Add notification preferences and admin governance

database/migrations/2026_07_11_001000_expand_notification_preferences.php

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+<?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
+    {
+        Schema::table('notification_preferences', function (Blueprint $table) {
+            $table->boolean('in_app_enabled')->default(true)->after('dispute_updates');
+            $table->json('event_preferences')->nullable()->after('push_enabled');
+            $table->string('digest_frequency')->default('immediate')->after('event_preferences');
+            $table->time('quiet_hours_start')->nullable()->after('digest_frequency');
+            $table->time('quiet_hours_end')->nullable()->after('quiet_hours_start');
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::table('notification_preferences', function (Blueprint $table) {
+            $table->dropColumn([
+                'in_app_enabled',
+                'event_preferences',
+                'digest_frequency',
+                'quiet_hours_start',
+                'quiet_hours_end',
+            ]);
+        });
+    }
+};

database/migrations/2026_07_11_001100_create_audit_logs_table.php

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+<?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
+    {
+        Schema::create('audit_logs', function (Blueprint $table) {
+            $table->id();
+            $table->foreignId('actor_id')->nullable()->constrained('users')->nullOnDelete();
+            $table->string('action');
+            $table->nullableMorphs('auditable');
+            $table->json('metadata')->nullable();
+            $table->string('ip_address')->nullable();
+            $table->string('user_agent', 500)->nullable();
+            $table->timestamps();
+
+            $table->index(['action', 'created_at']);
+            $table->index(['actor_id', 'created_at']);
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::dropIfExists('audit_logs');
+    }
+};

database/migrations/2026_07_11_001200_create_moderation_reports_table.php

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+<?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
+    {
+        Schema::create('moderation_reports', function (Blueprint $table) {
+            $table->id();
+            $table->foreignId('reporter_id')->constrained('users')->cascadeOnDelete();
+            $table->morphs('reportable');
+            $table->string('reason_code')->default('other');
+            $table->text('details');
+            $table->string('status')->default('open');
+            $table->foreignId('moderated_by_id')->nullable()->constrained('users')->nullOnDelete();
+            $table->timestamp('moderated_at')->nullable();
+            $table->text('moderation_notes')->nullable();
+            $table->timestamps();
+
+            $table->index(['status', 'created_at']);
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::dropIfExists('moderation_reports');
+    }
+};