Add country and payout currency selection to developer onboarding

Collect the developer's country and preferred payout currency during
Stripe Connect onboarding. This ensures Express accounts are created
with the correct country parameter and enables multi-currency payouts
for European/EEA countries.

- Add country (108 Stripe-supported countries) and payout_currency
  fields to developer_accounts table
- Add StripeConnectCountries support class with country data, currency
  names, and validation methods
- Update Livewire Onboarding component with reactive country/currency
  selection
- Use Flux Pro searchable listbox for the country dropdown
- Display currency names (e.g. "US Dollar (USD)") in the currency select
- Request card_payments capability alongside transfers to support all
  countries including cross-border (fixes JP account creation error)
- Add comprehensive validation in DeveloperOnboardingController
- Pass country to Stripe Connect account creation
- Use developer's payout_currency for transfers instead of hardcoded USD
- Install livewire/flux-pro for searchable select component
- Update CLAUDE.md with correct dependency versions (Filament v5,
  Livewire v4, PHP 8.4.19)

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

Author: simonhamp

CLAUDE.md

@@ -8,8 +8,8 @@ The Laravel Boost guidelines are specifically curated by Laravel maintainers for
 ## Foundational Context
 This application is a Laravel application and its main Laravel ecosystems package & versions are below. You are an expert with them all. Ensure you abide by these specific packages & versions.
 
-- php - 8.4.18
-- filament/filament (FILAMENT) - v3
+- php - 8.4.19
+- filament/filament (FILAMENT) - v5
 - laravel/cashier (CASHIER) - v15
 - laravel/framework (LARAVEL) - v12
 - laravel/horizon (HORIZON) - v5
@@ -18,7 +18,7 @@ This application is a Laravel application and its main Laravel ecosystems packag
 - laravel/prompts (PROMPTS) - v0
 - laravel/sanctum (SANCTUM) - v4
 - laravel/socialite (SOCIALITE) - v5
-- livewire/livewire (LIVEWIRE) - v3
+- livewire/livewire (LIVEWIRE) - v4
 - laravel/mcp (MCP) - v0
 - laravel/pint (PINT) - v1
 - laravel/sail (SAIL) - v1

app/Http/Controllers/DeveloperOnboardingController.php

@@ -4,8 +4,10 @@
 
 use App\Models\DeveloperAccount;
 use App\Services\StripeConnectService;
+use App\Support\StripeConnectCountries;
 use Illuminate\Http\RedirectResponse;
 use Illuminate\Http\Request;
+use Illuminate\Validation\Rule;
 use Illuminate\View\View;
 
 class DeveloperOnboardingController extends Controller
@@ -32,16 +34,33 @@ public function start(Request $request): RedirectResponse
     {
         $request->validate([
             'accepted_plugin_terms' => ['required', 'accepted'],
+            'country' => ['required', 'string', 'size:2', Rule::in(StripeConnectCountries::supportedCountryCodes())],
+            'payout_currency' => ['required', 'string', 'size:3'],
         ], [
             'accepted_plugin_terms.required' => 'You must accept the Plugin Developer Terms and Conditions.',
             'accepted_plugin_terms.accepted' => 'You must accept the Plugin Developer Terms and Conditions.',
+            'country.required' => 'Please select your country.',
+            'country.in' => 'The selected country is not supported for Stripe Connect.',
+            'payout_currency.required' => 'Please select a payout currency.',
         ]);
 
+        $country = strtoupper($request->input('country'));
+        $payoutCurrency = strtoupper($request->input('payout_currency'));
+
+        if (! StripeConnectCountries::isValidCurrencyForCountry($country, $payoutCurrency)) {
+            return back()->withErrors(['payout_currency' => 'The selected currency is not available for your country.']);
+        }
+
         $user = $request->user();
         $developerAccount = $user->developerAccount;
 
         if (! $developerAccount) {
-            $developerAccount = $this->stripeConnectService->createConnectAccount($user);
+            $developerAccount = $this->stripeConnectService->createConnectAccount($user, $country, $payoutCurrency);
+        } else {
+            $developerAccount->update([
+                'country' => $country,
+                'payout_currency' => $payoutCurrency,
+            ]);
         }
 
         if (! $developerAccount->hasAcceptedCurrentTerms()) {

app/Livewire/Customer/Developer/Onboarding.php

@@ -2,6 +2,7 @@
 
 namespace App\Livewire\Customer\Developer;
 
+use App\Support\StripeConnectCountries;
 use Livewire\Attributes\Computed;
 use Livewire\Attributes\Layout;
 use Livewire\Attributes\Title;
@@ -11,13 +12,31 @@
 #[Title('Developer Onboarding')]
 class Onboarding extends Component
 {
+    public string $country = '';
+
+    public string $payoutCurrency = '';
+
     public function mount(): void
     {
         $developerAccount = auth()->user()->developerAccount;
 
         if ($developerAccount && $developerAccount->hasCompletedOnboarding()) {
             $this->redirect(route('customer.developer.dashboard'), navigate: true);
         }
+
+        if ($developerAccount) {
+            $this->country = $developerAccount->country ?? '';
+            $this->payoutCurrency = $developerAccount->payout_currency ?? '';
+        }
+    }
+
+    public function updatedCountry(string $value): void
+    {
+        if (StripeConnectCountries::isSupported($value)) {
+            $this->payoutCurrency = StripeConnectCountries::defaultCurrency($value);
+        } else {
+            $this->payoutCurrency = '';
+        }
     }
 
     #[Computed]
@@ -32,6 +51,39 @@ public function hasExistingAccount(): bool
         return $this->developerAccount !== null;
     }
 
+    /**
+     * @return array<string, array{name: string, flag: string, default_currency: string, currencies: list<string>}>
+     */
+    #[Computed]
+    public function countries(): array
+    {
+        $countries = StripeConnectCountries::all();
+
+        uasort($countries, fn (array $a, array $b) => $a['name'] <=> $b['name']);
+
+        return $countries;
+    }
+
+    /**
+     * @return array<string, string>
+     */
+    #[Computed]
+    public function availableCurrencies(): array
+    {
+        if (! $this->country || ! StripeConnectCountries::isSupported($this->country)) {
+            return [];
+        }
+
+        $currencies = StripeConnectCountries::availableCurrencies($this->country);
+
+        $named = [];
+        foreach ($currencies as $code) {
+            $named[$code] = StripeConnectCountries::currencyName($code);
+        }
+
+        return $named;
+    }
+
     public function render()
     {
         return view('livewire.customer.developer.onboarding');

app/Services/StripeConnectService.php

@@ -19,15 +19,17 @@
  */
 class StripeConnectService
 {
-    public function createConnectAccount(User $user): DeveloperAccount
+    public function createConnectAccount(User $user, string $country, string $payoutCurrency): DeveloperAccount
     {
         $account = Cashier::stripe()->accounts->create([
             'type' => 'express',
+            'country' => $country,
             'email' => $user->email,
             'metadata' => [
                 'user_id' => $user->id,
             ],
             'capabilities' => [
+                'card_payments' => ['requested' => true],
                 'transfers' => ['requested' => true],
             ],
         ]);
@@ -38,6 +40,8 @@ public function createConnectAccount(User $user): DeveloperAccount
             'stripe_connect_status' => StripeConnectStatus::Pending,
             'payouts_enabled' => false,
             'charges_enabled' => false,
+            'country' => $country,
+            'payout_currency' => $payoutCurrency,
         ]);
     }
 
@@ -109,7 +113,7 @@ public function processTransfer(PluginPayout $payout): bool
         try {
             $transferParams = [
                 'amount' => $payout->developer_amount,
-                'currency' => 'usd',
+                'currency' => strtolower($developerAccount->payout_currency ?? 'usd'),
                 'destination' => $developerAccount->stripe_connect_account_id,
                 'metadata' => [
                     'payout_id' => $payout->id,