Recover finished Comfy videos after relay restarts.

Persist queued jobs to disk, import leftover MP4s from Comfy history, and do not mark a run complete until the saved video exists.

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

pages/index.vue

@@ -705,7 +705,15 @@ function listen(id: string, hidden: boolean) {
       const snap = await $fetch<Record<string, any>>(`/api/generate/${id}`)
       applyJobEvent(snap, hidden)
     } catch {
-      // Job snapshot can 404 briefly after a restart; keep polling while busy.
+      try {
+        const recovered = await $fetch<Record<string, any>>('/api/generate/recover', {
+          method: 'POST',
+          body: { jobId: id }
+        })
+        applyJobEvent(recovered, hidden)
+      } catch {
+        // Job snapshot can 404 briefly after a restart; keep polling while busy.
+      }
     }
   }
   void tick()