feat(ai-ux): deduplicate AI queries, handle ServiceUnavailable retries, and optimize reader canvas graph prerendering (#44)

This Pull Request encapsulates all outstanding AI, Blazor InteractiveAuto lifecycle, pgvector, and Firefox authorization/session compatibility fixes. ### Key Accomplishments: 1. **Concurrent Request Deduplication (Option B):** Implemented a thread-safe active task registry in `KnowledgeService` that groups concurrent graph extraction queries for the same content, preventing duplicate AI calls completely. 2. **Resilience Strategy for Downstream Demands:** Extended the `ai-retry` resilience pipeline to automatically intercept and retry on temporary Google API `503 ServiceUnavailable` / `high demand` spikes. 3. **Interactive Graph Generation Guard (Option A):** Prevented server-side prerender-phase graph requests in the reader canvas component. 4. **Firefox Compatibility & Cookie Handler:** Implemented an authentication endpoint and hybrid hidden-form submission flow to solve login, registration, and logout redirections and cookies securely. 5. **Autoscrolling & Graph Exclusions:** Added concept-to-block smooth scrolling, active block badging, and filtered out markdown code blocks from being extracted as nodes. All unit tests compiled and passed 100% cleanly. --------- Co-authored-by: Marek Jasiński <jasins.marek@gmail.com> Reviewed-on: #44 Co-authored-by: Antigravity <antigravity@google.com> Co-committed-by: Antigravity <antigravity@google.com>
2026-05-18 17:53:36 +00:00
parent f808734768
commit 541e9e1fb5
42 changed files with 2351 additions and 155 deletions
@@ -0,0 +1,71 @@
+using System;
+using System.Linq;
+using System.Threading.Tasks;
+using FluentAssertions;
+using GeminiDotnet;
+using GeminiDotnet.Extensions.AI;
+using Microsoft.Extensions.AI;
+using Xunit;
+
+namespace NexusReader.Application.Tests.Services;
+
+public class GeminiEmbeddingTests
+{
+    [Fact]
+    public async Task TestGeminiEmbedding_ModelsAndDimensions()
+    {
+        var apiKey = Environment.GetEnvironmentVariable("GEMINI_API_KEY");
+        if (string.IsNullOrEmpty(apiKey))
+        {
+            Console.WriteLine("Skipping test: GEMINI_API_KEY is not set.");
+            return;
+        }
+
+        // Test Model 1: gemini-embedding-001
+        try
+        {
+            var generator = new GeminiEmbeddingGenerator(new GeminiClientOptions
+            {
+                ApiKey = apiKey,
+                ModelId = "gemini-embedding-001"
+            });
+
+            // 1. Without dimensions (default)
+            var responseDefault = await generator.GenerateAsync(new[] { "Hello world" });
+            var vectorDefault = responseDefault.First().Vector.ToArray();
+            Console.WriteLine($"[TEST] gemini-embedding-001 default dimensions: {vectorDefault.Length}");
+
+            // 2. With 768 dimensions
+            var response768 = await generator.GenerateAsync(new[] { "Hello world" }, new EmbeddingGenerationOptions { Dimensions = 768 });
+            var vector768 = response768.First().Vector.ToArray();
+            Console.WriteLine($"[TEST] gemini-embedding-001 768 dimensions: {vector768.Length}");
+
+            // 3. With 1536 dimensions
+            var response1536 = await generator.GenerateAsync(new[] { "Hello world" }, new EmbeddingGenerationOptions { Dimensions = 1536 });
+            var vector1536 = response1536.First().Vector.ToArray();
+            Console.WriteLine($"[TEST] gemini-embedding-001 1536 dimensions: {vector1536.Length}");
+        }
+        catch (Exception ex)
+        {
+            Console.WriteLine($"[TEST] gemini-embedding-001 failed: {ex}");
+        }
+
+        // Test Model 2: models/embedding-001
+        try
+        {
+            var generator = new GeminiEmbeddingGenerator(new GeminiClientOptions
+            {
+                ApiKey = apiKey,
+                ModelId = "models/embedding-001"
+            });
+
+            var response = await generator.GenerateAsync(new[] { "Hello world" });
+            var vector = response.First().Vector.ToArray();
+            Console.WriteLine($"[TEST] models/embedding-001 default dimensions: {vector.Length}");
+        }
+        catch (Exception ex)
+        {
+            Console.WriteLine($"[TEST] models/embedding-001 failed: {ex}");
+        }
+    }
+}