feat: implement semantic search, knowledge unit extraction, and visualization components

src/NexusReader.Application/Abstractions/Persistence/IApplicationDbContext.cs

@@ -0,0 +1,15 @@
+using Microsoft.EntityFrameworkCore;
+using NexusReader.Domain.Entities;
+
+namespace NexusReader.Application.Abstractions.Persistence;
+
+public interface IApplicationDbContext
+{
+    DbSet<SemanticKnowledgeCache> SemanticKnowledgeCache { get; }
+    DbSet<KnowledgeUnit> KnowledgeUnits { get; }
+    DbSet<KnowledgeUnitLink> KnowledgeUnitLinks { get; }
+    DbSet<Ebook> Ebooks { get; }
+    DbSet<QuizResult> QuizResults { get; }
+    
+    Task<int> SaveChangesAsync(CancellationToken cancellationToken = default);
+}