Raise audio upload limit to 2 GB per file.

Update validation, dropzone checks, Docker PHP ini, and docs so multi-hour recordings can be uploaded.

app/Http/Requests/StoreRecordingRequest.php

@@ -30,6 +30,11 @@ class StoreRecordingRequest extends FormRequest
         'aif',
     ];
 
+    /**
+     * Maximum upload size accepted by validation (2 GiB).
+     */
+    public const MAX_AUDIO_KILOBYTES = 2 * 1024 * 1024;
+
     public function authorize(): bool
     {
         return true;
@@ -54,7 +59,7 @@ class StoreRecordingRequest extends FormRequest
             'audio' => ['required', 'array', 'min:1', 'max:50'],
             'audio.*' => [
                 'required',
-                File::types(self::AUDIO_EXTENSIONS)->max(102400),
+                File::types(self::AUDIO_EXTENSIONS)->max('2gb'),
             ],
             'title' => ['nullable', 'string', 'max:255'],
         ];
@@ -71,7 +76,7 @@ class StoreRecordingRequest extends FormRequest
             'audio.max' => 'You can upload at most 50 files at once.',
             'audio.*.required' => 'Please choose an audio file to upload.',
             'audio.*' => 'Unsupported audio type. Use MP3, WAV, OGG, FLAC, M4A, AAC, WebM, WMA, or AIFF.',
-            'audio.*.max' => 'Each audio file may not be larger than 100 MB.',
+            'audio.*.max' => 'Each audio file may not be larger than 2 GB.',
         ];
     }
 }