feat(flow): map SKU + auto-retry consolidated banner

After saving a SKU mapping, check for SKIPPED orders containing that
SKU and show a floating banner with count + "Importa" button. Batch
retries up to 20 orders and shows result feedback.

Backend:
- get_skipped_orders_with_sku() in sqlite_service.py
- GET /api/orders/by-sku/{sku}/pending endpoint
- POST /api/orders/batch-retry endpoint (max 20, sequential)

Frontend:
- Auto-retry banner after quickMap save with batch import button
- Success/error feedback, auto-dismiss after 15s

Cache-bust: shared.js?v=19

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

api/app/routers/sync.py

@@ -494,6 +494,42 @@ async def retry_order(order_number: str):
     return result
 
 
+@router.get("/api/orders/by-sku/{sku}/pending")
+async def get_pending_orders_for_sku(sku: str):
+    """Get SKIPPED orders that contain the given SKU."""
+    order_numbers = await sqlite_service.get_skipped_orders_with_sku(sku)
+    return {"sku": sku, "order_numbers": order_numbers, "count": len(order_numbers)}
+
+
+@router.post("/api/orders/batch-retry")
+async def batch_retry_orders(request: Request):
+    """Batch retry multiple orders."""
+    from ..services import retry_service
+    body = await request.json()
+    order_numbers = body.get("order_numbers", [])
+    if not order_numbers:
+        return {"success": False, "message": "No orders specified"}
+
+    app_settings = await sqlite_service.get_app_settings()
+    results = {"imported": 0, "errors": 0, "messages": []}
+
+    for on in order_numbers[:20]:  # Limit to 20 to avoid timeout
+        result = await retry_service.retry_single_order(str(on), app_settings)
+        if result.get("success"):
+            results["imported"] += 1
+        else:
+            results["errors"] += 1
+            results["messages"].append(f"{on}: {result.get('message', 'Error')}")
+
+    return {
+        "success": results["imported"] > 0,
+        "imported": results["imported"],
+        "errors": results["errors"],
+        "message": f"{results['imported']} importate, {results['errors']} erori" if results["errors"] else f"{results['imported']} importate cu succes",
+        "details": results["messages"][:5],
+    }
+
+
 @router.get("/api/dashboard/orders")
 async def dashboard_orders(page: int = 1, per_page: int = 50,
                            search: str = "", status: str = "all",