Hide the extend last-frame preview by default on xAIGen.

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

pages/index.vue

@@ -1311,8 +1311,22 @@
               </div>
               <button type="button" class="text-xs text-zinc-400 hover:text-white" @click="closeExtend">Close</button>
             </div>
-            <div class="overflow-hidden rounded-xl bg-black/40">
-              <img v-if="lastFrameUrl" :src="lastFrameUrl" alt="Last frame" class="max-h-48 w-full object-contain">
+            <div class="relative overflow-hidden rounded-xl bg-black/40" style="min-height: 8rem">
+              <img
+                v-if="lastFrameUrl && !hideExtendLastFrame"
+                :src="lastFrameUrl"
+                alt="Last frame"
+                class="max-h-48 w-full object-contain"
+              >
+              <button
+                v-else-if="hideExtendLastFrame"
+                type="button"
+                class="sensitive-glow flex min-h-[8rem] w-full flex-col items-center justify-center gap-1 px-3 py-8 text-amber-100"
+                @click="revealExtendLastFrame"
+              >
+                <span class="text-sm font-medium">Last frame ready</span>
+                <span class="text-xs text-amber-100/80">Click to reveal · preview hidden</span>
+              </button>
               <p v-else class="px-3 py-8 text-center text-xs text-zinc-500">
                 {{ lastFrameLoading ? 'Reading last frame…' : 'Last frame preview unavailable' }}
               </p>
@@ -2448,6 +2462,7 @@ const extendPrompt = ref('')
 const extendDuration = ref(5)
 const lastFrameUrl = ref('')
 const lastFrameLoading = ref(false)
+const lastFrameRevealed = ref(false)
 const watchingLibrary = ref(false)
 let lastFrameObjectUrl = ''
 let lastFrameGen = 0
@@ -2801,6 +2816,11 @@ const videoModelHint = computed(() => {
 const frameCount = computed(() => Math.max(5, Math.floor(duration.value * fps.value)))
 const cfgPct = computed(() => ((cfg.value - CFG_MIN) / (CFG_MAX - CFG_MIN)) * 100)
 const currentClip = computed(() => clips.value.find(clip => clip.id === currentClipId.value))
+const hideExtendLastFrame = computed(() => (
+  showPrivacyToggles.value
+  && !lastFrameRevealed.value
+  && (hideInputPreview.value || hideThumbnail.value || currentClip.value?.hideThumbnail === true)
+))
 const canExtend = computed(() => Boolean(
   videoUrl.value
   && !lockedSave.value
@@ -3731,6 +3751,12 @@ watch(hideThumbnail, (value) => {
   } catch { /* ignore */ }
 })
 
+watch(hideExtendLastFrame, (hidden) => {
+  if (hidden || !extendOpen.value) return
+  const id = currentClipId.value || clipIdFromPlayer()
+  if (id && !lastFrameUrl.value && !lastFrameLoading.value) void loadLastFrame(id)
+})
+
 watch(withSound, (value) => {
   try {
     localStorage.setItem('aigen-generate-sound', String(value))
@@ -5153,6 +5179,7 @@ function concealFromOutsideTap(event: Event) {
   if (concealEditOutput.value && !editAwaitingReveal.value && !editLockedSave.value && editResultUrl.value) {
     editAwaitingReveal.value = true
   }
+  if (showPrivacyToggles.value) lastFrameRevealed.value = false
 }
 
 function concealAndPause() {
@@ -5399,6 +5426,7 @@ function closeExtend() {
   lastFrameGen += 1
   extendOpen.value = false
   lastFrameLoading.value = false
+  lastFrameRevealed.value = false
   if (lastFrameObjectUrl) {
     URL.revokeObjectURL(lastFrameObjectUrl)
     lastFrameObjectUrl = ''
@@ -5406,6 +5434,29 @@ function closeExtend() {
   lastFrameUrl.value = ''
 }
 
+async function loadLastFrame(id: string) {
+  lastFrameLoading.value = true
+  const gen = ++lastFrameGen
+  try {
+    const blob = await $fetch<Blob>(`/api/library/clips/${id}/last-frame`, { responseType: 'blob' })
+    if (gen !== lastFrameGen) return
+    if (lastFrameObjectUrl) URL.revokeObjectURL(lastFrameObjectUrl)
+    lastFrameObjectUrl = URL.createObjectURL(blob)
+    lastFrameUrl.value = lastFrameObjectUrl
+  } catch (error: any) {
+    if (gen !== lastFrameGen) return
+    toast(error?.data?.statusMessage || 'Could not extract the last frame')
+  } finally {
+    if (gen === lastFrameGen) lastFrameLoading.value = false
+  }
+}
+
+function revealExtendLastFrame() {
+  lastFrameRevealed.value = true
+  const id = currentClipId.value || clipIdFromPlayer()
+  if (id && !lastFrameUrl.value && !lastFrameLoading.value) void loadLastFrame(id)
+}
+
 async function openExtend(item?: LibraryClip) {
   if (item) openClip(item)
   const id = item?.id || clipIdFromPlayer()
@@ -5418,23 +5469,12 @@ async function openExtend(item?: LibraryClip) {
   extendPrompt.value = clip?.prompt || prompt.value
   extendDuration.value = clampDuration(duration.value)
   extendLoraStack.value = readLoraStack(clip)
+  lastFrameRevealed.value = false
   extendOpen.value = true
-  lastFrameLoading.value = true
   lastFrameUrl.value = ''
+  lastFrameLoading.value = false
   player.value?.pause()
-  const gen = ++lastFrameGen
-  try {
-    const blob = await $fetch<Blob>(`/api/library/clips/${id}/last-frame`, { responseType: 'blob' })
-    if (gen !== lastFrameGen) return
-    if (lastFrameObjectUrl) URL.revokeObjectURL(lastFrameObjectUrl)
-    lastFrameObjectUrl = URL.createObjectURL(blob)
-    lastFrameUrl.value = lastFrameObjectUrl
-  } catch (error: any) {
-    if (gen !== lastFrameGen) return
-    toast(error?.data?.statusMessage || 'Could not extract the last frame')
-  } finally {
-    if (gen === lastFrameGen) lastFrameLoading.value = false
-  }
+  if (!hideExtendLastFrame.value) await loadLastFrame(id)
 }
 
 async function generateExtension() {