feat: integrate AI-driven selection panel with context-aware text summarization and quiz generation features.

src/NexusReader.Application/Abstractions/Services/IKnowledgeService.cs

@@ -6,5 +6,7 @@ namespace NexusReader.Application.Abstractions.Services;
 public interface IKnowledgeService
 {
     Task<Result<KnowledgePacket>> GetKnowledgeAsync(string text, CancellationToken cancellationToken = default);
+    Task<Result<KnowledgePacket>> GetGraphDataAsync(string text, CancellationToken cancellationToken = default);
+    Task<Result<KnowledgePacket>> GetSummaryAndQuizAsync(string text, CancellationToken cancellationToken = default);
     Task<Result> ClearCacheAsync(CancellationToken cancellationToken = default);
 }

src/NexusReader.Application/DTOs/AI/KnowledgePacket.cs

@@ -18,4 +18,5 @@ public record KnowledgePacket
     [JsonPropertyName("concepts")] public List<KeyConcept> Concepts { get; init; } = new();
     [JsonPropertyName("quizzes")] public List<QuizQuestion> Quizzes { get; init; } = new();
     [JsonPropertyName("graph")] public NexusReader.Application.Queries.Graph.GraphDataDto? Graph { get; init; }
+    [JsonPropertyName("summary")] public string? Summary { get; init; }
 }