Shorten the multi-line rationale comments added by this PR across the
remaining changed files to 1-2 lines each, preserving intent (gotchas,
workarounds, why-notes). Comment-only changes; no code, strings, or
behavior altered. Verified: PowerShell AST parser, bash -n, and python
ast.parse all pass; diffs confirmed comment-only.
Files: install.ps1, scripts/uninstall.ps1, scripts/uninstall.sh,
studio/setup.sh, unsloth/models/_utils.py, unsloth/kernels/flex_attention.py
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>