Identity: other quoted text, text separators, ids in image names, more

- Quoted text other than the file name stays in the remainder: ">>> CREATIVE
  COMMONS NZB <<< "0190 alarm 5.0 " - File 1 of 9: "…rar"" made 12,605
  files of all uploads one release.
- namesRelease accepts words joined by , & : ; \ / + ("Posting & deleting,
  read 0 file "E:\VladModels\y038_Irina\185" …"): such image sets fell to
  the stem rule ("P8250001.JPG"), one release over all folders.
- imageSet: a 5+ digit number left in the set is a per-image id
  ("sss-70556-3474182-23-10825418-pc", "Alena p 26663_…"): no set. Copy
  markers may repeat ("diana-050-052[1][1]").
- unquotedName: an image after numbered text without a separator is the
  last word ("<abm> … AB: part2 0573-1002 043.jpg").

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/unit/headers/subject.spec.ts

@@ -65,6 +65,7 @@ test.group('subject / parseSubject', () => {
       ["pal!    [Mivina high(1).wmv\" yEnc] (323/349)", 'Mivina high(1).wmv', 323, 349],
       ['[03/21 Geroellheimer - S03E16.part01.rar" yEnc (1/50)', 'Geroellheimer - S03E16.part01.rar', 1, 50],
       ['<Group> FP -> {EXL01~P~004} -> Alexia (3) -> VF -> [0001 of 0076] -> Exclusive-tgirls_000000-lg.jpg (1/1)', 'Exclusive-tgirls_000000-lg.jpg', 1, 1],
+      ["<abm> <Duke> here's a little thanksgiving present: AB: part2 0573-1002 043.jpg (1/1)", '043.jpg', 1, 1],
     ]
     for (const [subject, name, segment, total, fileIndex] of cases) {
       const parsed = parseSubject(subject)