CREATE TABLE IF NOT EXISTS creator_competitor_share_job (
    id text PRIMARY KEY,
    platform text NOT NULL CHECK (platform IN ('douyin', 'xiaohongshu')),
    share_url text NOT NULL,
    tags text[] NOT NULL DEFAULT '{}',
    status text NOT NULL DEFAULT 'queued' CHECK (status IN ('queued', 'processing', 'succeeded', 'failed')),
    attempts integer NOT NULL DEFAULT 0 CHECK (attempts >= 0 AND attempts <= 3),
    competitor_id text REFERENCES creator_competitor(id) ON DELETE SET NULL,
    failure_reason text NOT NULL DEFAULT '',
    lease_token text NOT NULL DEFAULT '',
    lease_until timestamptz,
    last_attempt_at timestamptz,
    completed_at timestamptz,
    created_at timestamptz NOT NULL DEFAULT now(),
    updated_at timestamptz NOT NULL DEFAULT now()
);
CREATE INDEX IF NOT EXISTS creator_competitor_share_job_due_idx
    ON creator_competitor_share_job (status, lease_until, created_at);