igir-report.ps1: read-only igir report over the EmuDeck tree on valhalla,
matching ROMs by checksum against libretro's No-Intro + Redump DAT sets
(sparse-cloned + cached). Scoped (-Platforms) or whole-library (-All);
CSV per run under /storage1/igir/reports. Uses node:lts (alpine breaks
igir on musl) and metadat/no-intro (not the curated dat/ folder).
igir-strip-snes-headers.sh: reversible backup-then-strip of 512-byte SNES
copier headers (size%1024==512) that igir can't auto-detect, renaming to
.sfc so headered ROMs match headerless No-Intro.
