fix(identity): rsync ownership parity for numeric-ids, dirs, maps, fake-super (#286, #294)

- #286: --numeric-ids is a mapping modifier only; it no longer activates
  chown by itself (identity_active_enabled/owner/group predicates), and
  --fake-super stores the resolved mapping instead of real-chowning.
- #286: apply owner/group to directories via the deferred directory
  metadata path; capture+transmit+apply directory xattrs/ACLs (-aX/-aA),
  including default ACLs, in STATUS_MKDIR/STATUS_DIR_TIMES.
- #294: --usermap/--groupmap support inclusive ranges, '*', empty FROM
  (unnamed ids), and receiver-side TO name resolution; --chown mixing with
  a same-side map is rejected like rsync.
- Protocol 2.22.0 -> 2.23.0 (map wire entry gains from_hi + to_name;
  dir frames gain a bounded xattr block).

tests/test_fuzz_smoke.c

@@ -379,7 +379,9 @@ static void test_fuzz_config_receive_huge_map_count() {
   }
   c->usermap_count = 1;
   c->usermap[0].from = sentinel_from;
+  c->usermap[0].from_hi = sentinel_from;
   c->usermap[0].to = sentinel_to;
+  c->usermap[0].to_name = NULL;
 
   unsigned char* frame = NULL;
   size_t len = 0;
@@ -390,9 +392,12 @@ static void test_fuzz_config_receive_huge_map_count() {
     return;
   }
 
-  unsigned char pattern[8];
+  /* One wire entry is [from][from_hi][to][to_name]; search the fixed-width
+     prefix (the to_name length-prefixed string follows). */
+  unsigned char pattern[12];
   memcpy(pattern, &sentinel_from, sizeof(sentinel_from));
-  memcpy(pattern + sizeof(sentinel_from), &sentinel_to, sizeof(sentinel_to));
+  memcpy(pattern + sizeof(sentinel_from), &sentinel_from, sizeof(sentinel_from));
+  memcpy(pattern + 2 * sizeof(sentinel_from), &sentinel_to, sizeof(sentinel_to));
   size_t entry_off = find_bytes(frame, len, pattern, sizeof(pattern));
   if (entry_off == SIZE_MAX || entry_off < sizeof(int32_t)) {
     free(frame);