CREATE TABLE IF NOT EXISTS agent_hook_registration (
    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
    session_id UUID NOT NULL REFERENCES agent_session(id) ON DELETE CASCADE,
    hook_type TEXT NOT NULL,
    handler_name TEXT NOT NULL,
    config_json TEXT,
    priority INTEGER NOT NULL DEFAULT 0,
    enabled BOOLEAN NOT NULL DEFAULT true,
    created_at TIMESTAMPTZ NOT NULL DEFAULT now()
);

CREATE INDEX IF NOT EXISTS idx_agent_hook_session
    ON agent_hook_registration(session_id, hook_type);