feat: implement dynamic knowledge graph updates and state management services

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

@@ -6,4 +6,5 @@ namespace NexusReader.Application.Abstractions.Services;
 public interface IKnowledgeService
 {
     Task<Result<KnowledgePacket>> GetKnowledgeAsync(string text, CancellationToken cancellationToken = default);
+    Task<Result> ClearCacheAsync(CancellationToken cancellationToken = default);
 }

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

@@ -13,7 +13,9 @@ public record QuizQuestion(
     [property: JsonPropertyName("correct_index")] int CorrectIndex
 );
 
-public record KnowledgePacket(
-    [property: JsonPropertyName("concepts")] List<KeyConcept> Concepts,
-    [property: JsonPropertyName("quizzes")] List<QuizQuestion> Quizzes
-);
+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; }
+}

src/NexusReader.Application/Queries/Graph/GetKnowledgeGraphQueryHandler.cs

@@ -7,24 +7,9 @@ internal sealed class GetKnowledgeGraphQueryHandler : IQueryHandler<GetKnowledge
 {
     public Task<Result<GraphDataDto>> Handle(GetKnowledgeGraphQuery request, CancellationToken cancellationToken)
     {
-        var nodes = new List<GraphNodeDto>
-        {
-            new("renesans-intro", "Renesans", "Concept"),
-            new("florencja", "Florencja", "Location"),
-            new("medyceusze", "Medyceusze", "Entity"),
-            new("da-vinci-ai", "Leonardo da Vinci", "Person"),
-            new("humanizm", "Humanizm", "Concept")
-        };
+        var nodes = new List<GraphNodeDto>();
+        var links = new List<GraphLinkDto>();
 
-        var links = new List<GraphLinkDto>
-        {
-            new("renesans-intro", "florencja", 1),
-            new("florencja", "medyceusze", 2),
-            new("medyceusze", "da-vinci-ai", 3),
-            new("renesans-intro", "humanizm", 1),
-            new("da-vinci-ai", "humanizm", 2)
-        };
-
-        return Task.FromResult(Result.Ok(new GraphDataDto(nodes, links)));
+        return Task.FromResult(Result.Ok(new GraphDataDto { Nodes = nodes, Links = links }));
     }
 }

src/NexusReader.Application/Queries/Graph/GraphViewModels.cs

@@ -2,4 +2,8 @@ namespace NexusReader.Application.Queries.Graph;
 
 public record GraphNodeDto(string Id, string Label, string Group);
 public record GraphLinkDto(string Source, string Target, int Value);
-public record GraphDataDto(List<GraphNodeDto> Nodes, List<GraphLinkDto> Links);
+public record GraphDataDto
+{
+    public List<GraphNodeDto> Nodes { get; init; } = new();
+    public List<GraphLinkDto> Links { get; init; } = new();
+}