Chevrons no longer need to be built out of a special block - the plugin
picks gate.chevron-count frame blocks evenly spaced around the scanned
ring and remembers their resting material, so a chevron can rest as
plain obsidian (matching the rest of the frame) and only reveal itself
by swapping to gate.chevron-lit-material while dialing/open. Restoring
on close now puts back the original block instead of a fixed material,
so alternating decorative frames (e.g. obsidian/gilded blackstone) are
preserved exactly.
The floor a gate stands on (grass, stone, etc.) is a solid block that
isn't part of the frame, so touching it during the interior flood-fill
was treated as a leak and failed the whole scan. Solid non-frame blocks
now act as boundaries instead of auto-failures; a real gap in the ring
is still caught by the max-iris-blocks size cap.
Sign creation now tells the player exactly why the structure scan failed
(missing frame material, ring not sealed, interior too large, etc.)
instead of one generic error.
Michael Burgess