Harden stuck Whisper recovery and record transcription duration.

Fail jobs on timeout, treat stale reserved queue rows as orphans, skip migrate/seed on queue/reverb boot, and store how long each successful run took.

database/migrations/2026_08_12_220211_add_transcription_duration_seconds_to_recordings_table.php

@@ -0,0 +1,30 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::table('recordings', function (Blueprint $table) {
+            $table->unsignedInteger('transcription_duration_seconds')
+                ->nullable()
+                ->after('transcribed_at');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('recordings', function (Blueprint $table) {
+            $table->dropColumn('transcription_duration_seconds');
+        });
+    }
+};