Longer video generation / seamless video continuation for Wan 3.0

Please add support for longer Wan 3.0 video generations, ideally 60 seconds or more.

If native 60-second generation is not possible yet, a seamless “Continue / Extend video” function would be extremely useful.

The continuation should preserve:

• the same characters and faces

• the same reference images

• clothing and hairstyle

• location and lighting

• camera style

• character positions and movement

Right now, creating multiple 30-second clips often causes continuity problems between scenes, even when using the same references.

A 30s + 30s continuation workflow with strong temporal consistency would already be a huge improvement.