Fix library thumbnails and let clips keep a display name.

Extract a poster frame when a still-thumb is missing, and show the clip name in the library with the prompt on the info icon.

Co-authored-by: Cursor <cursoragent@cursor.com>

server/utils/pending.ts

@@ -8,6 +8,7 @@ export interface PendingJob {
   ownerKey: string
   folderId: string
   hideThumbnail: boolean
+  name?: string
   prompt: string
   aspect: string
   width: number
@@ -68,6 +69,7 @@ export async function completePendingIfReady(pending: PendingJob) {
   const clip = await saveClip({
     ownerKey: pending.ownerKey,
     folderId: pending.folderId,
+    name: pending.name,
     prompt: pending.prompt,
     aspect: pending.aspect,
     width: pending.width,