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/General/SearchController.php

@@ -0,0 +1,50 @@
+<?php
+
+namespace App\Http\Controllers\Company\General;
+
+use App\Http\Controllers\Controller;
+use App\Models\Customer;
+use App\Models\User;
+use Illuminate\Http\Request;
+use Illuminate\Http\Response;
+
+class SearchController extends Controller
+{
+    /**
+     * Handle the incoming request.
+     *
+     * @return Response
+     */
+    public function __invoke(Request $request)
+    {
+        $user = $request->user();
+
+        $customers = Customer::applyFilters($request->only(['search']))
+            ->whereCompany()
+            ->latest()
+            ->paginate(10);
+
+        if ($user->isOwner()) {
+            $users = User::whereCompany()
+                ->applyFilters($request->only(['search']))
+                ->latest()
+                ->paginate(10);
+        }
+
+        return response()->json([
+            'customers' => $customers,
+            'users' => $users ?? [],
+        ]);
+    }
+
+    public function users(Request $request)
+    {
+        $this->authorize('create', User::class);
+
+        $users = User::whereEmail($request->email)
+            ->latest()
+            ->paginate(10);
+
+        return response()->json(['users' => $users]);
+    }
+}