Detect release group after bracketed metadata suffix

Naming-bot style releases like:
  Family Guy (1999) - S22E15 - Faith No More [HULU WEBDL-1080p]
  [EAC3 5.1][h264]-NTb
tack the group on with a dash right after the last metadata bracket,
rather than as a bare word ("x264-Group") or inside a trailing
parenthetical. FileSuffixTagRegex only matched the bare-word case, so
this pattern fell through untouched.

Added FileSuffixBracketDashTagRegex to catch "[bracket]-Group" at the
end of the stem, guarded by IsMetadataBracket on the bracket contents
so an ordinary hyphenated word after an unrelated bracket (e.g.
"[Interview]-Style") is never mistaken for a group suffix.

Futonizer.csproj

@@ -9,8 +9,8 @@
     <ImplicitUsings>enable</ImplicitUsings>
     <AssemblyName>Futonizer</AssemblyName>
     <RootNamespace>Futonizer</RootNamespace>
-    <Version>1.0.11</Version>
+    <Version>1.0.12</Version>
-    <FileVersion>1.0.11.0</FileVersion>
+    <FileVersion>1.0.12.0</FileVersion>
     <ApplicationIcon>Assets\app.ico</ApplicationIcon>
   </PropertyGroup>
 

Services/FileNameHelper.cs

@@ -30,6 +30,16 @@ public static class FileNameHelper
     private static readonly Regex FileSuffixTagRegex =
         new(@"(?:^|[\s.])([A-Za-z0-9]+)-([A-Za-z][A-Za-z0-9]{2,20})$", RegexOptions.Compiled);
 
+    // File suffix release tag directly after a bracketed metadata block:
+    // "...[HULU WEBDL-1080p][EAC3 5.1][h264]-NTb"  →  tag = "NTb"
+    // Common on naming-bot-style releases that group tech specs into their
+    // own brackets and tack the group on with a dash at the very end. The
+    // bracket immediately before the dash must itself be recognisable
+    // metadata (checked by the caller via IsMetadataBracket), mirroring
+    // FileSuffixTagRegex's guard for the bare-word case.
+    private static readonly Regex FileSuffixBracketDashTagRegex =
+        new(@"\[([^\[\]]+)\]-([A-Za-z][A-Za-z0-9]{2,20})$", RegexOptions.Compiled);
+
     // Trailing parenthesised metadata block ending in the release group as its
     // last word, e.g. "... (1080p AMZN WEB-DL x265 Celdra)" → group="Celdra".
     // Common on Amazon/streaming rips that don't set the group off with a
@@ -87,10 +97,12 @@ public static class FileNameHelper
     /// (in order):
     /// <list type="number">
     ///   <item>Filename suffix tag extraction — a trailing <c>-GroupName</c> on
-    ///         the filename stem, or a release group tucked in as the last word
+    ///         the filename stem, a group tacked on after a bracketed metadata
-    ///         of a trailing <c>(...)</c> metadata block (e.g. Amazon rips like
+    ///         block (e.g. <c>[h264]-NTb</c>), or a release group tucked in as
-    ///         <c>(1080p AMZN WEB-DL x265 Celdra)</c>), is stripped and promoted
+    ///         the last word of a trailing <c>(...)</c> metadata block (e.g.
-    ///         to a bracket prefix. Takes priority over any folder-derived tag.</item>
+    ///         Amazon rips like <c>(1080p AMZN WEB-DL x265 Celdra)</c>), is
+    ///         stripped and promoted to a bracket prefix. Takes priority over
+    ///         any folder-derived tag.</item>
     ///   <item>Show-name injection — if the (now tag-free) filename starts with
     ///         an episode code (e.g. S01E01) the show name is derived from the
     ///         parent folder and prepended.</item>
@@ -121,6 +133,7 @@ public static class FileNameHelper
         //    hyphenated title words are left alone.
         string? fileTag = null;
         var fileSuffixMatch = FileSuffixTagRegex.Match(stemNoExt);
+        var bracketDashMatch = FileSuffixBracketDashTagRegex.Match(stemNoExt);
         if (fileSuffixMatch.Success
             && IsMetadataToken(fileSuffixMatch.Groups[1].Value)
             && !IsMetadataToken(fileSuffixMatch.Groups[2].Value))
@@ -129,6 +142,16 @@ public static class FileNameHelper
             stemNoExt = stemNoExt[..(fileSuffixMatch.Groups[2].Index - 1)];
             fileName  = stemNoExt + ext;
         }
+        else if (bracketDashMatch.Success
+            && IsMetadataBracket(bracketDashMatch.Groups[1].Value)
+            && !IsMetadataToken(bracketDashMatch.Groups[2].Value))
+        {
+            // 1a. Extract a release group tacked on after a bracketed metadata
+            //     block, e.g. "...[h264]-NTb" → tag="NTb", stem="...[h264]".
+            fileTag  = bracketDashMatch.Groups[2].Value;
+            stemNoExt = stemNoExt[..(bracketDashMatch.Groups[2].Index - 1)];
+            fileName  = stemNoExt + ext;
+        }
         else
         {
             // 1b. Extract a release group tucked in as the last word of a