Token Upgrade시 챌린지를 거치도록 변경

src/lib/server/db/schema/token.ts

@@ -16,3 +16,16 @@ export const refreshToken = sqliteTable(
     unq: unique().on(t.userId, t.clientId),
   }),
 );
+
+export const tokenUpgradeChallenge = sqliteTable("token_upgrade_challenge", {
+  id: integer("id").primaryKey(),
+  refreshTokenId: text("refresh_token_id")
+    .notNull()
+    .references(() => refreshToken.id),
+  clientId: integer("client_id")
+    .notNull()
+    .references(() => client.id),
+  answer: text("challenge").notNull().unique(), // Base64
+  allowedIp: text("allowed_ip").notNull(),
+  expiresAt: integer("expires_at", { mode: "timestamp_ms" }).notNull(),
+});