not all sealed walls are walls. okay

src/mapgen.ts

@@ -99,11 +99,8 @@ class Knife {
         for (let x = 0; x < size.w; x++) {
           const loc = new Point(x, y);
           out += (() => {
-            if (this.#sealedWalls.get(loc)) {
-              return "█";
-            }
             if (this.#map.get(loc).architecture == Architecture.Wall) {
-              return "▓";
+              return this.#sealedWalls.get(loc) ? "█" : "▓";
             }
             let r = this.#regions.get(loc);
             if(typeof r === "number") {