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/Support/EmailScenarioRegistry.php

@@ -73,6 +73,14 @@ final class EmailScenarioRegistry
             'label' => 'Hosting đã khởi tạo', 'category' => self::BUSINESS, 'group' => 'SERVICE',
             'required_variables' => ['domain_name'],
         ],
+        'ip_allocated' => [
+            'label' => 'Cấp phát địa chỉ IP', 'category' => self::BUSINESS, 'group' => 'SERVICE',
+            'required_variables' => ['ip_table'],
+        ],
+        'ip_revoked' => [
+            'label' => 'Thu hồi địa chỉ IP', 'category' => self::BUSINESS, 'group' => 'SERVICE',
+            'required_variables' => ['ip_rows'],
+        ],
         'vm_suspended' => [
             'label' => 'VPS bị tạm ngưng', 'category' => self::BUSINESS, 'group' => 'SERVICE',
             'required_variables' => ['vm_name'],