b12121

<details open> llama : fix on-device state copy sizes for quantized KV caches (#30541) * llama : fix on-device state copy sizes for quantized KV caches The on-device sequence state copies (LLAMA_STATE_SEQ_FLAGS_ON_DEVICE) computed their element count as size / ggml_element_size(). For a quantized type such as q8_0 or q4_0 that is the number of blocks, not elements, so only part of each range was copied: the restored state was wrong, or the copy crashed. Compute the count as size / ggml_type_size() * ggml_blck_size() for the save, the restore and the copy between differently chunked ranges, and assert that each range covers whole blocks. * llama : drop the one-line comments * llama : drop the redundant cast in the state copy size </details> **Website:** - <https://llama.app> **Attestations:** - <https://github.com/ggml-org/llama.cpp/attestations/63869663> **macOS/iOS:** - [macOS Apple Silicon (arm64)](https://github.com/ggml-org/llama.cpp/releases/download/b12121/llama-b12121-bin-macos-arm64.tar.gz) - macOS Apple Silicon (arm64, KleidiAI enabled) [DISABLED](https://github.com/ggml-org/llama.cpp/pull/23780) - [macOS Intel (x64)](https://github.com/ggml-org/llama.cpp/releases/download/b12121/llama-b12121-bin-macos-x64.tar.gz) - [iOS XCFramework](https://github.com/ggml-org/llama.cpp/releases/download/b12121/llama-b12121-xcframework.zip) **Linux:** - [Ubuntu x64 (CPU)](https://github.com/ggml-org/llama.cpp/releases/download/b12121/llama-b12121-bin-ubuntu-x64.tar.gz) - 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