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/shared/delete_plan.c

@@ -791,9 +791,9 @@ static bool apply_missing(DeletePlanSession* session, const Config* config) {
   size_t deleted = 0;
   size_t skipped = 0;
   bool limit = false;
-  bool ok = manifest_delete_missing_args_limited_observed(
-      config, &manifest, remaining, &deleted, &skipped, &limit, session->observer,
-      session->observer_context);
+  bool ok = manifest_delete_missing_args_limited_observed(config, &manifest, remaining, &deleted,
+                                                          &skipped, &limit, session->observer,
+                                                          session->observer_context);
   session->deleted += deleted;
   session->planned += deleted;
   session->skipped += skipped;
@@ -893,8 +893,8 @@ static bool apply_deferred_path(DeletePlanSession* session, const Config* config
   return ok;
 }
 
-void delete_plan_session_set_delete_observer(DeletePlanSession* session, DeletePathObserver observer,
-                                             void* context) {
+void delete_plan_session_set_delete_observer(DeletePlanSession* session,
+                                             DeletePathObserver observer, void* context) {
   if (!session)
     return;
   session->observer = observer;