test(parity): option-wave rsync differentials + docs (109/21/26)

- tests/integration/test_option_parity.py: bwlimit parse matrix + throttle
  rate, --info flist/name/nonreg/del(dry+real+itemize)/remove, real-setpriv
  --ignore-errors, rsync-daemon -M forwarding evidence, filter protect/risk
  destination-only divergence pin.
- RSYNC_COMPAT.md: tally 109/21/26; --bwlimit and --ignore-errors -> Parity,
  --filter and -M -> Divergent with differential rationale, --info residual
  narrowed to the categories with no client-observable event.
- HANDOFF/README: protocol 2.27.0, option-wave summary.

src/client/client_send.c

@@ -347,8 +347,8 @@ static void print_delete_reports(const Config* config, const ArrayList* paths) {
 }
 
 static void client_progress_begin(const Config* config) {
-  g_progress_active = (config->show_progress || info_flag_enabled(config, LOG_INFO_PROGRESS)) &&
-                      !config->quiet;
+  g_progress_active =
+      (config->show_progress || info_flag_enabled(config, LOG_INFO_PROGRESS)) && !config->quiet;
   g_progress_xferred = 0;
   g_progress_seen = 0;
   if (!g_progress_active) {
@@ -3307,7 +3307,8 @@ int send_files(Config* config) {
     /* rsync default: a scan I/O error suppresses deletion unless
        --ignore-errors, even in the late (commit) modes.  Drop the keep-set so
        the receiver removes nothing; the readable tree still transferred. */
-    bool late_delete = (manifest || config->delete_missing_args) && !delete_early && !delete_per_dir;
+    bool late_delete =
+        (manifest || config->delete_missing_args) && !delete_early && !delete_per_dir;
     if (late_delete && !ignore_errors_allows_delete(config, had_scan_io)) {
       log_message(LOG_LEVEL_WARNING, "IO error encountered -- skipping file deletion");
       if (manifest) {