-- Capture the client's detected UTC offset ("±HH:MM") with each feedback message, so the
-- operator console can show the filed time in the sender's browser-local zone even before that
-- player has ever saved a profile (the account zone defaults to UTC until then). Nullable, so the
-- rows that predate this keep working — additive and backward-compatible, so a backend image
-- rollback stays DB-safe (older code simply ignores the column).

-- +goose Up
ALTER TABLE backend.feedback_messages ADD COLUMN browser_tz text;

-- +goose Down
ALTER TABLE backend.feedback_messages DROP COLUMN browser_tz;