✨ Add whereLike and orWhereLike macros for driver-agnostic case-insensitive searches

- 🔄 Replace `ilike`/`like` conditions with `whereLike` in API controllers and search tools for consistency.
- 🚀 Enhance query usability by ensuring cross-database compatibility (PostgreSQL and SQLite).

app/Providers/AppServiceProvider.php

@@ -5,6 +5,7 @@ namespace App\Providers;
 use App\Support\Carbon;
 use Illuminate\Cache\RateLimiting\Limit;
 use Illuminate\Contracts\Auth\Authenticatable;
+use Illuminate\Database\Eloquent\Builder;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Foundation\Events\DiagnosingHealth;
 use Illuminate\Http\Request;
@@ -39,6 +40,22 @@ class AppServiceProvider extends ServiceProvider
     {
         $this->configureRateLimiting();
 
+        // Case-insensitive Teilstring-Suche DB-portabel halten: PostgreSQL
+        // kennt `ilike`, SQLite (lokales Dev / Tests) nicht — dort liefert ein
+        // hartkodiertes `ilike` einen Syntaxfehler. Auf SQLite ist `like`
+        // ohnehin case-insensitiv (ASCII), sodass das Produktionsverhalten
+        // (PostgreSQL/ilike) unverändert bleibt. Verwendung in den API-
+        // Controllern: ->whereLike('name', "%{$search}%").
+        Builder::macro('whereLike', function (string $column, string $value, string $boolean = 'and') {
+            $operator = $this->getConnection()->getDriverName() === 'pgsql' ? 'ilike' : 'like';
+
+            return $this->where($column, $operator, $value, $boolean);
+        });
+
+        Builder::macro('orWhereLike', function (string $column, string $value) {
+            return $this->whereLike($column, $value, 'or');
+        });
+
         Gate::define('viewApiDocs', fn (?Authenticatable $user = null): bool => true);
 
         // OAuth-2.1-Flow des MCP-Servers (Claude.ai Web-Connector).