clangd's database is the one CMake Tools copies from the selected preset, as in libavr, rather than one chip's tree. .gitattributes drops two Studio patterns nothing here matches, .clangd is ASCII, and the comments in it, check.sh and .gitattributes state the reason without the account of how it was found. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>