fix(seeding): ensure root user joins root team

Create the root team before production seeding depends on it, reuse the
existing root team when creating root users, and cover the production seeder
flow with a feature test.

database/seeders/ProductionSeeder.php

@@ -32,6 +32,16 @@ class ProductionSeeder extends Seeder
             echo "  Running in self-hosted mode.\n";
         }
 
+        if (Team::find(0) === null) {
+            (new Team)->forceFill([
+                'id' => 0,
+                'name' => 'Root Team',
+                'description' => 'The root team',
+                'personal_team' => true,
+                'show_boarding' => true,
+            ])->save();
+        }
+
         if (User::find(0) !== null && Team::find(0) !== null) {
             if (DB::table('team_user')->where('user_id', 0)->first() === null) {
                 DB::table('team_user')->insert([

database/seeders/RootUserSeeder.php

@@ -3,6 +3,7 @@
 namespace Database\Seeders;
 
 use App\Models\InstanceSettings;
+use App\Models\Team;
 use App\Models\User;
 use Illuminate\Database\Seeder;
 use Illuminate\Support\Facades\Hash;
@@ -52,6 +53,12 @@ class RootUserSeeder extends Seeder
                     'password' => Hash::make(env('ROOT_USER_PASSWORD')),
                 ]);
                 $user->save();
+
+                $team = Team::find(0);
+                if ($team !== null && ! $user->teams()->where('team_id', 0)->exists()) {
+                    $user->teams()->attach($team, ['role' => 'owner']);
+                }
+
                 echo "\n  SUCCESS  Root user created successfully.\n\n";
             } catch (\Exception $e) {
                 echo "\n  ERROR  Failed to create root user: {$e->getMessage()}\n\n";