Two things it could not do, both found trying to preview this release.
It read SELFTEST_GROUPS off os.environ before anything had loaded .env, so
its own documented invocation refused every group unless the variable had
been exported by hand. Fail-closed, so it never posted anywhere wrong -- it
simply never posted at all.
And it always rendered the delta from the *running* build, which is empty
once the bump is committed. Three releases landing together are still one
announcement to a group recorded three versions back, so --seen renders what
that group will actually be shown rather than what the current build would
add.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017w1HZ3cZ7neL3rFdQ6VMBA
