Add directional arrow hint on map, green grass path border, SELECT/START side by side with larger tap targets

index.html

@@ -116,6 +116,8 @@
       <div class="map-player" id="map-player">🧢</div>
       <!-- interaction speech bubble -->
       <div class="map-talk-hint" id="map-talk-hint" style="display:none">Press A</div>
+      <!-- directional nudge arrow — points player toward NPC -->
+      <div class="map-dir-arrow" id="map-dir-arrow" style="display:none">▶</div>
     </div>
     <div class="map-hud">
       <div class="hud-cell"><div class="hud-lbl">TRAINER</div><div class="hud-val" id="hud-name">ASH</div></div>