feat: is_read di violation_notifications + unread count + mark all read

database/migrations/2026_08_06_000003_add_is_read_to_violation_notifications.php

@@ -0,0 +1,23 @@
+<?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('violation_notifications', function (Blueprint $table) {
+            $table->boolean('is_read')->default(false)->after('status');
+            $table->timestamp('read_at')->nullable()->after('is_read');
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::table('violation_notifications', function (Blueprint $table) {
+            $table->dropColumn(['is_read', 'read_at']);
+        });
+    }
+};