Add Docker stack, Reverb live progress, and duplicate upload detection.

Ship FrankenPHP Compose services with Reverb WebSockets for real-time transcription status, skip re-uploading identical audio via content hash, and format disk usage without requiring intl.

app/Jobs/TranscribeRecording.php

@@ -143,6 +143,8 @@ class TranscribeRecording implements ShouldQueue
                 'transcribed_at' => now(),
             ])->save();
 
+            $this->recording->broadcastTranscriptionUpdated();
+
             return true;
         }
 
@@ -165,6 +167,8 @@ class TranscribeRecording implements ShouldQueue
                 'transcribed_at' => now(),
             ])->save();
 
+            $this->recording->broadcastTranscriptionUpdated();
+
             return true;
         }