ALTER TABLE reports
    ADD COLUMN assigned_operator_id BIGINT UNSIGNED NULL AFTER area_id,
    ADD CONSTRAINT reports_assigned_operator_fk
        FOREIGN KEY (assigned_operator_id) REFERENCES users(id);

CREATE INDEX reports_user_status_created_idx ON reports(user_id, status, created_at);
CREATE INDEX assignments_report_ended_idx ON assignments(report_id, ended_at);

ALTER TABLE report_photos
    ADD COLUMN original_filename VARCHAR(255) NULL AFTER url,
    ADD COLUMN content_type VARCHAR(100) NULL AFTER original_filename,
    ADD COLUMN size_bytes BIGINT UNSIGNED NULL AFTER content_type;