Fix duplicate critical affix import fragments

src/RolemasterDb.ImportTool.Tests/StandardCriticalTableParserIntegrationTests.cs

@@ -1,3 +1,5 @@
+using System.Linq;
+
 using Microsoft.EntityFrameworkCore;
 
 using RolemasterDb.App.Data;
@@ -115,6 +117,25 @@ public sealed class StandardCriticalTableParserIntegrationTests
         Assert.Contains(expectedSnippet, result.DescriptionText, StringComparison.OrdinalIgnoreCase);
     }
 
+    [Fact]
+    public async Task Arcane_aether_c_31_has_single_bleed_effect()
+    {
+        var entry = LoadManifest().Tables.Single(item => string.Equals(item.Slug, "arcane-aether", StringComparison.Ordinal));
+        var parseResult = await LoadParseResultAsync(entry);
+        var result = parseResult.Table.Results.Single(item =>
+            item.GroupKey is null &&
+            string.Equals(item.RollBandLabel, "31-40", StringComparison.Ordinal) &&
+            string.Equals(item.ColumnKey, "C", StringComparison.Ordinal));
+
+        var bleedEffects = result.Effects
+            .Where(effect => effect.EffectCode == CriticalEffectCodes.BleedPerRound)
+            .ToList();
+
+        Assert.Equal("+15H – ∑ – ∫", result.RawAffixText);
+        Assert.Single(bleedEffects);
+        Assert.Equal(1, bleedEffects.Single().PerRound);
+    }
+
     [Fact]
     public async Task Slash_boundary_repair_keeps_56_60_a_prose_first()
     {

src/RolemasterDb.ImportTool/Parsing/CriticalTableParserSupport.cs

@@ -30,7 +30,7 @@ internal static class CriticalTableParserSupport
 
         var document = XDocument.Load(xmlReader);
 
-        return document.Descendants("page")
+        var fragments = document.Descendants("page")
             .SelectMany(page =>
             {
                 var pageNumber = int.Parse(page.Attribute("number")?.Value ?? "1");
@@ -45,6 +45,8 @@ internal static class CriticalTableParserSupport
                     .Where(item => !string.IsNullOrWhiteSpace(item.Text));
             })
             .ToList();
+
+        return RemoveRedundantContainedFragments(fragments);
     }
 
     internal static List<XmlTextFragment> FindRowLabelFragments(
@@ -263,6 +265,56 @@ internal static class CriticalTableParserSupport
             .Replace('’', '\'')
             .Trim();
 
+    private static List<XmlTextFragment> RemoveRedundantContainedFragments(IReadOnlyList<XmlTextFragment> fragments)
+    {
+        var redundant = new HashSet<XmlTextFragment>();
+
+        foreach (var group in fragments.GroupBy(item => (item.PageNumber, item.Top, item.Height)))
+        {
+            var ordered = group
+                .OrderByDescending(item => item.Width)
+                .ThenBy(item => item.Left)
+                .ToList();
+
+            for (var index = 0; index < ordered.Count; index++)
+            {
+                var container = ordered[index];
+                if (container.Text.Length <= 1)
+                {
+                    continue;
+                }
+
+                for (var candidateIndex = index + 1; candidateIndex < ordered.Count; candidateIndex++)
+                {
+                    var candidate = ordered[candidateIndex];
+                    if (candidate.Width > container.Width ||
+                        !container.Text.Contains(candidate.Text, StringComparison.Ordinal) ||
+                        !IsHorizontallyContained(candidate, container))
+                    {
+                        continue;
+                    }
+
+                    redundant.Add(candidate);
+                }
+            }
+        }
+
+        return fragments
+            .Where(item => !redundant.Contains(item))
+            .ToList();
+    }
+
+    private static bool IsHorizontallyContained(XmlTextFragment candidate, XmlTextFragment container)
+    {
+        const int containmentTolerance = 1;
+
+        var candidateRight = candidate.Left + candidate.Width;
+        var containerRight = container.Left + container.Width;
+
+        return candidate.Left >= container.Left - containmentTolerance &&
+               candidateRight <= containerRight + containmentTolerance;
+    }
+
     internal static string? NormalizeConditionKey(string conditionText)
     {
         var normalized = CollapseWhitespace(conditionText)