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>

routes/api/admin/system.php

@@ -140,8 +140,10 @@ Route::prefix('activity-logs')
     ->middleware('perm:system-log.manager')
     ->group(function () {
         Route::get('/', 'index');
+        Route::get('export', 'export');
         Route::get('modules', 'modules');
         Route::get('stats', 'stats');
+        Route::delete('/', 'destroy');
         Route::get('{id}', 'show');
     });