feat: expand campaign and refine puzzle visuals and controls

src/tap-queue.js

@@ -0,0 +1,7 @@
+// Store identities, not coordinates: re-check each move against the latest board.
+export class TapQueue {
+  constructor(){this.ids=[];}
+  add(id,activeId){if(id===activeId||this.ids.includes(id))return false;this.ids.push(id);return true;}
+  take(tiles){while(this.ids.length){const id=this.ids.shift(),tile=tiles.find(t=>t.id===id);if(tile)return tile;}return null;}
+  clear(){this.ids.length=0;}
+}