Add --filter to arr_corruption_scan.sh for targeted testing

Full-library scans are slow to reach any one show by chance — this lets a test
target a specific known-corrupt file/show without waiting on scan order.

Arrs_Stack/arr_corruption_scan.sh

@@ -79,6 +79,9 @@
 #                                              useful for a bounded first test)
 #   arr_corruption_scan.sh --log            — verbose (prints every clean file too)
 #   arr_corruption_scan.sh --status         — show config and exit
+#   arr_corruption_scan.sh --filter=Becker  — only consider paths containing this substring
+#                                              (testing/targeting a specific show; state
+#                                              file and everything else behaves normally)
 #
 # ==============================================================================================
 
@@ -90,10 +93,12 @@ source "$SCRIPT_DIR/../load_config.sh"
 # before they get filtered.
 REMEDIATE=false
 SCAN_LIMIT=0
+PATH_FILTER=""
 for _arg in "$@"; do
     case "$_arg" in
         --remediate) REMEDIATE=true ;;
         --limit=*)   SCAN_LIMIT="${_arg#*=}" ;;
+        --filter=*)  PATH_FILTER="${_arg#*=}" ;;
     esac
 done
 unset _arg
@@ -171,6 +176,7 @@ if [[ "$SHOW_STATUS" == true ]]; then
     echo "$ICON_GEAR    State file:        $CORRUPTION_SCAN_STATE_FILE"
     echo "$ICON_GEAR    Remediate:         $REMEDIATE"
     echo "$ICON_GEAR    Scan limit:        ${SCAN_LIMIT:-unlimited}"
+    echo "$ICON_GEAR    Path filter:       ${PATH_FILTER:-none}"
     echo "━━━━━━━━━━━━━━━━━━━━━━━"
     exit 0
 fi
@@ -287,6 +293,7 @@ while IFS= read -r item; do
 
     host_path=$(translate_path "$api_path")
     [[ -f "$host_path" ]] || continue
+    [[ -n "$PATH_FILTER" && "$host_path" != *"$PATH_FILTER"* ]] && continue
 
     stamp="$(stat -c '%Y:%s' "$host_path" 2>/dev/null)"
     [[ -z "$stamp" ]] && continue