feat(admin): IP pool allocation, billing exports, service attachments

- IP pool: sheet import (xlsx/csv) matched by address, bulk allocate/revoke
  with notification email (ip_allocated/ip_revoked), ip_pool_logs history.
- Orders/invoices: Excel export on branded template (BrandedReportWriter),
  shared billing filters, order item service info in list responses.
- Web design quote Excel export; activity log export.
- Service attachments with copy-to-invoice; deployment invoice attachments.
- Customer email attachments stored on disk and attached by path.
- Admin password change endpoint; user.fullname backfill migration;
  orders.user_id backfill from logs.
- Disable deploy workflow until CI/CD is set up.
- Ignore stored customer email and service attachment uploads.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

app/Http/Requests/UpdateProfileRequest.php

@@ -15,8 +15,7 @@ class UpdateProfileRequest extends FormRequest
     public function rules(): array
     {
         return [
-            'firstname'  => 'required|string|max:255',
-            'lastname'   => 'required|string|max:255',
+            'fullname'   => 'required|string|min:2|max:255',
             'phone'      => 'nullable|string|max:20',
             'department' => ['nullable', Rule::in(['IT', 'Sale', 'Marketing', 'Customer Service', 'Accounting', 'Management'])],
             'start_date' => 'nullable|date',