refactor(services): Documents→Document + ExchangeRate→Integrations/ExchangeRate

Two follow-ups to the Services reorg that landed in 6d1816bd.

**Documents → Document** (singular). Documents/ was the only plural subdir in app/Services/ — every other bucket (Company, Mail, Module, Pdf, Storage, Update, ExchangeRate) was singular. Renaming to Document/ normalizes the whole tree.

**ExchangeRate → Integrations/ExchangeRate**. Introduces Integrations/ as an umbrella for external-service adapter subsystems. Exchange rate providers move in first; AI providers, payment gateways, and any other driver-pattern integrations land as sibling subdirs (Integrations/Ai/, Integrations/Payment/) without another reorg. Integrations/ was chosen over Providers/ to avoid conceptual collision with Laravel's app/Providers/ — 'check the providers' shouldn't be ambiguous.

17 files moved, 21 consumer files rewritten to point at the new namespaces via literal-string replacement (same approach as the previous reorg). 350 tests pass, Pint clean.

app/Http/Controllers/Admin/CurrenciesController.php

@@ -4,7 +4,7 @@ namespace App\Http\Controllers\Admin;
 
 use App\Http\Controllers\Controller;
 use App\Http\Resources\CurrencyResource;
-use App\Services\Documents\CurrencyService;
+use App\Services\Document\CurrencyService;
 use Illuminate\Http\Request;
 use Illuminate\Http\Resources\Json\AnonymousResourceCollection;
 

app/Http/Controllers/Company/Estimate/EstimatesController.php

@@ -11,7 +11,7 @@ use App\Http\Resources\InvoiceResource;
 use App\Jobs\GenerateEstimatePdfJob;
 use App\Models\Estimate;
 use App\Models\Invoice;
-use App\Services\Documents\EstimateService;
+use App\Services\Document\EstimateService;
 use Illuminate\Http\Request;
 use Illuminate\Mail\Markdown;
 

app/Http/Controllers/Company/ExchangeRate/ExchangeRateProviderController.php

@@ -14,7 +14,7 @@ use App\Models\ExchangeRateProvider;
 use App\Models\Invoice;
 use App\Models\Payment;
 use App\Models\Tax;
-use App\Services\ExchangeRate\ExchangeRateProviderService;
+use App\Services\Integrations\ExchangeRate\ExchangeRateProviderService;
 use Illuminate\Http\Request;
 use Illuminate\Http\Response;
 use Illuminate\Support\Arr;

app/Http/Controllers/Company/Expense/ExpensesController.php

@@ -8,7 +8,7 @@ use App\Http\Requests\ExpenseRequest;
 use App\Http\Requests\UploadExpenseReceiptRequest;
 use App\Http\Resources\ExpenseResource;
 use App\Models\Expense;
-use App\Services\Documents\ExpenseService;
+use App\Services\Document\ExpenseService;
 use Illuminate\Http\JsonResponse;
 use Illuminate\Http\Request;
 

app/Http/Controllers/Company/General/SerialNumberController.php

@@ -6,7 +6,7 @@ use App\Http\Controllers\Controller;
 use App\Models\Estimate;
 use App\Models\Invoice;
 use App\Models\Payment;
-use App\Services\Documents\SerialNumberService;
+use App\Services\Document\SerialNumberService;
 use Illuminate\Http\JsonResponse;
 use Illuminate\Http\Request;
 

app/Http/Controllers/Company/Invoice/InvoicesController.php

@@ -11,7 +11,7 @@ use App\Http\Resources\InvoiceResource;
 use App\Jobs\GenerateInvoicePdfJob;
 use App\Models\Estimate;
 use App\Models\Invoice;
-use App\Services\Documents\InvoiceService;
+use App\Services\Document\InvoiceService;
 use Illuminate\Http\JsonResponse;
 use Illuminate\Http\Request;
 use Illuminate\Mail\Markdown;

app/Http/Controllers/Company/Payment/PaymentsController.php

@@ -8,7 +8,7 @@ use App\Http\Requests\PaymentRequest;
 use App\Http\Requests\SendPaymentRequest;
 use App\Http\Resources\PaymentResource;
 use App\Models\Payment;
-use App\Services\Documents\PaymentService;
+use App\Services\Document\PaymentService;
 use Illuminate\Http\Request;
 use Illuminate\Http\Response;
 use Illuminate\Mail\Markdown;

app/Http/Controllers/Company/RecurringInvoice/RecurringInvoiceController.php

@@ -6,7 +6,7 @@ use App\Http\Controllers\Controller;
 use App\Http\Requests\RecurringInvoiceRequest;
 use App\Http\Resources\RecurringInvoiceResource;
 use App\Models\RecurringInvoice;
-use App\Services\Documents\RecurringInvoiceService;
+use App\Services\Document\RecurringInvoiceService;
 use Illuminate\Http\Request;
 use Illuminate\Http\Response;
 

app/Http/Controllers/Pdf/DocumentPdfController.php

@@ -6,8 +6,8 @@ use App\Http\Controllers\Controller;
 use App\Models\Estimate;
 use App\Models\Invoice;
 use App\Models\Payment;
-use App\Services\Documents\EstimateService;
-use App\Services\Documents\InvoiceService;
+use App\Services\Document\EstimateService;
+use App\Services\Document\InvoiceService;
 use Illuminate\Http\Request;
 
 class DocumentPdfController extends Controller