Two real findings on #833, both fixed:
(1) `isolated_server` closed server's DB connections but left `appstate.meta_db`
and `appstate.audio_effect_mappings` published and pointing at the closed
handles -- a live-looking, dead singleton for any later test. Teardown now
snapshots and restores both slots.
(2) `test_reimporting_server_republishes_the_fresh_singletons` never performed a
second import: it only re-asserted what `test_server_wires_the_seam` already
covers, so it could not detect the very staleness it names. (I introduced
that regression while fixing Codex's CONFIG_DIR isolation finding.) It now
pops `server`, re-imports under a SECOND CONFIG_DIR, and asserts the seam
republishes -- `second_server.meta_db is not first_db` and
`appstate.meta_db is second_server.meta_db`.
Negative-checked both directions: simulating an appstate-OWNED singleton
(configure() only-first-wins) now fails the re-import test, and dropping
server's configure() call still fails exactly the two wiring tests.
NB CodeRabbit's committable suggestion inserted the snapshot above the
fixture docstring, which would have demoted it from __doc__; written by hand
instead.
pytest 2348 passed; the full suite leaves the real ~/.local/share/feedback
untouched.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
