fix(extension): attach an optional video transcript to image uploads

The cover-image form can carry a transcript job. Callers that omit it
leave the field off the request.

apps/extension/src/background.ts

@@ -267,6 +267,7 @@ const imageNoteClient = (settings: ExtensionSettings): ImageNoteClient => ({
     form.append("title", body.title);
     form.append("contentMarkdown", body.contentMarkdown);
     form.append("tags", JSON.stringify(body.tags));
+    if (body.videoTranscript) form.append("videoTranscript", JSON.stringify(body.videoTranscript));
     form.append("file", new File([buffer], body.filename, { type: body.mimeType }));
     const created = await edgeEverFormRequest<{ memo: { id: string }; resourceId: string }>(
       settings,

apps/extension/src/image-clip.ts

@@ -289,6 +289,14 @@ export type ImageNoteClient = {
     filename: string;
     mimeType: string;
     bytes: Uint8Array;
+    videoTranscript?: {
+      platform: "youtube" | "bilibili";
+      videoId: string;
+      sourceUrl: string;
+      durationSeconds: number;
+      placeholderText: string;
+      transcriptLabel: string;
+    };
   }) => Promise<{ memoId: string; resourceId: string }>;
 };