feat(sprint4): achievements, community goals, hall of fame, profile

4 modules: achievement (15 succès, 5 catégories, 3 paliers), community
(objectifs collectifs + boosts globaux), halloffame (classement mensuel),
profile (titre actif + badges + % progression).

Event-driven: combat/forge/craft émettent des events via @nestjs/event-emitter.
Character entity: +activeTitle, +totalGoldEarned.
Seeds: 15 achievements + 3 community goals.

src/craft/craft.service.ts

@@ -1,6 +1,7 @@
 import { Injectable, BadRequestException, NotFoundException } from '@nestjs/common';
 import { InjectRepository } from '@nestjs/typeorm';
 import { Repository } from 'typeorm';
+import { EventEmitter2 } from '@nestjs/event-emitter';
 import { Recipe } from './recipe.entity';
 import { CraftJob } from './craft-job.entity';
 import { Character } from '../character/entities/character.entity';
@@ -19,6 +20,7 @@ export class CraftService {
     private readonly characterRepository: Repository<Character>,
     private readonly itemService: ItemService,
     private readonly materialService: MaterialService,
+    private readonly eventEmitter: EventEmitter2,
   ) {}
 
   findAllRecipes() {
@@ -113,6 +115,13 @@ export class CraftService {
     job.collected = true;
     await this.craftJobRepository.save(job);
 
+    // Emit achievement event
+    this.eventEmitter.emit('achievement.check', {
+      characterId: char.id,
+      type: 'craft_completed',
+      increment: 1,
+    });
+
     return {
       collected: true,
       item: charItem.item,