Subject names lose the brackets the counters left unmatched

A poster's counter without its "[" ("… Facialized 002/477] - 0177.jpg")
left "… Facialized ]" as the release name (11286967). displayName (TS) and
display_name (Rust) drop unmatched brackets from subject and post names
only; the identity key keeps the remainder as it was, so no release splits.

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

tests/unit/release/identity.spec.ts

@@ -1,5 +1,5 @@
 import { test } from '@japa/runner'
-import { fileStem, releaseIdentity, runOn, sizeAfterName, subjectRemainder } from '#lib/release/index'
+import { displayName, fileStem, releaseIdentity, runOn, sizeAfterName, subjectRemainder } from '#lib/release/index'
 import { looksLikeFilename, weakFileKey } from '#lib/headers/index'
 
 test.group('release / fileStem', () => {
@@ -604,3 +604,15 @@ test.group('release / par2 names', () => {
     assert.equal(id('[2/6] - "x.jpg" yEnc', 'x.jpg').key, id('[1/6] - "x.part01.rar" yEnc', 'x.part01.rar').key)
   })
 })
+
+test.group('release / displayName', () => {
+  test('brackets the counters left unmatched leave the name, the key keeps them', ({ assert }) => {
+    const subject = (i: number) => `Babe with Plump Bubble Butt Fucked and Facialized ${String(i).padStart(3, '0')}/477] - 0${176 + i}.jpg`
+    const id = (i: number) => releaseIdentity({ poster: 'webmaster@hdbangvidz.com (Porn4You)', weak: false, subject: subject(i), name: `0${176 + i}.jpg` })!
+    assert.equal(id(2).name, 'Babe with Plump Bubble Butt Fucked and Facialized')
+    assert.equal(id(2).key, id(3).key)
+    assert.equal(displayName('[Group] Show (2020)'), '[Group] Show (2020)')
+    assert.equal(displayName('( Show [x] name'), 'Show [x] name')
+    assert.equal(displayName(']'), ']')
+  })
+})