diff --git a/scripts/igir-report.ps1 b/scripts/igir-report.ps1
new file mode 100644
index 0000000..3b104fc
--- /dev/null
+++ b/scripts/igir-report.ps1
@@ -0,0 +1,95 @@
+#!/usr/bin/env pwsh
+# scripts/igir-report.ps1
+#
+# Run the igir ROM collection manager in REPORT mode (read-only) against the
+# EmuDeck tree at /storage1/Emulation/roms on valhalla, matching ROMs by
+# checksum against the full No-Intro + Redump DAT sets. Produces a CSV per run
+# under /storage1/igir/reports listing FOUND / MISSING / UNUSED per system.
+#
+# Nothing is moved, renamed, or deleted — the ROM tree is mounted read-only.
+#
+#   ./scripts/igir-report.ps1 -Platforms gba,snes,n64,psx   # scoped run (fast)
+#   ./scripts/igir-report.ps1 -All                          # whole library (SLOW: hashes everything)
+#   ./scripts/igir-report.ps1 -Platforms snes -UpdateDats   # refresh the cached DATs first
+#
+# Gotchas baked in (all learned the hard way — see memory igir-roms):
+#   * Uses the Debian `node:lts` image, NOT node:lts-alpine (igir silently
+#     dies on musl).
+#   * DATs come from libretro-database `metadat/no-intro` + `metadat/redump`
+#     (full sets with checksums), NOT the tiny curated top-level `dat/` folder.
+#   * SNES `.smc` copier headers (size%1024==512) are NOT auto-detected by igir
+#     and won't match headerless No-Intro until physically stripped. The `snes`
+#     folder was stripped 2026-06-06; if you add more headered SNES ROMs, strip
+#     them first (see scripts/igir-strip-snes-headers.sh) or they'll show UNUSED.
+
+[CmdletBinding()]
+param(
+    [string[]]$Platforms,
+    [switch]$All,
+    [switch]$UpdateDats,
+    [string]$Hostname = 'valhalla'
+)
+
+$ErrorActionPreference = 'Stop'
+$PSNativeCommandUseErrorActionPreference = $true
+$server = "ginnoir@$Hostname"
+
+if (-not $All -and (-not $Platforms -or $Platforms.Count -eq 0)) {
+    Write-Error "Specify -Platforms <name,name,...> (e.g. -Platforms gba,snes) or -All for the whole library."
+    exit 1
+}
+
+# Build the igir -i input args. -All scans the entire roms tree (heavy);
+# otherwise one -i per named platform folder.
+if ($All) {
+    $inputArgs = '-i /input'
+} else {
+    $inputArgs = ($Platforms | ForEach-Object { "-i /input/$_" }) -join ' '
+}
+$doPull = if ($UpdateDats) { '1' } else { '0' }
+
+# Remote logic runs on valhalla. Single-quoted here-string so PowerShell leaves
+# $vars for bash; INPUT_ARGS / DOPULL are injected below.
+$remote = @'
+set -uo pipefail
+DATS=/storage1/igir/dats/libretro-database
+REPORTS=/storage1/igir/reports
+mkdir -p "$REPORTS" /storage1/igir/dats
+
+# Sparse, blobless clone of just the No-Intro + Redump DAT dirs (cached & reused).
+if [ ! -d "$DATS/.git" ]; then
+  echo ">> Fetching libretro-database DATs (one-time sparse clone)..."
+  docker run --rm -v /storage1/igir:/w -w /w node:lts sh -c '
+    git clone --filter=blob:none --sparse --depth 1 \
+      https://github.com/libretro/libretro-database dats/libretro-database &&
+    cd dats/libretro-database &&
+    git sparse-checkout set metadat/no-intro metadat/redump'
+elif [ "__DOPULL__" = "1" ]; then
+  echo ">> Updating cached DATs..."
+  docker run --rm -v /storage1/igir:/w -w /w/dats/libretro-database node:lts git pull -q
+fi
+
+NI=$(find "$DATS/metadat/no-intro" -name '*.dat' | wc -l)
+RD=$(find "$DATS/metadat/redump" -name '*.dat' | wc -l)
+echo ">> DATs available: $NI No-Intro, $RD Redump"
+
+STAMP=$(date +%Y-%m-%dT%H-%M-%S)
+OUT="igir-report-$STAMP.csv"
+echo ">> Running igir report -> $REPORTS/$OUT"
+docker run --rm \
+  -v /storage1/Emulation/roms:/input:ro \
+  -v "$DATS":/dats:ro \
+  -v "$REPORTS":/output \
+  node:lts npx -y igir@latest report \
+    -d /dats/metadat/no-intro -d /dats/metadat/redump \
+    __INPUT_ARGS__ \
+    --report-output "/output/$OUT" 2>&1 | grep -vE 'npm notice|npm warn' || true
+echo ">> Done. CSV: /storage1/igir/reports/$OUT"
+'@
+
+$remote = $remote.Replace('__INPUT_ARGS__', $inputArgs).Replace('__DOPULL__', $doPull)
+# Strip CR so the remote bash never sees stray \r (this file may be CRLF on disk).
+$remote = $remote.Replace("`r", '')
+
+Write-Host "igir report on $server :: $(if ($All) {'ALL platforms'} else {$Platforms -join ', '})"
+ssh $server $remote
diff --git a/scripts/igir-strip-snes-headers.sh b/scripts/igir-strip-snes-headers.sh
new file mode 100644
index 0000000..065c616
--- /dev/null
+++ b/scripts/igir-strip-snes-headers.sh
@@ -0,0 +1,79 @@
+#!/usr/bin/env bash
+# scripts/igir-strip-snes-headers.sh   (runs ON valhalla)
+#
+# SNES copier ROMs carry a 512-byte header (file size % 1024 == 512). igir
+# detects SNES headers by content *signature*, which these copier headers lack,
+# so it can't strip them and they never match headerless No-Intro DATs — even
+# though their headerless checksum IS in No-Intro. This script blind-strips that
+# 512-byte header (the universally-correct fix for SNES) and renames to .sfc.
+#
+# It is a MUTATION of the live EmuDeck tree (RomM + EmuDeck read it). Every
+# touched file is tar'd to a backup first, so the change is fully reversible.
+#
+# Usage (default folder = snes):
+#   ssh ginnoir@valhalla 'bash -s'            < scripts/igir-strip-snes-headers.sh
+#   ssh ginnoir@valhalla 'bash -s -- sfc'     < scripts/igir-strip-snes-headers.sh
+#   ssh ginnoir@valhalla 'bash -s -- snes 1'  < scripts/igir-strip-snes-headers.sh   # 2nd arg=1 => dry run
+#
+# Restore from a backup:
+#   tar xzf /storage1/igir/backup/<folder>-headered-<stamp>.tar.gz \
+#       -C /storage1/Emulation/roms/<folder>
+set -uo pipefail
+
+FOLDER="${1:-snes}"
+DRYRUN="${2:-0}"
+ROOT="/storage1/Emulation/roms/$FOLDER"
+BK="/storage1/igir/backup"
+STAMP="$(date +%Y-%m-%d)"
+
+[ -d "$ROOT" ] || { echo "No such folder: $ROOT"; exit 1; }
+mkdir -p "$BK"
+cd "$ROOT" || exit 1
+shopt -s nullglob nocaseglob
+
+# Collect headered SNES ROMs (size % 1024 == 512).
+list="$(mktemp)"; : > "$list"
+for f in *.smc *.sfc *.fig *.swc; do
+  [ -f "$f" ] || continue
+  s=$(stat -c %s "$f")
+  [ $((s % 1024)) -eq 512 ] && printf '%s\0' "$f" >> "$list"
+done
+n=$(grep -zc . "$list" || true)
+echo "Headered files in '$FOLDER': $n"
+if [ "$n" -eq 0 ]; then echo "Nothing to strip."; rm -f "$list"; exit 0; fi
+
+if [ "$DRYRUN" = "1" ]; then
+  echo "(dry run) would back up to $BK/$FOLDER-headered-$STAMP.tar.gz and strip $n files."
+  rm -f "$list"; exit 0
+fi
+
+# Back up originals before mutating.
+bkfile="$BK/$FOLDER-headered-$STAMP.tar.gz"
+tar --null -czf "$bkfile" -T "$list"
+echo "Backup: $bkfile ($(stat -c %s "$bkfile") bytes, $(tar tzf "$bkfile" | wc -l) files)"
+
+# Strip: drop first 512 bytes, verify new size, write as .sfc, remove old.
+stripped=0; errors=0
+while IFS= read -r -d '' f; do
+  s=$(stat -c %s "$f")
+  base="${f%.*}"; target="$base.sfc"; tmp="$f.hl.tmp"
+  tail -c +513 "$f" > "$tmp"
+  ns=$(stat -c %s "$tmp")
+  if [ "$ns" -ne $((s - 512)) ]; then
+    echo "SIZE MISMATCH, skipped: $f ($s -> $ns)"; rm -f "$tmp"; errors=$((errors+1)); continue
+  fi
+  if [ "$target" != "$f" ] && [ -e "$target" ]; then target="$base (headerless).sfc"; fi
+  mv -f "$tmp" "$target"
+  [ "$target" != "$f" ] && rm -f "$f"
+  stripped=$((stripped+1))
+done < "$list"
+rm -f "$list"
+
+# Verify none remain.
+left=0
+for f in *.smc *.sfc *.fig *.swc; do
+  [ -f "$f" ] || continue
+  s=$(stat -c %s "$f")
+  [ $((s % 1024)) -eq 512 ] && left=$((left+1))
+done
+echo "RESULT stripped=$stripped errors=$errors remaining_headered=$left"