Show active HLS segment count in transcode card

Live TV and Direct Stream sessions never appear in the transcoding
session list but do write segments to the ramdisk. Card now shows
the active segment count so the ramdisk usage is explained.

Plugin/unraid/include/common.php

@@ -748,9 +748,23 @@ function vv_transcode_sessions(): array {
     $flipCount    = (int)($raw['flip_count_hour'] ?? 0);
     $isRamdisk    = str_contains($target, 'ramdisk');
 
-    // Count active session dirs in both known locations
+    // Count active sessions: subdirs (legacy transcode) + unique hex prefixes (Live TV / Direct Stream HLS)
     $ramdiskPath = '/mnt/ramdisk_transcodes/transcoding-temp';
     $ramSessions = count(glob("$ramdiskPath/*/", GLOB_ONLYDIR) ?: []);
+    $maxAge      = (int)(vv_conf_vars()['TRANSCODE_MAX_AGE'] ?? 20);
+    $activeFiles = 0;
+    $cutoff      = time() - $maxAge * 60;
+    $flatPrefixes = [];
+    if (is_dir($ramdiskPath)) {
+        foreach (new DirectoryIterator($ramdiskPath) as $f) {
+            if (!$f->isFile()) continue;
+            if (preg_match('/^([0-9a-f]{16,})/', $f->getFilename(), $m)) {
+                $flatPrefixes[$m[1]] = true;
+            }
+            if ($f->getMTime() >= $cutoff) $activeFiles++;
+        }
+    }
+    $ramSessions += count($flatPrefixes);
 
     // SSD path: first transcoding-temp mount that is not a RAM filesystem (tmpfs/ramfs)
     $ssdPath     = '';
@@ -800,6 +814,7 @@ function vv_transcode_sessions(): array {
         'last_flip_ago'   => $lastFlip > 0 ? time() - $lastFlip : null,
         'ram_sessions'    => $ramSessions,
         'ssd_sessions'    => $ssdSessions,
+        'active_files'    => $activeFiles,
         'ramdisk'         => $rd,
         'ssd'             => $ssd,
         'last_rd_freed'   => $lastRdFreed,