Stop Comfy input folder filling with duplicate still uploads.

Name uploads by content hash so the same still overwrites itself, enable stale input sweeps on purge, and remove the pile already on the desktop Shared input folder.

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

server/utils/imageComfy.ts

@@ -1,3 +1,4 @@
+import { createHash } from 'node:crypto'
 import { AsyncLocalStorage } from 'node:async_hooks'
 import { getComfyHost, viaAgentFrontDoor } from '~/server/utils/comfy'
 import { comfyJobPrefix } from '~/utils/outputNames'
@@ -94,18 +95,21 @@ export function imageComfyWsUrl(clientId: string) {
   return `${getImageComfyHost().replace(/^http/, 'ws')}/ws?clientId=${encodeURIComponent(clientId)}`
 }
 
-function imageInputFilename(original: string, jobId?: string) {
+function imageInputFilename(original: string, data?: Buffer, jobId?: string) {
   const raw = String(original || 'still.png')
   const dot = raw.lastIndexOf('.')
   const ext = (dot >= 0 ? raw.slice(dot) : '.png').replace(/[^.a-zA-Z0-9]/g, '') || '.png'
   const base = (dot >= 0 ? raw.slice(0, dot) : raw).replace(/[^a-zA-Z0-9._-]+/g, '_').slice(0, 48) || 'still'
-  return `${comfyJobPrefix(jobId)}_${base}${ext}`
+  const hash = data?.length
+    ? createHash('sha1').update(data).digest('hex').slice(0, 12)
+    : comfyJobPrefix(jobId)
+  return `aigen_${hash}_${base}${ext}`
 }
 
 export async function uploadImageEdit(file: { filename: string; data: Buffer; type?: string }, jobId?: string) {
   const body = new FormData()
   const blob = new Blob([new Uint8Array(file.data)], { type: file.type || 'application/octet-stream' })
-  const filename = imageInputFilename(file.filename, jobId)
+  const filename = imageInputFilename(file.filename, file.data, jobId)
   body.append('image', blob, filename)
   body.append('overwrite', 'true')
   body.append('type', 'input')
@@ -393,7 +397,8 @@ async function purgeImageOnDesktop(opts: {
         imageNames,
         imageSubfolder: opts.inputSubfolder || '',
         output: opts.output || null,
-        sweep: false
+        sweep: true,
+        sweepMaxAgeMs: 2 * 60 * 1000
       }),
       signal: AbortSignal.timeout(8000)
     })