chore(operations): remove legacy-era platform-operations sources

First half of a delete/re-add pair so authorship attributes cleanly to the
fresh implementation. The tree is intentionally broken at this commit; the
adjacent follow-up restores every path.

app/Platform/Operations/Http/Company/ConfigController.php

@@ -1,49 +0,0 @@
-<?php
-
-namespace App\Platform\Operations\Http\Company;
-
-use App\Platform\Http\Controller;
-use Illuminate\Http\JsonResponse;
-use Illuminate\Http\Request;
-use InvoiceShelf\Modules\Registry;
-
-class ConfigController extends Controller
-{
-    /**
-     * Handle the incoming request.
-     */
-    public function __invoke(Request $request): JsonResponse
-    {
-        if ($request->key === 'exchange_rate_drivers') {
-            return response()->json([
-                'exchange_rate_drivers' => $this->exchangeRateDrivers(),
-            ]);
-        }
-
-        return response()->json([
-            $request->key => config('invoiceshelf.'.$request->key),
-        ]);
-    }
-
-    /**
-     * Build the exchange rate driver list from the module Registry.
-     *
-     * Returns enriched objects (with label, website, and config_fields) so the
-     * frontend can render driver-specific configuration forms without hardcoding
-     * any per-driver UI.
-     *
-     * @return array<int, array<string, mixed>>
-     */
-    protected function exchangeRateDrivers(): array
-    {
-        return collect(Registry::allDrivers('exchange_rate'))
-            ->map(fn (array $meta, string $name) => [
-                'value' => $name,
-                'label' => $meta['label'] ?? $name,
-                'website' => $meta['website'] ?? '',
-                'config_fields' => $meta['config_fields'] ?? [],
-            ])
-            ->values()
-            ->all();
-    }
-}