feat(events): add exact_location field to events and update related logic

database/migrations/2026_09_18_001000_add_exact_location_to_events.php

@@ -0,0 +1,22 @@
+<?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('events', function (Blueprint $table): void {
+            $table->json('exact_location')->nullable()->after('location');
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::table('events', function (Blueprint $table): void {
+            $table->dropColumn('exact_location');
+        });
+    }
+};