Allow a trailing fansub revision tag in SxxExx parsing

"S01E01v2" (a fixed re-release of an episode) glued the version marker
directly onto the episode number with no separator, so the word-boundary
check after the digits never matched and the whole file fell through as
unparsed. Verified live: some shows had zero episode files linked because
every release happened to be a v2.

breadarrd/src/parser/mod.rs

@@ -131,6 +131,16 @@ mod tests {
         assert_eq!(p.title_normalized, "Ascendance of a Bookworm");
     }
 
+    #[test]
+    fn parses_sxxexx_with_a_trailing_fansub_revision_tag() {
+        // "v2" glued directly onto the episode number ("a fixed re-release
+        // of this episode") previously broke the word-boundary check
+        // entirely, leaving season/episode both None.
+        let p = parse("[Judas] Chainsaw Man - S01E01v2 1080p WEB-DL");
+        assert_eq!(p.season, Some(1));
+        assert_eq!(p.episode, Some(1));
+    }
+
     #[test]
     fn parses_subsplease_dash_episode_with_group_and_hash() {
         let p = parse("[SubsPlease] Honzuki no Gekokujou S4 - 13 (1080p) [A4FE0990].mkv");

breadarrd/src/parser/tokens.rs

@@ -38,8 +38,16 @@ static YEAR_RE: LazyLock<Regex> = LazyLock::new(|| Regex::new(r"[(\[](19|20)\d{2
 static BARE_YEAR_RE: LazyLock<Regex> =
     LazyLock::new(|| Regex::new(r"\b((?:19|20)\d{2})\b").unwrap());
 
+// The trailing `v\d+` is a fansub revision tag ("v2" = "second release of
+// this episode, fixed encode/subs") stuck directly onto the episode number
+// with no separator — "S01E01v2". Without consuming it before the `\b`,
+// the boundary check fails outright (digit→letter isn't a word boundary),
+// so the whole pattern silently doesn't match and the file falls through
+// to unparsed (verified live: every v2 release of several shows, e.g. an
+// entire show that only had v2 releases, ended up with zero linked
+// episode files during a library scan).
 static SXXEXX_RE: LazyLock<Regex> =
-    LazyLock::new(|| Regex::new(r"(?i)\bS(\d{1,2})E(\d{1,3})\b").unwrap());
+    LazyLock::new(|| Regex::new(r"(?i)\bS(\d{1,2})E(\d{1,3})(?:v\d+)?\b").unwrap());
 static SXX_DASH_EP_RE: LazyLock<Regex> =
     LazyLock::new(|| Regex::new(r"(?i)\bS(\d{1,2})\s*-\s*(\d{1,3})\b").unwrap());
 static SEASON_PACK_RE: LazyLock<Regex> =