fix(security): Resolve SonarQube security hotspots

Introduce a default regex match timeout across the library to prevent potential ReDoS attacks (SonarQube rule S6444).
Implement `[OnDeserialized]` methods to re-establish object invariants and validate state after deserialization, addressing SonarQube rule S5766.

src/Strata.SqlTools.SqlServer/Breakdowns/DeleteBreakdown.cs

@@ -145,7 +145,7 @@ public class DeleteBreakdown : SqlBreakdownBase
             // Check if it's a DELETE statement
             var sqlTrimmed = sql.TrimStart();
             if (!System.Text.RegularExpressions.Regex.IsMatch(sqlTrimmed, @"^\s*DELETE\b",
-                System.Text.RegularExpressions.RegexOptions.IgnoreCase))
+                System.Text.RegularExpressions.RegexOptions.IgnoreCase, Strata.SqlTools.SqlBreakdown.Utilities.RegexDefaults.MatchTimeout))
             {
                 errorMessage = "SQL statement must start with DELETE.";
                 return false;
@@ -162,14 +162,14 @@ public class DeleteBreakdown : SqlBreakdownBase
             // Pattern: DELETE [table_alias] FROM table WHERE condition
             var deleteMatch = System.Text.RegularExpressions.Regex.Match(sql,
                 @"DELETE\s+(.*?)\s+FROM\s+(.*?)(?:\s+WHERE\s+(.*))?$",
-                System.Text.RegularExpressions.RegexOptions.IgnoreCase | System.Text.RegularExpressions.RegexOptions.Singleline);
+                System.Text.RegularExpressions.RegexOptions.IgnoreCase | System.Text.RegularExpressions.RegexOptions.Singleline, Strata.SqlTools.SqlBreakdown.Utilities.RegexDefaults.MatchTimeout);
 
             if (!deleteMatch.Success)
             {
                 // Try simpler pattern: DELETE FROM table WHERE condition
                 deleteMatch = System.Text.RegularExpressions.Regex.Match(sql,
                     @"DELETE\s+FROM\s+(.*?)(?:\s+WHERE\s+(.*))?$",
-                    System.Text.RegularExpressions.RegexOptions.IgnoreCase | System.Text.RegularExpressions.RegexOptions.Singleline);
+                    System.Text.RegularExpressions.RegexOptions.IgnoreCase | System.Text.RegularExpressions.RegexOptions.Singleline, Strata.SqlTools.SqlBreakdown.Utilities.RegexDefaults.MatchTimeout);
 
                 if (!deleteMatch.Success)
                 {