fix(ci): mark AllocationTests as [HighMemory] to prevent OOM on ubuntu

The Allocate_1GB/2GB/4GB tests were causing OOM kills on ubuntu-latest
runners (which have ~7GB RAM but less available). These tests allocate
actual memory (not broadcast views), so they need to be excluded from CI.

Also removed debug options (--output Detailed --timeout 5m) from workflow.

Author: Nucs

.github/workflows/build-and-release.yml

@@ -54,8 +54,7 @@ jobs:
       run: |
         dotnet run --project test/NumSharp.UnitTest/NumSharp.UnitTest.csproj \
           --configuration Release --no-build --framework net10.0 \
-          -- --treenode-filter '/*/*/*/*[Category!=OpenBugs]&/*/*/*/*[Category!=HighMemory]' \
-          --report-trx --output Detailed --timeout 5m
+          -- --treenode-filter '/*/*/*/*[Category!=OpenBugs]&/*/*/*/*[Category!=HighMemory]' --report-trx
 
     - name: Upload Test Results
       uses: actions/upload-artifact@v4

test/NumSharp.UnitTest/Backends/Unmanaged/AllocationTests.cs

@@ -6,6 +6,12 @@
 
 namespace NumSharp.UnitTest.Backends.Unmanaged
 {
+    /// <summary>
+    /// Tests for large memory allocations.
+    /// Marked as [HighMemory] because they allocate 1-4GB of memory and
+    /// can cause OOM on CI runners (especially ubuntu with limited RAM).
+    /// </summary>
+    [HighMemory]
     public class AllocationTests
     {
         private const long onegb = 1_073_741_824;