Design constraints:

• The solution path is from the outside opening to the large courtyard in the middle (or the reverse depending on how you look at it)
• no walls meet at a checkerboard / catty corner angle. All corners are solid L-shapes
• no 4x4 empty spaces outside of the entrance and nine courtyards
• no loops where you can return to a point without retracing your original path
• all small courtyards have an entrance and exit and are part of the solve path to the center
• all large courtyards (I'm going to put side goals / easter eggs in them) have only one entrance and are reachable as a branch of the solution path after the small courtyard that they are clockwise from.

If you're curious, the center is a witch / wizard tower covered and filled with plants with a ground floor that's an open arboretum kinda thing with stairs leading upward and a 2-level loft kinda thing up top with the bed / bath etc. When I used to play the sims the occupant would be a completely leveled up witch / wizard. Even if they don't officially add a magic mechanic in Inzoi I'm sure there will be a community mod at some point...

Blueprint / Solution:

EDIT: Removed / rearranged accidental Swastika just to the right of the lower-left large courtyard. original below.