-- Persist homepage tips per user × 时辰 (ECR-adjacent · home R7)

CREATE TABLE IF NOT EXISTS home_daily_tips (
  id uuid PRIMARY KEY DEFAULT gen_random_uuid(),
  user_id uuid NOT NULL REFERENCES users(id),
  shichen_start timestamptz NOT NULL,
  shichen smallint NOT NULL CHECK (shichen BETWEEN 0 AND 11),
  tips jsonb NOT NULL,
  source varchar(16) NOT NULL DEFAULT 'fallback',
  created_at timestamptz NOT NULL DEFAULT now(),
  UNIQUE (user_id, shichen_start)
);
CREATE INDEX IF NOT EXISTS idx_home_daily_tips_user_start
  ON home_daily_tips (user_id, shichen_start DESC);