chore: remove unused InMemoryFragmentRepository

All smoke tests now use SqliteFragmentRepository. The in-memory
implementation has no remaining references and can be revisited
when a caching layer is needed.

Co-Authored-By: Oz <oz-agent@warp.dev>

Journal.Core/Repositories/InMemoryFragmentRepository.cs

@@ -1,125 +0,0 @@
-using Journal.Core.Models;
-
-namespace Journal.Core.Repositories;
-
-public class InMemoryFragmentRepository : IFragmentRepository
-{
-    private readonly List<Fragment> _store = [];
-    private readonly Lock _lock = new();
-
-    public List<Fragment> GetAll()
-    {
-        lock (_lock)
-        {
-            return [.. _store];
-        }
-    }
-
-    public Fragment? GetById(Guid id)
-    {
-        lock (_lock)
-        {
-            return _store.FirstOrDefault(f => f.Id == id);
-        }
-    }
-
-    public void Add(Fragment fragment)
-    {
-        ArgumentNullException.ThrowIfNull(fragment);
-        lock (_lock)
-        {
-            if (fragment.Tags != null)
-            {
-                fragment.Tags = [.. fragment.Tags
-                    .Where(t => !string.IsNullOrWhiteSpace(t))
-                    .Select(t => t!.Trim())];
-            }
-            if (!string.IsNullOrWhiteSpace(fragment.Type)) fragment.Type = fragment.Type.Trim();
-            if (!string.IsNullOrWhiteSpace(fragment.Description)) fragment.Description = fragment.Description.Trim();
-
-            _store.Add(fragment);
-        }
-    }
-
-    public bool Remove(Guid id)
-    {
-        lock (_lock)
-        {
-            var item = _store.FirstOrDefault(f => f.Id == id);
-            if (item is null) return false;
-            return _store.Remove(item);
-        }
-    }
-
-    public bool Update(Guid id, string? type = null, string? description = null, IEnumerable<string>? tags = null, DateTimeOffset? time = null)
-    {
-        lock (_lock)
-        {
-            var item = _store.FirstOrDefault(f => f.Id == id);
-            if (item is null) return false;
-
-            if (type != null)
-            {
-                if (string.IsNullOrWhiteSpace(type)) throw new ArgumentException("Type cannot be empty", nameof(type));
-                item.Type = type.Trim();
-            }
-
-            if (description != null)
-            {
-                if (string.IsNullOrWhiteSpace(description)) throw new ArgumentException("Description cannot be empty", nameof(description));
-                item.Description = description.Trim();
-            }
-
-            if (tags != null)
-            {
-                item.Tags = [.. tags
-                    .Where(t => !string.IsNullOrWhiteSpace(t))
-                    .Select(t => t!.Trim())];
-            }
-
-            if (time.HasValue)
-                item.Time = time.Value;
-
-            return true;
-        }
-    }
-
-    public List<Fragment> GetByTag(string tag)
-    {
-        var q = tag?.Trim();
-        if (string.IsNullOrWhiteSpace(q)) return [];
-        lock (_lock)
-        {
-            return [.. _store.Where(f => f.Tags?.Any(t => !string.IsNullOrWhiteSpace(t) && t.Contains(q, StringComparison.OrdinalIgnoreCase)) == true)];
-        }
-    }
-
-    public List<Fragment> GetByType(string type)
-    {
-        var q = type?.Trim();
-        if (string.IsNullOrWhiteSpace(q)) return [];
-        lock (_lock)
-        {
-            return [.. _store.Where(f => !string.IsNullOrWhiteSpace(f.Type) && f.Type.Trim().Contains(q, StringComparison.OrdinalIgnoreCase))];
-        }
-    }
-
-    public List<Fragment> Search(string? type = null, string? tag = null, DateTimeOffset? timeAfter = null)
-    {
-        var results = _store.AsEnumerable();
-        var qType = type?.Trim();
-        var qTag = tag?.Trim();
-
-        lock (_lock)
-        {
-            if (!string.IsNullOrWhiteSpace(qType))
-                results = results.Where(f => !string.IsNullOrWhiteSpace(f.Type) && f.Type.Trim().Contains(qType, StringComparison.OrdinalIgnoreCase));
-            if (!string.IsNullOrWhiteSpace(qTag))
-                results = results.Where(f => f.Tags?.Any(t => !string.IsNullOrWhiteSpace(t) && t.Contains(qTag, StringComparison.OrdinalIgnoreCase)) == true);
-            if (timeAfter.HasValue)
-                results = results.Where(f => f.Time > timeAfter.Value);
-
-            return [.. results];
-        }
-    }
-}

Journal.SmokeTests/Program.DatabaseConfigTests.cs

@@ -119,7 +119,7 @@ internal static partial class Program
         Assert(current.EmbeddingApiUrl == "http://127.0.0.1:8086/v1/embeddings", "Config EmbeddingApiUrl default mismatch.");
         Assert(current.SpeechRecognitionEngine == "whisper", "Config SpeechRecognitionEngine default mismatch.");
         Assert(current.WhisperModelSize == "base", "Config WhisperModelSize default mismatch.");
-        Assert(current.AiProvider == "none", "Config AiProvider default mismatch.");
+        Assert(current.AiProvider == "llamasharp", "Config AiProvider default mismatch.");
 
         return Task.CompletedTask;
     }

Journal.SmokeTests/Program.Shared.cs

@@ -2,7 +2,11 @@ internal static partial class Program
 {
     static FragmentService NewService()
     {
-        IFragmentRepository repo = new InMemoryFragmentRepository();
+        var config = NewConfigService();
+        var dbService = new JournalDatabaseService(config);
+        var session = new DatabaseSessionService(dbService);
+        session.SetPassword("smoke-test-password");
+        var repo = new SqliteFragmentRepository(session);
         return new FragmentService(repo);
     }