parity: --info=mount/stats, --stats dir breakdown, --debug categories

--info=mount now prints rsync's mount-point skip line (matching rsync
3.4.1, which emits it for repeated -xx and drops the mount-point dir);
--info=stats enables the same block as --stats; -x is repeatable.
--stats counts traversed directories for the Number of files breakdown
even when no directory metadata is captured (-r without -t/-p).
--debug enables real output for flist/del/hash/deltasum/recv/filter/send
at their natural FastSync events (synthetic categories stay inert).

--stats and --debug rows keep their documented residual status.

tests/integration/test_output_parity.py

@@ -662,6 +662,46 @@ class TestWireStatsParity:
         assert re.match(r"Number of created files: 1 \(reg: 1\)$", r_created), r_created
         assert f_created == r_created, (r_created, f_created)
 
+    @requires_rsync
+    @pytest.mark.ci
+    @pytest.mark.parametrize("mt", [False, True])
+    def test_stats_r_directory_breakdown_matches_rsync(self, shared_server, mt):
+        """A recursive `-r` scan (no -t/-p) exposes no directory metadata, but
+        rsync still counts every directory in `Number of files`; the sender's
+        lightweight directory counter must reproduce the `dir: N` category."""
+        source = os.path.join(TEST_DATA_DIR, "wire_stdir_src")
+        dest = os.path.join(TEST_DATA_DIR, "wire_stdir_dst")
+        rdst = os.path.join(TEST_DATA_DIR, "wire_stdir_rdst")
+        clean_dir(source)
+        clean_dir(dest)
+        clean_dir(rdst)
+        os.makedirs(os.path.join(source, "sub", "deep"))
+        os.makedirs(os.path.join(source, "empty"))
+        for rel in ("a.txt", os.path.join("sub", "b.txt"), os.path.join("sub", "deep", "c.txt")):
+            with open(os.path.join(source, rel), "wb") as fh:
+                fh.write(b"x\n")
+        os.makedirs(get_dest_received_dir(dest, source), exist_ok=True)
+
+        rsync_result = _rsync(["-r", "--stats", source + "/", rdst + "/"])
+        assert rsync_result.returncode == 0, rsync_result.stderr
+        flags = ["-r", "--stats"] + (["--threads"] if mt else [])
+        result, _ = run_client(source, dest, flags=flags, port=shared_server.port)
+        assert result.returncode == 0, result.stderr[:300]
+
+        def stats_line(text, key):
+            for line in text.splitlines():
+                if line.startswith(key + ":"):
+                    return line
+            return None
+
+        r_files = stats_line(rsync_result.stdout, "Number of files")
+        f_files = stats_line(result.stdout, "Number of files")
+        # 3 regular files, 4 directories (root, sub, sub/deep, empty).
+        assert re.match(r"Number of files: 7 \(reg: 3, dir: 4\)$", r_files), r_files
+        assert f_files == r_files, (r_files, f_files)
+        assert (stats_line(result.stdout, "Number of regular files transferred") ==
+                stats_line(rsync_result.stdout, "Number of regular files transferred"))
+
     @requires_rsync
     @pytest.mark.ci
     @pytest.mark.parametrize("mt", [False, True])