fix unit tests as well as missing code

database/factories/ClassProgressReportFactory.php

@@ -23,6 +23,7 @@ class ClassProgressReportFactory extends Factory
             'unit_title' => 'Unit 1 / Chapter A',
             'covered' => 'Lesson overview',
             'homework' => 'Practice reading',
+            'next_week_plan' => 'Continue with the next lesson',
             'status' => 'on_track',
             'support_needed' => null,
             'flags_json' => ['flag'],

database/migrations/2026_06_25_000000_add_timezone_to_user_preferences_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
+{
+    public function up(): void
+    {
+        if (! Schema::hasTable('user_preferences') || Schema::hasColumn('user_preferences', 'timezone')) {
+            return;
+        }
+
+        Schema::table('user_preferences', function (Blueprint $table): void {
+            $table->string('timezone', 80)->default('UTC')->after('language');
+        });
+    }
+
+    public function down(): void
+    {
+        if (! Schema::hasTable('user_preferences') || ! Schema::hasColumn('user_preferences', 'timezone')) {
+            return;
+        }
+
+        Schema::table('user_preferences', function (Blueprint $table): void {
+            $table->dropColumn('timezone');
+        });
+    }
+};

database/migrations/2026_06_25_000001_add_updated_at_to_communication_logs_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
+{
+    public function up(): void
+    {
+        if (! Schema::hasTable('communication_logs') || Schema::hasColumn('communication_logs', 'updated_at')) {
+            return;
+        }
+
+        Schema::table('communication_logs', function (Blueprint $table): void {
+            $table->dateTime('updated_at')->nullable()->after('created_at');
+        });
+    }
+
+    public function down(): void
+    {
+        if (! Schema::hasTable('communication_logs') || ! Schema::hasColumn('communication_logs', 'updated_at')) {
+            return;
+        }
+
+        Schema::table('communication_logs', function (Blueprint $table): void {
+            $table->dropColumn('updated_at');
+        });
+    }
+};