CREATE TABLE "password_reset_tokens" (
  "id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
  "user_id" uuid NOT NULL REFERENCES "users"("id"),
  "token_hash" text NOT NULL,
  "expires_at" timestamp with time zone NOT NULL,
  "used_at" timestamp with time zone,
  "created_at" timestamp with time zone DEFAULT now() NOT NULL,
  CONSTRAINT "password_reset_tokens_token_hash_unique" UNIQUE("token_hash")
);
CREATE INDEX "password_reset_tokens_user_id_index" ON "password_reset_tokens" ("user_id");