feat: add auto-generated captions, speaker-colored progress bar with sync controls, and speaker tooltip to cloud video player (#926)

* feat: webvtt captions inside video with sync controls

* feat: highlight speaker timestamp progress bar

www/app/(app)/transcripts/[transcriptId]/page.tsx

@@ -228,6 +228,8 @@ export default function TranscriptDetails(details: TranscriptDetails) {
                 duration={transcript.data?.cloud_video_duration ?? null}
                 expanded={videoExpanded}
                 onClose={() => setVideoExpanded(false)}
+                sourceLanguage={transcript.data?.source_language ?? null}
+                participants={transcript.data?.participants ?? null}
               />
             </GridItem>
           )}