fix: bypass vip98k media fetch cache on retry

lib/ai/providers/vip98k.ts

@@ -12,6 +12,7 @@ import {
 import { VIP98K_BASE_URL, normalizeVip98kBaseUrl } from "@/lib/ai/vip98k-models";
 import { shouldResolveVip98kResultDelivery } from "@/lib/ai/vip98k-result-delivery";
 import {
+  addVip98kReferenceRetryToken,
   getStorageObjectKeyFromPublicUrl,
   getVip98kStagedMediaRetryDelay,
   shouldStageVip98kReferenceUrl,
@@ -809,13 +810,27 @@ async function submitTask(params: {
   const maxAttempts = stagedReferences.length > 0 ? 3 : 1;
 
   for (let attempt = 1; attempt <= maxAttempts; attempt += 1) {
+    const requestBody =
+      attempt === 1 || !Array.isArray(params.body.file_urls)
+        ? params.body
+        : {
+            ...params.body,
+            file_urls: params.body.file_urls.map((value) =>
+              typeof value === "string" && isStagedReferenceUrl(value)
+                ? addVip98kReferenceRetryToken(
+                    value,
+                    `${Date.now()}-${attempt}`,
+                  )
+                : value,
+            ),
+          };
     const response = await fetch(`${baseURL}${path}`, {
       method: String(params.method || "POST").toUpperCase(),
       headers: {
         Authorization: `Bearer ${params.apiKey}`,
         "Content-Type": params.contentType || "application/json",
       },
-      body: JSON.stringify(params.body),
+      body: JSON.stringify(requestBody),
       signal: AbortSignal.timeout(120_000),
     });
     const payload = await parseJsonResponse(response);

lib/ai/vip98k-reference-staging.ts

@@ -69,3 +69,10 @@ export function getVip98kStagedMediaRetryDelay(params: {
   }
   return params.attempt * 20_000;
 }
+
+export function addVip98kReferenceRetryToken(mediaUrl: string, token: string) {
+  const parsed = parseUrl(mediaUrl);
+  if (!parsed) return mediaUrl;
+  parsed.searchParams.set("sg_media_retry", token);
+  return parsed.toString();
+}

tests/routes/vip98k-reference-routing.test.ts

@@ -10,6 +10,7 @@ import {
   isVip98kImageModelVisible,
 } from "@/lib/ai/vip98k-models";
 import {
+  addVip98kReferenceRetryToken,
   getStorageObjectKeyFromPublicUrl,
   getVip98kStagedMediaRetryDelay,
   shouldStageVip98kReferenceUrl,
@@ -77,6 +78,14 @@ test.describe("VIP98K reference-image routing", () => {
         stagedReferenceCount: 2,
       }),
     ).toBeNull();
+    expect(
+      addVip98kReferenceRetryToken(
+        "https://cdn.example/reference.jpg?existing=1",
+        "retry-2",
+      ),
+    ).toBe(
+      "https://cdn.example/reference.jpg?existing=1&sg_media_retry=retry-2",
+    );
   });
 
   test("shows the newly published Nano Banana Pro image editor", () => {