIMIT = 3;
 
+function playPresetPreview(card: HTMLElement) {
+  const video = card.querySelector<HTMLVideoElement>("video");
+  if (!video || video.dataset.broken === "1") return;
+  const reveal = () => {
+    if (video.dataset.broken === "1" || video.videoWidth === 0) return;
+    video.classList.add("is-playing");
+  };
+  const fail = () => {
+    video.dataset.broken = "1";
+    video.classList.remove("is-playing");
+    video.pause();
+  };
+  video.addEventListener("error", fail, { once: true });
+  video.addEventListener("playing", reveal, { once: true });
+  void video.play().catch(fail);
+}
+
+function stopPresetPreview(card: HTMLElement) {
+  const video = card.querySelector<HTMLVideoElement>("video");
+  if (!video) return;
+  video.pause();
+  if (video.dataset.broken !== "1" && Number.isFinite(video.duration)) {
+    try {
+      video.currentTime = 0;
+    } catch {
+      /* Safari 在还没解码时不允许回绕 */
+    }
+  }
+  video.classList.remove("is-playing");
+}
+
 const MENTION_TABS: Array<{ type: CreationRef["type"]; label: string; Icon: typeof ImageIcon }> = [
   { type: "asset", label: "素材", Icon: ImageIcon },
   { type: "character", label: "角色", Icon: UserRound },
@@ -671,39 +702,22 @@ export function OmniCreatePage({
                 className={`omni-case-card${selectedCase?.name === card.name ? " active" : ""}`}
                 data-mode={card.mode}
                 key={card.name}
-                onMouseEnter={(event) => {
-                  const video = event.currentTarget.querySelector<HTMLVideoElement>("video");
-                  void video?.play().catch(() => undefined);
-                }}
-                onMouseLeave={(event) => {
-                  const video = event.currentTarget.querySelector<HTMLVideoElement>("video");
-                  if (!video) return;
-                  video.pause();
-                  video.currentTime = 0;
-                }}
-                onFocus={(event) => {
-                  const video = event.currentTarget.querySelector<HTMLVideoElement>("video");
-                  void video?.play().catch(() => undefined);
-                }}
-                onBlur={(event) => {
-                  const video = event.currentTarget.querySelector<HTMLVideoElement>("video");
-                  if (!video) return;
-                  video.pause();
-                  video.currentTime = 0;
-                }}
+                onMouseEnter={(event) => playPresetPreview(event.currentTarget)}
+                onMouseLeave={(event) => stopPresetPreview(event.currentTarget)}
+                onFocus={(event) => playPresetPreview(event.currentTarget)}
+                onBlur={(event) => stopPresetPreview(event.currentTarget)}
                 onClick={() => {
                   if (card.mode === "image") applyPreset(card);
                   else setPreviewCase(card);
                 }}
               >
                 <span className="omni-case-visual">
+                  <img src={card.cover} alt="" />
                   {card.previewVideo ? (
-                    <video muted loop playsInline preload="metadata" poster={card.cover} aria-label={`${card.title} 样片预览`}>
+                    <video muted loop playsInline preload="none" poster={card.cover} aria-hidden="true">
                       <source src={card.previewVideo} type="video/mp4" />
                     </video>
-                  ) : (
-                    <img src={card.cover} alt="" />
-                  )}
+                  ) : null}
                 </span>
                 <span className="omni-case-copy">
                   <strong>{card.title}</strong>