CREATE TABLE "sessions" (
  "id" uuid PRIMARY KEY DEFAULT gen_random_uuid() NOT NULL,
  "user_id" uuid NOT NULL REFERENCES "users"("id"),
  "session_token_hash" text NOT NULL,
  "expires_at" timestamp with time zone NOT NULL,
  "last_activity_at" timestamp with time zone DEFAULT now() NOT NULL,
  "ip_address" text,
  "user_agent" text,
  "revoked_at" timestamp with time zone,
  "created_at" timestamp with time zone DEFAULT now() NOT NULL,
  CONSTRAINT "sessions_token_hash_unique" UNIQUE("session_token_hash")
);
CREATE INDEX "sessions_user_id_index" ON "sessions" ("user_id");
CREATE INDEX "sessions_expires_at_index" ON "sessions" ("expires_at");