feat(player): reposition mobile player focal point

docs/PLAYER_UI.md

@@ -48,8 +48,11 @@ drag changes into one latest intention; release discards that unsent intention.
 The deflection is local input feedback only. The maze redraws only after a
 server-authoritative projection and the browser never predicts a cell change.
 For every projection, the browser translates only the received cells so the
-authoritative `self` cell stays under the centered avatar; this also keeps the
-avatar off a wall when the visible projection reaches a maze boundary.
+authoritative `self` cell stays under the responsive avatar focal point. On a
+portrait phone this is horizontally centered at 30% of the map height; compact
+landscape uses a stable left-biased unobstructed point away from the directional
+pad. This also keeps the avatar off a wall when the visible projection reaches
+a maze boundary, and is recalculated on resize and rotation.
 
 ## Feedback and message rail
 

docs/UI_STYLE.md

@@ -113,8 +113,11 @@ are not MVP requirements.
 
 ## 7. Player map presentation
 
-- Keep the player near the center of the map viewport except where maze
-  boundaries prevent it.
+- Keep the portrait player horizontally centered at approximately 30% of the
+  usable map height, above the directional-pad hand zone. In compact landscape,
+  use the stable left-biased focal point in the largest unobstructed map area.
+  Recalculate it after resize and rotation without moving the authoritative
+  player away from its received `self` cell.
 - Render unknown space as a solid background. Never infer, retain, animate, or
   decorate maze geometry outside the server-provided visible projection.
 - Compute cell size from the current server projection and available map area.