Now I can see the issue. When progress hits 100%, the project status stays "processing" in the detail view because the ProjectDetail component has its own local progress state and doesn't update the project's status to "complete". Also when complete, it only shows a play/pause button but no actual video player. Let me also check the mock data and types:

Now I understand the full problem. There are two issues:

1. In ProjectDetail: The local progress state reaches 100% but the project.status prop never changes from "processing" to "complete" - so it stays stuck showing the spinner forever at 100%.
2. In Dashboard: The dashboard has its own progress simulation that does update status, but the ProjectDetail receives a stale project object that never gets updated.

The fix: ProjectDetail needs to track its own status derived from progress, and when complete, show a proper video preview with a sample cinematic video.

The fix addresses two core problems: (1) the ProjectDetail component now tracks a localStatus that automatically transitions from "processing" to "complete" when progress reaches 100%, and (2) once complete, it renders an actual <video> player (using the open-source Big Buck Bunny sample) with play/pause, restart, and fullscreen controls instead of just a static spinner. A circular SVG progress ring replaces the old plain spinner during processing, and a brief "Movie generation complete!" success banner appears on transition.

Let me read the rest of the file to see the Export button code:

I can see the problem. The "Export Video" button on line 167 has no onClick handler -- it's just a static button that does nothing. I need to add a proper download function that fetches the video and triggers a file download.

Now wire the onClick and add a loading state to the Export button:

The "Export Video" button now has a proper onClick handler that fetches the sample video as a blob and triggers a browser file download with the filename {ProjectTitle}_OpenCinemaAI.mp4. It also shows a spinner with "Downloading..." text while the fetch is in progress, and falls back to opening the video URL in a new tab if the blob download fails for any reason.