Ship duration control, hidden previews, job resume, and desktop file purge.

The slider never left this machine, so deploy the generate UI with separate input/output hide toggles, reconnect in-progress jobs after refresh, and delete Comfy input/output files after they are saved to the library.

server/utils/comfy.ts

@@ -1,4 +1,11 @@
+let comfyHostOverride = ''
+
+export function setComfyHostOverride(url: string) {
+  comfyHostOverride = String(url || '').replace(/\/$/, '')
+}
+
 function comfyBase() {
+  if (comfyHostOverride) return comfyHostOverride
   const config = useRuntimeConfig()
   let host = String(config.comfyHost || process.env.COMFY_HOST || '').trim().replace(/\/$/, '')
   const port = String(config.comfyPort || process.env.COMFY_PORT || '').trim()
@@ -204,7 +211,34 @@ export function isOurComfyVideo(video: { filename: string; subfolder: string })
 }
 
 export function purgeComfyEnabled() {
-  return Boolean(useRuntimeConfig().purgeComfyOutputs)
+  return useRuntimeConfig().purgeComfyOutputs !== false
+}
+
+async function purgeOnDesktop(opts: {
+  video?: { filename: string; subfolder: string; type: string }
+  imageName?: string
+}) {
+  const config = useRuntimeConfig()
+  const controlUrl = String(config.comfyControlUrl || process.env.COMFY_CONTROL_URL || '').replace(/\/$/, '')
+  const token = String(config.comfyControlToken || process.env.COMFY_CONTROL_TOKEN || '')
+  if (!controlUrl) return
+  try {
+    await fetch(`${controlUrl}/purge`, {
+      method: 'POST',
+      headers: {
+        'Content-Type': 'application/json',
+        Accept: 'application/json',
+        ...(token ? { Authorization: `Bearer ${token}` } : {})
+      },
+      body: JSON.stringify({
+        imageName: opts.imageName || '',
+        video: opts.video || null
+      }),
+      signal: AbortSignal.timeout(8000)
+    })
+  } catch {
+    // Host agent may be down; Comfy HTTP purge is the fallback.
+  }
 }
 
 export async function purgeComfyArtifacts(opts: {
@@ -213,6 +247,7 @@ export async function purgeComfyArtifacts(opts: {
   promptId?: string
 }) {
   if (!purgeComfyEnabled()) return
+  await purgeOnDesktop(opts)
   const files: { filename: string; subfolder: string; type: string }[] = []
   if (opts.video?.filename) files.push(opts.video)
   if (opts.imageName) files.push({ filename: opts.imageName, subfolder: '', type: 'input' })