feat: Add A6 PDF QR stickers with human-readable order info

Implement QrStickerService to generate both SVG (web) and PDF (print) stickers:

- Generate 32x32mm QR codes using SimpleSoftwareIO
- Create A6 (148mm  105mm) PDF stickers using DomPDF
- Include human-readable info: order number, customer, status, date, tracking
- Store order type (STOCK/CUSTOM) with visual badge
- Add generation timestamp to footer

Create stickers/qr-sticker.blade.php template:
- Two-column layout: info left, QR right
- Styled for A6 landscape printing
- Shows order number, customer, status, date, tracking info
- QR code positioned for easy scanning
- Print-optimized CSS

Update GenerateQrCodeOnOrderCreated listener:
- Now calls QrStickerService::generateSticker()
- Generates both SVG and PDF on OrderCreated event
- Logs paths to both formats

Add OpsController::downloadSticker() endpoint:
- GET /ops/orders/{id}/sticker/download
- Returns PDF with filename QR-{order_number}.pdf
- Requires ops access authorization
- Logs all downloads with user context

Update ops order-detail view:
- Add download button for A6 sticker PDF
- Position next to QR code display
- Link to new sticker download route

routes/web.php

@@ -77,6 +77,7 @@ Route::middleware('auth')->group(function () {
     Route::post('/ops/orders/{order:uuid}/pack', [OpsController::class, 'confirmPacking'])->name('ops.order.pack');
     Route::post('/ops/orders/{order:uuid}/inspection-passed', [OpsController::class, 'markInspectionPassed'])->name('ops.order.inspection-passed');
     Route::post('/ops/orders/{order:uuid}/inspection-failed', [OpsController::class, 'flagInspectionIssue'])->name('ops.order.inspection-failed');
+    Route::get('/ops/orders/{order:uuid}/sticker/download', [OpsController::class, 'downloadSticker'])->name('ops.order.sticker.download');
 });
 
 // QR landing page (public but token-gated)
@@ -94,4 +95,4 @@ Route::get('/font-test', function () {
 
 
 // Test route for invoice generation (remove in production)
-require __DIR__ . '/test-invoice.php';
+require __DIR__ . '/test-invoice.php';