Add sidecar Qwen VL prompt recommend, fix queued shot bursts, and leave unused MiniMax identity slots empty.

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

server/api/prompt/recommend.post.ts

@@ -0,0 +1,48 @@
+import { promptComfyConfigured, createPromptJob, runPromptRecommend, failPromptJob, promptJobSnapshot } from '~/server/utils/promptComfy'
+import { getPromptPreset } from '~/server/utils/promptPresets'
+
+export default defineEventHandler(async (event) => {
+  if (!promptComfyConfigured()) {
+    throw createError({
+      statusCode: 503,
+      statusMessage: 'Sidecar Qwen VL is not configured. Set IMAGE_COMFY_HOST.'
+    })
+  }
+
+  const form = await readMultipartFormData(event).catch(() => null)
+  if (!form?.length) {
+    throw createError({ statusCode: 400, statusMessage: 'Expected an image and a draft prompt' })
+  }
+
+  const fields: Record<string, string> = {}
+  let image: { filename: string; data: Buffer; type?: string } | null = null
+  for (const part of form) {
+    if (part.name === 'image' && part.filename && part.data?.length) {
+      image = { filename: part.filename, data: part.data, type: part.type }
+    } else if (part.name && part.data) {
+      fields[part.name] = part.data.toString('utf8')
+    }
+  }
+
+  if (!image) {
+    throw createError({ statusCode: 400, statusMessage: 'Load a still before recommending a prompt' })
+  }
+  const draftPrompt = (fields.prompt || '').trim()
+  if (!draftPrompt) {
+    throw createError({ statusCode: 400, statusMessage: 'Type a draft prompt to enhance' })
+  }
+
+  const owner = libraryOwnerKey(event)
+  const preset = getPromptPreset(owner, fields.presetId || 'enhance')
+  const mode = ['edit', 'shot-script', 'video'].includes(fields.mode) ? fields.mode : 'video'
+  const job = createPromptJob()
+
+  void runPromptRecommend(job, {
+    image,
+    draftPrompt,
+    systemPrompt: preset.systemPrompt,
+    mode
+  }).catch(error => failPromptJob(job, error))
+
+  return promptJobSnapshot(job)
+})