feat(gui): add shared zoomable image preview

app/gui/tabs/product_suite.py

@@ -13,7 +13,6 @@ from PySide6.QtWidgets import (
     QApplication,
     QCheckBox,
     QComboBox,
-    QDialog,
     QFileDialog,
     QFrame,
     QGridLayout,
@@ -43,6 +42,7 @@ from PySide6.QtWidgets import (
 
 from ... import accounts, appconfig, diagnostics, image_studio, image_studio_images, product_suite
 from .. import file_manager
+from ..image_preview import ImagePreviewDialog
 from ..widgets import COLOR_DANGER, _emit_status, run_worker
 from ..workers import (
     ImageStudioDownloadOriginalWorker,
@@ -109,42 +109,8 @@ def _user_error(error):
     return text if len(text) <= 90 else text[:87] + "..."
 
 
-class ProductSuitePreviewDialog(QDialog):
-    """Responsive preview for product originals and generated assets."""
-
-    def __init__(self, path, title="图片预览", parent=None):
-        super().__init__(parent)
-        self._source = QPixmap(str(path or ""))
-        self.setWindowTitle(str(title or "图片预览"))
-        layout = QVBoxLayout(self)
-        self.image_label = QLabel()
-        self.image_label.setAlignment(Qt.AlignCenter)
-        self.image_label.setMinimumSize(320, 240)
-        layout.addWidget(self.image_label, 1)
-        close_button = QPushButton("关闭")
-        close_button.clicked.connect(self.accept)
-        button_row = QHBoxLayout()
-        button_row.addStretch(1)
-        button_row.addWidget(close_button)
-        layout.addLayout(button_row)
-        self.resize(820, 620)
-        self._render()
-
-    def resizeEvent(self, event):
-        super().resizeEvent(event)
-        self._render()
-
-    def _render(self):
-        if self._source.isNull():
-            self.image_label.setText("图片文件不存在或无法读取")
-            self.image_label.setPixmap(QPixmap())
-            return
-        target = self.image_label.size() - QSize(16, 16)
-        if target.width() <= 0 or target.height() <= 0:
-            return
-        self.image_label.setPixmap(
-            self._source.scaled(target, Qt.KeepAspectRatio, Qt.SmoothTransformation)
-        )
+class ProductSuitePreviewDialog(ImagePreviewDialog):
+    """Current product-suite wrapper for the shared full-image preview."""
 
 
 class ProductOriginalDelegate(QStyledItemDelegate):