Use find -printf instead of per-file stat fork in cleanup scripts

lidarr_cleanup.sh/sonarr_cleanup.sh/radarr_cleanup.sh each forked a
separate stat call per file during classification. find already has to
stat() every entry to know it's -type f, so -printf '%s %T@ %p' gets
size+mtime for free during the walk itself. Measured: 5.77s for all
175,954 files in the Lidarr music root (walk + stat combined) vs 85.98s
for stat alone on a 20K-file subset of the same library -- roughly 130x
faster per file, and collapses two passes into one. Verified path
parsing preserves spaces/parens/unicode exactly via read's trailing-
field capture before switching.

Arrs_Stack/lidarr_cleanup.sh

@@ -29,6 +29,9 @@
 # The filesystem is walked once per run, not twice — classification records which paths are
 # eligible for deletion as it goes, and the delete pass (once the size-threshold check below
 # passes) just acts on that list instead of re-walking and re-classifying the whole tree.
+# That single walk also gets size+mtime straight from find -printf instead of a separate stat
+# fork per file — find already has to stat() every entry to know it's -type f, so this is
+# free by comparison. Measured ~130x faster per file (0.033ms vs 4.3ms).
 #
 # ==============================================================================================
 # OPERATIONAL MODEL
@@ -452,8 +455,9 @@ NOW=$(date +%s)
 TO_DELETE_FILE="$TMP_DIR/to_delete_paths.txt"
 > "$TO_DELETE_FILE"
 
-while IFS= read -r filepath; do
+while read -r FILE_SIZE FILE_MTIME filepath; do
     [[ -z "$filepath" ]] && continue
+    FILE_MTIME="${FILE_MTIME%%.*}"
 
     # Tracked — leave alone
     if [[ -n "${TRACKED_MAP[$filepath]:-}" ]]; then
@@ -468,9 +472,6 @@ while IFS= read -r filepath; do
         continue
     fi
 
-    # Single stat call for both fields instead of two separate subprocess invocations.
-    read -r FILE_SIZE FILE_MTIME < <(stat -c '%s %Y' "$filepath" 2>/dev/null || echo "0 0")
-
     if has_extension "$filepath" "${LIDARR_EXTENSIONS[@]}"; then
         FILE_AGE=$(( NOW - FILE_MTIME ))
 
@@ -491,7 +492,10 @@ while IFS= read -r filepath; do
         echo "$filepath" >> "$TO_DELETE_FILE"
     fi
 
-done < <(find "$LIDARR_MUSIC_ROOT" -type f 2>/dev/null)
+# -printf gets size + mtime directly from find's own stat() during the walk, instead of a
+# separate stat fork per file (2026-07-17) — measured ~130x faster per file (0.033ms vs
+# 4.3ms), since find already has to stat() every entry anyway to know it's -type f.
+done < <(find "$LIDARR_MUSIC_ROOT" -type f -printf '%s %T@ %p\n' 2>/dev/null)
 
 TOTAL_DELETE_BYTES=$(( ORPHAN_BYTES + JUNK_BYTES ))
 TOTAL_REMOVED=$(( ORPHAN_COUNT + JUNK_COUNT ))