fix(tavern): render the reliable procedural room, drop the goblin 'cat'

- The imported .tmx tavern room renders as a block-scatter in the browser (the
  client falls back to the walkable grid, drawing furniture/walls as generic
  blocks). Gate it behind TAVERN_DESIGNED_ROOM=true and default to the hand-built
  procedural tavern (tavernMap.js) — bar + tables + walls — which renders reliably
  through the theme atlas.
- Remove the tavern 'cat': it used the char-goblin sprite, so it read as a green
  monster stuck in the wall. Gone until there's a real critter sprite.

html/js/render/tavernLife.js

@@ -219,12 +219,8 @@
                 }));
         }
 
-        // Cat — a small wandering creature.
-        var catSpot = findFloor(3, rows - 3);
-        this.npcs.push(makeNPC('cat', 'cat', 'char-goblin', catSpot.x, catSpot.y, {
-            label: null, color: '#e8a060', role: 'cat',
-            roamArea: catArea(cols, rows)
-        }));
+        // (No "cat": it used the char-goblin sprite, which read as a green monster stuck in the
+        // wall. Left out until there's an actual pet/critter sprite.)
     };
 
     TavernLife.prototype._pickTarget = function (npc, scene) {