Fix Postgres backup connection and statuses nullability

config/backup.php

@@ -77,8 +77,23 @@ return [
                 ],
             ],
 
+            'mariadb' => [
+                'dump' => [
+                    'useSingleTransaction' => true,
+                    'useQuick' => true,
+                ],
+            ],
+
+            'pgsql' => [
+                'dump' => [
+                    'useSingleTransaction' => true,
+                    'useQuick' => true,
+                ],
+            ],
+
+            // Hardcoding 'mysql' breaks backup:run on non-MySQL installs
             'databases' => [
-                'mysql',
+                env('DB_CONNECTION', 'mysql'),
             ],
         ],
 

database/migrations/2025_02_10_194847_fix_non_nullable_postgres_errors.php

@@ -0,0 +1,32 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * 2018_08_12_042648_update_status_table_change_caption_to_text calls
+     * `->change()` without `->nullable()`, making both columns NOT NULL.
+     * DirectMessageController still writes null into caption, which errors
+     * on PostgreSQL.
+     */
+    public function up(): void
+    {
+        Schema::table('statuses', function ($table) {
+            $table->text('caption')->nullable()->change();
+            $table->text('rendered')->nullable()->change();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        //
+    }
+};