refactor: remove rest POIs from map generation, persistence, and client rendering

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

server/src/map/mapGenerator.ts

@@ -7,7 +7,6 @@ export interface GeneratedMap {
   trunkDecorations: number[];
   obstacles: Set<string>;
   foodPositions: { x: number; y: number }[];
-  restPositions: { x: number; y: number }[];
   resourceTiles: Array<{ x: number; y: number; resourceType: string }>;
 }
 
@@ -42,14 +41,9 @@ export function generateMap(
     { x: Math.floor(width * 0.25), y: Math.floor(height * 0.25) },
     { x: Math.floor(width * 0.75), y: Math.floor(height * 0.75) },
   ];
-  const restPositions = [
-    { x: Math.floor(width * 0.75), y: Math.floor(height * 0.25) },
-    { x: Math.floor(width * 0.25), y: Math.floor(height * 0.75) },
-  ];
-
   // Reserve positions that must stay clear
   const reserved = new Set<string>();
-  for (const p of [...foodPositions, ...restPositions]) {
+  for (const p of [...foodPositions]) {
     reserved.add(`${p.x},${p.y}`);
   }
 
@@ -157,5 +151,5 @@ export function generateMap(
     }
   }
 
-  return { terrain, decorations, trunkDecorations, obstacles, foodPositions, restPositions, resourceTiles };
+  return { terrain, decorations, trunkDecorations, obstacles, foodPositions, resourceTiles };
 }