fix(parity): dry-run delete protections, delete-delay actual-removal budget, --info name2

- -n/--delete sends the same protected/size-skipped/scope as a real run, so
  the read-only would-delete walk no longer over-reports (row -> caveat)
- --delete-delay charges --max-delete on actual removals and recursively
  re-scans a refilled deferred directory at commit; independent deferred cap
- --info=name emits the leading ./ root line and name2 'is uptodate' lines
- differential tests promoted from residual pins to rsync parity assertions

src/shared/log.h

@@ -33,6 +33,11 @@ typedef enum {
   LOG_INFO_FLIST = 1u << 7,
   LOG_INFO_NONREG = 1u << 8,
   LOG_INFO_PROGRESS = 1u << 9,
+  /* Marker for `--info=name2` and higher: also print rsync's
+     "NAME is uptodate" line for entries the receiver already has.  It rides in
+     the info_level bitset (there is no separate Config field) and is never set
+     by --info=all (which selects level 1). */
+  LOG_INFO_NAME_UPTODATE = 1u << 10,
   LOG_INFO_ALL = LOG_INFO_COPY | LOG_INFO_MISC | LOG_INFO_SKIP | LOG_INFO_STATS | LOG_INFO_DEL |
                  LOG_INFO_REMOVE | LOG_INFO_NAME | LOG_INFO_FLIST | LOG_INFO_NONREG |
                  LOG_INFO_PROGRESS,