feat(databases): use newer default images for standalone databases

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

database/migrations/2026_11_06_083240_update_standalone_database_default_images.php

@@ -0,0 +1,42 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * New default image for each standalone database table, with the previous default.
+     *
+     * Existing databases keep their image. Only new databases use the new default.
+     *
+     * @var array<string, array{new: string, old: string}>
+     */
+    private array $images = [
+        'standalone_postgresqls' => ['new' => 'postgres:18-alpine', 'old' => 'postgres:16-alpine'],
+        'standalone_redis' => ['new' => 'redis:8', 'old' => 'redis:7.2'],
+        'standalone_mongodbs' => ['new' => 'mongo:9', 'old' => 'mongo:7'],
+        'standalone_mysqls' => ['new' => 'mysql:9.7', 'old' => 'mysql:8'],
+        'standalone_mariadbs' => ['new' => 'mariadb:12.3', 'old' => 'mariadb:11'],
+        'standalone_clickhouses' => ['new' => 'clickhouse/clickhouse-server:26.8', 'old' => 'clickhouse/clickhouse-server:25.11'],
+    ];
+
+    public function up(): void
+    {
+        foreach ($this->images as $table => $image) {
+            Schema::table($table, function (Blueprint $blueprint) use ($image) {
+                $blueprint->string('image')->default($image['new'])->change();
+            });
+        }
+    }
+
+    public function down(): void
+    {
+        foreach ($this->images as $table => $image) {
+            Schema::table($table, function (Blueprint $blueprint) use ($image) {
+                $blueprint->string('image')->default($image['old'])->change();
+            });
+        }
+    }
+};