CREATE TABLE llm_call_log (
    id              UUID PRIMARY KEY DEFAULT gen_random_uuid(),
    user_id         UUID NOT NULL REFERENCES users(id) ON DELETE CASCADE,
    job_id          UUID NOT NULL,
    call_type       TEXT NOT NULL,
    model           TEXT NOT NULL,
    system_prompt   TEXT NOT NULL DEFAULT '',
    user_prompt     TEXT NOT NULL DEFAULT '',
    response_body   TEXT NOT NULL DEFAULT '',
    duration_ms     INTEGER NOT NULL DEFAULT 0,
    created_at      TIMESTAMPTZ NOT NULL DEFAULT now()
);
CREATE INDEX idx_llm_call_log_job_id ON llm_call_log(job_id);
CREATE INDEX idx_llm_call_log_user_id ON llm_call_log(user_id, created_at);