Replace hat emoji with player.png sprite sheet — directional walk animations from 24-frame sheet

index.html

@@ -109,7 +109,7 @@
         <div class="map-npc" id="map-npc"></div>
       </div>
       <!-- Player stays fixed to viewport, only Y moves -->
-      <div class="map-player" id="map-player">🧢</div>
+      <div class="map-player" id="map-player"></div>
       <!-- Hints overlay the viewport, not the world -->
       <div class="map-talk-hint" id="map-talk-hint" style="display:none"><span class="hint-pc">Press E</span><span class="hint-touch">Press A</span></div>
       <div class="map-dir-arrow" id="map-dir-arrow" style="display:none">▶</div>