// Always send Welcome Mail (now without button)
            try {
                \Illuminate\Support\Facades\Mail::to($client->email)->send(new \App\Mail\WelcomeMail($client));
            }
            catch (\Exception $e) {
                \Illuminate\Support\Facades\Log::error('Failed to send welcome email: ' . $e->getMessage());
            }

            return $client;
        });

        // Check if OTP is enabled for registration (outside transaction)
        $otpEnabled = \App\Models\Setting::where('key', 'registration_otp_enabled')->value('value') ?? '1';

        if ($otpEnabled === '0') {
             $client->forceFill(['email_verified_at' => now()])->save();
             return redirect()->route('client.login.show')
                 ->with('status', 'Registration successful! Please login.');
        }

        // Generate and Send OTP (outside transaction to ensure session persists)
        session([
            'client_otp' => [
                'client_id' => $client->id,
                'purpose' => 'registration',
            ],
        ]);

        $this->otpService->generateAndSend(
            $client->email,
            'registration',
            $request->ip(),
            $request->userAgent()
        );

        return redirect()->route('client.otp.show')
            ->with('status', 'Registration successful! We have sent a verification code to your email.');
    }