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diff --git a/indra/newview/llvelopack.h b/indra/newview/llvelopack.h
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+/**
+ * @file llvelopack.h
+ * @brief Velopack installer and update framework integration
+ *
+ * $LicenseInfo:firstyear=2025&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2025, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_LLVELOPACK_H
+#define LL_LLVELOPACK_H
+
+#if LL_VELOPACK
+
+#include <string>
+#include <functional>
+
+bool velopack_initialize();
+void velopack_check_for_updates(const std::string& required_version, const std::string& relnotes_url);
+std::string velopack_get_current_version();
+bool velopack_is_update_pending();
+bool velopack_is_required_update_in_progress();
+std::string velopack_get_required_update_version();
+bool velopack_should_restart_after_update();
+void velopack_request_restart_after_update();
+void velopack_apply_pending_update(bool restart = true);
+void velopack_set_update_url(const std::string& url);
+void velopack_set_progress_callback(std::function<void(int)> callback);
+void velopack_cleanup();
+
+#if LL_WINDOWS
+void clear_nsis_links();
+bool get_nsis_version(
+    int& nsis_major,
+    int& nsis_minor,
+    int& nsis_patch,
+    uint64_t& nsis_build);
+#endif
+
+#endif // LL_VELOPACK
+#endif
+// EOF