fix: video/audio streaming instead of blob download

Videos and audio now stream directly via URL with auth token query
param instead of downloading entire file into a JS blob. Fixes
playback of large videos (170MB+ was timing out). Images still use
blob URLs. streamUrl() added to filebrowser client and cloud store.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

neode-ui/src/components/cloud/MediaLightbox.vue

@@ -117,6 +117,7 @@ const props = defineProps<{
   startIndex: number
   show: boolean
   fetchBlobUrl: (path: string) => Promise<string>
+  streamUrl?: (path: string) => Promise<string>
 }>()
 
 const emit = defineEmits<{
@@ -167,9 +168,18 @@ async function loadMedia(item: FileBrowserItem) {
     if (cached) {
       currentUrl.value = cached
     } else {
-      const url = await props.fetchBlobUrl(item.path)
-      urlCache.set(item.path, url)
-      currentUrl.value = url
+      // Use streaming URL for video/audio (avoids downloading entire file into blob)
+      // Use blob URL for images (needed for rendering)
+      const isStreamable = isVideoFile(item) || isAudioFile(item)
+      if (isStreamable && props.streamUrl) {
+        const url = await props.streamUrl(item.path)
+        urlCache.set(item.path, url)
+        currentUrl.value = url
+      } else {
+        const url = await props.fetchBlobUrl(item.path)
+        urlCache.set(item.path, url)
+        currentUrl.value = url
+      }
     }
   } catch {
     mediaError.value = true