Replace absolute F:/C: paths with repo-relative (../TombaRecomp, bios/, beetle-psx/)
or placeholders (<desktop>/<psxref>/<nesrecomp>/<psxrecomp-v4>) across accuracy docs,
WIDESCREEN/SHADOW/RECURSION_BUG/config_schema/ISSUES/README, and tools/*.py|.ps1.
Removed a personal C:\Users\Matthew\Desktop path (ISSUES.md). Left CLAUDE.md/PLAN.md
sibling-project + version-history paths intact (intentional layout documentation).