Root cause of fake connections in Usage (zed-live-*@example.com,
guard-*@example.com, zed "Account N", kimchi-nope): route-level tests
(zed-live-models, zed-native-auth) call createProviderConnection, which
persists to $DATA_DIR/db/data.sqlite. With DATA_DIR unset — the default
for `npx vitest run` — that resolved to the user's real ~/.9router DB,
appending test rows on every run. Both files documented "RUN WITH AN
ISOLATED DB" but never enforced it.
Add tests/setup/isolateDataDir.js (wired via vitest setupFiles) that
points DATA_DIR at a throwaway temp dir before src/lib/dataDir.js is
imported. Opt out with RUN_REAL=1 or an explicit DATA_DIR (used by the
*.real.test.js suites that read live credentials).
Verified: a full suite run now leaves the real DB byte-count unchanged;
new guard test tests/unit/test-data-dir-isolation.test.js locks it in.
MUH. IQRAM BAHRING
9c37af90a9