feat(auth): endpoint /auth/me, cockpits renomeados e menu de logout

- GET /api/v1/auth/me retorna perfil real do ERP (vw_representantes)
- Contrato UserProfile adicionado ao shared api-interface
- Hook useCurrentUser() no frontend consome o endpoint
- Cockpit rafael → rep, sandra → supervisor (pastas e componentes)
- Topbar exibe iniciais do usuário e dropdown com nome, role e "Sair"
- Logout limpa token e recarrega para voltar ao DevLogin

Co-Authored-By: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>

libs/shared/api-interface/src/lib/auth.contract.ts

@@ -19,6 +19,14 @@ export const AuthTokenResponseSchema = z.object({
   expiresIn: z.number().int().positive(),
 });
 
+export const UserProfileSchema = z.object({
+  codVendedor: z.number().int(),
+  nome: z.string(),
+  role: JwtRoleSchema,
+  idEmpresa: z.number().int(),
+});
+
 export type DevTokenRequest = z.infer<typeof DevTokenRequestSchema>;
 export type AuthTokenResponse = z.infer<typeof AuthTokenResponseSchema>;
 export type JwtRole = z.infer<typeof JwtRoleSchema>;
+export type UserProfile = z.infer<typeof UserProfileSchema>;