Stage 3 — WO photos + ETA + QR + public tracking page

- HasMedia (Spatie) on WorkOrder with `photos` collection
- eta_at + tracking_token columns; token auto-generated on create
- Public /t/{token} page — tenant-scoped via subdomain, white-label themed
- QR code SVG via chillerlan/php-qrcode (inline modal + download)
- Filament: SpatieMediaLibraryFileUpload + ETA picker + tracking section
- EditWorkOrder header action "Link client (QR)" modal
- Fix: Auditable::dontSubmitEmptyLogs() → dontLogEmptyChanges() (removed in activitylog)
- Tests: TrackingPageTest (4 pass) covering token gen + cross-tenant isolation

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

app/Models/Concerns/Auditable.php

@@ -22,7 +22,7 @@ trait Auditable
         return LogOptions::defaults()
             ->logFillable()
             ->logOnlyDirty()
-            ->dontSubmitEmptyLogs()
+            ->dontLogEmptyChanges()
             ->setDescriptionForEvent(fn (string $event) => match ($event) {
                 'created' => 'creat',
                 'updated' => 'modificat',