Ship Assistent 0.12.1: training tab, dataset pipeline, and heard RAG.

Restructure UI with app-level tabs and chat history drawer; add dataset curation,
HF import, Modelfile/QLoRA hooks, and link approved samples to the agent immediately
via heard vector memory without waiting for fine-tuning.

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

AssistentMemory.cs

@@ -37,8 +37,12 @@ public sealed partial class AssistentMemory : IDisposable
         ["note"] = 4,
         ["model"] = 2,
         ["aspect"] = 1,
+        ["heard"] = 3,
     };
 
+    public static Dictionary<string, int> CopyDefaultQuotas()
+        => new(DefaultQuotas, StringComparer.OrdinalIgnoreCase);
+
     readonly string _dataRoot;
     readonly string _dbPath;
     readonly HttpClient _http;
@@ -139,6 +143,14 @@ public sealed partial class AssistentMemory : IDisposable
             Logs.Debug($"AssistentMemory store schema: {ex.Message}");
         }
         try
+        {
+            EnsureTrainingSchema();
+        }
+        catch (Exception ex)
+        {
+            Logs.Debug($"AssistentMemory training schema: {ex.Message}");
+        }
+        try
         {
             EnsureUserPrefsSchema();
         }
@@ -857,7 +869,7 @@ public sealed partial class AssistentMemory : IDisposable
         {
             EnsureOpen();
             using SqliteCommand cmd = _conn.CreateCommand();
-            cmd.CommandText = "SELECT kind, key, text, source, persona, updated FROM memories WHERE kind = $kind AND key = $key";
+            cmd.CommandText = "SELECT kind, key, text, source, persona, updated, meta_json FROM memories WHERE kind = $kind AND key = $key";
             cmd.Parameters.AddWithValue("$kind", kind);
             cmd.Parameters.AddWithValue("$key", key);
             using SqliteDataReader reader = cmd.ExecuteReader();
@@ -885,6 +897,7 @@ public sealed partial class AssistentMemory : IDisposable
                     ["scope"] = shared ? "shared" : "personal",
                     ["persona"] = shared ? "shared" : persona,
                     ["updated"] = reader.IsDBNull(5) ? 0 : reader.GetInt64(5),
+                    ["meta_json"] = reader.IsDBNull(6) ? null : reader.GetString(6),
                 };
             }
         }