Complete DTO Layer Implementation - Fix Controller Compilation

- Created 37 individual DTO classes across all domains
- Common DTOs: ErrorResponseDto, SuccessResponseDto for consistent API responses
- Player DTOs: 10 classes for profile, castle, VIP, teleportation, resources, combat prep
- Combat DTOs: 11 classes for field interception system, marches, battles, analytics
- Alliance DTOs: 3 classes for status, coalitions, research advancement
- Kingdom DTOs: 4 classes for status, KvK events, voting, tax distribution
- Purchase DTOs: 6 classes for validation, processing, balance monitoring, fraud detection

All DTOs include proper validation attributes, comprehensive XML documentation,
and support for core innovations (field interception, anti-pay-to-win, coalitions).

Controllers should now compile successfully - ready for compilation testing.

ShadowedRealmsMobile/src/server/ShadowedRealms.Shared/DTOs/Alliance/AllianceStatusResponseDto.cs

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+/*
+ * File: D:\shadowed-realms-mobile\ShadowedRealmsMobile\src\server\ShadowedRealms.Shared\DTOs\Alliance\AllianceStatusResponseDto.cs
+ * Created: 2025-10-19
+ * Last Modified: 2025-10-19
+ * Description: Response DTO for alliance status information
+ * Last Edit Notes: Individual file implementation for alliance status and coalition data
+ */
+
+namespace ShadowedRealms.Shared.DTOs.Alliance
+{
+    /// <summary>
+    /// Response DTO for alliance status information
+    /// </summary>
+    public class AllianceStatusResponseDto
+    {
+        /// <summary>
+        /// Alliance identifier
+        /// </summary>
+        public int AllianceId { get; set; }
+
+        /// <summary>
+        /// Alliance name
+        /// </summary>
+        public string AllianceName { get; set; } = string.Empty;
+
+        /// <summary>
+        /// Current member count
+        /// </summary>
+        public int MemberCount { get; set; }
+
+        /// <summary>
+        /// Alliance level and progression
+        /// </summary>
+        public Dictionary<string, object> AllianceLevel { get; set; } = new();
+
+        /// <summary>
+        /// Current coalition memberships
+        /// </summary>
+        public List<Dictionary<string, object>> CoalitionMemberships { get; set; } = new();
+
+        /// <summary>
+        /// Alliance territory information
+        /// </summary>
+        public Dictionary<string, object> Territory { get; set; } = new();
+
+        /// <summary>
+        /// Research progress across all trees
+        /// </summary>
+        public Dictionary<string, object> ResearchProgress { get; set; } = new();
+
+        /// <summary>
+        /// When status was last updated
+        /// </summary>
+        public DateTime LastUpdated { get; set; }
+    }
+}

ShadowedRealmsMobile/src/server/ShadowedRealms.Shared/DTOs/Alliance/CoalitionCreationRequestDto.cs

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+/*
+ * File: D:\shadowed-realms-mobile\ShadowedRealmsMobile\src\server\ShadowedRealms.Shared\DTOs\Alliance\CoalitionCreationRequestDto.cs
+ * Created: 2025-10-19
+ * Last Modified: 2025-10-19
+ * Description: Request DTO for coalition creation
+ * Last Edit Notes: Individual file implementation for coalition creation input validation
+ */
+
+using System.ComponentModel.DataAnnotations;
+
+namespace ShadowedRealms.Shared.DTOs.Alliance
+{
+    /// <summary>
+    /// Request DTO for coalition creation
+    /// </summary>
+    public class CoalitionCreationRequestDto
+    {
+        /// <summary>
+        /// Name for the new coalition
+        /// </summary>
+        [Required]
+        [StringLength(100)]
+        public string CoalitionName { get; set; } = string.Empty;
+
+        /// <summary>
+        /// Initial member alliances
+        /// </summary>
+        [Required]
+        public List<int> MemberAlliances { get; set; } = new();
+
+        /// <summary>
+        /// Coalition purpose and objectives
+        /// </summary>
+        [StringLength(500)]
+        public string? Purpose { get; set; }
+
+        /// <summary>
+        /// Coalition parameters and settings
+        /// </summary>
+        public Dictionary<string, object>? CoalitionParameters { get; set; }
+    }
+}

ShadowedRealmsMobile/src/server/ShadowedRealms.Shared/DTOs/Alliance/ResearchAdvancementRequestDto.cs

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+/*
+ * File: D:\shadowed-realms-mobile\ShadowedRealmsMobile\src\server\ShadowedRealms.Shared\DTOs\Alliance\ResearchAdvancementRequestDto.cs
+ * Created: 2025-10-19
+ * Last Modified: 2025-10-19
+ * Description: Request DTO for research advancement
+ * Last Edit Notes: Individual file implementation for research advancement input validation
+ */
+
+using System.ComponentModel.DataAnnotations;
+
+namespace ShadowedRealms.Shared.DTOs.Alliance
+{
+    /// <summary>
+    /// Request DTO for research advancement
+    /// </summary>
+    public class ResearchAdvancementRequestDto
+    {
+        /// <summary>
+        /// Research tree branch (Military, Economic, Technology)
+        /// </summary>
+        [Required]
+        [StringLength(50)]
+        public string ResearchBranch { get; set; } = string.Empty;
+
+        /// <summary>
+        /// Specific research item to advance
+        /// </summary>
+        [Required]
+        [StringLength(100)]
+        public string ResearchItem { get; set; } = string.Empty;
+
+        /// <summary>
+        /// Resource allocation for research
+        /// </summary>
+        [Required]
+        public Dictionary<string, decimal> ResourceAllocation { get; set; } = new();
+
+        /// <summary>
+        /// Priority level for research
+        /// </summary>
+        [Range(1, 5)]
+        public int Priority { get; set; } = 3;
+    }
+}

ShadowedRealmsMobile/src/server/ShadowedRealms.Shared/DTOs/Combat/BattleExecutionResponseDto.cs

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+/*
+ * File: D:\shadowed-realms-mobile\ShadowedRealmsMobile\src\server\ShadowedRealms.Shared\DTOs\Combat\BattleExecutionResponseDto.cs
+ * Created: 2025-10-19
+ * Last Modified: 2025-10-19
+ * Description: Response DTO for battle execution results
+ * Last Edit Notes: Individual file implementation for battle execution results
+ */
+
+namespace ShadowedRealms.Shared.DTOs.Combat
+{
+    /// <summary>
+    /// Response DTO for battle execution results
+    /// </summary>
+    public class BattleExecutionResponseDto
+    {
+        /// <summary>
+        /// Unique battle identifier
+        /// </summary>
+        public int BattleId { get; set; }
+
+        /// <summary>
+        /// Attacking player in the battle
+        /// </summary>
+        public int AttackerPlayerId { get; set; }
+
+        /// <summary>
+        /// Defending player in the battle
+        /// </summary>
+        public int DefenderPlayerId { get; set; }
+
+        /// <summary>
+        /// Winner of the battle
+        /// </summary>
+        public string Winner { get; set; } = string.Empty;
+
+        /// <summary>
+        /// Complete battle results and statistics
+        /// </summary>
+        public Dictionary<string, object> BattleResults { get; set; } = new();
+
+        /// <summary>
+        /// Experience gains for participants
+        /// </summary>
+        public Dictionary<string, object> ExperienceGains { get; set; } = new();
+
+        /// <summary>
+        /// Resource transfers from battle
+        /// </summary>
+        public Dictionary<string, object> ResourceTransfers { get; set; } = new();
+
+        /// <summary>
+        /// When the battle was completed
+        /// </summary>
+        public DateTime BattleTime { get; set; }
+    }
+}

ShadowedRealmsMobile/src/server/ShadowedRealms.Shared/DTOs/Combat/BattleReplayResponseDto.cs

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+/*
+ * File: D:\shadowed-realms-mobile\ShadowedRealmsMobile\src\server\ShadowedRealms.Shared\DTOs\Combat\BattleReplayResponseDto.cs
+ * Created: 2025-10-19
+ * Last Modified: 2025-10-19
+ * Description: Response DTO for battle replay data
+ * Last Edit Notes: Individual file implementation for battle replay information
+ */
+
+namespace ShadowedRealms.Shared.DTOs.Combat
+{
+    /// <summary>
+    /// Response DTO for battle replay data
+    /// </summary>
+    public class BattleReplayResponseDto
+    {
+        /// <summary>
+        /// Battle ID for the replay
+        /// </summary>
+        public int BattleId { get; set; }
+
+        /// <summary>
+        /// Complete battle replay data
+        /// </summary>
+        public Dictionary<string, object> ReplayData { get; set; } = new();
+
+        /// <summary>
+        /// Battle participants information
+        /// </summary>
+        public Dictionary<string, object> Participants { get; set; } = new();
+
+        /// <summary>
+        /// Battle timeline and phases
+        /// </summary>
+        public List<Dictionary<string, object>> BattleTimeline { get; set; } = new();
+
+        /// <summary>
+        /// When the replay was generated
+        /// </summary>
+        public DateTime ReplayGeneratedAt { get; set; }
+    }
+}

ShadowedRealmsMobile/src/server/ShadowedRealms.Shared/DTOs/Combat/CombatAnalyticsResponseDto.cs

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+/*
+ * File: D:\shadowed-realms-mobile\ShadowedRealmsMobile\src\server\ShadowedRealms.Shared\DTOs\Combat\CombatAnalyticsResponseDto.cs
+ * Created: 2025-10-19
+ * Last Modified: 2025-10-19
+ * Description: Response DTO for combat analytics
+ * Last Edit Notes: Individual file implementation for combat analytics data
+ */
+
+namespace ShadowedRealms.Shared.DTOs.Combat
+{
+    /// <summary>
+    /// Response DTO for combat analytics
+    /// </summary>
+    public class CombatAnalyticsResponseDto
+    {
+        /// <summary>
+        /// Player ID for analytics
+        /// </summary>
+        public int PlayerId { get; set; }
+
+        /// <summary>
+        /// Timeframe covered by analytics
+        /// </summary>
+        public int TimeframeDays { get; set; }
+
+        /// <summary>
+        /// Complete combat analytics data
+        /// </summary>
+        public Dictionary<string, object> Analytics { get; set; } = new();
+
+        /// <summary>
+        /// Comparative data against kingdom averages
+        /// </summary>
+        public Dictionary<string, object>? KingdomComparison { get; set; }
+
+        /// <summary>
+        /// Performance trends over time
+        /// </summary>
+        public Dictionary<string, object>? Trends { get; set; }
+
+        /// <summary>
+        /// When analytics were generated
+        /// </summary>
+        public DateTime GeneratedAt { get; set; }
+    }
+}

ShadowedRealmsMobile/src/server/ShadowedRealms.Shared/DTOs/Combat/CombatEffectivenessRequestDto.cs

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+/*
+ * File: D:\shadowed-realms-mobile\ShadowedRealmsMobile\src\server\ShadowedRealms.Shared\DTOs\Combat\CombatEffectivenessRequestDto.cs
+ * Created: 2025-10-19
+ * Last Modified: 2025-10-19
+ * Description: Request DTO for combat effectiveness analysis
+ * Last Edit Notes: Individual file implementation for combat effectiveness analysis input validation
+ */
+
+using System.ComponentModel.DataAnnotations;
+
+namespace ShadowedRealms.Shared.DTOs.Combat
+{
+    /// <summary>
+    /// Request DTO for combat effectiveness analysis
+    /// </summary>
+    public class CombatEffectivenessRequestDto
+    {
+        /// <summary>
+        /// Timeframe for effectiveness analysis
+        /// </summary>
+        [Range(1, 365)]
+        public int TimeframeDays { get; set; } = 30;
+
+        /// <summary>
+        /// Include comparison with spending patterns
+        /// </summary>
+        public bool IncludeSpendingAnalysis { get; set; } = true;
+
+        /// <summary>
+        /// Specific combat types to analyze
+        /// </summary>
+        public List<string>? CombatTypes { get; set; }
+
+        /// <summary>
+        /// Additional analysis parameters
+        /// </summary>
+        public Dictionary<string, object>? AnalysisParameters { get; set; }
+    }
+}

ShadowedRealmsMobile/src/server/ShadowedRealms.Shared/DTOs/Combat/DragonValidationRequestDto.cs

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+/*
+ * File: D:\shadowed-realms-mobile\ShadowedRealmsMobile\src\server\ShadowedRealms.Shared\DTOs\Combat\DragonValidationRequestDto.cs
+ * Created: 2025-10-19
+ * Last Modified: 2025-10-19
+ * Description: Request DTO for dragon validation in combat
+ * Last Edit Notes: Individual file implementation for dragon validation input
+ */
+
+using System.ComponentModel.DataAnnotations;
+
+namespace ShadowedRealms.Shared.DTOs.Combat
+{
+    /// <summary>
+    /// Request DTO for dragon validation in combat
+    /// </summary>
+    public class DragonValidationRequestDto
+    {
+        /// <summary>
+        /// Dragon being validated for combat
+        /// </summary>
+        [Required]
+        public Dictionary<string, object> DragonData { get; set; } = new();
+
+        /// <summary>
+        /// Combat context for validation
+        /// </summary>
+        [Required]
+        [StringLength(50)]
+        public string CombatContext { get; set; } = string.Empty;
+
+        /// <summary>
+        /// Troop composition the dragon will accompany
+        /// </summary>
+        public Dictionary<string, int>? TroopComposition { get; set; }
+
+        /// <summary>
+        /// Target information for validation
+        /// </summary>
+        public Dictionary<string, object>? TargetInfo { get; set; }
+    }
+}

ShadowedRealmsMobile/src/server/ShadowedRealms.Shared/DTOs/Combat/FieldInterceptionRequestDto.cs

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+/*
+ * File: D:\shadowed-realms-mobile\ShadowedRealmsMobile\src\server\ShadowedRealms.Shared\DTOs\Combat\FieldInterceptionRequestDto.cs
+ * Created: 2025-10-19
+ * Last Modified: 2025-10-19
+ * Description: Request DTO for field interception execution
+ * Last Edit Notes: Individual file implementation for field interception execution input validation
+ */
+
+using System.ComponentModel.DataAnnotations;
+
+namespace ShadowedRealms.Shared.DTOs.Combat
+{
+    /// <summary>
+    /// Request DTO for field interception execution
+    /// </summary>
+    public class FieldInterceptionRequestDto
+    {
+        /// <summary>
+        /// Player being intercepted
+        /// </summary>
+        [Required]
+        [Range(1, int.MaxValue)]
+        public int AttackingPlayerId { get; set; }
+
+        /// <summary>
+        /// Interception point coordinates
+        /// </summary>
+        [Required]
+        public (int X, int Y) InterceptionPoint { get; set; }
+
+        /// <summary>
+        /// Troops being deployed for interception
+        /// </summary>
+        [Required]
+        public Dictionary<string, int> DefenderTroops { get; set; } = new();
+
+        /// <summary>
+        /// Dragon deployment for interception
+        /// </summary>
+        public Dictionary<string, object>? DragonDeployment { get; set; }
+
+        /// <summary>
+        /// Tactical preferences for the interception
+        /// </summary>
+        public Dictionary<string, string>? TacticalPreferences { get; set; }
+    }
+}

ShadowedRealmsMobile/src/server/ShadowedRealms.Shared/DTOs/Combat/InterceptionCalculationRequestDto.cs

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+/*
+ * File: D:\shadowed-realms-mobile\ShadowedRealmsMobile\src\server\ShadowedRealms.Shared\DTOs\Combat\InterceptionCalculationRequestDto.cs
+ * Created: 2025-10-19
+ * Last Modified: 2025-10-19
+ * Description: Request DTO for interception opportunities calculation
+ * Last Edit Notes: Individual file implementation for interception calculation input validation
+ */
+
+using System.ComponentModel.DataAnnotations;
+
+namespace ShadowedRealms.Shared.DTOs.Combat
+{
+    /// <summary>
+    /// Request DTO for interception opportunities calculation
+    /// </summary>
+    public class InterceptionCalculationRequestDto
+    {
+        /// <summary>
+        /// ID of the attacking player to intercept
+        /// </summary>
+        [Required]
+        [Range(1, int.MaxValue)]
+        public int AttackingPlayerId { get; set; }
+
+        /// <summary>
+        /// Attack route information
+        /// </summary>
+        [Required]
+        public List<(int X, int Y)> AttackRoute { get; set; } = new();
+
+        /// <summary>
+        /// Expected arrival time of attacking forces
+        /// </summary>
+        public DateTime? EstimatedArrivalTime { get; set; }
+
+        /// <summary>
+        /// Additional calculation parameters
+        /// </summary>
+        public Dictionary<string, object>? CalculationParameters { get; set; }
+    }
+}

ShadowedRealmsMobile/src/server/ShadowedRealms.Shared/DTOs/Combat/InterceptionOpportunitiesResponseDto.cs

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+/*
+ * File: D:\shadowed-realms-mobile\ShadowedRealmsMobile\src\server\ShadowedRealms.Shared\DTOs\Combat\InterceptionOpportunitiesResponseDto.cs
+ * Created: 2025-10-19
+ * Last Modified: 2025-10-19
+ * Description: Response DTO for field interception opportunities - core innovation feature
+ * Last Edit Notes: Individual file implementation for defender interception calculation system
+ */
+
+namespace ShadowedRealms.Shared.DTOs.Combat
+{
+    /// <summary>
+    /// Response DTO for field interception opportunities calculation
+    /// </summary>
+    public class InterceptionOpportunitiesResponseDto
+    {
+        /// <summary>
+        /// Defending player calculating interceptions
+        /// </summary>
+        public int DefendingPlayerId { get; set; }
+
+        /// <summary>
+        /// Attacking player being intercepted
+        /// </summary>
+        public int AttackingPlayerId { get; set; }
+
+        /// <summary>
+        /// All available interception opportunities with timing and positioning
+        /// </summary>
+        public Dictionary<string, object> InterceptionOpportunities { get; set; } = new();
+
+        /// <summary>
+        /// When the calculation was performed
+        /// </summary>
+        public DateTime CalculationTime { get; set; }
+    }
+}

ShadowedRealmsMobile/src/server/ShadowedRealms.Shared/DTOs/Combat/MarchCancellationRequestDto.cs

@@ -0,0 +1,36 @@
+/*
+ * File: D:\shadowed-realms-mobile\ShadowedRealmsMobile\src\server\ShadowedRealms.Shared\DTOs\Combat\MarchCancellationRequestDto.cs
+ * Created: 2025-10-19
+ * Last Modified: 2025-10-19
+ * Description: Request DTO for march cancellation
+ * Last Edit Notes: Individual file implementation for march cancellation input validation
+ */
+
+using System.ComponentModel.DataAnnotations;
+
+namespace ShadowedRealms.Shared.DTOs.Combat
+{
+    /// <summary>
+    /// Request DTO for march cancellation
+    /// </summary>
+    public class MarchCancellationRequestDto
+    {
+        /// <summary>
+        /// ID of the march to cancel
+        /// </summary>
+        [Required]
+        [Range(1, int.MaxValue)]
+        public int MarchId { get; set; }
+
+        /// <summary>
+        /// Reason for cancellation
+        /// </summary>
+        [StringLength(200)]
+        public string? CancellationReason { get; set; }
+
+        /// <summary>
+        /// Whether to apply early return penalties
+        /// </summary>
+        public bool AcceptPenalties { get; set; } = true;
+    }
+}

ShadowedRealmsMobile/src/server/ShadowedRealms.Shared/DTOs/Combat/MarchInitiationRequestDto.cs

@@ -0,0 +1,52 @@
+/*
+ * File: D:\shadowed-realms-mobile\ShadowedRealmsMobile\src\server\ShadowedRealms.Shared\DTOs\Combat\MarchInitiationRequestDto.cs
+ * Created: 2025-10-19
+ * Last Modified: 2025-10-19
+ * Description: Request DTO for march initiation
+ * Last Edit Notes: Individual file implementation for march initiation input validation
+ */
+
+using System.ComponentModel.DataAnnotations;
+
+namespace ShadowedRealms.Shared.DTOs.Combat
+{
+    /// <summary>
+    /// Request DTO for march initiation
+    /// </summary>
+    public class MarchInitiationRequestDto
+    {
+        /// <summary>
+        /// Target destination coordinates
+        /// </summary>
+        [Required]
+        public (int X, int Y) Destination { get; set; }
+
+        /// <summary>
+        /// Troops being marched
+        /// </summary>
+        [Required]
+        public Dictionary<string, int> Troops { get; set; } = new();
+
+        /// <summary>
+        /// March type (Attack, Rally, Reinforce, etc.)
+        /// </summary>
+        [Required]
+        [StringLength(50)]
+        public string MarchType { get; set; } = string.Empty;
+
+        /// <summary>
+        /// Dragon accompanying the march
+        /// </summary>
+        public Dictionary<string, object>? DragonDetails { get; set; }
+
+        /// <summary>
+        /// March priority and speed preferences
+        /// </summary>
+        public Dictionary<string, object>? MarchPreferences { get; set; }
+
+        /// <summary>
+        /// Target player ID (for attacks)
+        /// </summary>
+        public int? TargetPlayerId { get; set; }
+    }
+}

ShadowedRealmsMobile/src/server/ShadowedRealms.Shared/DTOs/Combat/MarchSpeedResponseDto.cs

@@ -0,0 +1,46 @@
+/*
+ * File: D:\shadowed-realms-mobile\ShadowedRealmsMobile\src\server\ShadowedRealms.Shared\DTOs\Combat\MarchSpeedResponseDto.cs
+ * Created: 2025-10-19
+ * Last Modified: 2025-10-19
+ * Description: Response DTO for march speed calculations
+ * Last Edit Notes: Individual file implementation for march speed calculation results
+ */
+
+namespace ShadowedRealms.Shared.DTOs.Combat
+{
+    /// <summary>
+    /// Response DTO for march speed calculations
+    /// </summary>
+    public class MarchSpeedResponseDto
+    {
+        /// <summary>
+        /// Base march speed
+        /// </summary>
+        public decimal BaseSpeed { get; set; }
+
+        /// <summary>
+        /// Final calculated speed after all modifiers
+        /// </summary>
+        public decimal FinalSpeed { get; set; }
+
+        /// <summary>
+        /// Speed modifiers applied
+        /// </summary>
+        public Dictionary<string, decimal> SpeedModifiers { get; set; } = new();
+
+        /// <summary>
+        /// Estimated travel time to destination
+        /// </summary>
+        public TimeSpan EstimatedTravelTime { get; set; }
+
+        /// <summary>
+        /// Any limitations or restrictions on movement
+        /// </summary>
+        public List<string> MovementRestrictions { get; set; } = new();
+
+        /// <summary>
+        /// When the calculation was performed
+        /// </summary>
+        public DateTime CalculatedAt { get; set; }
+    }
+}

ShadowedRealmsMobile/src/server/ShadowedRealms.Shared/DTOs/Common/ErrorResponseDto.cs

@@ -0,0 +1,45 @@
+/*
+ * File: D:\shadowed-realms-mobile\ShadowedRealmsMobile\src\server\ShadowedRealms.Shared\DTOs\Common\ErrorResponseDto.cs
+ * Created: 2025-10-19
+ * Last Modified: 2025-10-19
+ * Description: Standard error response DTO for consistent API error handling across all controllers
+ * Last Edit Notes: Individual file implementation with validation error support and contextual error information
+ */
+
+using System.ComponentModel.DataAnnotations;
+
+namespace ShadowedRealms.Shared.DTOs.Common
+{
+    /// <summary>
+    /// Standard error response for all API endpoints
+    /// </summary>
+    public class ErrorResponseDto
+    {
+        /// <summary>
+        /// Human-readable error message
+        /// </summary>
+        [Required]
+        public string Message { get; set; } = string.Empty;
+
+        /// <summary>
+        /// Error code for client handling
+        /// </summary>
+        [Required]
+        public string Code { get; set; } = string.Empty;
+
+        /// <summary>
+        /// Additional error details
+        /// </summary>
+        public Dictionary<string, object>? Details { get; set; }
+
+        /// <summary>
+        /// Validation errors from model binding
+        /// </summary>
+        public Dictionary<string, string[]>? ValidationErrors { get; set; }
+
+        /// <summary>
+        /// Timestamp when error occurred
+        /// </summary>
+        public DateTime Timestamp { get; set; } = DateTime.UtcNow;
+    }
+}

ShadowedRealmsMobile/src/server/ShadowedRealms.Shared/DTOs/Common/SuccessResponseDto.cs

@@ -0,0 +1,36 @@
+/*
+ * File: D:\shadowed-realms-mobile\ShadowedRealmsMobile\src\server\ShadowedRealms.Shared\DTOs\Common\SuccessResponseDto.cs
+ * Created: 2025-10-19
+ * Last Modified: 2025-10-19
+ * Description: Standard success response DTO for API operations that don't return specific data
+ * Last Edit Notes: Individual file implementation for consistent success messaging across controllers
+ */
+
+namespace ShadowedRealms.Shared.DTOs.Common
+{
+    /// <summary>
+    /// Standard success response for operations that don't return specific data
+    /// </summary>
+    public class SuccessResponseDto
+    {
+        /// <summary>
+        /// Success message
+        /// </summary>
+        public string Message { get; set; } = "Operation completed successfully";
+
+        /// <summary>
+        /// Success indicator
+        /// </summary>
+        public bool Success { get; set; } = true;
+
+        /// <summary>
+        /// Operation timestamp
+        /// </summary>
+        public DateTime Timestamp { get; set; } = DateTime.UtcNow;
+
+        /// <summary>
+        /// Additional success details
+        /// </summary>
+        public Dictionary<string, object>? Details { get; set; }
+    }
+}

ShadowedRealmsMobile/src/server/ShadowedRealms.Shared/DTOs/Kingdom/KingdomStatusResponseDto.cs

@@ -0,0 +1,51 @@
+/*
+ * File: D:\shadowed-realms-mobile\ShadowedRealmsMobile\src\server\ShadowedRealms.Shared\DTOs\Kingdom\KingdomStatusResponseDto.cs
+ * Created: 2025-10-19
+ * Last Modified: 2025-10-19
+ * Description: Response DTO for kingdom status information
+ * Last Edit Notes: Individual file implementation for kingdom status and leadership data
+ */
+
+namespace ShadowedRealms.Shared.DTOs.Kingdom
+{
+    /// <summary>
+    /// Response DTO for kingdom status information
+    /// </summary>
+    public class KingdomStatusResponseDto
+    {
+        /// <summary>
+        /// Kingdom identifier
+        /// </summary>
+        public int KingdomId { get; set; }
+
+        /// <summary>
+        /// Kingdom name
+        /// </summary>
+        public string KingdomName { get; set; } = string.Empty;
+
+        /// <summary>
+        /// Current population count
+        /// </summary>
+        public int Population { get; set; }
+
+        /// <summary>
+        /// Kingdom leadership information
+        /// </summary>
+        public Dictionary<string, object> Leadership { get; set; } = new();
+
+        /// <summary>
+        /// Current KvK event status
+        /// </summary>
+        public Dictionary<string, object>? KvKStatus { get; set; }
+
+        /// <summary>
+        /// Kingdom statistics and metrics
+        /// </summary>
+        public Dictionary<string, object> Statistics { get; set; } = new();
+
+        /// <summary>
+        /// When the status was last updated
+        /// </summary>
+        public DateTime LastUpdated { get; set; }
+    }
+}

ShadowedRealmsMobile/src/server/ShadowedRealms.Shared/DTOs/Kingdom/KvKEventRequestDto.cs

@@ -0,0 +1,47 @@
+/*
+ * File: D:\shadowed-realms-mobile\ShadowedRealmsMobile\src\server\ShadowedRealms.Shared\DTOs\Kingdom\KvKEventRequestDto.cs
+ * Created: 2025-10-19
+ * Last Modified: 2025-10-19
+ * Description: Request DTO for KvK event creation
+ * Last Edit Notes: Individual file implementation for KvK event creation input validation
+ */
+
+using System.ComponentModel.DataAnnotations;
+
+namespace ShadowedRealms.Shared.DTOs.Kingdom
+{
+    /// <summary>
+    /// Request DTO for KvK event creation
+    /// </summary>
+    public class KvKEventRequestDto
+    {
+        /// <summary>
+        /// Type of KvK event to create
+        /// </summary>
+        [Required]
+        [StringLength(50)]
+        public string EventType { get; set; } = string.Empty;
+
+        /// <summary>
+        /// Opposing kingdoms for the event
+        /// </summary>
+        [Required]
+        public List<int> OpposingKingdoms { get; set; } = new();
+
+        /// <summary>
+        /// Event scheduling preferences
+        /// </summary>
+        public DateTime? PreferredStartTime { get; set; }
+
+        /// <summary>
+        /// Event duration in hours
+        /// </summary>
+        [Range(1, 168)] // 1 hour to 1 week
+        public int DurationHours { get; set; } = 72;
+
+        /// <summary>
+        /// Event-specific parameters
+        /// </summary>
+        public Dictionary<string, object>? EventParameters { get; set; }
+    }
+}

ShadowedRealmsMobile/src/server/ShadowedRealms.Shared/DTOs/Kingdom/TaxDistributionResponseDto.cs

@@ -0,0 +1,41 @@
+/*
+ * File: D:\shadowed-realms-mobile\ShadowedRealmsMobile\src\server\ShadowedRealms.Shared\DTOs\Kingdom\TaxDistributionResponseDto.cs
+ * Created: 2025-10-19
+ * Last Modified: 2025-10-19
+ * Description: Response DTO for tax distribution operations
+ * Last Edit Notes: Individual file implementation for tax distribution results
+ */
+
+namespace ShadowedRealms.Shared.DTOs.Kingdom
+{
+    /// <summary>
+    /// Response DTO for tax distribution operations
+    /// </summary>
+    public class TaxDistributionResponseDto
+    {
+        /// <summary>
+        /// Kingdom performing the distribution
+        /// </summary>
+        public int KingdomId { get; set; }
+
+        /// <summary>
+        /// Total tax amount distributed
+        /// </summary>
+        public decimal TotalDistributed { get; set; }
+
+        /// <summary>
+        /// Distribution breakdown by recipient
+        /// </summary>
+        public Dictionary<string, decimal> DistributionBreakdown { get; set; } = new();
+
+        /// <summary>
+        /// Distribution method used
+        /// </summary>
+        public string DistributionMethod { get; set; } = string.Empty;
+
+        /// <summary>
+        /// When the distribution was completed
+        /// </summary>
+        public DateTime DistributionTime { get; set; }
+    }
+}

ShadowedRealmsMobile/src/server/ShadowedRealms.Shared/DTOs/Kingdom/VotingRequestDto.cs

@@ -0,0 +1,45 @@
+/*
+ * File: D:\shadowed-realms-mobile\ShadowedRealmsMobile\src\server\ShadowedRealms.Shared\DTOs\Kingdom\VotingRequestDto.cs
+ * Created: 2025-10-19
+ * Last Modified: 2025-10-19
+ * Description: Request DTO for democratic voting operations
+ * Last Edit Notes: Individual file implementation for democratic voting input validation
+ */
+
+using System.ComponentModel.DataAnnotations;
+
+namespace ShadowedRealms.Shared.DTOs.Kingdom
+{
+    /// <summary>
+    /// Request DTO for democratic voting operations
+    /// </summary>
+    public class VotingRequestDto
+    {
+        /// <summary>
+        /// Type of vote being cast
+        /// </summary>
+        [Required]
+        [StringLength(50)]
+        public string VoteType { get; set; } = string.Empty;
+
+        /// <summary>
+        /// ID of the item being voted on
+        /// </summary>
+        [Required]
+        [Range(1, int.MaxValue)]
+        public int VoteItemId { get; set; }
+
+        /// <summary>
+        /// Vote choice (Yes/No, candidate ID, etc.)
+        /// </summary>
+        [Required]
+        [StringLength(100)]
+        public string VoteChoice { get; set; } = string.Empty;
+
+        /// <summary>
+        /// Optional reasoning for the vote
+        /// </summary>
+        [StringLength(500)]
+        public string? VoteReasoning { get; set; }
+    }
+}

ShadowedRealmsMobile/src/server/ShadowedRealms.Shared/DTOs/Player/AllianceJoinRequestDto.cs

@@ -0,0 +1,37 @@
+/*
+ * File: D:\shadowed-realms-mobile\ShadowedRealmsMobile\src\server\ShadowedRealms.Shared\DTOs\Player\AllianceJoinRequestDto.cs
+ * Created: 2025-10-19
+ * Last Modified: 2025-10-19
+ * Description: Request DTO for alliance join operations
+ * Last Edit Notes: Individual file implementation for alliance join input validation
+ */
+
+using System.ComponentModel.DataAnnotations;
+
+namespace ShadowedRealms.Shared.DTOs.Player
+{
+    /// <summary>
+    /// Request DTO for alliance join operations
+    /// </summary>
+    public class AllianceJoinRequestDto
+    {
+        /// <summary>
+        /// Alliance to join
+        /// </summary>
+        [Required]
+        [Range(1, int.MaxValue)]
+        public int AllianceId { get; set; }
+
+        /// <summary>
+        /// Optional message to alliance leadership
+        /// </summary>
+        [StringLength(500)]
+        public string? Message { get; set; }
+
+        /// <summary>
+        /// Player's preferred role if accepted
+        /// </summary>
+        [StringLength(50)]
+        public string? PreferredRole { get; set; }
+    }
+}

ShadowedRealmsMobile/src/server/ShadowedRealms.Shared/DTOs/Player/CastleUpgradeRequestDto.cs

@@ -0,0 +1,34 @@
+/*
+ * File: D:\shadowed-realms-mobile\ShadowedRealmsMobile\src\server\ShadowedRealms.Shared\DTOs\Player\CastleUpgradeRequestDto.cs
+ * Created: 2025-10-19
+ * Last Modified: 2025-10-19
+ * Description: Request DTO for castle upgrade operations
+ * Last Edit Notes: Individual file implementation for castle upgrade input validation
+ */
+
+using System.ComponentModel.DataAnnotations;
+
+namespace ShadowedRealms.Shared.DTOs.Player
+{
+    /// <summary>
+    /// Request DTO for castle upgrade operations
+    /// </summary>
+    public class CastleUpgradeRequestDto
+    {
+        /// <summary>
+        /// Whether to use VIP bonuses if available
+        /// </summary>
+        public bool UseVipBonuses { get; set; } = true;
+
+        /// <summary>
+        /// Resource allocation for upgrade
+        /// </summary>
+        public Dictionary<string, decimal> ResourceAllocation { get; set; } = new();
+
+        /// <summary>
+        /// Priority level for upgrade processing
+        /// </summary>
+        [Range(1, 5)]
+        public int Priority { get; set; } = 3;
+    }
+}

ShadowedRealmsMobile/src/server/ShadowedRealms.Shared/DTOs/Player/CastleUpgradeResponseDto.cs

@@ -0,0 +1,46 @@
+/*
+ * File: D:\shadowed-realms-mobile\ShadowedRealmsMobile\src\server\ShadowedRealms.Shared\DTOs\Player\CastleUpgradeResponseDto.cs
+ * Created: 2025-10-19
+ * Last Modified: 2025-10-19
+ * Description: Response DTO for castle upgrade operations
+ * Last Edit Notes: Individual file implementation for castle upgrade results
+ */
+
+namespace ShadowedRealms.Shared.DTOs.Player
+{
+    /// <summary>
+    /// Response DTO for castle upgrade operations
+    /// </summary>
+    public class CastleUpgradeResponseDto
+    {
+        /// <summary>
+        /// Player ID who performed the upgrade
+        /// </summary>
+        public int PlayerId { get; set; }
+
+        /// <summary>
+        /// Whether the upgrade was successful
+        /// </summary>
+        public bool Success { get; set; }
+
+        /// <summary>
+        /// New castle level after upgrade
+        /// </summary>
+        public int NewCastleLevel { get; set; }
+
+        /// <summary>
+        /// Benefits granted from the upgrade
+        /// </summary>
+        public Dictionary<string, object> BenefitsGranted { get; set; } = new();
+
+        /// <summary>
+        /// When the upgrade was completed
+        /// </summary>
+        public DateTime UpgradeTime { get; set; }
+
+        /// <summary>
+        /// Resources consumed in the upgrade
+        /// </summary>
+        public Dictionary<string, decimal> ResourcesConsumed { get; set; } = new();
+    }
+}

ShadowedRealmsMobile/src/server/ShadowedRealms.Shared/DTOs/Player/CombatPreparationResponseDto.cs

@@ -0,0 +1,36 @@
+/*
+ * File: D:\shadowed-realms-mobile\ShadowedRealmsMobile\src\server\ShadowedRealms.Shared\DTOs\Player\CombatPreparationResponseDto.cs
+ * Created: 2025-10-19
+ * Last Modified: 2025-10-19
+ * Description: Response DTO for combat preparation status
+ * Last Edit Notes: Individual file implementation for combat preparation data
+ */
+
+namespace ShadowedRealms.Shared.DTOs.Player
+{
+    /// <summary>
+    /// Response DTO for combat preparation status
+    /// </summary>
+    public class CombatPreparationResponseDto
+    {
+        /// <summary>
+        /// Player ID preparing for combat
+        /// </summary>
+        public int PlayerId { get; set; }
+
+        /// <summary>
+        /// Preparation status details
+        /// </summary>
+        public Dictionary<string, object> PreparationStatus { get; set; } = new();
+
+        /// <summary>
+        /// Available march options
+        /// </summary>
+        public List<Dictionary<string, object>> MarchOptions { get; set; } = new();
+
+        /// <summary>
+        /// When preparation was calculated
+        /// </summary>
+        public DateTime PreparationTime { get; set; }
+    }
+}

ShadowedRealmsMobile/src/server/ShadowedRealms.Shared/DTOs/Player/ExperienceProcessingRequestDto.cs

@@ -0,0 +1,42 @@
+/*
+ * File: D:\shadowed-realms-mobile\ShadowedRealmsMobile\src\server\ShadowedRealms.Shared\DTOs\Player\ExperienceProcessingRequestDto.cs
+ * Created: 2025-10-19
+ * Last Modified: 2025-10-19
+ * Description: Request DTO for experience processing operations
+ * Last Edit Notes: Individual file implementation for experience processing input validation
+ */
+
+using System.ComponentModel.DataAnnotations;
+
+namespace ShadowedRealms.Shared.DTOs.Player
+{
+    /// <summary>
+    /// Request DTO for experience processing operations
+    /// </summary>
+    public class ExperienceProcessingRequestDto
+    {
+        /// <summary>
+        /// Type of experience gain
+        /// </summary>
+        [Required]
+        [StringLength(50)]
+        public string ExperienceType { get; set; } = string.Empty;
+
+        /// <summary>
+        /// Amount of experience to process
+        /// </summary>
+        [Range(0, decimal.MaxValue)]
+        public decimal ExperienceAmount { get; set; }
+
+        /// <summary>
+        /// Source of the experience
+        /// </summary>
+        [StringLength(100)]
+        public string? Source { get; set; }
+
+        /// <summary>
+        /// Additional context for experience processing
+        /// </summary>
+        public Dictionary<string, object>? Context { get; set; }
+    }
+}

ShadowedRealmsMobile/src/server/ShadowedRealms.Shared/DTOs/Player/PlayerProfileResponseDto.cs

@@ -0,0 +1,89 @@
+/*
+ * File: D:\shadowed-realms-mobile\ShadowedRealmsMobile\src\server\ShadowedRealms.Shared\DTOs\Player\PlayerProfileResponseDto.cs
+ * Created: 2025-10-19
+ * Last Modified: 2025-10-19
+ * Description: Response DTO for player profile information including core stats and progression
+ * Last Edit Notes: Individual file implementation with complete player profile data structure
+ */
+
+using System.ComponentModel.DataAnnotations;
+
+namespace ShadowedRealms.Shared.DTOs.Player
+{
+    /// <summary>
+    /// Response DTO for comprehensive player profile information
+    /// </summary>
+    public class PlayerProfileResponseDto
+    {
+        /// <summary>
+        /// Player's unique identifier
+        /// </summary>
+        public int PlayerId { get; set; }
+
+        /// <summary>
+        /// Player's username
+        /// </summary>
+        [Required]
+        public string PlayerName { get; set; } = string.Empty;
+
+        /// <summary>
+        /// Current castle level (capped at 30)
+        /// </summary>
+        public int CastleLevel { get; set; }
+
+        /// <summary>
+        /// Overall player power rating
+        /// </summary>
+        public decimal Power { get; set; }
+
+        /// <summary>
+        /// Current VIP tier
+        /// </summary>
+        public int VipTier { get; set; }
+
+        /// <summary>
+        /// Kingdom the player belongs to
+        /// </summary>
+        public int KingdomId { get; set; }
+
+        /// <summary>
+        /// Alliance ID if player is in an alliance
+        /// </summary>
+        public int? AllianceId { get; set; }
+
+        /// <summary>
+        /// Alliance name if applicable
+        /// </summary>
+        public string? AllianceName { get; set; }
+
+        /// <summary>
+        /// Player's position on the map
+        /// </summary>
+        public (int X, int Y) Position { get; set; }
+
+        /// <summary>
+        /// Player's current resource counts
+        /// </summary>
+        public Dictionary<string, decimal> Resources { get; set; } = new();
+
+        /// <summary>
+        /// Combat statistics
+        /// </summary>
+        public Dictionary<string, object> CombatStats { get; set; } = new();
+
+        /// <summary>
+        /// Account creation date
+        /// </summary>
+        public DateTime CreatedAt { get; set; }
+
+        /// <summary>
+        /// Last active timestamp
+        /// </summary>
+        public DateTime LastActiveAt { get; set; }
+
+        /// <summary>
+        /// Whether player is active
+        /// </summary>
+        public bool IsActive { get; set; }
+    }
+}

ShadowedRealmsMobile/src/server/ShadowedRealms.Shared/DTOs/Player/ResourceStatusResponseDto.cs

@@ -0,0 +1,46 @@
+/*
+ * File: D:\shadowed-realms-mobile\ShadowedRealmsMobile\src\server\ShadowedRealms.Shared\DTOs\Player\ResourceStatusResponseDto.cs
+ * Created: 2025-10-19
+ * Last Modified: 2025-10-19
+ * Description: Response DTO for resource status information
+ * Last Edit Notes: Individual file implementation for resource status data
+ */
+
+namespace ShadowedRealms.Shared.DTOs.Player
+{
+    /// <summary>
+    /// Response DTO for resource status information
+    /// </summary>
+    public class ResourceStatusResponseDto
+    {
+        /// <summary>
+        /// Player ID for resource status
+        /// </summary>
+        public int PlayerId { get; set; }
+
+        /// <summary>
+        /// Current resource amounts
+        /// </summary>
+        public Dictionary<string, decimal> CurrentResources { get; set; } = new();
+
+        /// <summary>
+        /// Resource production rates
+        /// </summary>
+        public Dictionary<string, decimal> ProductionRates { get; set; } = new();
+
+        /// <summary>
+        /// Storage capacity limits
+        /// </summary>
+        public Dictionary<string, decimal> StorageCapacity { get; set; } = new();
+
+        /// <summary>
+        /// Protected resource amounts
+        /// </summary>
+        public Dictionary<string, decimal> ProtectedAmounts { get; set; } = new();
+
+        /// <summary>
+        /// When resources were last calculated
+        /// </summary>
+        public DateTime LastCalculated { get; set; }
+    }
+}

ShadowedRealmsMobile/src/server/ShadowedRealms.Shared/DTOs/Player/TeleportationRequestDto.cs

@@ -0,0 +1,40 @@
+/*
+ * File: D:\shadowed-realms-mobile\ShadowedRealmsMobile\src\server\ShadowedRealms.Shared\DTOs\Player\TeleportationRequestDto.cs
+ * Created: 2025-10-19
+ * Last Modified: 2025-10-19
+ * Description: Request DTO for teleportation operations
+ * Last Edit Notes: Individual file implementation for teleportation input validation
+ */
+
+using System.ComponentModel.DataAnnotations;
+
+namespace ShadowedRealms.Shared.DTOs.Player
+{
+    /// <summary>
+    /// Request DTO for teleportation operations
+    /// </summary>
+    public class TeleportationRequestDto
+    {
+        /// <summary>
+        /// Target destination coordinates
+        /// </summary>
+        [Required]
+        public (int X, int Y) Destination { get; set; }
+
+        /// <summary>
+        /// Whether to use VIP teleportation benefits
+        /// </summary>
+        public bool UseVipBenefits { get; set; } = true;
+
+        /// <summary>
+        /// Teleportation priority level
+        /// </summary>
+        [Range(1, 5)]
+        public int Priority { get; set; } = 3;
+
+        /// <summary>
+        /// Override safety restrictions (requires special permissions)
+        /// </summary>
+        public bool OverrideSafetyRestrictions { get; set; } = false;
+    }
+}

ShadowedRealmsMobile/src/server/ShadowedRealms.Shared/DTOs/Player/TeleportationResponseDto.cs

@@ -0,0 +1,41 @@
+/*
+ * File: D:\shadowed-realms-mobile\ShadowedRealmsMobile\src\server\ShadowedRealms.Shared\DTOs\Player\TeleportationResponseDto.cs
+ * Created: 2025-10-19
+ * Last Modified: 2025-10-19
+ * Description: Response DTO for teleportation operations
+ * Last Edit Notes: Individual file implementation for teleportation results
+ */
+
+namespace ShadowedRealms.Shared.DTOs.Player
+{
+    /// <summary>
+    /// Response DTO for teleportation operations
+    /// </summary>
+    public class TeleportationResponseDto
+    {
+        /// <summary>
+        /// Whether teleportation was successful
+        /// </summary>
+        public bool Success { get; set; }
+
+        /// <summary>
+        /// New player position after teleportation
+        /// </summary>
+        public (int X, int Y) NewPosition { get; set; }
+
+        /// <summary>
+        /// Cost breakdown for the teleportation
+        /// </summary>
+        public Dictionary<string, decimal> CostBreakdown { get; set; } = new();
+
+        /// <summary>
+        /// Any restrictions that were applied
+        /// </summary>
+        public List<string> RestrictionsApplied { get; set; } = new();
+
+        /// <summary>
+        /// When the teleportation occurred
+        /// </summary>
+        public DateTime TeleportationTime { get; set; }
+    }
+}

ShadowedRealmsMobile/src/server/ShadowedRealms.Shared/DTOs/Player/VipStatusResponseDto.cs

@@ -0,0 +1,31 @@
+/*
+ * File: D:\shadowed-realms-mobile\ShadowedRealmsMobile\src\server\ShadowedRealms.Shared\DTOs\Player\VipStatusResponseDto.cs
+ * Created: 2025-10-19
+ * Last Modified: 2025-10-19
+ * Description: Response DTO for VIP status information
+ * Last Edit Notes: Individual file implementation for VIP status data
+ */
+
+namespace ShadowedRealms.Shared.DTOs.Player
+{
+    /// <summary>
+    /// Response DTO for VIP status information
+    /// </summary>
+    public class VipStatusResponseDto
+    {
+        /// <summary>
+        /// Player ID for VIP status
+        /// </summary>
+        public int PlayerId { get; set; }
+
+        /// <summary>
+        /// Complete VIP status information
+        /// </summary>
+        public Dictionary<string, object> VipStatus { get; set; } = new();
+
+        /// <summary>
+        /// When the status was last updated
+        /// </summary>
+        public DateTime LastUpdated { get; set; }
+    }
+}

ShadowedRealmsMobile/src/server/ShadowedRealms.Shared/DTOs/Purchase/BalanceMonitoringResponseDto.cs

@@ -0,0 +1,46 @@
+/*
+ * File: D:\shadowed-realms-mobile\ShadowedRealmsMobile\src\server\ShadowedRealms.Shared\DTOs\Purchase\BalanceMonitoringResponseDto.cs
+ * Created: 2025-10-19
+ * Last Modified: 2025-10-19
+ * Description: Response DTO for balance monitoring results
+ * Last Edit Notes: Individual file implementation for anti-pay-to-win balance monitoring results
+ */
+
+namespace ShadowedRealms.Shared.DTOs.Purchase
+{
+    /// <summary>
+    /// Response DTO for balance monitoring results
+    /// </summary>
+    public class BalanceMonitoringResponseDto
+    {
+        /// <summary>
+        /// Player being monitored
+        /// </summary>
+        public int PlayerId { get; set; }
+
+        /// <summary>
+        /// Overall balance assessment
+        /// </summary>
+        public string BalanceStatus { get; set; } = string.Empty;
+
+        /// <summary>
+        /// Detailed balance metrics
+        /// </summary>
+        public Dictionary<string, object> BalanceMetrics { get; set; } = new();
+
+        /// <summary>
+        /// Spending vs performance analysis
+        /// </summary>
+        public Dictionary<string, object> SpendingAnalysis { get; set; } = new();
+
+        /// <summary>
+        /// Recommended adjustments for balance
+        /// </summary>
+        public List<string> BalanceRecommendations { get; set; } = new();
+
+        /// <summary>
+        /// When monitoring was performed
+        /// </summary>
+        public DateTime MonitoringTime { get; set; }
+    }
+}

ShadowedRealmsMobile/src/server/ShadowedRealms.Shared/DTOs/Purchase/FraudDetectionRequestDto.cs

@@ -0,0 +1,40 @@
+/*
+ * File: D:\shadowed-realms-mobile\ShadowedRealmsMobile\src\server\ShadowedRealms.Shared\DTOs\Purchase\FraudDetectionRequestDto.cs
+ * Created: 2025-10-19
+ * Last Modified: 2025-10-19
+ * Description: Request DTO for fraud detection analysis
+ * Last Edit Notes: Individual file implementation for fraud detection input validation
+ */
+
+using System.ComponentModel.DataAnnotations;
+
+namespace ShadowedRealms.Shared.DTOs.Purchase
+{
+    /// <summary>
+    /// Request DTO for fraud detection analysis
+    /// </summary>
+    public class FraudDetectionRequestDto
+    {
+        /// <summary>
+        /// Transaction details to analyze
+        /// </summary>
+        [Required]
+        public Dictionary<string, object> TransactionData { get; set; } = new();
+
+        /// <summary>
+        /// Analysis depth level
+        /// </summary>
+        [Range(1, 5)]
+        public int AnalysisDepth { get; set; } = 3;
+
+        /// <summary>
+        /// Include historical pattern analysis
+        /// </summary>
+        public bool IncludeHistoricalAnalysis { get; set; } = true;
+
+        /// <summary>
+        /// Additional fraud detection parameters
+        /// </summary>
+        public Dictionary<string, object>? DetectionParameters { get; set; }
+    }
+}

ShadowedRealmsMobile/src/server/ShadowedRealms.Shared/DTOs/Purchase/PurchaseProcessingRequestDto.cs

@@ -0,0 +1,62 @@
+/*
+ * File: D:\shadowed-realms-mobile\ShadowedRealmsMobile\src\server\ShadowedRealms.Shared\DTOs\Purchase\PurchaseProcessingRequestDto.cs
+ * Created: 2025-10-19
+ * Last Modified: 2025-10-19
+ * Description: Request DTO for purchase processing
+ * Last Edit Notes: Individual file implementation for purchase processing input validation
+ */
+
+using System.ComponentModel.DataAnnotations;
+
+namespace ShadowedRealms.Shared.DTOs.Purchase
+{
+    /// <summary>
+    /// Request DTO for purchase processing
+    /// </summary>
+    public class PurchaseProcessingRequestDto
+    {
+        /// <summary>
+        /// Item or package being purchased
+        /// </summary>
+        [Required]
+        [StringLength(100)]
+        public string ItemId { get; set; } = string.Empty;
+
+        /// <summary>
+        /// Quantity being purchased
+        /// </summary>
+        [Range(1, int.MaxValue)]
+        public int Quantity { get; set; } = 1;
+
+        /// <summary>
+        /// Purchase amount in local currency
+        /// </summary>
+        [Range(0.01, double.MaxValue)]
+        public decimal PurchaseAmount { get; set; }
+
+        /// <summary>
+        /// Currency code for the purchase
+        /// </summary>
+        [Required]
+        [StringLength(3)]
+        public string CurrencyCode { get; set; } = string.Empty;
+
+        /// <summary>
+        /// External transaction ID from payment processor
+        /// </summary>
+        [Required]
+        [StringLength(200)]
+        public string TransactionId { get; set; } = string.Empty;
+
+        /// <summary>
+        /// Payment method used
+        /// </summary>
+        [StringLength(50)]
+        public string? PaymentMethod { get; set; }
+
+        /// <summary>
+        /// Additional purchase metadata
+        /// </summary>
+        public Dictionary<string, object>? PurchaseMetadata { get; set; }
+    }
+}

ShadowedRealmsMobile/src/server/ShadowedRealms.Shared/DTOs/Purchase/PurchaseValidationResponseDto.cs

@@ -0,0 +1,46 @@
+/*
+ * File: D:\shadowed-realms-mobile\ShadowedRealmsMobile\src\server\ShadowedRealms.Shared\DTOs\Purchase\PurchaseValidationResponseDto.cs
+ * Created: 2025-10-19
+ * Last Modified: 2025-10-19
+ * Description: Response DTO for purchase validation results
+ * Last Edit Notes: Individual file implementation for purchase validation and fraud detection results
+ */
+
+namespace ShadowedRealms.Shared.DTOs.Purchase
+{
+    /// <summary>
+    /// Response DTO for purchase validation results
+    /// </summary>
+    public class PurchaseValidationResponseDto
+    {
+        /// <summary>
+        /// Whether the purchase is valid and approved
+        /// </summary>
+        public bool IsValid { get; set; }
+
+        /// <summary>
+        /// Player making the purchase
+        /// </summary>
+        public int PlayerId { get; set; }
+
+        /// <summary>
+        /// Detailed validation results
+        /// </summary>
+        public Dictionary<string, object> ValidationResults { get; set; } = new();
+
+        /// <summary>
+        /// Any warnings about the purchase
+        /// </summary>
+        public List<string> Warnings { get; set; } = new();
+
+        /// <summary>
+        /// Fraud risk assessment
+        /// </summary>
+        public Dictionary<string, object> FraudRisk { get; set; } = new();
+
+        /// <summary>
+        /// When validation was performed
+        /// </summary>
+        public DateTime ValidationTime { get; set; }
+    }
+}

ShadowedRealmsMobile/src/server/ShadowedRealms.Shared/DTOs/Purchase/SpendingAnalyticsResponseDto.cs

@@ -0,0 +1,46 @@
+/*
+ * File: D:\shadowed-realms-mobile\ShadowedRealmsMobile\src\server\ShadowedRealms.Shared\DTOs\Purchase\SpendingAnalyticsResponseDto.cs
+ * Created: 2025-10-19
+ * Last Modified: 2025-10-19
+ * Description: Response DTO for spending analytics
+ * Last Edit Notes: Individual file implementation for spending analytics data
+ */
+
+namespace ShadowedRealms.Shared.DTOs.Purchase
+{
+    /// <summary>
+    /// Response DTO for spending analytics
+    /// </summary>
+    public class SpendingAnalyticsResponseDto
+    {
+        /// <summary>
+        /// Player ID for spending analytics
+        /// </summary>
+        public int PlayerId { get; set; }
+
+        /// <summary>
+        /// Timeframe covered by analytics
+        /// </summary>
+        public int TimeframeDays { get; set; }
+
+        /// <summary>
+        /// Complete spending analytics
+        /// </summary>
+        public Dictionary<string, object> SpendingAnalytics { get; set; } = new();
+
+        /// <summary>
+        /// Comparative data against other players
+        /// </summary>
+        public Dictionary<string, object>? Comparisons { get; set; }
+
+        /// <summary>
+        /// Spending patterns and trends
+        /// </summary>
+        public Dictionary<string, object>? Trends { get; set; }
+
+        /// <summary>
+        /// When analytics were generated
+        /// </summary>
+        public DateTime GeneratedAt { get; set; }
+    }
+}

ShadowedRealmsMobile/src/server/ShadowedRealms.Shared/DTOs/Purchase/VipAdvancementRequestDto.cs

@@ -0,0 +1,40 @@
+/*
+ * File: D:\shadowed-realms-mobile\ShadowedRealmsMobile\src\server\ShadowedRealms.Shared\DTOs\Purchase\VipAdvancementRequestDto.cs
+ * Created: 2025-10-19
+ * Last Modified: 2025-10-19
+ * Description: Request DTO for VIP advancement operations
+ * Last Edit Notes: Individual file implementation for VIP advancement input validation
+ */
+
+using System.ComponentModel.DataAnnotations;
+
+namespace ShadowedRealms.Shared.DTOs.Purchase
+{
+    /// <summary>
+    /// Request DTO for VIP advancement operations
+    /// </summary>
+    public class VipAdvancementRequestDto
+    {
+        /// <summary>
+        /// Purchase amount contributing to VIP advancement
+        /// </summary>
+        [Range(0.01, double.MaxValue)]
+        public decimal PurchaseAmount { get; set; }
+
+        /// <summary>
+        /// Whether to apply secret tier progression
+        /// </summary>
+        public bool AllowSecretTiers { get; set; } = true;
+
+        /// <summary>
+        /// External transaction reference
+        /// </summary>
+        [StringLength(200)]
+        public string? TransactionReference { get; set; }
+
+        /// <summary>
+        /// Additional advancement parameters
+        /// </summary>
+        public Dictionary<string, object>? AdvancementParameters { get; set; }
+    }
+}

ShadowedRealmsMobile/src/server/ShadowedRealms.Shared/ShadowedRealms.Shared.csproj

@@ -7,7 +7,6 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <Folder Include="DTOs\" />
     <Folder Include="Constants\" />
     <Folder Include="Enums\" />
     <Folder Include="Extensions\" />