Use find -printf instead of per-file stat/basename in transcode_cleanup.sh

Same fix as the arr cleanup scripts today: find -printf gets file size
directly from find's own stat() during the walk (mtime already handled
by -mmin), and the dry-run log line's basename call is replaced with
parameter expansion. Header notes this can matter under real load --
"thousands of HLS segment files" per the existing lsof design principle
this mirrors, even though the ramdisk is empty right now (no active
transcode session to benchmark against directly).

Transcodes/transcode_cleanup.sh

@@ -24,6 +24,14 @@
 #   lsof is called once per location to build a complete open-file map. All subsequent
 #   checks are O(1) lookups against that map — thousands of files, one lsof call.
 #
+# find -printf Instead of Per-File stat/basename (2026-07-17)
+#   Same fork-elimination principle as above, applied to the file-processing loop. find
+#   already has to stat() every entry to know it's -type f, so -printf '%s %p' gets the
+#   size for free during the walk instead of a separate stat fork per file. basename was
+#   also forking per file in the dry-run log line -- replaced with parameter expansion
+#   (${file##*/}). Same class of bug found and measured (~28-185x per call) in the arr
+#   cleanup scripts' classification loops the same day.
+#
 # No Session-Aware Cleanup
 #   ffmpeg generates folder names independently of the media server API session IDs.
 #   There is no reliable correlation between API session IDs and transcoding-temp
@@ -200,8 +208,11 @@ cleanup_location() {
         log "$files_streaming files currently open in $label"
     fi
 
-    # Process aged files
-    while IFS= read -r file; do
+    # Process aged files. -printf gets size directly from find's own stat() during the walk
+    # instead of a separate stat fork per file (2026-07-17, same fix as the arr cleanup
+    # scripts) — mtime isn't needed here since -mmin above already did the age filtering.
+    local file_size file
+    while read -r file_size file; do
         [[ -z "$file" ]] && continue
 
         # O(1) open file check — in-memory map
@@ -211,11 +222,8 @@ cleanup_location() {
             continue
         fi
 
-        local file_size
-        file_size=$(stat -c%s "$file" 2>/dev/null || echo 0)
-
         if [[ "$DRY_RUN" == true ]]; then
-            log "DRY RUN — would delete: $(basename "$file")"
+            log "DRY RUN — would delete: ${file##*/}"
             (( files_skipped++ ))
         else
             if rm -f "$file" 2>/dev/null; then
@@ -228,7 +236,7 @@ cleanup_location() {
             fi
         fi
 
-    done < <(find "$location" -type f -mmin +"$max_age" 2>/dev/null)
+    done < <(find "$location" -type f -mmin +"$max_age" -printf '%s %p\n' 2>/dev/null)
 
     # Remove empty directories older than TRANSCODE_ORPHAN_AGE — but NEVER remove
     # transcoding-temp. Age gate avoids deleting a session folder ffmpeg just