Last night's work

mods/ITEMS/vox_structural/init.lua

@@ -1,4 +1,5 @@
 -- Vox Structural System
+vox_structural = {} -- Initialize the global table for the mod
 
 local structural_shapes = {}
 
@@ -14,10 +15,16 @@ function vox_structural.register_block_with_shapes(modname, base_block, options)
         local shape_node_name = modname .. ":" .. base_block .. "_" .. shape_name
 
         -- Create the new node definition
-        local new_node_def = table.copy(minetest.registered_nodes[base_node_name])
-        new_node_def.description = new_node_def.description .. " (" .. shape_name:gsub("_", " ") .. ")"
-        new_node_def.tiles = shape_def.tiles or new_node_def.tiles
-        new_node_def.groups = table.copy(new_node_def.groups or {})
+        local base_def = minetest.registered_nodes[base_node_name]
+        if not base_def then
+            minetest.log("error", "[vox_structural] Base node not found: " .. base_node_name)
+            return
+        end
+
+        local new_node_def = table.copy(base_def)
+        new_node_def.description = base_def.description .. " (" .. shape_name:gsub("_", " ") .. ")"
+        new_node_def.tiles = shape_def.tiles or base_def.tiles
+        new_node_def.groups = table.copy(base_def.groups or {})
         new_node_def.groups.shape = 1 -- Add a "shape" group
 
         -- Apply shape-specific overrides
@@ -75,13 +82,7 @@ vox_structural.register_shape("pressure_plate", {
     },
 })
 
--- Button
-
--- Post
-
-
--- ------------------
--- Register door shapes with variants
+-- ---------------------------- Doors and Variants -------------------------- --
 vox_structural.register_shape("door_flush", {
     override = {
         drawtype = "mesh",