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docs/WINDOWS.md (the #329 install walkthrough) and docs/windows.md (the concise reference from the README restructure) differ only in case. On case-insensitive filesystems — every default Windows and macOS checkout — the two paths collide: the working tree can never be clean, and `git rebase`/`git status` refuse to run. @KingIcyCreamProjects reported it. Everything links to the lowercase docs/windows.md (README.md, README.zh-TW.md, docs/cuda.md), so that is the canonical name. This keeps it and folds in both contents: the step-by-step walkthrough (download-first, Smart App Control, CUDA DLL, first run, reference numbers, failure index) followed by the build-flags reference (AVX-VNNI, warmup). docs/WINDOWS.md is removed. No links change. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>