新增模型补全空洞

client/core/net/ModelServerClient.h

@@ -37,6 +37,16 @@ public:
         const QJsonArray& boxXyxy,
         QString* outImmediateError = nullptr);
 
+    // POST /inpaint，JSON 响应由调用方解析（success / output_image_b64 / error / output_path）。
+    QNetworkReply* inpaintAsync(
+        const QByteArray& cropRgbPngBytes,
+        const QByteArray& maskPngBytes,
+        const QString& prompt,
+        const QString& negativePrompt,
+        double strength,
+        int maxSide,
+        QString* outImmediateError = nullptr);
+
 private:
     QNetworkAccessManager* m_nam = nullptr;
     QUrl m_baseUrl;