Fix LoRA folder drops not appearing without weakening engine filters.

Stop empty Comfy blips from freezing the LoRA cache timestamp, and refresh the picker list from Comfy on each poll. Engine tagging (flux/krea) and xaigen platform filtering stay as they were.

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

server/api/loras.get.ts

@@ -1,7 +1,8 @@
 import { listStudioLoras } from '~/server/utils/loras'
 
-export default defineEventHandler(async () => {
-  const listed = await listStudioLoras()
+export default defineEventHandler(async (event) => {
+  const fresh = String(getQuery(event).fresh || '') === '1'
+  const listed = await listStudioLoras({ fresh })
   return {
     image: listed.image,
     video: listed.video

server/utils/loras.ts

@@ -142,10 +142,12 @@ async function discoverFromHost(via: 'video' | 'image') {
   return { image, video }
 }
 
-async function loadLoraCache(): Promise<LoraCache> {
+async function loadLoraCache(options: { fresh?: boolean } = {}): Promise<LoraCache> {
+  const fresh = options.fresh === true
   const now = Date.now()
-  if (cache && now - cache.at < CACHE_MS) return cache
-  if (inflight) return inflight
+  if (!fresh && cache && now - cache.at < CACHE_MS) return cache
+  if (inflight && (!fresh || inflightFresh)) return inflight
+  inflightFresh = fresh
   inflight = (async () => {
     const videoHost = comfyConfigured() ? getComfyHost() : ''
     const imageHost = getBeastImageHost()
@@ -161,23 +163,39 @@ async function loadLoraCache(): Promise<LoraCache> {
       image: uniqueNames([...image.image, ...video.image]),
       video: uniqueNames([...video.video, ...image.video])
     }
-    // Comfy asleep / unreachable returns empty. Keep the last good list so the picker does not vanish.
+    // Comfy asleep / unreachable returns empty. Keep the last good list so the picker
+    // does not vanish — but do NOT refresh `at`, or a blip freezes new folder drops out.
     if (!next.image.length && !next.video.length && cache && (cache.image.length || cache.video.length)) {
-      cache = { ...cache, at: Date.now() }
       return cache
     }
+    // Prefer the richer list when a partial reply would shrink a known catalog.
+    if (
+      cache
+      && (next.image.length + next.video.length) < (cache.image.length + cache.video.length)
+      && next.image.every(name => cache!.image.includes(name) || cache!.video.includes(name))
+      && next.video.every(name => cache!.image.includes(name) || cache!.video.includes(name))
+    ) {
+      const merged: LoraCache = {
+        at: Date.now(),
+        image: uniqueNames([...cache.image, ...next.image]),
+        video: uniqueNames([...cache.video, ...next.video])
+      }
+      cache = merged
+      return merged
+    }
     cache = next
     return next
   })().finally(() => {
     inflight = null
+    inflightFresh = false
   })
   return inflight
 }
 
-export async function listStudioLoras() {
+export async function listStudioLoras(options: { fresh?: boolean } = {}) {
   const xaigen = isXaigenStudio()
   try {
-    const listed = await loadLoraCache()
+    const listed = await loadLoraCache(options)
     return {
       at: listed.at,
       image: filterLorasForStudio(listed.image, xaigen),