Add skill management system: implement Skill and PetSkill models, create SkillController, and update ApplicationDbContext for skills

Models/PetStats.cs

@@ -1,5 +1,6 @@
 using System.ComponentModel.DataAnnotations;
 using System.ComponentModel.DataAnnotations.Schema;
+using System.Text.Json.Serialization;
 
 namespace PetCompanion.Models
 {
@@ -7,10 +8,20 @@ namespace PetCompanion.Models
     {
         [Key, ForeignKey("Pet")]
         public string PetId { get; set; }
+
+        // Display stats
         public int Intelligence { get; set; }
         public int Strength { get; set; }
         public int Charisma { get; set; }
 
+        // Hidden stats (not displayed to the API)
+        [JsonIgnore]
+        public int Luck { get; set; } // used for rarity of item finds
+        [JsonIgnore]
+        public int Agility { get; set; } // used for combat
+        [JsonIgnore]
+        public int Perception { get; set; } // used for number of itens found
+
         public int MaxIntelligence { get; set; }
         public int MaxStrength { get; set; }
         public int MaxCharisma { get; set; }
@@ -67,6 +78,10 @@ namespace PetCompanion.Models
             stats.MaxStrength = stats.Strength;
             stats.MaxCharisma = stats.Charisma;
 
+            stats.Luck = 1;
+            stats.Agility = 1;
+            stats.Perception = 1;
+
             return stats;
         }
     }