Drove src/lib/csv.ts to 100% stmts/branch/funcs/lines (was 97.95%/55.55%):
- added a null-fallback row test covering every ?? default (activityName,
userName, insoleType→Kurk, pairCount→2, duration/paused→0) and the null
end-time branch (line 65).
- added CSV-escaping edge tests: commas, embedded quotes, and newlines inside
a field stay inside the quoted cell.
- added formatDuration edge (hours >99 → 100:00:00).
- added a /api/export ordering-by-start-time behavior test and adopted
resetDb per-test isolation in the export suite.
No bugs found; CSV code behaves correctly. sessions.ts /api/export route
already at 100%. Full api suite green (150 tests).
Drives src/routes/sessions.ts and src/lib/work-session.ts to 100%
stmts/branch/funcs/lines (branch was 84.12% / 83.33%).
- sessions.test.ts: added error/edge branch tests — malformed-JSON start
(400), non-numeric id on pause/resume/stop/discard (404), pause/resume of a
no-longer-active session (409), discard missing (404) + already-closed (409),
stop missing (404), and discard ownership scoping (user B → 404).
- work-session.test.ts: mapper unit tests — null insoleType, nullish
pausedSeconds → 0, null durationSeconds/notes, full-field shape with
activity/user opts, and opts defaulting to undefined.
- test/integration/worker-session-lifecycle.test.ts: the anchor lifecycle test
(start→pause→resume→stop→history→export).
No bugs found — the code was correct. The two remaining uncovered branches were
the defensive `row.pausedSeconds ?? 0` guards in resume/stop; pausedSeconds is
NOT NULL DEFAULT 0 in the schema, so the null branch is unreachable via any
route. Annotated both with `/* c8 ignore next -- reason */` (comment only, no
behavior change).
Drives all infra src files to 100% (env.ts, db/client.ts, db/ensure-dir.ts,
db/migrate.ts, db/seed.ts, routes/health.ts).
- env.test.ts: dev defaults when unset, overrides when set (PORT coerced),
CORS_ORIGINS parsing (trim + drop empties) and empty-fallback.
- db.test.ts: runMigrations idempotency; ensureDbDir no-op for non-file URLs
and bare filenames (branch coverage).
- seed.test.ts: production guard — no dev users seeded when NODE_ENV=production.
- c8-ignore the migrate.ts/seed.ts CLI direct-run blocks (unreachable under vitest).
No lifecycle test (infra domain, per plan). No bugs found — infra code correct;
only coverage gaps. All 112 API tests green; typecheck + oxlint clean.
