-- Migration 145: Add start date to SAG for email-driven case creation flow

ALTER TABLE sag_sager
    ADD COLUMN IF NOT EXISTS start_date DATE;

CREATE INDEX IF NOT EXISTS idx_sag_sager_start_date
    ON sag_sager(start_date)
    WHERE deleted_at IS NULL;

COMMENT ON COLUMN sag_sager.start_date IS 'Planned start date for case execution (used by email-to-case workflow).';