Record original-alignment implementation and traceability checkpoint

Capture current source, content data, tests, asset licenses, and original-specification traceability. Original implementation remains incomplete. The accepted matching UI generation passed 154 suites and 12,253 checks, with eight rendered staff-contract screens reviewed. Latest native Windows and full-original acceptance remain outstanding.

scripts/ui/inactive_layer_rooms.gd

@@ -0,0 +1,18 @@
+extends Node2D
+
+# Reuse the same room art at low opacity; this layer has no input handlers.
+const PixelArt := preload("res://scripts/ui/pixel_tower_art.gd")
+var rooms: Array[Dictionary] = []
+var pixel_scale := 1.0
+var dungeon: Texture2D
+var town: Texture2D
+func _ready() -> void:
+	modulate = Color(1,1,1,0.22)
+	texture_filter = CanvasItem.TEXTURE_FILTER_NEAREST
+func _draw() -> void:
+	for room: Dictionary in rooms:
+		if bool(room.get(&"building", false)): continue
+		if bool(room.get(&"legacy_stair", false)):
+			PixelArt.stairs(self,room[&"rect"],room[&"rect"].size.x/14.0,true,true)
+			continue
+		PixelArt.room(self,room[&"rect"],room[&"definition_id"],pixel_scale,dungeon,town,true,room[&"origin_x"],{})