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>

resources/views/filament/tenant/tracking-qr.blade.php

@@ -0,0 +1,48 @@
+@php
+    $url = $wo->trackingUrl();
+    $qrSvg = (new \chillerlan\QRCode\QRCode(new \chillerlan\QRCode\QROptions([
+        'outputType' => \chillerlan\QRCode\QRCode::OUTPUT_MARKUP_SVG,
+        'eccLevel' => \chillerlan\QRCode\QRCode::ECC_M,
+        'scale' => 8,
+        'imageBase64' => false,
+        'addQuietzone' => true,
+    ])))->render($url);
+@endphp
+<div class="space-y-4">
+    <p class="text-sm text-gray-600 dark:text-gray-300">
+        Trimite acest link clientului — vede statusul fișei, ETA și fotografiile fără să se logheze.
+    </p>
+
+    <div class="flex justify-center bg-white rounded-lg p-4 border border-gray-200 dark:border-gray-700">
+        <div style="max-width: 240px;">{!! $qrSvg !!}</div>
+    </div>
+
+    <div class="space-y-2">
+        <label class="block text-xs font-medium text-gray-500 dark:text-gray-400 uppercase tracking-wide">Link</label>
+        <div class="flex gap-2">
+            <input
+                type="text"
+                value="{{ $url }}"
+                readonly
+                onclick="this.select()"
+                class="flex-1 text-sm rounded-md border-gray-300 dark:border-gray-600 dark:bg-gray-800 dark:text-gray-100 font-mono px-3 py-2"
+            >
+            <a
+                href="{{ $url }}"
+                target="_blank"
+                rel="noopener"
+                class="inline-flex items-center px-3 py-2 text-sm rounded-md bg-primary-600 text-white hover:bg-primary-700"
+            >
+                Deschide →
+            </a>
+        </div>
+    </div>
+
+    <div class="flex gap-2">
+        <a
+            href="{{ route('tracking.qr', $wo->tracking_token) }}"
+            download="WO-{{ $wo->number }}-qr.svg"
+            class="text-xs text-primary-600 hover:underline"
+        >Descarcă QR (SVG)</a>
+    </div>
+</div>