Core

using Agent.Core.TextToSpeech;​namespace Agent.Core;​/// <summary>/// Root hub for agent addons. Create one instance and access <see cref="Logger"/>,/// <see cref="OllamaClient"/>, and future services from the same object./// </summary>public class Core(Action<LogEntry>? onLog = null){    private static Core? _default;​    /// <summary>Shared application core (optional).</summary>    public static Core Default => _default ??= new();​    /// <summary>Subscribe-based logging (console, GUI, file, etc.).</summary>    public Logger Logger { get; } = new(onLog);​    /// <summary>    /// Ollama client addon. Assign after construction or via <see cref="UseOllamaAsync"/>.    /// </summary>    public OllamaClient? OllamaClient { get; set; }​    /// <summary>    /// KokoroSharp text-to-speech addon. Assign via <see cref="UseKokoroAsync"/>.    /// </summary>    public KokoroTts? TextToSpeech { get; set; }​    /// <summary>Attach an Ollama client and return it for chaining.</summary>    public OllamaClient UseOllama(OllamaClient ollamaClient)    {        OllamaClient = ollamaClient ?? throw new ArgumentNullException(nameof(ollamaClient));        return ollamaClient;    }​    /// <summary>    /// Creates and attaches an Ollama client (install/wait/pull model as in OS-Lilith addon).    /// </summary>    public async Task<OllamaClient> UseOllamaAsync(string model, string systemPrompt, bool startOllamaIfNotRunning = true)    {        var client = await OllamaClient.CreateClient(model, systemPrompt, Logger, startOllamaIfNotRunning);        return UseOllama(client);    }​    /// <summary>Attach a Kokoro TTS service and return it for chaining.</summary>    public KokoroTts UseKokoro(KokoroTts kokoroTts)    {        TextToSpeech = kokoroTts ?? throw new ArgumentNullException(nameof(kokoroTts));        return kokoroTts;    }​    /// <summary>Create and attach Kokoro TTS (<see href="https://github.com/Lyrcaxis/KokoroSharp/">KokoroSharp</see>).</summary>    public async Task<KokoroTts> UseKokoroAsync(KokoroTtsOptions? options = null, CancellationToken cancellationToken = default)    {        var tts = await KokoroTts.CreateAsync(Logger, options, cancellationToken).ConfigureAwait(false);        return UseKokoro(tts);    }}​