Read the byte count rsync actually prints, not the word "bytes"

--stats prints "Total transferred file size: 1,234,567 bytes", so $NF is the
unit word; stripping non-digits from it left an empty string and ""+0 is 0.
Every transfer ever logged recorded zero. Nothing looked broken — the history
filled with 1,423 correct rows all reading 0, the graph drew a flat line, and
DIGEST_SMART_ON_BANDWIDTH could never fire because 0 is never above 50GB.
Both parse sites now share one program, since fixing either alone would have
left the other silently wrong.

Rsync/rsync.sh

@@ -449,6 +449,28 @@ done
 # Add --stats to capture bytes transferred for bandwidth logging
 RSYNC_OPTS+=(--stats)
 
+# How the byte count is read back out of --stats. Both parse sites share this, because they had
+# the same bug and fixing one would have left the other silently wrong.
+#
+# rsync prints:   Total transferred file size: 1,234,567 bytes
+# so $NF is the word "bytes". The previous version stripped non-digits from $NF, which left an
+# empty string, and "" + 0 is 0 — every transfer ever logged recorded 0 bytes. Nothing failed:
+# bandwidth_history.db filled up correctly with 1,423 rows all reading zero, the graph plotted a
+# flat line, and DIGEST_SMART_ON_BANDWIDTH could never fire because 0 is never above
+# BANDWIDTH_WARN_GB. A whole feature that ran on schedule and measured nothing.
+#
+# Walks back from the end and takes the first field that is entirely digits once commas are
+# removed, rather than trusting a fixed position: the units word is not guaranteed to be present
+# on every rsync build, and $(NF-1) would then be as wrong as $NF is now.
+VV_RSYNC_BYTES_AWK='
+/Total transferred file size:/ {
+    for (i = NF; i > 0; i--) {
+        v = $i; gsub(/,/, "", v)
+        if (v ~ /^[0-9]+$/) { print v + 0; exit }
+    }
+    print 0; exit
+}'
+
 [[ "$DRY_RUN" == true ]] && RSYNC_OPTS+=("--dry-run")
 
 # ── Merge pass 1: pull remote-unique content to local (--ignore-existing) ────────────────────
@@ -463,7 +485,7 @@ if [[ "$MERGE_RUN" == true ]]; then
         "root@${REMOTE_SERVER}:${DIRECTORY}/" "${DIRECTORY}/" 2>&1)
     _pull_exit=$?
     _pull_bytes=$(echo "$_pull_output" | \
-        awk '/Total transferred file size:/{gsub(/,/,"",$NF); gsub(/[^0-9]/,"",$NF); print $NF+0}')
+        awk "$VV_RSYNC_BYTES_AWK")
     _pull_complete=false
     if [[ "$_pull_exit" -eq 0 ]]; then
         echo "$ICON_DONE Merge pass 1 complete — ${_pull_bytes:-0} bytes pulled"
@@ -518,7 +540,7 @@ for (( ATTEMPT=1; ATTEMPT<=RETRY_COUNT; ATTEMPT++ )); do
     if [[ "$RSYNC_EXIT" -eq 0 ]]; then
         # Parse bytes transferred from --stats output
         BYTES_TRANSFERRED=$(echo "$RSYNC_OUTPUT" | \
-            awk '/Total transferred file size:/{gsub(/,/,"",$NF); gsub(/[^0-9]/,"",$NF); print $NF+0}')
+            awk "$VV_RSYNC_BYTES_AWK")
         BYTES_TRANSFERRED="${BYTES_TRANSFERRED:-0}"
 
         echo "$ICON_DONE Rsync complete — $BYTES_TRANSFERRED bytes transferred"