-- Author consents captured at submission (owner request, 2026-08-28):
-- originality declaration and copyright assignment to Shodh Sanchayan.
-- Stored per paper with a timestamp so the declaration is evidence, not
-- just a UI gate. Existing papers default to FALSE (pre-consent era).
ALTER TABLE papers
    ADD COLUMN originality_declared BOOLEAN NOT NULL DEFAULT FALSE,
    ADD COLUMN copyright_assigned  BOOLEAN NOT NULL DEFAULT FALSE,
    ADD COLUMN consent_at          TIMESTAMPTZ;