update

client/gui/main_window/MainWindow.cpp

@@ -4159,8 +4159,10 @@ void MainWindow::rebuildCentralPages() {
                 }
             });
     connect(m_editorCanvas, &EditorCanvas::requestResolveBlackholeCopy, this,
-            [this](const QString& entityId, const QPoint& sourceOffsetPx) {
-                if (!m_workspace.resolveBlackholeByCopyBackground(entityId, sourceOffsetPx, true)) {
+            [this](const QString& entityId, const QRect& targetWorldInBackground,
+                   const QRect& srcWorldInBackground) {
+                if (!m_workspace.resolveBlackholeByCopyBackground(entityId, targetWorldInBackground,
+                                                                  srcWorldInBackground, true)) {
                     QMessageBox::warning(
                         this,
                         QStringLiteral("黑洞修复"),
@@ -4804,9 +4806,9 @@ void MainWindow::showBlackholeContextMenu(const QPoint& globalPos, const QString
             return;
         }
 
-        const int maxDec = std::clamp(std::max(cropRect.width(), cropRect.height()), 512, 4096);
+        // 与黑洞/覆盖层逻辑像素严格对齐：必须按 crop 原始分辨率解码，避免 vips maxOutput 缩放导致预览与写盘发糊。
         QImage bg;
-        if (!core::image_file::loadRegionToQImage(bgAbs, cropRect, maxDec, maxDec, &bg) || bg.isNull()) {
+        if (!core::image_file::loadRegionToQImageExact(bgAbs, cropRect, &bg) || bg.isNull()) {
             QMessageBox::warning(this, QStringLiteral("黑洞修复"), QStringLiteral("读取背景失败。"));
             return;
         }
@@ -5008,6 +5010,9 @@ void MainWindow::showBlackholeContextMenu(const QPoint& globalPos, const QString
         QString immediateErr;
         const QString inpaintModel = dlg.inpaintModelKey();
         const QString prompt = dlg.promptText();
+        // 后端在不超过 max_side 时保持输入分辨率推理，再缩回原尺寸；此处用裁剪长边避免无谓降采样（上限与 API 一致）。
+        const int cropMaxSide = std::max(cropRect.width(), cropRect.height());
+        const int inpaintMaxSide = std::clamp(cropMaxSide, 256, 8192);
         QNetworkReply* reply = client->inpaintAsync(
             cropPng,
             maskPng,
@@ -5015,7 +5020,7 @@ void MainWindow::showBlackholeContextMenu(const QPoint& globalPos, const QString
             prompt,
             QString(),
             0.72,
-            1024,
+            inpaintMaxSide,
             &immediateErr);
         if (!reply) {
             QMessageBox::warning(this,