Detect VK_ERROR_DEVICE_LOST (-4) in vkAcquireNextImageKHR, vkQueueSubmit
and vkQueuePresentKHR and mark m_deviceLost.
Add handleDeviceLost() and recreateDevice() to stop the render timer,
cleanup and rebuild surface, logical device, swapchain, command objects,
sync objects and VulkanRenderer, then restart rendering on success.
Add DEVICE_LOST_RECOVERY.md with recovery docs and remove the obsolete
REFACTORING_SUMMARY.md
