server : fix image blocks in tool_result being dropped during Anthropic OpenAI conversion (#22536) server : fix image blocks in tool_result being dropped during Anthropic→OpenAI conversion server_chat_convert_anthropic_to_oai() silently discarded image blocks inside Anthropic tool_result content. This broke multimodal tool outputs (e.g. a tool that returns an image) because the model never received the image. When tool_result contains image blocks, convert them to OpenAI multimodal content parts (text + image_url array). Plain-text results remain simple strings for backwards compatibility. server : add test for image blocks in Anthropic tool_result conversion macOS/iOS: macOS Apple Silicon (arm64) macOS Apple Silicon (arm64, KleidiAI enabled) DISABLED macOS Intel (x64) iOS XCFramework Linux: Ubuntu x64 (CPU) Ubuntu arm64 (CPU) Ubuntu s390x (CPU) Ubuntu x64 (Vulkan) Ubuntu arm64 (Vulkan) Ubuntu x64 (ROCm 7.2) Ubuntu x64 (OpenVINO) Ubuntu x64 (SYCL FP32) Ubuntu x64 (SYCL FP16) Android: Android arm64 (CPU) Windows: Windows x64 (CPU) Windows arm64 (CPU) Windows arm64 (OpenCL Adreno) Windows x64 (CUDA 12) - CUDA 12.4 DLLs Windows x64 (CUDA 13) - CUDA 13.3 DLLs Windows x64 (Vulkan)…