feat: add habit creation, savings tabs, fix dashboard, fix tab order

PulseHealth/Models/SavingsModels.swift

@@ -55,6 +55,30 @@ struct SavingsCategory: Codable, Identifiable {
     }
 }
 
+struct SavingsTransaction: Codable, Identifiable {
+    let id: Int
+    var categoryId: Int?
+    var userId: Int?
+    var amount: Double
+    var type: String  // "deposit" или "withdrawal"
+    var description: String?
+    var date: String?
+    var createdAt: String?
+    var categoryName: String?
+    var userName: String?
+    
+    var isDeposit: Bool { type == "deposit" }
+    
+    enum CodingKeys: String, CodingKey {
+        case id, amount, type, description, date
+        case categoryId = "category_id"
+        case userId = "user_id"
+        case createdAt = "created_at"
+        case categoryName = "category_name"
+        case userName = "user_name"
+    }
+}
+
 struct SavingsStats: Codable {
     var totalBalance: Double?
     var totalDeposits: Double?