feat: handle spawn-npc socket event with cap and position logic

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

server/src/network/SocketServer.ts

@@ -1,9 +1,10 @@
 import { Server } from 'socket.io';
 import type http from 'http';
 import type { ClientEvents, ServerEvents, PlayerInput, Position, Movement, PlayerControlled, Appearance } from '@dflike/shared';
-import { Direction } from '@dflike/shared';
+import { Direction, MAX_NPC_COUNT } from '@dflike/shared';
 import { generateRandomAppearance } from '../spawner/appearanceGenerator.js';
 import type { GameLoop } from '../game/GameLoop.js';
+import { spawnNPC } from '../game/spawner.js';
 import { serializeWorldState, serializeStateUpdate } from './stateSerializer.js';
 
 export class SocketServer {
@@ -58,6 +59,16 @@ export class SocketServer {
         this.handleInput(playerId, entity, input);
       });
 
+      // Handle NPC spawn requests
+      socket.on('spawn-npc', (data: { x: number; y: number }) => {
+        const npcCount = world.query('npcBrain').length;
+        if (npcCount >= MAX_NPC_COUNT) return;
+
+        const target = map.findNearestWalkable(data.x, data.y, 3)
+          ?? map.getRandomWalkable();
+        spawnNPC(world, map, target);
+      });
+
       // Handle disconnect
       socket.on('disconnect', () => {
         console.log(`Player disconnected: ${playerId}`);