UPSTREAM PR #17836: console: allow using arrow left/right, home/end keys and history mode

[loci-dev]

Mirrored from ggml-org/llama.cpp#17836

Fix ggml-org/llama.cpp#17828

Fix ggml-org/llama.cpp#17829

To test it, run llama-cli, write some text (without sending it) and use left/right arrows to edit them`

Home/end key support is allso added thanks to @ServeurpersoCom

Disclosure AI usage: next_utf8_char_pos is written by AI because I have no experience working with windows API. The rest is mostly written by me (minus some small auto-completion)

[loci-review]

Explore the complete analysis inside the Version Insights

Performance Analysis Summary - PR #478

Analysis Overview

This PR modifies console input handling in common/console.cpp, adding arrow key navigation, home/end key support, and command history. The changes are isolated to the console I/O module and do not affect inference operations.

Performance analysis shows no measurable impact across all binaries. The maximum observed change is +0.001% (+1.86 nJ) in build.bin.llama-run, which falls within measurement noise. No functions in the inference pipeline (llama_decode, llama_encode, llama_tokenize) were modified or show performance changes. The console module operates outside the critical path for model inference and token processing. Power consumption remains stable across all 16 analyzed binaries, with core libraries (libllama.so, libggml-cpu.so, libggml-base.so) showing zero change.