Rename controller namespaces: drop V1 prefix, clarify roles

V1/Admin     -> Company       (company-scoped controllers)
V1/SuperAdmin -> Admin        (platform-wide admin controllers)
V1/Customer  -> CustomerPortal (customer-facing portal)
V1/Installation -> Setup      (installation wizard)
V1/PDF       -> Pdf           (consistent casing)
V1/Modules   -> Modules       (drop V1 prefix)
V1/Webhook   -> Webhook       (drop V1 prefix)

The V1 prefix served no purpose - API versioning is in the route prefix
(/api/v1/), not the controller namespace. "Admin" was misleading for
company-scoped controllers. "SuperAdmin" is now simply "Admin" for
platform administration.

app/Http/Controllers/Company/Customer/CustomerStatsController.php

@@ -0,0 +1,34 @@
+<?php
+
+namespace App\Http\Controllers\Company\Customer;
+
+use App\Http\Controllers\Controller;
+use App\Http\Resources\CustomerResource;
+use App\Models\Customer;
+use App\Services\CustomerService;
+use Illuminate\Http\Request;
+
+class CustomerStatsController extends Controller
+{
+    public function __construct(
+        private readonly CustomerService $customerService,
+    ) {}
+
+    public function __invoke(Request $request, Customer $customer)
+    {
+        $this->authorize('view', $customer);
+
+        $chartData = $this->customerService->getStats(
+            $customer,
+            $request->header('company'),
+            $request->has('previous_year')
+        );
+
+        $customer = Customer::find($customer->id);
+
+        return (new CustomerResource($customer))
+            ->additional(['meta' => [
+                'chartData' => $chartData,
+            ]]);
+    }
+}