feat: Add settings page for providers (#353)

settings/ProvidersSettingsPage.hpp

@@ -0,0 +1,43 @@
+// Copyright (C) 2024-2026 Petr Mironychev
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#pragma once
+
+#include <memory>
+
+#include <QObject>
+#include <QString>
+
+namespace Core { class IOptionsPage; }
+
+namespace QodeAssist::Providers {
+class ProviderInstanceFactory;
+class ProviderSecretsStore;
+class ProviderLauncher;
+}
+
+namespace QodeAssist::Settings {
+
+class ProvidersPageNavigator : public QObject
+{
+    Q_OBJECT
+public:
+    explicit ProvidersPageNavigator(QObject *parent = nullptr);
+
+    void requestSelectInstance(const QString &name);
+    QString takePendingSelection();
+
+signals:
+    void selectInstanceRequested(const QString &name);
+
+private:
+    QString m_pending;
+};
+
+std::unique_ptr<Core::IOptionsPage> createProvidersSettingsPage(
+    Providers::ProviderInstanceFactory *instanceFactory,
+    Providers::ProviderSecretsStore *secrets,
+    Providers::ProviderLauncher *launcher,
+    ProvidersPageNavigator *navigator);
+
+} // namespace QodeAssist::Settings