fix folder causing 500 toast when deleted on another machine (#6551)

app/core/src/test/java/stirling/software/SPDF/exception/GlobalExceptionHandlerTest.java

@@ -18,6 +18,7 @@ import org.mockito.Mock;
 import org.mockito.junit.jupiter.MockitoExtension;
 import org.springframework.context.MessageSource;
 import org.springframework.core.env.Environment;
+import org.springframework.http.HttpMethod;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ProblemDetail;
 import org.springframework.http.ResponseEntity;
@@ -27,6 +28,7 @@ import org.springframework.web.bind.MissingServletRequestParameterException;
 import org.springframework.web.multipart.MaxUploadSizeExceededException;
 import org.springframework.web.multipart.support.MissingServletRequestPartException;
 import org.springframework.web.servlet.NoHandlerFoundException;
+import org.springframework.web.servlet.resource.NoResourceFoundException;
 
 import jakarta.servlet.http.HttpServletRequest;
 import jakarta.servlet.http.HttpServletResponse;
@@ -208,6 +210,19 @@ class GlobalExceptionHandlerTest {
         assertEquals(HttpStatus.NOT_FOUND, resp.getStatusCode());
     }
 
+    // ---- NoResourceFoundException ----
+    // Regression guard: was falling through to the 500 catch-all.
+
+    @Test
+    void handleNoResourceFound_returns_404_not_500() {
+        when(request.getMethod()).thenReturn("GET");
+        NoResourceFoundException ex =
+                new NoResourceFoundException(HttpMethod.GET, "/api/v1/storage/folders", "");
+        ResponseEntity<ProblemDetail> resp = handler.handleNoResourceFound(ex, request);
+        assertEquals(HttpStatus.NOT_FOUND, resp.getStatusCode());
+        assertEquals("GET", resp.getBody().getProperties().get("method"));
+    }
+
     // ---- IllegalArgumentException ----
 
     @Test