CREATE TABLE subject_voice_agent (
    subject_id uuid PRIMARY KEY REFERENCES subject_profile(id),
    bot_name text NOT NULL UNIQUE,
    bot_id text UNIQUE,
    status text NOT NULL DEFAULT 'PENDING' CHECK (status IN ('PENDING','READY','FAILED')),
    config jsonb NOT NULL DEFAULT '{}',
    agent_config jsonb NOT NULL DEFAULT '{}',
    last_error text NOT NULL DEFAULT '',
    created_at timestamptz NOT NULL DEFAULT now(),
    updated_at timestamptz NOT NULL DEFAULT now()
);
COMMENT ON TABLE subject_voice_agent IS 'One Volcano S2S bot per elder. Provider configuration stays on the server.';