✨ Enhance meetup association and permissions management

- 🔍 Added `resolveInScope` method to `ResolvesEntities` for scoped entity resolution with stricter control.
- 👥 Introduced `AddMeetupToMineTool` MCP tool for adding external meetups to "My Meetups."
- 🛠️ Updated `ListMyMeetupsTool` and `ShowMyMeetupTool` to include both created and joined meetups.
- 📚 Updated `Meetup` model with `associatedWith` scope for querying user-related meetups.
- ✅ Expanded feature tests for meetup membership, creator permissions, and scoped tool usage.
- 🛡️ Unified access checks across Livewire and APIs to restrict editing meetup details to creators or super-admins.
- 🔗 Registered `AddMeetupToMineTool` in `EinundzwanzigServer`.

app/Mcp/Tools/Meetup/ListMyMeetupsTool.php

@@ -12,7 +12,7 @@ use Laravel\Mcp\Server\Tool;
 use Laravel\Mcp\Server\Tools\Annotations\IsReadOnly;
 
 #[IsReadOnly]
-#[Description('Listet alle vom authentifizierten Nutzer erstellten Meetups, alphabetisch sortiert.')]
+#[Description('Listet die Meetups des authentifizierten Nutzers (selbst erstellte UND beigetretene), alphabetisch sortiert.')]
 class ListMyMeetupsTool extends Tool
 {
     public function handle(Request $request): Response
@@ -24,7 +24,7 @@ class ListMyMeetupsTool extends Tool
         }
 
         $meetups = Meetup::query()
-            ->where('created_by', $user->getAuthIdentifier())
+            ->associatedWith($user->getAuthIdentifier())
             ->orderBy('name')
             ->get();