Merge commit from fork

* Harden serializer deserialization bounds

* Finalize Unix serializer hardening

Validate object types before parsing and release owned objects on failure.
Enforce nesting limits through shared serialization entry points.

Mirror read/write size limits and reject embedded NULs while preserving
the wire format. Add regression tests for bounds, types, and cleanup.

Validated Linux self-tests, C++03 platform tests, and ASan/UBSan with leak
detection.

Co-authored-by: Damian Rickard <damian@rickard.us>

---------

Co-authored-by: Damian Rickard <damian@rickard.us>
Co-authored-by: Mounir IDRASSI <mounir.idrassi@amcrypto.jp>

src/Core/Core.make

@@ -13,6 +13,7 @@
 OBJS :=
 OBJS += CoreBase.o
 OBJS += CoreException.o
+OBJS += CoreTest.o
 OBJS += FatFormatter.o
 OBJS += HostDevice.o
 OBJS += MountOptions.o