Identity: a set's number before yEnc is no size; names after an arrow

- The unit-less size before the closing yEnc ('"x.mp3" - 8123 yEnc') took
  the set number in 'Newstar Destiny I set 1 [1 of 60] "destiny-001-001.jpg"
  yEnc' once the quotes were gone: 97 sets of 60 were one release. A number
  of fewer than 4 digits after a word stays.
- unquotedName also cuts after "-> " ("… -> [0001 of 0076] ->
  Exclusive-tgirls_000000-lg.jpg"): the arrow was part of the file name.

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

tests/unit/headers/subject.spec.ts

@@ -64,6 +64,7 @@ test.group('subject / parseSubject', () => {
       ['A Strange Light from the East - Eastern Influenced Western Music (1965-72) - CD2 - 07 - Rascals - Sattva.mp3 (1/43)', '07 - Rascals - Sattva.mp3', 1, 43],
       ["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],
     ]
     for (const [subject, name, segment, total, fileIndex] of cases) {
       const parsed = parseSubject(subject)