feat: multi-usuário com autenticação JWT

- Tabela `profiles` + coluna `profile_id` em todas as entidades
  (categories, transactions, recurring_expenses, accounts, player_profile,
   xp_events, player_quests, player_achievements, player_cosmetics)
- Dados existentes migrados para profile_id = 1 (Manoel)
- CLI `./api create-user --name <n> --password <p>` cria perfil com
  seed de categorias e player_profile; faz upsert de senha se já existir
- Auth substituída: cookie+APP_PASSWORD → JWT Bearer 24h (HS256)
- Middleware RequireAuth injeta profile_id no context de todas as rotas
- Todos os repositórios filtram por profile_id do context
- Endpoints: POST /api/auth/login, GET /api/auth/me,
  POST /api/auth/change-password, POST /api/logout
- Frontend: auth store usa localStorage (fc_token/fc_profile),
  api.ts envia Authorization header, LoginView usa campo name
- SettingsView reescrita com troca de senha e logout
- docker-compose.yml: remove APP_USERNAME/APP_PASSWORD, adiciona JWT_SECRET

Co-Authored-By: Claude Sonnet 4.6 <[email protected]>

docker-compose.yml

@@ -20,8 +20,7 @@ services:
     environment:
       DATABASE_URL: postgres://financeiro:${POSTGRES_PASSWORD:-financeiro}@postgres:5432/financeiro?sslmode=disable
       PORT: 8080
-      APP_USERNAME: ${APP_USERNAME}
-      APP_PASSWORD: ${APP_PASSWORD}
+      JWT_SECRET: ${JWT_SECRET:-change-me-in-production}
     depends_on:
       postgres:
         condition: service_healthy