Three distinct SQL syntax errors caught from worker logs:
1. **upsert_zouit** (bulk_harvest.py:940) — trailing comma after 4326
in ST_Transform(..., 3857), 4326,) → 'syntax error at or near ")"'.
Hit on 8+ quarters in 0108 block (66:41:0108055/61/69/77 etc).
Likely introduced by ruff-format auto-comma on closing paren.
2. **nspd_sync** (nspd_sync.py:120) — `:fetched_at_utc::timestamptz`
psycopg double-colon trap → 'syntax error at or near ":"'.
Crashed legacy on-demand harvest_quarter called from analyze.
3. **job_settings** (job_settings.py:224) — `:extra_config::jsonb`
same double-colon trap in admin settings UPDATE.
All converted to CAST(:x AS type) pattern (psycopg v3 safe).
40 tests still passing.
d445240e6f