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/api/edit.post.ts

@@ -4,6 +4,7 @@ import { assertImageScaleToTotalPixelsNode, comfyConfigured } from '~/server/uti
 import { imageDimensions } from '~/server/utils/resolution'
 import { parseImageAspect } from '~/utils/imageAspect'
 import { clampImageCfg, clampImageScaleMegapixels, clampImageSteps, parseImagePassMode, parseImageScaleToTotalPixels } from '~/utils/generationPresets'
+import { joinPromptParts } from '~/utils/promptParts'
 
 function parsePasses(raw: string | undefined) {
   if (!raw) return [] as { prompt: string }[]
@@ -33,16 +34,17 @@ export default defineEventHandler(async (event) => {
     }
   }
 
-  const prompt = (fields.prompt || '').trim()
+  const promptMid = (fields.prompt || '').trim()
   const promptPre = (fields.promptPre || '').trim()
   const promptPost = (fields.promptPost || '').trim()
+  const prompt = joinPromptParts(promptPre, promptMid, promptPost)
   const extraPasses = parsePasses(fields.passes)
   const passMode = parseImagePassMode(fields.passMode)
   const aspect = parseImageAspect(fields.aspect)
   if (!image) {
     throw createError({ statusCode: 400, statusMessage: 'An input image is required' })
   }
-  if (!prompt && aspect === 'auto') {
+  if (!promptMid && aspect === 'auto') {
     throw createError({ statusCode: 400, statusMessage: 'An edit prompt is required' })
   }
   if (extraPasses.some(item => !item.prompt)) {