Tighten structural asset phrase extraction

PlotLine.Tests/Program.cs

@@ -42,6 +42,7 @@ var tests = new (string Name, Action Test)[]
     ("Asset canonical keys merge trivial variants", AssetCanonicalKeysMergeTrivialVariants),
     ("Asset canonical keys merge contextual vehicle variants", AssetCanonicalKeysMergeContextualVehicleVariants),
     ("Asset contextual names resolve POV ownership", AssetContextualNamesResolvePovOwnership),
+    ("Asset structural phrases trim neighbouring nouns", AssetStructuralPhrasesTrimNeighbouringNouns),
     ("Relationship signals map to broad lookup types", RelationshipSignalsMapToBroadTypes),
     ("Relationship signals infer friendship without romance", RelationshipSignalsInferFriendshipWithoutRomance),
     ("Relationship events preserve chronological story order", RelationshipEventsPreserveChronologicalStoryOrder),
@@ -1326,6 +1327,11 @@ static void AssetContextualNamesResolvePovOwnership()
     Assert(IsAssetNameCandidate("Beth's Memory Tin"), "Owned Memory Tin-style significant objects should be retained.");
 }
 
+static void AssetStructuralPhrasesTrimNeighbouringNouns()
+{
+    Assert(CleanStructuralAssetPhrase("memory tin and photographs") == "memory tin", "Structural asset extraction should not bundle neighbouring nouns after and.");
+}
+
 static void RelationshipSignalsMapToBroadTypes()
 {
     Assert(RelationshipTypeFromSignal("Friend") == "Friend", "Friend should map to Friend.");
@@ -1423,6 +1429,15 @@ static string ResolveContextualAssetName(string name, string? ownerOrHolder, Sce
     return (string)method!.Invoke(null, [name, ownerOrHolder, scene])!;
 }
 
+static string CleanStructuralAssetPhrase(string name)
+{
+    var method = typeof(StoryIntelligenceAssetImportService).GetMethod(
+        "CleanStructuralAssetPhrase",
+        System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Static);
+    Assert(method is not null, "CleanStructuralAssetPhrase was not found.");
+    return (string)method!.Invoke(null, [name])!;
+}
+
 static IComparable StoryOrderKey((int SceneID, decimal ChapterNumber, decimal SceneNumber, int SortOrder) shim)
 {
     var nested = typeof(StoryIntelligenceRelationshipImportService).GetNestedType(

PlotLine/Services/StoryIntelligenceAssetImportService.cs

@@ -462,7 +462,7 @@ public sealed class StoryIntelligenceAssetImportService(
         foreach (Match match in StructuralPossessiveAssetPattern.Matches(source))
         {
             var owner = match.Groups["owner"].Value;
-            var objectName = match.Groups["asset"].Value;
+            var objectName = CleanStructuralAssetPhrase(match.Groups["asset"].Value);
             if (string.IsNullOrWhiteSpace(owner) || string.IsNullOrWhiteSpace(objectName))
             {
                 continue;
@@ -482,7 +482,7 @@ public sealed class StoryIntelligenceAssetImportService(
 
         foreach (Match match in StructuralSignificantAssetPattern.Matches(source))
         {
-            var objectName = match.Groups["asset"].Value;
+            var objectName = CleanStructuralAssetPhrase(match.Groups["asset"].Value);
             if (string.IsNullOrWhiteSpace(objectName) || !IsOwnedAssetName(objectName))
             {
                 continue;
@@ -912,6 +912,26 @@ public sealed class StoryIntelligenceAssetImportService(
     private static string CleanAssetName(string? value)
         => StoryIntelligenceEntityTextNormaliser.CleanName(value);
 
+    private static string CleanStructuralAssetPhrase(string? value)
+    {
+        var clean = CleanAssetName(value);
+        if (string.IsNullOrWhiteSpace(clean))
+        {
+            return string.Empty;
+        }
+
+        foreach (var separator in StructuralAssetTailSeparators)
+        {
+            var index = clean.IndexOf(separator, StringComparison.OrdinalIgnoreCase);
+            if (index > 0)
+            {
+                clean = clean[..index].Trim();
+            }
+        }
+
+        return clean;
+    }
+
     private static string RemoveLeadingArticle(string value)
         => value.StartsWith("the ", StringComparison.OrdinalIgnoreCase)
             ? value[4..]
@@ -930,6 +950,16 @@ public sealed class StoryIntelligenceAssetImportService(
     private static HashSet<string> CreateSet(params string[] values)
         => values.Select(Normalise).ToHashSet(StringComparer.OrdinalIgnoreCase);
 
+    private static readonly string[] StructuralAssetTailSeparators =
+    [
+        " and ",
+        " or ",
+        " while ",
+        " that ",
+        " which ",
+        ","
+    ];
+
     private static readonly Regex StructuralPossessiveAssetPattern = new(
         @"\b(?<owner>[A-Z][\p{L}'-]{1,40})'s\s+(?<asset>[A-Z][\p{L}\p{N}'-]*(?:\s+[A-Z][\p{L}\p{N}'-]*){0,3})\b",
         RegexOptions.Compiled);