More per-file suffixes: old rar volumes, .rev, a part's par2, .bc; a size after an unquoted name

Each file of these uploads was a release of its own:
- "BD_NoTHing018.s41", "…CyjI.s00": rar volumes after .r99 (as the file's
  own lower-case extension only, so "show.s01.rar" keeps its season);
- "chappelle1.part02.rev": rar recovery volumes;
- "X.part1.par2", "X.part1.vol00+34.par2" beside "X.part1.rar";
- "NZPEC….180.bc": BCArchive volumes;
- "[27/70] - 2407.jpg - 28": the size in kB after an unquoted name.

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

lib/release/identity.ts

@@ -25,11 +25,16 @@ export interface ReleaseInput {
 // Suffixes that differ between the files of one release. Stripped repeatedly,
 // so "x.mkv.vol03+04.par2" and "x.part07.rar" both reduce to "x".
 const SUFFIXES = [
+  // A part's par2 files ("X.part1.par2", "X.part1.vol00+34.par2" beside "X.part1.rar": 683 single files in a.b.test).
+  /\.part\d+(?:\.vol\d+[+-]\d+)?\.par2$/i,
   /\.vol\d+[+-]\d+\.par2$/i,
   /\.par2$/i,
-  /\.part\d+\.rar$/i,
+  // Recovery volumes too ("chappelle1.part02.rev").
+  /\.part\d+\.(?:rar|rev)$/i,
   /\.r\d{2,3}$/i,
-  /\.rar$/i,
+  /\.(?:rar|rev)$/i,
+  // BCArchive volumes ("NZPECQUztWOponTpCratvvTPDBXBjvHIULOUPvSH.180.bc").
+  /(?:\.\d{1,4})?\.bc$/i,
   /\.7z(\.\d{3})?$/i,
   /\.zip(\.\d{3})?$/i,
   // Split volumes (x.mkv.001), not codec names (H.264, H.265).
@@ -43,7 +48,9 @@ const SUFFIXES = [
 
 /** Strips per-file suffixes (volume numbers, archive and par2 extensions) from a filename. */
 export function fileStem(name: string): string {
-  let stem = name.trim()
+  // Old-style rar volumes after .r99 ("BD_NoTHing018.s41", "….s00"): only as the file's own extension, in lower case, so
+  // a season ("show.s01.rar", "Show.S01") stays.
+  let stem = name.trim().replace(/\.[s-z]\d{2}$/, '')
   let changed = true
   while (changed) {
     changed = false
@@ -281,6 +288,15 @@ export function randomPoster(from: string): boolean {
   return looksRandom((at === -1 ? address : address.slice(0, at)).replace(/[-_.]/g, ''))
 }
 
+/** The subject without a number after the file's unquoted name at its end (" - 28": a size in kB). */
+export function sizeAfterName(subject: string, name: string): string {
+  const end = subject.trimEnd()
+  const digits = end.length - end.replace(/\d+$/, '').length
+  if (digits === 0) return subject
+  const before = end.slice(0, end.length - digits).replace(/\s*-\s*$/, '')
+  return before.length < end.length - digits && name.length > 0 && before.endsWith(name) && !before.endsWith(`"${name}"`) ? before : subject
+}
+
 export function releaseIdentity(input: ReleaseInput): ReleaseIdentity | null {
   const poster = randomPoster(input.poster) ? '' : input.poster
   const counter = /\[(\d+)\/(\d+)\]/.exec(input.subject)
@@ -300,14 +316,16 @@ export function releaseIdentity(input: ReleaseInput): ReleaseIdentity | null {
   // as the quotes would have been: otherwise every file of a set would name a release of its own.
   // The subject here has its spaces collapsed; the name may not ("lara_bath  15of19 larabath_2.5.jpg").
   const collapsed = input.name.replace(/\s+/g, ' ').trim()
+  // A size after a name that isn't quoted, at the end ("[27/70] - 2407.jpg - 28": each image a release of its own).
+  const subject = sizeAfterName(input.subject, input.name)
   // Other quoted text stays: it names the release (">>> CREATIVE COMMONS NZB <<< "0190 alarm 5.0 " - File 1 of 9:
   // "creative_commons_nzb_0190_alarm_5.0_.rar"": 12,605 files of 1,400 uploads were one release; LOG.md 2026-10-12 (9)).
   const named = (
-    input.subject.includes(`"${input.name}"`)
-      ? input.subject.replace(`"${input.name}"`, ' ')
-      : input.subject.includes(input.name)
-        ? input.subject.replace(input.name, ' ')
-        : input.subject.replace(collapsed, ' ')
+    subject.includes(`"${input.name}"`)
+      ? subject.replace(`"${input.name}"`, ' ')
+      : subject.includes(input.name)
+        ? subject.replace(input.name, ' ')
+        : subject.replace(collapsed, ' ')
   )
     // The name repeated elsewhere ("(NELET11.par2) [01/58] - "NELET11.par2"": each file a release of its own).
     .split(input.name.length >= 5 ? input.name : '\0')