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MeetingAssistant/Summary/MeetingSummaryFrontmatterFactory.cs

@@ -24,7 +24,7 @@ internal static class MeetingSummaryFrontmatterFactory
             artifacts.SummaryPath,
             meetingNote,
             cancellationToken);
-        frontmatter.Projects = CopyNonEmptyList(meetingNote.Frontmatter.Projects);
+        frontmatter.Projects = CopyNonEmptyProjectList(meetingNote.Frontmatter.Projects);
         return frontmatter;
     }
 
@@ -42,6 +42,16 @@ internal static class MeetingSummaryFrontmatterFactory
         return values.Count == 0 ? null : values.ToList();
     }
 
+    private static List<string>? CopyNonEmptyProjectList(IEnumerable<string> values)
+    {
+        var projects = values
+            .Where(value => !string.IsNullOrWhiteSpace(value))
+            .Select(value => value.Trim())
+            .Distinct(StringComparer.OrdinalIgnoreCase)
+            .ToList();
+        return projects.Count == 0 ? null : projects;
+    }
+
     private static async Task<List<string>?> ReadExistingSummaryAttendeesAsync(
         string summaryPath,
         CancellationToken cancellationToken)