Stop cancelled video jobs from coming back after delete.

A leftover process-remaining wake was flipping the row back to running or error, so Remove looked like it did nothing.

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

server/utils/videoChain.ts

@@ -13,6 +13,7 @@ import { onLiveVideoSettled, onStudioQueueBurstStarted } from '~/server/utils/st
 import {
   finishQueueBurst,
   getShotQueue,
+  isShotQueueCancelled,
   lastCompletedIndex,
   liveSegmentPrompt,
   prepareQueueBurst,
@@ -515,6 +516,9 @@ export async function runGeneration(job: Job, params: VideoChainParams) {
 }
 
 export async function startQueueBurst(owner: string, queueId: string, count: number | 'all') {
+  if (isShotQueueCancelled(queueId)) {
+    throw createError({ statusCode: 410, statusMessage: 'This batch was removed' })
+  }
   await ensureComfyReady((status) => {
     console.log(JSON.stringify({
       src: 'video-chain',
@@ -524,6 +528,9 @@ export async function startQueueBurst(owner: string, queueId: string, count: num
       message: status.message
     }))
   })
+  if (isShotQueueCancelled(queueId)) {
+    throw createError({ statusCode: 410, statusMessage: 'This batch was removed' })
+  }
   const { queue, count: n } = await prepareQueueBurst(owner, queueId, count)
   const lastIndex = lastCompletedIndex(queue)
   const clipId = queue.currentClipId