Video Player Window Controls
The embedded video window now separates site window controls from YouTube and Bilibili controls.
# Video Player Window Controls
This update fixes the XP-style video player window so site-level controls no longer fight with YouTube or Bilibili's own player controls.
## Changes
- The site fullscreen button is now a titlebar maximize/restore icon, and it can be toggled again or restored with Escape.
- The site no longer fullscreen-requests the iframe first; YouTube and Bilibili native fullscreen remains inside the embedded player.
- The public videos API keeps returning the real `original_url`, so Open Original goes to the source page instead of an empty or embed-only link.
- The iframe top and bottom information bars are covered by the site by default and revealed when the user moves over the player area.
- Transparent click blockers protect bottom blank areas, and video-card play buttons now only use the actual button as their hit target.
