feat: add DEX job exception handling and configuration

Exceptions:
- DEXJobException: custom exception with formatted error messages
  * Includes query name, batch ID, SQL query, and detailed error info
  * Two constructors: with inner exception or reason message
  * Comprehensive XML documentation

Options:
- DexJobOptions: hierarchical configuration for DEX job execution
  * Error handling per stage (MainQuery, CheckQuery, ReCRequest)
  * Granular error actions (OnExecution, IfNullOrWhiteSpace, OnUnexpectedResult)
  * Placeholder configuration with regex pattern support
  * Default BatchId placeholder: #INT#BATCH_ID (case-insensitive)
  * Fully documented with XML comments

ECMJobRunner.Application/Common/Options/DexJobOptions.cs

@@ -0,0 +1,105 @@
+using ECMJobRunner.Application.Common.Constants;
+using System.Text.RegularExpressions;
+
+namespace ECMJobRunner.Application.Common.Options
+{
+    /// <summary>
+    /// Configuration options for DEX job execution
+    /// </summary>
+    public class DexJobOptions
+    {
+        /// <summary>
+        /// Error handling options for DEX job operations
+        /// </summary>
+        public record DexJobErrorHandlingOptions
+        {
+            /// <summary>
+            /// Error handling options for SQL query execution
+            /// </summary>
+            public record SqlQueryErrorHandlingOptions
+            {
+                /// <summary>
+                /// Action to take when query execution fails
+                /// </summary>
+                public ErrorAction OnExecution { get; set; } = ErrorAction.Stop;
+
+                /// <summary>
+                /// Action to take when query is null or whitespace
+                /// </summary>
+                public ErrorAction IfNullOrWhiteSpace { get; set; } = ErrorAction.Ignore;
+
+                /// <summary>
+                /// Action to take when query returns unexpected result
+                /// </summary>
+                public ErrorAction OnUnexpectedResult { get; set; } = ErrorAction.Stop;
+            }
+
+            /// <summary>
+            /// Error handling options for HTTP requests
+            /// </summary>
+            public record HttpRequestErrorHandlingOptions
+            {
+                /// <summary>
+                /// Action to take when HTTP request fails
+                /// </summary>
+                public ErrorAction OnSending { get; set; } = ErrorAction.Stop;
+            }
+
+            /// <summary>
+            /// Error handling for main SQL query
+            /// </summary>
+            public SqlQueryErrorHandlingOptions MainQuery { get; set; } = new();
+
+            /// <summary>
+            /// Error handling for check SQL query
+            /// </summary>
+            public SqlQueryErrorHandlingOptions CheckQuery { get; set; } = new();
+
+            /// <summary>
+            /// Error handling for ReC HTTP request
+            /// </summary>
+            public HttpRequestErrorHandlingOptions ReCRequest { get; set; } = new();
+        }
+
+        /// <summary>
+        /// Error handling configuration
+        /// </summary>
+        public DexJobErrorHandlingOptions Error { get; set; } = new();
+
+        /// <summary>
+        /// Placeholder configuration for dynamic value replacement
+        /// </summary>
+        public record PlaceHolderOptions
+        {
+            /// <summary>
+            /// Configuration for a single placeholder
+            /// </summary>
+            public record PlaceHolder
+            {
+                /// <summary>
+                /// Regex pattern to match the placeholder
+                /// </summary>
+                public string Pattern { get; set; } = null!;
+
+                /// <summary>
+                /// Regex options for pattern matching
+                /// </summary>
+                public RegexOptions RegexOptions { get; set; } = RegexOptions.IgnoreCase;
+            }
+
+            /// <summary>
+            /// BatchId placeholder configuration
+            /// </summary>
+            public PlaceHolder BatchId { get; set; } = new()
+            {
+                Pattern = "#INT#BATCH_ID",
+                RegexOptions = RegexOptions.IgnoreCase
+            };
+        }
+
+        /// <summary>
+        /// Placeholder configuration
+        /// </summary>
+        public PlaceHolderOptions Placeholders { get; set; } = new();
+    }
+}