✨ Add SearchMeetupsTool for duplication prevention

- 🔍 Introduced `SearchMeetupsTool` to find existing meetups by name or city before creating new ones.
- ☑️ Updated `CreateMeetupTool` description and logic to enforce pre-checks for existing meetups.
- 🛠️ Adjusted `EinundzwanzigServer` to include `SearchMeetupsTool` in tools list.
- ✅ Added feature tests to verify meetup search functionality and ensure duplication avoidance.

tests/Feature/Mcp/EinundzwanzigServerTest.php

@@ -17,7 +17,7 @@ it('registers every domain tool on the server', function () {
     $property = (new ReflectionClass(EinundzwanzigServer::class))->getProperty('tools');
     $tools = $property->getDefaultValue();
 
-    expect($tools)->toHaveCount(30)
+    expect($tools)->toHaveCount(31)
         ->and($tools)->toContain(CreateMeetupTool::class)
         ->and($tools)->toContain(UpdateCourseEventTool::class)
         ->and($tools)->toContain(SearchCitiesTool::class);

tests/Feature/Mcp/SearchMeetupsMcpTest.php

@@ -0,0 +1,35 @@
+<?php
+
+use App\Mcp\Servers\EinundzwanzigServer;
+use App\Mcp\Tools\Search\SearchMeetupsTool;
+use App\Models\City;
+use App\Models\Meetup;
+use App\Models\User;
+
+it('finds an existing meetup by its name', function () {
+    Meetup::factory()->create(['name' => 'Einundzwanzig München']);
+
+    EinundzwanzigServer::actingAs(User::factory()->create())
+        ->tool(SearchMeetupsTool::class, ['search' => 'münchen'])
+        ->assertOk()
+        ->assertSee('Einundzwanzig München');
+});
+
+it('finds an existing meetup by its city name', function () {
+    $city = City::factory()->create(['name' => 'Nürnberg']);
+    Meetup::factory()->create(['name' => 'Bitcoin Treff', 'city_id' => $city->id]);
+
+    EinundzwanzigServer::actingAs(User::factory()->create())
+        ->tool(SearchMeetupsTool::class, ['search' => 'Nürnberg'])
+        ->assertOk()
+        ->assertSee('Bitcoin Treff');
+});
+
+it('returns no match for an unknown city so a new meetup can be proposed', function () {
+    Meetup::factory()->create(['name' => 'Einundzwanzig München']);
+
+    $response = EinundzwanzigServer::actingAs(User::factory()->create())
+        ->tool(SearchMeetupsTool::class, ['search' => 'Gibtsnichtstadt']);
+
+    $response->assertOk()->assertDontSee('Einundzwanzig München');
+});