Implement base controller for shared functionality; update existing controllers to inherit from BaseController and adjust user ID handling. Add JWT authentication support and modify item retrieval methods in GameDataController.

Controllers/SkillController.cs

@@ -3,14 +3,11 @@ using PetCompanion.Services;
 
 namespace PetCompanion.Controllers
 {
-    [ApiController]
-    [Route("api/v1/[controller]")]
-    public class SkillController : ControllerBase
+    public class SkillController : BaseController
     {
         private readonly SkillService _skillService;
         private readonly PetSkillService _petSkillService;
         private readonly ILogger<SkillController> _logger;
-        private Guid userId = Guid.Parse("f5f4b3b3-3b7b-4b7b-8b7b-7b7b7b7b7b7b");
 
         public SkillController(
             ILogger<SkillController> logger,
@@ -34,7 +31,7 @@ namespace PetCompanion.Controllers
         {
             try
             {
-                var skills = _petSkillService.GetPetSkills(petId, userId.ToString());
+                var skills = _petSkillService.GetPetSkills(petId, userId);
                 return Ok(skills);
             }
             catch (Exception ex)
@@ -48,7 +45,7 @@ namespace PetCompanion.Controllers
         {
             try
             {
-                var result = _petSkillService.UpgradeSkill(petId, userId.ToString(), skillId);
+                var result = _petSkillService.UpgradeSkill(petId, userId, skillId);
                 return Ok(result);
             }
             catch (Exception ex)