Fix validation build record (guest /tmp was wiped by the validation reboot;
build completion output was captured live during the run — see notes).

Patch applied to guest /usr/src:
  $ cd /usr/src && patch -p1 --dry-run < /tmp/fix.diff   -> both hunks OK
  $ patch -p1 < /tmp/fix.diff                            -> APPLIED
  $ grep UCONSOLE /usr/src/sys/config/X86_64_GENERIC     -> (no matches)

Build+install (nohup, logged to guest /tmp/fixbuild.log):
  $ cd /usr/src && make -j6 nativekernel && make installkernel
  ...
  --------------------------------------------------------------
  >>> Kernel install for X86_64_GENERIC completed on Mon Aug 31 21:28:37 UTC 2026
  --------------------------------------------------------------
  INSTALL-DONE

Patched kernel booted (post-reboot uname):
  DragonFly dfbsd 6.5-DEVELOPMENT DragonFly 6.5-DEVELOPMENT #1: Mon Aug 31 21:24:15 UTC 2026
      root@dfbsd:/usr/obj/usr/src/sys/X86_64_GENERIC  x86_64