[AI] Adventure map: map guards

A map guard cannot use one replacement still: a loop would flash back to the original artwork. This pass maps full creature idle cycles frame by frame onto adventure-map objects, while retaining the map object’s own shadows and foreground masks.

Skeletons and zombies

Skeletons, Skeleton Warriors, Zombies and Zombie Lords received the first complete cycles. The comparisons are still images; the game uses the full frame sequence.

Necropolis map guards

The work then expanded to Liches, Vampires, Wights and Wraiths, including their upgraded forms. The shared registration tool schedules a loop to the target object’s frame count without copying or changing its JSON interaction definitions.

This covers Necropolis adventure-map guards only; other town creatures will be handled in their own art passes. Assets are enabled in a local private mod and do not modify VCMI source.