🎉 **Introduce meetup activity management**

- Added `is_active` and `last_event_at` fields to meetups with migration.
- Enhanced UI: Display `Aktiv`/`Inaktiv` badges and last event dates across dashboard, tables, and maps.
- Introduced `/meetups:update-activity` command to manage activity flags and timestamps.
- Validated latitude/longitude to prevent `0,0` inputs in city creation and updates.
- Updated factories and tests to include meetup activity states (`active`, `inactive`).

database/migrations/2026_05_17_153816_add_activity_fields_to_meetups_table.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('meetups', function (Blueprint $table) {
+            $table->boolean('is_active')->default(false)->after('visible_on_map');
+            $table->timestamp('last_event_at')->nullable()->after('is_active');
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::table('meetups', function (Blueprint $table) {
+            $table->dropColumn(['is_active', 'last_event_at']);
+        });
+    }
+};