Stand: SMTP-Test, Admin-Mail-Tab, Notifiable-Fix, Lazy-Quill

- Fix: Notifiable-Trait zum User-Model hinzugefuegt (behebt notify()-500er)
- Installer: SMTP-Verbindungstest mit EsmtpTransport + Ueberspringen-Link
- Admin: Neuer E-Mail-Tab mit SMTP-Konfiguration + Verbindungstest
- Admin: Lazy Quill-Initialisierung (nur sichtbare Locale wird geladen)
- Uebersetzungen: 17 neue Mail-Keys in allen 6 Sprachen

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/Models/Team.php

@@ -0,0 +1,67 @@
+<?php
+
+namespace App\Models;
+
+use App\Enums\UserRole;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Database\Eloquent\Relations\BelongsToMany;
+use Illuminate\Database\Eloquent\Relations\HasMany;
+use Illuminate\Support\Collection;
+
+class Team extends Model
+{
+    protected $fillable = [
+        'name',
+        'year_group',
+        'is_active',
+        'notes',
+    ];
+
+    protected function casts(): array
+    {
+        return [
+            'is_active' => 'boolean',
+        ];
+    }
+
+    public function players(): HasMany
+    {
+        return $this->hasMany(Player::class);
+    }
+
+    public function events(): HasMany
+    {
+        return $this->hasMany(Event::class);
+    }
+
+    public function activePlayers(): HasMany
+    {
+        return $this->hasMany(Player::class)->where('is_active', true);
+    }
+
+    public function coaches(): BelongsToMany
+    {
+        return $this->belongsToMany(User::class, 'team_user')
+            ->withPivot('created_at');
+    }
+
+    public function files(): BelongsToMany
+    {
+        return $this->belongsToMany(File::class, 'team_file')
+            ->withPivot('created_at');
+    }
+
+    public function parentReps(): Collection
+    {
+        return User::where('role', UserRole::ParentRep)
+            ->where('is_active', true)
+            ->whereHas('children', fn ($q) => $q->where('team_id', $this->id))
+            ->orderBy('name')
+            ->get();
+    }
+
+    public function scopeActive($query)
+    {
+        return $query->where('is_active', true);
+    }
+}