Add FTS lookup for seeded Civitai Krea2 prompt examples.

Index Assistent/civitai-examples.jsonl without embeddings and expose AssistentLookupExamples plus ask:examples hop for remix references.

Co-authored-by: Cursor <cursoragent@cursor.com>

AssistentMemory.cs

@@ -414,6 +414,7 @@ public sealed partial class AssistentMemory : IDisposable
         if (docs.Count == 0)
         {
             TryIndexTags();
+            TryIndexExamples();
             return;
         }
 
@@ -434,6 +435,7 @@ public sealed partial class AssistentMemory : IDisposable
             if (!missing)
             {
                 TryIndexTags();
+                TryIndexExamples();
                 return;
             }
         }
@@ -447,6 +449,7 @@ public sealed partial class AssistentMemory : IDisposable
         {
             Logs.Debug($"AssistentMemory seed defer (embed unavailable): {ex.Message}");
             TryIndexTags();
+            TryIndexExamples();
             return;
         }
 
@@ -505,6 +508,7 @@ public sealed partial class AssistentMemory : IDisposable
             }
         }
         TryIndexTags();
+        TryIndexExamples();
     }
 
     public void Upsert(string kind, string key, string text, string source, JToken meta, float[] embedding, string persona = null)