Nothing in CI built tests/ at all. The packaging workflows and the -Werror job
all configure with BUILD_TEST_SUITE off, which is why the two Catch2 v2 leftovers
fixed in the previous commit sat there breaking the build unnoticed.
Pinned to ubuntu-24.04 rather than ubuntu-latest because the suite needs Catch2
v3 and noble is what packages it.
Runs the binary rather than ctest. catch_discover_tests does not carry Catch2
tags through as ctest labels, so ctest cannot skip the [notCI] cases that want a
reachable database or a listening socket, and zm_font.cpp loads its fixtures by
relative path so the working directory has to be the one the build copied
tests/data into.
Verified with a fresh out-of-source configure and build using the same commands
as the workflow: 144 test cases, 12480 assertions, exit 0.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
