Restructured the Getting Started guide into a numbered step-by-step path for easier readability. Added a Hello World verification step to confirm build integrity after build completion. Additionally, updated build_concepts.rst and the Getting Started guide to clarify that Overlay Mode is intended for augmenting the system's C library rather than incremental adoption.
LLVM libc ========= This directory and its subdirectories contain source code for llvm-libc, a retargetable implementation of the C standard library. LLVM is open source software. You may freely distribute it under the terms of the license agreement found in LICENSE.txt.