test: full E2E audit + fix CsvImportExport vehicle.brand → make

Audit pass (33 new tests in tests/Feature/Audit/):
- CrmFunnelE2ETest: full Lead→Deal→Appointment→WO→Payment journey,
  covering 5 previously-untested models. Verifies WO.balanceDue updates
  correctly after payments, including refunds (negative amount → balance
  increases).
- WorkOrderTotalsTest: works+parts+subcontract+discount sum correctly,
  cancelled subcontract excluded, deleting lines triggers recalc, status=done
  consumes part reservations into issues, cancelled releases reservations.
- ShopJourneyE2ETest: register→cart→checkout→email confirmation→tracking
  page reachable→admin fulfills→stock drops→warehouse event recorded.
  Also guest checkout still works without account.
- CsvImportExportTest: round-trip, dedup-by-phone, **caught real bug** —
  Vehicle export wrote $row->brand (no such property) and import set
  'brand' => row['brand'] in Vehicle::create (column is `make`). Fix
  applied to both paths.
- TenantBackupServiceTest: zip contains valid manifest with counts +
  data/*.json per model + works embedded with WorkOrder.
- WorkOrderPdfServiceTest: generated PDF starts with %PDF, includes WO data,
  non-trivial size, handles empty WO.
- PayrollCalculatorTest: base + works_pct + parts_pct + bonus - fine -
  advance, scoped to user + period.
- NotificationFallbackTest: Telegram wins when chat_id present, falls back
  to email when not, returns false when neither, tenant disable flag stops
  both.
- AiProvidersCrossCheckTest: OpenAI request shape, Gemini URL with model,
  no-key friendly message, tenant model override propagates into HTTP body.
- SettingsPersistenceTest: 25-key settings JSON round-trips, partial update
  via array_replace_recursive preserves other keys.
- CompanyProvisionerTest: suspend / reactivate / archive behavior.

Bug fixed: CsvImportExport used `brand` on Vehicle which has column `make`.
The export silently emitted empty values, the import silently dropped the
brand. Now both paths use `make`.

Full suite: 173 passed (468 assertions). 0 failed.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

app/Services/CsvImportExport.php

@@ -47,7 +47,7 @@ class CsvImportExport
             Vehicle::with('client:id,phone')->orderBy('plate')->chunk(500, function ($rows) use ($out) {
                 foreach ($rows as $row) {
                     fputcsv($out, [
-                        $row->plate, $row->vin, $row->brand, $row->model, $row->year,
+                        $row->plate, $row->vin, $row->make, $row->model, $row->year,
                         $row->engine, $row->gearbox, $row->fuel, $row->mileage,
                         $row->color, $row->notes, $row->client?->phone,
                     ]);
@@ -108,7 +108,8 @@ class CsvImportExport
                 'client_id' => $client->id,
                 'plate' => $row['plate'],
                 'vin' => $row['vin'] ?? null,
-                'brand' => $row['brand'] ?? null,
+                // CSV header keeps the user-friendly "brand" name, but the column is `make`.
+                'make' => $row['brand'] ?? null,
                 'model' => $row['model'] ?? null,
                 'year' => (int) ($row['year'] ?? 0) ?: null,
                 'engine' => $row['engine'] ?? null,