feat: add the user ID claim to JWT Token

Author: vianavitor-dev

src/main/java/com/vianavitor/simplelibrarygame/controller/auth/AuthenticationController.java

@@ -52,7 +52,7 @@ public ResponseEntity<ApiResponse<?>> login(@RequestBody @Valid LoginRequest req
         }
 
         user.setLastLogin(LocalDate.now());
-        repository.save(user);
+        user = repository.save(user);
 
         String token = tokenService.generateToken(user);
         return ResponseEntity.ok(ApiResponse.success(token, "Login successful", req.getRequestURI()));

src/main/java/com/vianavitor/simplelibrarygame/service/auth/TokenService.java

@@ -33,6 +33,7 @@ public String generateToken(User user) throws JWTCreationException {
                 .withSubject(user.getUsername())
                 .withExpiresAt(this.getExpireAt())
                 .withClaim("role", role)
+                .withClaim("id", user.getId())
                 .sign(algorithm);
     }