feat: wire HuntingController/HuntingModule and enrich current-location with monster pool

Registers HuntingModule (POST /api/hunts) into the DI graph alongside its
new entities, and adds possibleMonsters (enabled LocationMonster pool,
weight-descending, empty when hunting is disabled) to
WorldService.getCurrentLocation. Also updates the pre-existing
DB-less app.e2e-spec.ts to override HuntingModule the same way the other
feature modules already are, since it now needs a real DataSource.

apps/api/src/world/world.module.ts

@@ -1,6 +1,8 @@
 import { Module } from '@nestjs/common';
 import { TypeOrmModule } from '@nestjs/typeorm';
 import { Character } from '../characters/entities/character.entity';
+import { LocationMonster } from '../monsters/entities/location-monster.entity';
+import { MonsterDefinition } from '../monsters/entities/monster-definition.entity';
 import { TravelModule } from '../travel/travel.module';
 import { LocationConnection } from './entities/location-connection.entity';
 import { WorldController } from './world.controller';
@@ -8,7 +10,12 @@ import { WorldService } from './world.service';
 
 @Module({
   imports: [
-    TypeOrmModule.forFeature([Character, LocationConnection]),
+    TypeOrmModule.forFeature([
+      Character,
+      LocationConnection,
+      LocationMonster,
+      MonsterDefinition,
+    ]),
     TravelModule,
   ],
   controllers: [WorldController],