Keep the Extend panel put and name sibling clips as branches.

A finished job no longer closes a draft or jumps the page, and a second extend from the same part saves as p8b instead of another p8.

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

server/utils/watch.ts

@@ -7,6 +7,7 @@ import { syncQueueFromJob } from '~/server/utils/shotQueue'
 import { isEncodingNode, NODE_LABELS } from '~/server/utils/workflow'
 import { extractFirstFrameFromBuffer } from '~/server/utils/ffmpeg'
 import { mergePermanenceRefs, type PermanenceRef } from '~/utils/globalLocks'
+import { nextFamilyPartName } from '~/server/utils/library'
 
 function clipRefsFromJob(library: NonNullable<Job['library']>): PermanenceRef[] | undefined {
   const refs = mergePermanenceRefs(library.permanenceRefs, library.shotPermanenceRefs?.[library.chainIndex || 0])
@@ -252,7 +253,7 @@ export function watchComfyJob(job: Job, options: { persist?: boolean } = {}): Pr
             job.savedPromptId = job.promptId
             job.hideThumbnail = clip.hideThumbnail
             job.library.thumb = undefined
-            job.library.name = nextClipPartName(clip.name)
+            job.library.name = nextFamilyPartName(job.library.ownerKey, clip)
             job.library.parentClipId = clip.id
             await syncQueueFromJob(job, clip.id).catch(() => null)
             await purgeComfyArtifacts({