Add regex patterns for split-archive coverage gaps

Upstream blacklist enumerates rar volume extensions only up to .r04,
.s09, .z04, with the .003 split missing entirely and no coverage for
the .partNN.rar multi-part naming convention. Releases with files like
.r05 and beyond slip through the file-level filter, and Malware
Blocker's queue-level cleanup is too slow to prevent qBittorrent from
downloading enough data to incur HnR penalties.

Add five regex patterns to the blacklist as manual local additions
preserved by the three-way merge:

  regex:^.*\.\d{3}$           - all 3-digit numeric splits (.000-.999)
  regex:^.*\.part\d+\.rar$    - multi-part rar new style
  regex:^.*\.r\d+$            - all rar volume numbers (old style)
  regex:^.*\.s\d+$            - rar volumes after r99
  regex:^.*\.z\d+$            - zip splits

These patterns are added directly to blacklist via the manual addition
escape hatch documented in README and Lists.md. The Whitelist stripped
log line will continue to function normally; new lines appear under
Custom preserved.

blacklist

@@ -844,3 +844,8 @@
 Trailer.*
 VOSTFR
 api
+regex:^.*\.\d{3}$
+regex:^.*\.part\d+\.rar$
+regex:^.*\.r\d+$
+regex:^.*\.s\d+$
+regex:^.*\.z\d+$