Join pre/prompt/post for Comfy, stop zero-size generates snapping to a small square, and give the phone library a real closeable preview.

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

server/utils/videoChain.ts

@@ -22,7 +22,7 @@ import {
   updateShotQueue
 } from '~/server/utils/shotQueue'
 import { composeShotPrompt, allowIdentityRefs, type PermanenceRef } from '~/utils/globalLocks'
-import { composePromptParts, resolvePromptWrappers } from '~/utils/promptParts'
+import { composePromptParts, joinPromptParts, resolvePromptWrappers } from '~/utils/promptParts'
 import type { QueuedExtension } from '~/server/utils/library'
 import { persistLoraFields, ensureComfyLoraNames } from '~/server/utils/loras'
 import { readLoraStack, resolveLoraStack } from '~/utils/loras'
@@ -150,7 +150,10 @@ export async function queueMiniMax(
   job.status = 'uploading'
   const chainIndex = job.library?.chainIndex || 0
   const graphId = chainIndex > 0 ? workflowForExtension(params.workflow) : params.workflow
-  if (job.library) Object.assign(job.library, persistLoraFields(params.loraStack || params.loraName || job.library.loraStack || job.library.loraName))
+  if (job.library) {
+    const stack = resolveLoraStack(job.library.loraStack || job.library.loraName, params.loraStack || params.loraName)
+    if (stack.length) Object.assign(job.library, persistLoraFields(stack))
+  }
   const engineName = isLtxWorkflow(graphId) ? 'LTX-2.3' : 'MiniMax H3'
   const hasImage = Boolean(params.image?.data?.length)
   const uploading = !hasImage
@@ -188,7 +191,7 @@ export async function queueMiniMax(
   const shotIndex = job.library?.chainIndex || 0
   const composedPrompt = composeShotPrompt({
     globalLocks: job.library?.globalLocks || params.globalLocks,
-    prompt: composePromptParts(job.library?.promptPre || '', params.prompt, job.library?.promptPost || ''),
+    prompt: joinPromptParts(job.library?.promptPre, params.prompt, job.library?.promptPost),
     shotIndex,
     familyRefs: job.library?.permanenceRefs || params.permanenceRefs,
     shotRefs: job.library?.shotPermanenceRefs?.[shotIndex] || params.shotPermanenceRefs?.[shotIndex]
@@ -417,7 +420,7 @@ export async function continueQueuedExtensions(
         break
       }
       await queueMiniMax(job, {
-        prompt: ext.prompt,
+        prompt: joinPromptParts(wrappers.promptPre, ext.prompt, wrappers.promptPost),
         image: { filename: 'last_frame.png', data: frame, type: 'image/png' },
         width: params.width,
         height: params.height,