feat: add MCP creator screenshot metrics recognition

koc-portal/app/page.tsx

@@ -954,7 +954,7 @@ export default function Home() {
     selectedItem: Assignment,
     file: File,
     kind: "publish" | "creator-center" | "task-result",
-  ) => {
+  ): Promise<{ exposure?: number | null; views?: number | null; ocrStatus?: string }> => {
     const compressed = await compressScreenshot(file);
     const headers: Record<string, string> = {
       "Content-Type": compressed.type || "image/jpeg",
@@ -973,7 +973,12 @@ export default function Home() {
       headers,
       body: compressed,
     });
-    const uploadResult = (await uploadResponse.json()) as { error?: string };
+    const uploadResult = (await uploadResponse.json()) as {
+      error?: string;
+      exposure?: number | null;
+      views?: number | null;
+      ocrStatus?: string;
+    };
     if (!uploadResponse.ok) {
       throw new Error(
         uploadResult.error ||
@@ -984,6 +989,7 @@ export default function Home() {
             : "发布截图上传失败"),
       );
     }
+    return uploadResult;
   };
 
   const submitNote = async (event: FormEvent) => {
@@ -1082,22 +1088,31 @@ export default function Home() {
       setToast("请选择创作者中心截图");
       return;
     }
-    if (
-      !/^\d{1,12}$/.test(creatorExposure) ||
-      !/^\d{1,12}$/.test(creatorViews)
-    ) {
-      setToast("请填写正确的曝光量和阅读量");
-      return;
-    }
     try {
       setCreatorWorking(true);
+      let exposureValue = creatorExposure;
+      let viewsValue = creatorViews;
       if (creatorScreenshot) {
         setCreatorStage("正在上传截图…");
-        await uploadEvidence(
+        const ocrResult = await uploadEvidence(
           selected,
           creatorScreenshot,
           "creator-center",
         );
+        if (typeof ocrResult.exposure === "number") {
+          exposureValue = String(ocrResult.exposure);
+          setCreatorExposure(exposureValue);
+        }
+        if (typeof ocrResult.views === "number") {
+          viewsValue = String(ocrResult.views);
+          setCreatorViews(viewsValue);
+        }
+        if (ocrResult.ocrStatus === "success") {
+          setCreatorStage("已识别截图数据，正在保存…");
+        }
+      }
+      if (!/^\d{1,12}$/.test(exposureValue) || !/^\d{1,12}$/.test(viewsValue)) {
+        throw new Error("未识别到完整数据，请填写曝光量和阅读量");
       }
       setCreatorStage("正在保存数据…");
       const response = await fetch(partnerApi("/api/partner"), {
@@ -1109,8 +1124,8 @@ export default function Home() {
           claimToken,
           delegationToken,
           distributionId: selected.id,
-          exposure: creatorExposure,
-          views: creatorViews,
+          exposure: exposureValue,
+          views: viewsValue,
         }),
       });
       const result = (await response.json()) as { error?: string };
@@ -1593,7 +1608,7 @@ export default function Home() {
                       <div className="evidence-empty-state">
                         <b>＋</b>
                         <strong>点击选择第7天创作者中心截图</strong>
-                        <small>截图仅用于运营核对，不再自动OCR</small>
+                        <small>上传后自动识别曝光量和阅读量，识别失败可手动填写</small>
                       </div>
                     )}
                     <label className="evidence-upload-action">