Track 0 items 0a and 0b. The finding has the full account; the two things
that matter for anyone reading the gate afterwards:
gate.sh was taking TAIL's exit code from `ctest ... | tail -15`, so it printed
"GATE ok host-ctest" directly above "2 tests failed out of 59". The same
masking was on the host build and on the shim cross-build. All three now
capture the real status and trim the output afterwards.
The corpus-skip check counted every "unset, skipped" line, two of which are not
corpus tests, so it could never reach zero. It is now scoped to the tests gated
on the corpus, SOTS_DATA_DIR is set so game_design_census actually runs against
it (43 saves, 2728 designs, 0 mismatched -- a test that had been skipping), and
every remaining skip is printed by name so none can be invisible again.
