Serve the bench before the catalog and never await ffmpeg on /thumb.

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

server/utils/library.ts

@@ -187,6 +187,7 @@ interface Catalog {
 }
 
 const writeChains = new Map<string, Promise<unknown>>()
+const catalogCache = new Map<string, { catalog: Catalog; mtimeMs: number }>()
 
 export function libraryRoot() {
   const config = useRuntimeConfig()
@@ -355,6 +356,13 @@ function ensureOwner(owner: string) {
 function readCatalog(owner: string): Catalog {
   ensureOwner(owner)
   const path = catalogPath(owner)
+  let mtimeMs = 0
+  try {
+    mtimeMs = existsSync(path) ? statSync(path).mtimeMs : 0
+  } catch { mtimeMs = 0 }
+  const hit = catalogCache.get(owner)
+  if (hit && hit.mtimeMs === mtimeMs && mtimeMs > 0) return hit.catalog
+
   let catalog: Catalog
   try {
     catalog = normalizeCatalog(JSON.parse(readFileSync(path, 'utf8')))
@@ -364,8 +372,11 @@ function readCatalog(owner: string): Catalog {
     }
     catalog = emptyCatalog()
     writeFileSync(path, JSON.stringify(catalog, null, 2))
+    try { mtimeMs = statSync(path).mtimeMs } catch { mtimeMs = Date.now() }
+    catalogCache.set(owner, { catalog, mtimeMs })
     return catalog
   }
+  catalogCache.set(owner, { catalog, mtimeMs })
   return catalog
 }
 
@@ -374,6 +385,14 @@ function writeCatalog(owner: string, catalog: Catalog) {
   const tmp = catalogPath(owner) + '.tmp'
   writeFileSync(tmp, JSON.stringify(catalog, null, 2))
   renameSync(tmp, catalogPath(owner))
+  let mtimeMs = Date.now()
+  try { mtimeMs = statSync(catalogPath(owner)).mtimeMs } catch { /* ignore */ }
+  catalogCache.set(owner, { catalog, mtimeMs })
+}
+
+function invalidateCatalogCache(owner?: string) {
+  if (owner) catalogCache.delete(owner)
+  else catalogCache.clear()
 }
 
 function mutate<T>(owner: string, fn: (catalog: Catalog) => T): Promise<T> {
@@ -1252,6 +1271,17 @@ export function stillThumbFile(owner: string, id: string) {
   return join(ownerRoot(owner), 'stills', `${id}.thumb.jpg`)
 }
 
+/** Sync check — never kicks ffmpeg. Empty string when thumb is missing or stale. */
+export function existingStillThumbPath(owner: string, id: string) {
+  const source = stillPath(owner, id)
+  const dest = stillThumbFile(owner, id)
+  if (!existsSync(source) || !existsSync(dest)) return ''
+  try {
+    if (statSync(dest).mtimeMs >= statSync(source).mtimeMs) return dest
+  } catch { return '' }
+  return ''
+}
+
 function removeStillFiles(owner: string, id: string) {
   rmSync(stillPath(owner, id), { force: true })
   rmSync(stillThumbFile(owner, id), { force: true })