feat(payment): support user-bound seven-discount offers

e2e/fixtures/api/chat.ts

@@ -61,7 +61,21 @@ export async function registerChatMocks(page: Page, options: ChatMockOptions, st
       await route.fulfill({ status: 401, json: { message: "expired" } });
       return;
     }
-    const response = message.includes("private album offer test")
+    const response = message.includes("discount offer test")
+      ? {
+          ...chatSendResponse,
+          reply: "I know you're thinking carefully about the price.",
+          messageId: "discount-action-message",
+          commercialAction: {
+            actionId: "13ec8a10-58d7-4d24-b66b-8db5699a1aa8",
+            type: "discountOffer",
+            copy: "Want me to ask for my best private offer?",
+            ctaLabel: "Yes, ask for me",
+            target: "discountConsent",
+            ruleId: "discount_after_price_objection",
+          },
+        }
+      : message.includes("private album offer test")
       ? {
           ...chatSendResponse,
           reply: "You always know how to make me smile.",

e2e/fixtures/api/payment.ts

@@ -4,6 +4,16 @@ import { apiEnvelope } from "../data/common";
 import { createPaymentOrderResponse, paidPaymentOrderStatusResponse, paymentPlansResponse, tipPaymentPlansResponse, vipStatusResponse } from "../data/payment";
 
 export async function registerPaymentMocks(page: Page) {
+  await page.route("**/api/payment/commercial-offers/*/accept", async (route) => route.fulfill({ json: apiEnvelope({
+    commercialOfferId: "13ec8a10-58d7-4d24-b66b-8db5699a1aa8",
+    planId: "vip_annual",
+    subscriptionType: "vip",
+    discountPercent: 30,
+    pricePercent: 70,
+    expiresAt: "2026-07-24T08:00:00+00:00",
+    message: "I got it for you.",
+    promotionType: "commercial_seven_discount",
+  }) }));
   await page.route("**/api/payment/plans**", async (route) => route.fulfill({ json: apiEnvelope(paymentPlansResponse) }));
   await page.route("**/api/payment/tip-plans**", async (route) => route.fulfill({ json: apiEnvelope(tipPaymentPlansResponse) }));
   await page.route("**/api/payment/create-order", async (route) => route.fulfill({ json: apiEnvelope(createPaymentOrderResponse) }));

e2e/specs/mock/chat/commercial-action-navigation.spec.ts

@@ -29,3 +29,21 @@ test("renders a backend commercial action and opens the private zone", async ({
 
   await expect(page).toHaveURL(/\/characters\/elio\/private-zone$/);
 });
+
+test("asks for consent before opening a user-bound discount plan", async ({
+  page,
+}) => {
+  await enterChatFromSplash(page);
+
+  const input = page.getByRole("textbox", { name: "Message" });
+  await input.fill("discount offer test");
+  await input.press("Enter");
+
+  const offer = page.getByLabel("Yes, ask for me");
+  await expect(offer).toContainText("Want me to ask for my best private offer?");
+  await offer.getByRole("button", { name: "Yes, ask for me" }).click();
+
+  await expect(page).toHaveURL(
+    /\/subscription\?type=vip.*planId=vip_annual.*commercialOfferId=13ec8a10/,
+  );
+});

src/app/_hooks/use-payment-route-flow.ts

@@ -22,6 +22,7 @@ export interface UsePaymentRouteFlowInput {
   characterId?: string;
   initialCategory?: string | null;
   initialPlanId?: string | null;
+  commercialOfferId?: string | null;
 }
 
 export interface PaymentRouteFlow {
@@ -41,6 +42,7 @@ export function usePaymentRouteFlow({
   characterId,
   initialCategory = null,
   initialPlanId = null,
+  commercialOfferId = null,
 }: UsePaymentRouteFlowInput): PaymentRouteFlow {
   const payment = usePaymentState();
   const paymentDispatch = usePaymentDispatch();
@@ -50,6 +52,7 @@ export function usePaymentRouteFlow({
     characterId ?? "",
     initialCategory ?? "",
     initialPlanId ?? "",
+    commercialOfferId ?? "",
   ].join(":");
 
   usePendingPaymentOrderLifecycle({
@@ -69,11 +72,13 @@ export function usePaymentRouteFlow({
       ...(characterId ? { characterId } : {}),
       ...(initialCategory ? { category: initialCategory } : {}),
       ...(initialPlanId ? { planId: initialPlanId } : {}),
+      ...(commercialOfferId ? { commercialOfferId } : {}),
     });
   }, [
     catalog,
     catalogKey,
     characterId,
+    commercialOfferId,
     initialCategory,
     initialPlanId,
     initialPayChannel,

src/app/chat/chat-screen.tsx

@@ -17,8 +17,9 @@ import { useCharacterCatalog } from "@/providers/character-catalog-provider";
 import { clearPendingChatNavigation } from "@/lib/navigation/chat_unlock_session";
 import { buildGlobalPageUrl } from "@/router/global-route-context";
 import { resolveAuthenticatedNavigation } from "@/router/navigation-resolver";
-import { getCharacterRoutes, ROUTES } from "@/router/routes";
+import { getCharacterRoutes, ROUTE_BUILDERS, ROUTES } from "@/router/routes";
 import type { CommercialAction } from "@/data/schemas/chat";
+import { paymentApi } from "@/data/services/api";
 import { behaviorAnalytics } from "@/lib/analytics";
 
 import { MobileShell } from "@/app/_components/core";
@@ -252,7 +253,7 @@ export function ChatScreen() {
     router.push(characterRoutes.privateZone);
   }
 
-  function handleCommercialAction(action: CommercialAction): void {
+  async function handleCommercialAction(action: CommercialAction): Promise<void> {
     behaviorAnalytics.elementClick(
       "chat.commercial_action.open",
       action.ctaLabel,
@@ -264,6 +265,29 @@ export function ChatScreen() {
         target: action.target,
       },
     );
+    if (action.target === "discountConsent") {
+      const offer = await paymentApi.acceptCommercialOffer(action.actionId);
+      behaviorAnalytics.elementClick(
+        "chat.commercial_action.accepted",
+        action.ctaLabel,
+        {
+          actionId: action.actionId,
+          actionType: action.type,
+          characterId: state.characterId,
+          planId: offer.planId,
+          discountPercent: offer.discountPercent,
+        },
+      );
+      router.push(
+        ROUTE_BUILDERS.subscription(offer.subscriptionType, {
+          sourceCharacterSlug: character.slug,
+          returnTo: "chat",
+          planId: offer.planId,
+          commercialOfferId: offer.commercialOfferId,
+        }),
+      );
+      return;
+    }
     router.push(
       action.target === "giftCatalog"
         ? characterRoutes.tip

src/app/chat/components/__tests__/commercial-action-card.test.tsx

@@ -23,4 +23,23 @@ describe("CommercialActionCard", () => {
     expect(html).toContain("Open private zone");
     expect(html).toContain('aria-label="Dismiss offer"');
   });
+
+  it("renders a consent-first discount action without a checkout URL", () => {
+    const html = renderToStaticMarkup(
+      <CommercialActionCard
+        action={{
+          actionId: "offer-1",
+          type: "discountOffer",
+          copy: "Want me to ask for my best private offer?",
+          ctaLabel: "Yes, ask for me",
+          target: "discountConsent",
+          ruleId: "discount_after_price_objection",
+        }}
+      />,
+    );
+
+    expect(html).toContain('data-commercial-action="discountOffer"');
+    expect(html).toContain("Yes, ask for me");
+    expect(html).not.toContain("/subscription");
+  });
 });

src/app/chat/components/chat-area.module.css

@@ -189,6 +189,26 @@
   overflow-wrap: anywhere;
 }
 
+.commercialActionButton:disabled {
+  cursor: wait;
+  opacity: 0.72;
+}
+
+.commercialActionError {
+  margin: -4px 0 10px;
+  color: #ffb4ab;
+  font-size: 12px;
+  line-height: 1.4;
+}
+
+.commercialActionSpinner {
+  animation: commercial-action-spin 0.8s linear infinite;
+}
+
+@keyframes commercial-action-spin {
+  to { transform: rotate(360deg); }
+}
+
 .bubbleAi {
   max-width: var(--chat-bubble-max-width, 75%);
   background: var(--color-bubble-ai, rgba(255, 255, 255, 0.08));

src/app/chat/components/commercial-action-card.tsx

@@ -1,7 +1,7 @@
 "use client";
 
 import { useState } from "react";
-import { ArrowRight, Gift, Images, X } from "lucide-react";
+import { ArrowRight, BadgePercent, Gift, Images, LoaderCircle, X } from "lucide-react";
 
 import type { CommercialAction } from "@/data/schemas/chat";
 
@@ -9,7 +9,7 @@ import styles from "./chat-area.module.css";
 
 export interface CommercialActionCardProps {
   action: CommercialAction;
-  onActivate?: (action: CommercialAction) => void;
+  onActivate?: (action: CommercialAction) => void | Promise<void>;
   onDismiss?: (action: CommercialAction) => void;
 }
 
@@ -19,9 +19,16 @@ export function CommercialActionCard({
   onDismiss,
 }: CommercialActionCardProps) {
   const [dismissed, setDismissed] = useState(false);
+  const [activating, setActivating] = useState(false);
+  const [activationError, setActivationError] = useState<string | null>(null);
   if (dismissed) return null;
 
-  const Icon = action.type === "giftOffer" ? Gift : Images;
+  const Icon =
+    action.type === "giftOffer"
+      ? Gift
+      : action.type === "discountOffer"
+        ? BadgePercent
+        : Images;
 
   return (
     <aside
@@ -45,13 +52,29 @@ export function CommercialActionCard({
         </button>
       </div>
       <p className={styles.commercialActionCopy}>{action.copy}</p>
+      {activationError ? (
+        <p className={styles.commercialActionError} role="alert">
+          {activationError}
+        </p>
+      ) : null}
       <button
         type="button"
         className={styles.commercialActionButton}
-        onClick={() => onActivate?.(action)}
+        disabled={activating}
+        onClick={() => {
+          setActivating(true);
+          setActivationError(null);
+          void Promise.resolve(onActivate?.(action))
+            .catch(() => setActivationError("This private offer is unavailable right now. Please try again."))
+            .finally(() => setActivating(false));
+        }}
       >
         <span>{action.ctaLabel}</span>
+        {activating ? (
+          <LoaderCircle className={styles.commercialActionSpinner} size={17} aria-hidden="true" />
+        ) : (
           <ArrowRight size={17} aria-hidden="true" />
+        )}
       </button>
     </aside>
   );

src/app/subscription/page.tsx

@@ -32,6 +32,10 @@ export default async function SubscriptionPage({
   const sourceCharacterSlug =
     getCharacterBySlug(getFirstPaymentSearchParam(query.character))?.slug ??
     DEFAULT_CHARACTER_SLUG;
+  const initialPlanId = getFirstPaymentSearchParam(query.planId);
+  const commercialOfferId = getFirstPaymentSearchParam(
+    query.commercialOfferId,
+  );
   const analyticsContext = parsePaymentAnalyticsContext({
     entryPoint: getFirstPaymentSearchParam(
       query[PAYMENT_ANALYTICS_ENTRY_PARAM],
@@ -50,6 +54,8 @@ export default async function SubscriptionPage({
       initialPayChannel={paymentReturn.initialPayChannel}
       analyticsContext={analyticsContext}
       sourceCharacterSlug={sourceCharacterSlug}
+      initialPlanId={initialPlanId}
+      commercialOfferId={commercialOfferId}
     />
   );
 }

src/app/subscription/subscription-screen.tsx

@@ -45,6 +45,8 @@ export interface SubscriptionScreenProps {
   initialPayChannel?: PayChannel | null;
   analyticsContext?: PaymentAnalyticsContext;
   sourceCharacterSlug?: string;
+  initialPlanId?: string | null;
+  commercialOfferId?: string | null;
 }
 
 export function SubscriptionScreen({
@@ -54,6 +56,8 @@ export function SubscriptionScreen({
   initialPayChannel = null,
   analyticsContext: providedAnalyticsContext,
   sourceCharacterSlug = DEFAULT_CHARACTER_SLUG,
+  initialPlanId = null,
+  commercialOfferId = null,
 }: SubscriptionScreenProps) {
   const userState = useUserState();
   const hasHydrated = useHasHydrated();
@@ -77,6 +81,8 @@ export function SubscriptionScreen({
     returnTo,
     sourceCharacterSlug,
     initialPayChannel: paymentMethodConfig.initialPayChannel,
+    initialPlanId,
+    commercialOfferId,
   });
   const canSubscribeVip = subscriptionType === "vip";
   const analyticsContext =
@@ -214,6 +220,22 @@ export function SubscriptionScreen({
           </section>
         ) : null}
 
+        {payment.commercialOffer && !firstRechargeOffer ? (
+          <section
+            className={styles.firstRechargeBanner}
+            aria-label="Elio private offer"
+          >
+            <span className={styles.firstRechargeBadge}>Private offer</span>
+            <div className={styles.firstRechargeCopy}>
+              <h2 className={styles.firstRechargeTitle}>Elio got this price for you</h2>
+              <p className={styles.firstRechargeSubtitle}>
+                {payment.commercialOffer.message ||
+                  `Your ${payment.commercialOffer.discountPercent}% discount is already applied below.`}
+              </p>
+            </div>
+          </section>
+        ) : null}
+
         <div className={styles.offerStack}>
           {canSubscribeVip ? (
             <SubscriptionVipOfferSection

src/app/subscription/use-subscription-payment-flow.ts

@@ -20,6 +20,8 @@ export interface UseSubscriptionPaymentFlowInput {
   returnTo: SubscriptionReturnTo;
   initialPayChannel: PayChannel;
   sourceCharacterSlug?: string;
+  initialPlanId?: string | null;
+  commercialOfferId?: string | null;
 }
 
 export function useSubscriptionPaymentFlow({
@@ -28,12 +30,16 @@ export function useSubscriptionPaymentFlow({
   returnTo,
   initialPayChannel,
   sourceCharacterSlug = DEFAULT_CHARACTER_SLUG,
+  initialPlanId = null,
+  commercialOfferId = null,
 }: UseSubscriptionPaymentFlowInput) {
   const router = useRouter();
   const { payment, paymentDispatch } = usePaymentRouteFlow({
     initialPayChannel,
     paymentType: subscriptionType,
     shouldResumePendingOrder,
+    initialPlanId,
+    commercialOfferId,
   });
   const successDialogShownOrderRef = useRef<string | null>(null);
   const [showPaymentSuccessDialog, setShowPaymentSuccessDialog] =

src/app/tip/__tests__/tip-screen.checkout.test.tsx

@@ -358,6 +358,7 @@ function makePaymentState(
     giftProducts: [giftProduct],
     selectedGiftCategory: giftCategory.category,
     isFirstRecharge: false,
+    commercialOffer: null,
     selectedPlanId: giftPlan.planId,
     payChannel: "stripe",
     autoRenew: false,

src/data/repositories/interfaces/ipayment_repository.ts

@@ -13,7 +13,7 @@ import type { Result } from "@/utils/result";
 
 export interface IPaymentRepository {
   /** 获取套餐列表。 */
-  getPlans(): Promise<Result<PaymentPlansResponse>>;
+  getPlans(commercialOfferId?: string): Promise<Result<PaymentPlansResponse>>;
 
   /** 获取本地缓存套餐列表。 */
   getCachedPlans(): Promise<Result<PaymentPlansResponse | null>>;
@@ -30,6 +30,7 @@ export interface IPaymentRepository {
     payChannel: PayChannel,
     autoRenew: boolean,
     recipientCharacterId?: string,
+    commercialOfferId?: string,
   ): Promise<Result<CreatePaymentOrderResponse>>;
 
   /** 查询支付订单状态。 */

src/data/repositories/payment_repository.ts

@@ -24,10 +24,10 @@ export class PaymentRepository implements IPaymentRepository {
   constructor(private readonly api: PaymentApi) {}
 
   /** 获取套餐列表。 */
-  async getPlans(): Promise<Result<PaymentPlansResponse>> {
+  async getPlans(commercialOfferId?: string): Promise<Result<PaymentPlansResponse>> {
     return Result.wrap(async () => {
-      const response = await this.api.getPlans();
-      await PaymentPlansStorage.setPlans(response);
+      const response = await this.api.getPlans(commercialOfferId);
+      if (!commercialOfferId) await PaymentPlansStorage.setPlans(response);
       return response;
     });
   }
@@ -62,12 +62,14 @@ export class PaymentRepository implements IPaymentRepository {
     payChannel: PayChannel,
     autoRenew: boolean,
     recipientCharacterId?: string,
+    commercialOfferId?: string,
   ): Promise<Result<CreatePaymentOrderResponse>> {
     const request = CreatePaymentOrderRequestSchema.parse({
       planId,
       payChannel,
       autoRenew,
       ...(recipientCharacterId ? { recipientCharacterId } : {}),
+      ...(commercialOfferId ? { commercialOfferId } : {}),
     });
     return Result.wrap(() => this.api.createOrder(request));
   }

src/data/schemas/chat/response/chat_send_response.ts

@@ -15,10 +15,10 @@ import { ChatImageSchema, ChatLockDetailSchema } from "../chat_payloads";
 export const CommercialActionSchema = z
   .object({
     actionId: z.string().min(1),
-    type: z.enum(["giftOffer", "privateAlbumOffer"]),
+    type: z.enum(["giftOffer", "privateAlbumOffer", "discountOffer"]),
     copy: z.string().min(1),
     ctaLabel: z.string().min(1),
-    target: z.enum(["giftCatalog", "privateZone"]),
+    target: z.enum(["giftCatalog", "privateZone", "discountConsent"]),
     ruleId: z.string().min(1),
   })
   .readonly();

src/data/schemas/payment/__tests__/payment_plan.test.ts

@@ -75,6 +75,8 @@ describe("PaymentPlan", () => {
       mostPopular: true,
       firstRechargeDiscountPercent: null,
       promotionType: null,
+      commercialOfferId: null,
+      commercialDiscountPercent: null,
     });
   });
 
@@ -190,6 +192,45 @@ describe("PaymentPlansResponse", () => {
       discountPercent: 0,
     });
   });
+
+  it("parses one user-bound commercial offer and its discounted plan", () => {
+    const response = PaymentPlansResponseSchema.parse({
+      commercialOffer: {
+        enabled: true,
+        commercialOfferId: "offer-1",
+        planId: "vip_annual",
+        discountPercent: 30,
+        pricePercent: 70,
+        expiresAt: "2026-07-24T08:00:00+00:00",
+        triggerReason: "price_objection",
+        message: "I got this private price for you.",
+      },
+      plans: [
+        {
+          planId: "vip_annual",
+          planName: "Annual VIP",
+          orderType: "vip_annual",
+          vipDays: 365,
+          dolAmount: null,
+          creditBalance: 9000,
+          amountCents: 12593,
+          originalAmountCents: 17990,
+          dailyPriceCents: 34,
+          currency: "USD",
+          promotionType: "commercial_seven_discount",
+          commercialOfferId: "offer-1",
+          commercialDiscountPercent: 30,
+        },
+      ],
+    });
+
+    expect(response.commercialOffer?.commercialOfferId).toBe("offer-1");
+    expect(response.plans[0]).toMatchObject({
+      planId: "vip_annual",
+      commercialOfferId: "offer-1",
+      commercialDiscountPercent: 30,
+    });
+  });
 });
 
 describe("GiftProductsResponse", () => {

src/data/schemas/payment/index.ts

@@ -8,6 +8,7 @@ export * from "./gift_product";
 export * from "./request/create_payment_order_request";
 export * from "./request/tip_message_request";
 export * from "./response/create_payment_order_response";
+export * from "./response/commercial_offer_response";
 export * from "./response/gift_products_response";
 export * from "./response/payment_order_status_response";
 export * from "./response/payment_plans_response";

src/data/schemas/payment/payment_plan.ts

@@ -25,6 +25,8 @@ export const PaymentPlanSchema = z
     mostPopular: booleanOrFalse,
     firstRechargeDiscountPercent: numberOrNull,
     promotionType: stringOrNull,
+    commercialOfferId: stringOrNull,
+    commercialDiscountPercent: numberOrNull,
   })
   .readonly();
 

src/data/schemas/payment/request/create_payment_order_request.ts

@@ -11,6 +11,7 @@ export const CreatePaymentOrderRequestSchema = z
     payChannel: PayChannelSchema,
     autoRenew: z.boolean(),
     recipientCharacterId: z.string().min(1).optional(),
+    commercialOfferId: z.string().min(1).optional(),
   })
   .readonly();
 

src/data/schemas/payment/response/commercial_offer_response.ts

@@ -0,0 +1,18 @@
+import { z } from "zod";
+
+export const CommercialOfferResponseSchema = z
+  .object({
+    commercialOfferId: z.string().min(1),
+    planId: z.string().min(1),
+    subscriptionType: z.enum(["vip", "topup"]),
+    discountPercent: z.number().int().min(0).max(100),
+    pricePercent: z.number().int().min(0).max(100),
+    expiresAt: z.string().min(1),
+    message: z.string().min(1),
+    promotionType: z.string().min(1),
+  })
+  .readonly();
+
+export type CommercialOfferResponse = z.output<
+  typeof CommercialOfferResponseSchema
+>;

src/data/schemas/payment/response/index.ts

@@ -3,6 +3,7 @@
  */
 
 export * from "./create_payment_order_response";
+export * from "./commercial_offer_response";
 export * from "./gift_products_response";
 export * from "./payment_order_status_response";
 export * from "./payment_plans_response";

src/data/schemas/payment/response/payment_plans_response.ts

@@ -20,10 +20,24 @@ export const FirstRechargeOfferSchema = z
   })
   .readonly();
 
+export const CommercialOfferSummarySchema = z
+  .object({
+    enabled: booleanOrFalse,
+    commercialOfferId: z.string().min(1),
+    planId: z.string().min(1),
+    discountPercent: numberOrZero,
+    pricePercent: numberOrZero,
+    expiresAt: z.string().min(1),
+    triggerReason: stringOrEmpty,
+    message: stringOrEmpty,
+  })
+  .readonly();
+
 export const PaymentPlansResponseSchema = z
   .object({
     isFirstRecharge: booleanOrFalse,
     firstRechargeOffer: schemaOrNull(FirstRechargeOfferSchema),
+    commercialOffer: schemaOrNull(CommercialOfferSummarySchema),
     plans: arrayOrEmpty(PaymentPlanSchema),
   })
   .readonly();
@@ -35,7 +49,9 @@ export type PaymentPlansResponseData = z.output<
   typeof PaymentPlansResponseSchema
 >;
 export type FirstRechargeOfferData = z.output<typeof FirstRechargeOfferSchema>;
+export type CommercialOfferSummaryData = z.output<typeof CommercialOfferSummarySchema>;
 
 export type FirstRechargeOffer = FirstRechargeOfferData;
+export type CommercialOfferSummary = CommercialOfferSummaryData;
 
 export type PaymentPlansResponse = PaymentPlansResponseData;

src/data/services/api/__tests__/api_path.test.ts

@@ -6,7 +6,7 @@ import { ApiPath } from "../api_path";
 describe("ApiPath contract source", () => {
   it("uses the shared contract path for every static operation", () => {
     const staticOperations = Object.entries(apiContract).filter(
-      ([operationId]) => operationId !== "privateZoneAlbumUnlock",
+      ([, operation]) => !operation.path.includes("{"),
     );
 
     for (const [operationId, operation] of staticOperations) {
@@ -21,4 +21,10 @@ describe("ApiPath contract source", () => {
       "/api/private-zone/albums/album%2Fid%201/unlock",
     );
   });
+
+  it("fills and encodes the commercial offer path parameter", () => {
+    expect(ApiPath.paymentCommercialOfferAccept("offer/id 1")).toBe(
+      "/api/payment/commercial-offers/offer%2Fid%201/accept",
+    );
+  });
 });

src/data/services/api/__tests__/payment_api.test.ts

@@ -81,4 +81,38 @@ describe("PaymentApi", () => {
     });
     expect(response.message).toBe("Thank you for the thoughtful gift.");
   });
+
+  it("accepts a server-issued offer before opening the subscription page", async () => {
+    httpClientMock.mockResolvedValue({
+      success: true,
+      data: {
+        commercialOfferId: "offer-1",
+        planId: "vip_annual",
+        subscriptionType: "vip",
+        discountPercent: 30,
+        pricePercent: 70,
+        expiresAt: "2026-07-24T08:00:00+00:00",
+        message: "I got it for you.",
+        promotionType: "commercial_seven_discount",
+      },
+    });
+
+    const response = await new PaymentApi().acceptCommercialOffer("offer-1");
+
+    expect(httpClientMock).toHaveBeenCalledWith(
+      "/api/payment/commercial-offers/offer-1/accept",
+      { method: "POST" },
+    );
+    expect(response.discountPercent).toBe(30);
+  });
+
+  it("requests an offer-scoped plan catalog without changing the public call", async () => {
+    httpClientMock.mockResolvedValue({ success: true, data: { plans: [] } });
+
+    await new PaymentApi().getPlans("offer-1");
+
+    expect(httpClientMock).toHaveBeenCalledWith("/api/payment/plans", {
+      query: { commercialOfferId: "offer-1" },
+    });
+  });
 });

src/data/services/api/api_contract.json

@@ -17,6 +17,7 @@
   "paymentPlans": { "method": "get", "path": "/api/payment/plans" },
   "paymentGiftProducts": { "method": "get", "path": "/api/payment/gift-products" },
   "paymentTipMessage": { "method": "post", "path": "/api/payment/tip-message" },
+  "paymentCommercialOfferAccept": { "method": "post", "path": "/api/payment/commercial-offers/{offerId}/accept" },
   "chatSend": { "method": "post", "path": "/api/chat/send" },
   "chatOpeningMessage": { "method": "post", "path": "/api/chat/opening-message" },
   "chatHistory": { "method": "get", "path": "/api/chat/history" },

src/data/services/api/api_path.ts

@@ -66,6 +66,14 @@ export class ApiPath {
   /** 获取已支付礼物订单的角色感谢文案 */
   static readonly paymentTipMessage = apiContract.paymentTipMessage.path;
 
+  /** 接受角色发放的用户专属优惠 */
+  static paymentCommercialOfferAccept(offerId: string): string {
+    return apiContract.paymentCommercialOfferAccept.path.replace(
+      "{offerId}",
+      encodeURIComponent(offerId),
+    );
+  }
+
   // ============ 聊天相关 ============
   /** 发送消息 */
   static readonly chatSend = apiContract.chatSend.path;

src/data/services/api/payment_api.ts

@@ -7,6 +7,8 @@ import {
   CreatePaymentOrderRequest,
   CreatePaymentOrderResponse,
   CreatePaymentOrderResponseSchema,
+  CommercialOfferResponse,
+  CommercialOfferResponseSchema,
   GiftProductsResponse,
   GiftProductsResponseSchema,
   PaymentOrderStatusResponse,
@@ -24,13 +26,26 @@ import { ApiEnvelope, unwrap } from "./response_helper";
 
 export class PaymentApi {
   /** 获取 VIP 与 Top-up 套餐列表。 */
-  async getPlans(): Promise<PaymentPlansResponse> {
-    const env = await httpClient<ApiEnvelope<unknown>>(ApiPath.paymentPlans);
+  async getPlans(commercialOfferId?: string): Promise<PaymentPlansResponse> {
+    const env = await httpClient<ApiEnvelope<unknown>>(ApiPath.paymentPlans, {
+      ...(commercialOfferId ? { query: { commercialOfferId } } : {}),
+    });
     return PaymentPlansResponseSchema.parse(
       unwrap(env) as Record<string, unknown>,
     );
   }
 
+  /** 用户确认后激活一份后端签发的专属优惠。 */
+  async acceptCommercialOffer(offerId: string): Promise<CommercialOfferResponse> {
+    const env = await httpClient<ApiEnvelope<unknown>>(
+      ApiPath.paymentCommercialOfferAccept(offerId),
+      { method: "POST" },
+    );
+    return CommercialOfferResponseSchema.parse(
+      unwrap(env) as Record<string, unknown>,
+    );
+  }
+
   /** 一次获取当前角色的完整礼物目录。 */
   async getGiftProducts(characterId: string): Promise<GiftProductsResponse> {
     const env = await httpClient<ApiEnvelope<unknown>>(

src/router/__tests__/navigation-resolver.test.ts

@@ -66,6 +66,19 @@ describe("navigation resolver", () => {
     );
   });
 
+  it("keeps the user-bound offer and server-selected plan in the subscription URL", () => {
+    expect(
+      ROUTE_BUILDERS.subscription("vip", {
+        returnTo: "chat",
+        sourceCharacterSlug: "elio",
+        planId: "vip_annual",
+        commercialOfferId: "offer-1",
+      }),
+    ).toBe(
+      "/subscription?type=vip&returnTo=chat&character=elio&planId=vip_annual&commercialOfferId=offer-1",
+    );
+  });
+
   it("allows not logged in users to enter chat for guest bootstrap", () => {
     expect(
       resolveRouteGuardRedirect({

src/router/routes.ts

@@ -82,6 +82,8 @@ export const ROUTE_BUILDERS = {
       returnTo?: Exclude<AppSubscriptionReturnTo, null>;
       sourceCharacterSlug?: string;
       analytics?: PaymentAnalyticsContext;
+      planId?: string;
+      commercialOfferId?: string;
     } = {},
   ): `/subscription?${string}` => {
     const params = new URLSearchParams({ type });
@@ -90,6 +92,10 @@ export const ROUTE_BUILDERS = {
     if (options.sourceCharacterSlug) {
       params.set("character", options.sourceCharacterSlug);
     }
+    if (options.planId) params.set("planId", options.planId);
+    if (options.commercialOfferId) {
+      params.set("commercialOfferId", options.commercialOfferId);
+    }
     if (options.analytics) {
       params.set(
         PAYMENT_ANALYTICS_ENTRY_PARAM,

src/stores/payment/__tests__/payment-machine.test-utils.ts

@@ -19,6 +19,7 @@ import type { PaymentPlanCatalog } from "@/stores/payment/payment-state";
 
 export interface PaymentPlansActorInput {
   catalog: PaymentPlanCatalog;
+  commercialOfferId?: string | null;
 }
 
 export interface CreateOrderInput {
@@ -26,6 +27,7 @@ export interface CreateOrderInput {
   payChannel: PayChannel;
   autoRenew: boolean;
   recipientCharacterId?: string;
+  commercialOfferId?: string;
 }
 
 export type CreateOrderSpy = (input: CreateOrderInput) => void;

src/stores/payment/__tests__/payment-order-flow.test.ts

@@ -81,6 +81,30 @@ describe("payment order flow", () => {
     actor.stop();
   });
 
+  it("carries the server-issued commercial offer into order creation", async () => {
+    const createOrderSpy = vi.fn<CreateOrderSpy>();
+    const actor = createActor(
+      createTestPaymentMachine({ createOrderSpy }),
+    ).start();
+    actor.send({
+      type: "PaymentInit",
+      planId: "vip_monthly",
+      commercialOfferId: "offer-user-bound-1",
+    });
+    await waitFor(actor, (snapshot) => snapshot.matches("ready"));
+
+    actor.send({ type: "PaymentCreateOrderSubmitted" });
+    await waitFor(actor, (snapshot) => snapshot.matches("paid"));
+
+    expect(createOrderSpy).toHaveBeenCalledWith({
+      planId: "vip_monthly",
+      payChannel: "stripe",
+      autoRenew: true,
+      commercialOfferId: "offer-user-bound-1",
+    });
+    actor.stop();
+  });
+
   it("loads a stable Tip message after payment and clears it on reset", async () => {
     const loadTipMessage = vi.fn();
     const actor = createActor(

src/stores/payment/helper/catalog.ts

@@ -52,7 +52,7 @@ export function hydratePlansResponseState(
   selectedPlanId: string,
 ): Pick<
   PaymentState,
-  "plans" | "isFirstRecharge" | "selectedPlanId" | "autoRenew" | "errorMessage"
+  "plans" | "isFirstRecharge" | "commercialOffer" | "selectedPlanId" | "autoRenew" | "errorMessage"
 > {
   const plans = normalizeFirstRechargePlans(
     response.plans,
@@ -61,6 +61,7 @@ export function hydratePlansResponseState(
   return {
     ...hydratePlansState(plans, selectedPlanId),
     isFirstRecharge: response.isFirstRecharge,
+    commercialOffer: response.commercialOffer,
   };
 }
 
@@ -89,7 +90,7 @@ export function refreshPlansResponseState(
   selectedPlanId: string,
 ): Pick<
   PaymentState,
-  "plans" | "isFirstRecharge" | "selectedPlanId" | "autoRenew" | "errorMessage"
+  "plans" | "isFirstRecharge" | "commercialOffer" | "selectedPlanId" | "autoRenew" | "errorMessage"
 > {
   const plans = normalizeFirstRechargePlans(
     response.plans,
@@ -98,6 +99,7 @@ export function refreshPlansResponseState(
   return {
     ...refreshPlansState(plans, selectedPlanId),
     isFirstRecharge: response.isFirstRecharge,
+    commercialOffer: response.commercialOffer,
   };
 }
 

src/stores/payment/machine/actors/order.ts

@@ -15,6 +15,7 @@ export const createPaymentOrderActor = fromPromise<
     payChannel: PayChannel;
     autoRenew: boolean;
     recipientCharacterId?: string;
+    commercialOfferId?: string;
   }
 >(async ({ input }) => {
   const result = await getPaymentRepository().createOrder(
@@ -22,6 +23,7 @@ export const createPaymentOrderActor = fromPromise<
     input.payChannel,
     input.autoRenew,
     input.recipientCharacterId,
+    input.commercialOfferId,
   );
   if (Result.isErr(result)) throw result.error;
   return result.data;

src/stores/payment/machine/actors/plans.ts

@@ -8,9 +8,9 @@ import type { PaymentPlanCatalog } from "../../payment-state";
 
 export const loadCachedPaymentPlansActor = fromPromise<
   PaymentPlansResponse | null,
-  { catalog: PaymentPlanCatalog }
+  { catalog: PaymentPlanCatalog; commercialOfferId?: string | null }
 >(async ({ input }) => {
-  if (input.catalog === "tip") return null;
+  if (input.catalog === "tip" || input.commercialOfferId) return null;
   const result = await getPaymentRepository().getCachedPlans();
   if (Result.isErr(result)) throw result.error;
   return result.data;
@@ -18,13 +18,13 @@ export const loadCachedPaymentPlansActor = fromPromise<
 
 export const refreshPaymentPlansActor = fromPromise<
   PaymentPlansResponse,
-  { catalog: PaymentPlanCatalog }
+  { catalog: PaymentPlanCatalog; commercialOfferId?: string | null }
 >(async ({ input }) => {
   const paymentRepo = getPaymentRepository();
   if (input.catalog === "tip") {
     throw new Error("Gift catalogs must use the gift products actor.");
   }
-  const result = await paymentRepo.getPlans();
+  const result = await paymentRepo.getPlans(input.commercialOfferId ?? undefined);
   if (Result.isErr(result)) throw result.error;
   return result.data;
 });

src/stores/payment/machine/catalog-flow.ts

@@ -35,24 +35,30 @@ function initializeCatalogState(
     planCatalog === "tip" &&
     ((event.category ?? null) !== context.selectedGiftCategory ||
       (event.planId ?? null) !== (context.selectedPlanId || null));
+  const commercialOfferId =
+    planCatalog === "default" ? (event.commercialOfferId ?? null) : null;
+  const offerChanged = commercialOfferId !== context.commercialOfferId;
 
   return {
     planCatalog,
     ...(event.payChannel ? { payChannel: event.payChannel } : {}),
     giftCharacterId,
+    commercialOfferId,
     requestedGiftCategory:
       planCatalog === "tip" ? (event.category ?? null) : null,
     requestedGiftPlanId:
       planCatalog === "tip" ? (event.planId ?? null) : null,
-    ...(catalogChanged || characterChanged || selectionChanged
+    ...(catalogChanged || characterChanged || selectionChanged || offerChanged
       ? {
           ...resetOrderState(),
           plans: [],
           giftCategories: [],
           giftProducts: [],
           selectedGiftCategory: null,
-          selectedPlanId: "",
+          selectedPlanId:
+            planCatalog === "default" ? (event.planId ?? "") : "",
           isFirstRecharge: false,
+          commercialOffer: null,
           autoRenew: planCatalog !== "tip",
         }
       : {}),
@@ -207,7 +213,10 @@ export const loadingCachedPlansState =
   catalogMachineSetup.createStateConfig({
     invoke: {
       src: "loadCachedPlans",
-      input: ({ context }) => ({ catalog: context.planCatalog }),
+      input: ({ context }) => ({
+        catalog: context.planCatalog,
+        commercialOfferId: context.commercialOfferId,
+      }),
       onDone: [
         {
           guard: ({ event }) => (event.output?.plans.length ?? 0) > 0,
@@ -223,7 +232,10 @@ export const loadingCachedPlansState =
 export const loadingPlansState = catalogMachineSetup.createStateConfig({
   invoke: {
     src: "refreshPlans",
-    input: ({ context }) => ({ catalog: context.planCatalog }),
+    input: ({ context }) => ({
+      catalog: context.planCatalog,
+      commercialOfferId: context.commercialOfferId,
+    }),
     onDone: {
       target: "ready",
       actions: hydratePlansAction,
@@ -238,7 +250,10 @@ export const loadingPlansState = catalogMachineSetup.createStateConfig({
 export const refreshingPlansState = catalogMachineSetup.createStateConfig({
   invoke: {
     src: "refreshPlans",
-    input: ({ context }) => ({ catalog: context.planCatalog }),
+    input: ({ context }) => ({
+      catalog: context.planCatalog,
+      commercialOfferId: context.commercialOfferId,
+    }),
     onDone: {
       target: "ready",
       actions: refreshPlansAction,

src/stores/payment/machine/order-flow.ts

@@ -195,6 +195,9 @@ const creatingOrderState = paymentMachineSetup.createStateConfig({
       event.recipientCharacterId
         ? { recipientCharacterId: event.recipientCharacterId }
         : {}),
+      ...(context.commercialOfferId
+        ? { commercialOfferId: context.commercialOfferId }
+        : {}),
     }),
     onDone: {
       target: "pollingOrder",

src/stores/payment/payment-context.tsx

@@ -19,6 +19,7 @@ export interface PaymentContextState {
   giftProducts: MachineContext["giftProducts"];
   selectedGiftCategory: string | null;
   isFirstRecharge: MachineContext["isFirstRecharge"];
+  commercialOffer: MachineContext["commercialOffer"];
   selectedPlanId: string;
   payChannel: MachineContext["payChannel"];
   autoRenew: boolean;
@@ -74,6 +75,7 @@ function selectPaymentState(state: PaymentSnapshot): PaymentContextState {
     giftProducts: state.context.giftProducts,
     selectedGiftCategory: state.context.selectedGiftCategory,
     isFirstRecharge: state.context.isFirstRecharge,
+    commercialOffer: state.context.commercialOffer,
     selectedPlanId: state.context.selectedPlanId,
     payChannel: state.context.payChannel,
     autoRenew: state.context.autoRenew,

src/stores/payment/payment-events.ts

@@ -10,6 +10,7 @@ export type PaymentEvent =
       characterId?: string;
       category?: string | null;
       planId?: string | null;
+      commercialOfferId?: string | null;
     }
   | { type: "PaymentPlanSelected"; planId: string }
   | { type: "PaymentPayChannelChanged"; payChannel: PayChannel }

src/stores/payment/payment-state.ts

@@ -5,6 +5,7 @@ import type {
   PayChannel,
   PaymentOrderStatus,
   PaymentPlan,
+  CommercialOfferSummary,
   TipMessageResponse,
 } from "@/data/schemas/payment";
 
@@ -20,6 +21,8 @@ export interface PaymentState {
   requestedGiftCategory: string | null;
   requestedGiftPlanId: string | null;
   isFirstRecharge: boolean;
+  commercialOfferId: string | null;
+  commercialOffer: CommercialOfferSummary | null;
   selectedPlanId: string;
   payChannel: PayChannel;
   autoRenew: boolean;
@@ -45,6 +48,8 @@ export const initialState: PaymentState = {
   requestedGiftCategory: null,
   requestedGiftPlanId: null,
   isFirstRecharge: false,
+  commercialOfferId: null,
+  commercialOffer: null,
   selectedPlanId: "",
   payChannel: "stripe",
   autoRenew: true,