cmshoppe/app/gui/tabs/product_suite.py

"""Tab 6: project-bound product suite generation workspace."""

from __future__ import annotations

import os
import re
import time
import uuid
from dataclasses import dataclass, field

from PySide6.QtCore import (
    QByteArray,
    QBuffer,
    QIODevice,
    QRect,
    QSize,
    Qt,
    QTimer,
    Signal,
    Slot,
)
from PySide6.QtGui import QColor, QIcon, QImage, QImageReader, QKeySequence, QPainter, QPixmap
from PySide6.QtWidgets import (
    QApplication,
    QCheckBox,
    QComboBox,
    QDialog,
    QFileDialog,
    QFrame,
    QGridLayout,
    QHBoxLayout,
    QInputDialog,
    QLabel,
    QLineEdit,
    QListView,
    QListWidget,
    QListWidgetItem,
    QMenu,
    QMessageBox,
    QPlainTextEdit,
    QProgressBar,
    QPushButton,
    QScrollArea,
    QSizePolicy,
    QSplitter,
    QStyle,
    QStyledItemDelegate,
    QStyleOptionButton,
    QTabBar,
    QToolButton,
    QVBoxLayout,
    QWidget,
)

from ... import (
    accounts,
    ai,
    appconfig,
    diagnostics,
    image_studio,
    image_studio_images,
    product_suite,
    prompts,
)
from .. import file_manager
from ..image_preview import ImagePreviewDialog
from ..product_suite_prompt_dialog import ProductSuitePromptDialog
from ..widgets import _emit_status, run_worker
from ..workers import (
    ImageStudioDownloadOriginalWorker,
    ImageStudioPullImagesWorker,
    ProductSuiteAiWriteWorker,
    ProductSuiteGenerateWorker,
    ProductSuiteHistoryExportWorker,
    ProductSuiteImportImagesWorker,
)


ORIGINAL_DOWNLOAD_CONCURRENCY = 2
ORIGINAL_CHECK_STATE_ROLE = Qt.UserRole + 1
PROMPT_AUTOSAVE_DELAY_MS = 500
_PRODUCT_SUITE_THREAD_REFS = {}
_URL_RE = re.compile(r"https?://[^\s，,；;）)\]]+", re.IGNORECASE)


class AutoHeightPlainTextEdit(QPlainTextEdit):
    """A plain-text editor that delegates scrolling to its containing page."""

    def __init__(self, parent=None, minimum_height=96):
        super().__init__(parent)
        self._minimum_content_height = max(1, int(minimum_height))
        self._height_update_pending = False
        self.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
        self.setVerticalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
        self.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Fixed)
        self.setFixedHeight(self._minimum_content_height)
        self.document().contentsChanged.connect(self.schedule_height_update)
        self.document().documentLayout().documentSizeChanged.connect(
            self.schedule_height_update
        )
        self.schedule_height_update()

    def schedule_height_update(self, *args):
        if self._height_update_pending:
            return
        self._height_update_pending = True
        QTimer.singleShot(0, self.refresh_height)

    def refresh_height(self):
        self._height_update_pending = False
        text_height = 0.0
        block = self.document().firstBlock()
        while block.isValid():
            layout = block.layout()
            line_count = max(1, layout.lineCount())
            for index in range(line_count):
                line = layout.lineAt(index)
                text_height += (
                    line.height()
                    if line.isValid()
                    else self.fontMetrics().lineSpacing()
                )
            block = block.next()
        margins = self.contentsMargins()
        target = int(
            text_height
            + (self.document().documentMargin() * 2)
            + margins.top()
            + margins.bottom()
            + (self.frameWidth() * 2)
            + 6
        )
        target = max(self._minimum_content_height, target)
        if self.height() != target:
            self.setFixedHeight(target)
            self.updateGeometry()

    def resizeEvent(self, event):
        super().resizeEvent(event)
        self.schedule_height_update()

    def showEvent(self, event):
        super().showEvent(event)
        self.schedule_height_update()


def _asset_usable(asset):
    path = str(getattr(asset, "local_path", "") or "")
    return (
        getattr(asset, "status", "") != image_studio.ASSET_STATUS_MISSING
        and bool(path)
        and os.path.isfile(path)
    )


def _placeholder_pixmap(text, size, color="#f3f4f6"):
    pixmap = QPixmap(size)
    pixmap.fill(QColor(color))
    painter = QPainter(pixmap)
    painter.setPen(QColor("#6b7280"))
    painter.drawText(pixmap.rect(), Qt.AlignCenter | Qt.TextWordWrap, str(text or ""))
    painter.end()
    return pixmap


def _image_pixmap(path, size, fallback="暂无图片"):
    image = QImage()
    if path and os.path.isfile(path):
        reader = QImageReader(str(path))
        reader.setAutoTransform(True)
        source_size = reader.size()
        if source_size.isValid():
            source_size.scale(size, Qt.KeepAspectRatio)
            reader.setScaledSize(source_size)
        image = reader.read()
    if image.isNull():
        return _placeholder_pixmap(fallback, size)
    scaled = QPixmap.fromImage(image).scaled(size, Qt.KeepAspectRatio, Qt.SmoothTransformation)
    canvas = QPixmap(size)
    canvas.fill(QColor("#f7f8fa"))
    painter = QPainter(canvas)
    painter.drawPixmap(
        max(0, (size.width() - scaled.width()) // 2),
        max(0, (size.height() - scaled.height()) // 2),
        scaled,
    )
    painter.end()
    return canvas


def _user_error(error):
    text = diagnostics.redact_log_text(str(error or "未知错误"))
    text = _URL_RE.sub("[链接已隐藏]", text).replace("\r", " ").replace("\n", " ").strip()
    return text if len(text) <= 90 else text[:87] + "..."


class ProductSuitePreviewDialog(ImagePreviewDialog):
    """Current product-suite wrapper for the shared full-image preview."""


class ProductOriginalDelegate(QStyledItemDelegate):
    CHECK_HIT_SIZE = 26

    @classmethod
    def checkbox_hit_rect(cls, item_rect):
        return QRect(
            item_rect.left() + 2,
            item_rect.top() + 2,
            cls.CHECK_HIT_SIZE,
            cls.CHECK_HIT_SIZE,
        )

    def paint(self, painter, option, index):
        super().paint(painter, option, index)
        if index.data(Qt.UserRole) is None:
            return
        checked = index.data(ORIGINAL_CHECK_STATE_ROLE) == Qt.Checked
        style = QApplication.style()
        width = style.pixelMetric(QStyle.PM_IndicatorWidth)
        height = style.pixelMetric(QStyle.PM_IndicatorHeight)
        hit_rect = self.checkbox_hit_rect(option.rect)
        checkbox = QStyleOptionButton()
        checkbox.rect = QRect(
            hit_rect.center().x() - width // 2,
            hit_rect.center().y() - height // 2,
            width,
            height,
        )
        checkbox.state = QStyle.State_Enabled if option.state & QStyle.State_Enabled else QStyle.State_None
        checkbox.state |= QStyle.State_On if checked else QStyle.State_Off
        style.drawControl(QStyle.CE_CheckBox, checkbox, painter)


class ProductOriginalList(QListWidget):
    MAX_VISIBLE_ASSETS = 16
    EMPTY_STATE_TEXT = "暂无商品原图"

    filesDropped = Signal(list)
    clipboardImage = Signal(bytes)
    orderChanged = Signal(list)
    deleteRequested = Signal(int)
    deleteAssetsRequested = Signal(list)
    checkedAssetsChanged = Signal(list)

    def __init__(self, parent=None):
        super().__init__(parent)
        self.setObjectName("suiteOriginalList")
        self.setViewMode(QListView.IconMode)
        self.setResizeMode(QListView.Adjust)
        self.setMovement(QListView.Snap)
        self.setWrapping(True)
        self.setIconSize(QSize(82, 64))
        self.setGridSize(QSize(112, 98))
        self.setSpacing(4)
        self.setHorizontalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
        self.setVerticalScrollBarPolicy(Qt.ScrollBarAlwaysOff)
        self.setAcceptDrops(True)
        self.setDragEnabled(True)
        self.setDropIndicatorShown(True)
        self.setDragDropMode(QListWidget.InternalMove)
        self.setContextMenuPolicy(Qt.CustomContextMenu)
        self.customContextMenuRequested.connect(self._show_menu)
        self.itemChanged.connect(lambda item: self.checkedAssetsChanged.emit(self.checked_asset_ids()))
        self.setItemDelegate(ProductOriginalDelegate(self))
        self.setMouseTracking(True)
        self.itemEntered.connect(self._show_hover_remove)
        self._hovered_asset_id = None
        self._hover_remove_button = QToolButton(self.viewport())
        self._hover_remove_button.setText("×")
        self._hover_remove_button.setToolTip("删除这张商品原图")
        self._hover_remove_button.setAccessibleName("删除商品原图")
        self._hover_remove_button.setFixedSize(28, 28)
        self._hover_remove_button.clicked.connect(self._remove_hovered)
        self._hover_remove_button.hide()
        self.setToolTip("可拖入或粘贴图片；已有缩略图可拖动排序")

    def paintEvent(self, event):
        super().paintEvent(event)
        if self.count() != 0:
            return
        painter = QPainter(self.viewport())
        painter.setPen(QColor("#6b7280"))
        painter.drawText(
            self.viewport().rect().adjusted(12, 8, -12, -8),
            Qt.AlignCenter,
            self.EMPTY_STATE_TEXT,
        )
        painter.end()

    def dragEnterEvent(self, event):
        if event.mimeData().hasUrls():
            event.acceptProposedAction()
            return
        super().dragEnterEvent(event)

    def dragMoveEvent(self, event):
        if event.mimeData().hasUrls():
            event.acceptProposedAction()
            return
        super().dragMoveEvent(event)

    def dropEvent(self, event):
        if event.mimeData().hasUrls():
            paths = [url.toLocalFile() for url in event.mimeData().urls() if url.isLocalFile()]
            self.filesDropped.emit(paths)
            event.acceptProposedAction()
            return
        super().dropEvent(event)
        self.orderChanged.emit(self.asset_ids())

    def resizeEvent(self, event):
        super().resizeEvent(event)
        self.update_content_height()

    def mousePressEvent(self, event):
        position = event.position().toPoint()
        item = self.itemAt(position)
        if (
            event.button() == Qt.LeftButton
            and item is not None
            and item.data(Qt.UserRole) is not None
            and ProductOriginalDelegate.checkbox_hit_rect(self.visualItemRect(item)).contains(position)
        ):
            self._set_item_checked(item, not self._item_checked(item))
            event.accept()
            return
        super().mousePressEvent(event)

    def mouseDoubleClickEvent(self, event):
        position = event.position().toPoint()
        item = self.itemAt(position)
        if (
            item is not None
            and item.data(Qt.UserRole) is not None
            and ProductOriginalDelegate.checkbox_hit_rect(self.visualItemRect(item)).contains(position)
        ):
            event.accept()
            return
        super().mouseDoubleClickEvent(event)

    def keyPressEvent(self, event):
        if event.matches(QKeySequence.Paste):
            image = QApplication.clipboard().image()
            if not image.isNull():
                payload = QByteArray()
                buffer = QBuffer(payload)
                buffer.open(QIODevice.WriteOnly)
                image.save(buffer, "PNG")
                buffer.close()
                self.clipboardImage.emit(bytes(payload))
                return
        if event.key() in {Qt.Key_Delete, Qt.Key_Backspace}:
            checked_ids = self.checked_asset_ids()
            if checked_ids:
                self.deleteAssetsRequested.emit(checked_ids)
                return
            item = self.currentItem()
            if item is not None and item.data(Qt.UserRole) is not None:
                self.deleteRequested.emit(int(item.data(Qt.UserRole)))
                return
        if event.key() == Qt.Key_Space:
            item = self.currentItem()
            if item is not None and item.data(Qt.UserRole) is not None:
                self._set_item_checked(item, not self._item_checked(item))
                return
        super().keyPressEvent(event)

    def asset_ids(self):
        return [
            int(self.item(row).data(Qt.UserRole))
            for row in range(self.count())
            if self.item(row).data(Qt.UserRole) is not None
        ]

    def checked_asset_ids(self):
        return [
            int(self.item(row).data(Qt.UserRole))
            for row in range(self.count())
            if self.item(row).data(Qt.UserRole) is not None
            and self._item_checked(self.item(row))
        ]

    def set_checked_asset_ids(self, asset_ids):
        checked_ids = {int(asset_id) for asset_id in asset_ids or []}
        previous = self.blockSignals(True)
        try:
            for row in range(self.count()):
                item = self.item(row)
                asset_id = item.data(Qt.UserRole)
                if asset_id is not None:
                    item.setData(
                        ORIGINAL_CHECK_STATE_ROLE,
                        Qt.Checked if int(asset_id) in checked_ids else Qt.Unchecked,
                    )
        finally:
            self.blockSignals(previous)
        self.viewport().update()
        self.checkedAssetsChanged.emit(self.checked_asset_ids())

    def select_all_assets(self):
        self.set_checked_asset_ids(self.asset_ids())

    def invert_asset_checks(self):
        checked = set(self.checked_asset_ids())
        self.set_checked_asset_ids([asset_id for asset_id in self.asset_ids() if asset_id not in checked])

    def clear_checks(self):
        self.set_checked_asset_ids([])

    def content_column_count(self):
        step = max(1, self.gridSize().width() + self.spacing())
        available = max(1, self.viewport().width() - self.spacing())
        return max(1, (available + self.spacing()) // step)

    def content_row_count(self):
        count = min(self.MAX_VISIBLE_ASSETS, self.count())
        if count == 0:
            return 1
        columns = self.content_column_count()
        return (count + columns - 1) // columns

    def update_content_height(self):
        rows = self.content_row_count()
        target = (
            rows * self.gridSize().height()
            + (rows + 1) * self.spacing()
            + 2 * self.frameWidth()
        )
        if target != self.height():
            self.setFixedHeight(target)

    def _show_menu(self, position):
        item = self.itemAt(position)
        if item is None or item.data(Qt.UserRole) is None:
            return
        menu = QMenu(self)
        actions = []
        for label, asset_ids in self.context_delete_options(int(item.data(Qt.UserRole))):
            actions.append((menu.addAction(label), asset_ids))
        selected = menu.exec(self.viewport().mapToGlobal(position))
        for action, asset_ids in actions:
            if selected is action:
                if len(asset_ids) == 1 and asset_ids[0] not in self.checked_asset_ids():
                    self.deleteRequested.emit(asset_ids[0])
                else:
                    self.deleteAssetsRequested.emit(asset_ids)
                return

    def context_delete_options(self, clicked_asset_id):
        clicked_asset_id = int(clicked_asset_id)
        checked_ids = self.checked_asset_ids()
        if clicked_asset_id in checked_ids:
            if len(checked_ids) > 1:
                return [("删除选中的%d张图片…" % len(checked_ids), checked_ids)]
            return [("删除选中图片…", checked_ids)]
        options = [("删除这张图片…", [clicked_asset_id])]
        if checked_ids:
            label = (
                "删除选中的%d张图片…" % len(checked_ids)
                if len(checked_ids) > 1
                else "删除选中图片…"
            )
            options.append((label, checked_ids))
        return options

    @staticmethod
    def _item_checked(item):
        return item.data(ORIGINAL_CHECK_STATE_ROLE) == Qt.Checked

    @staticmethod
    def _set_item_checked(item, checked):
        item.setData(ORIGINAL_CHECK_STATE_ROLE, Qt.Checked if checked else Qt.Unchecked)

    def _show_hover_remove(self, item):
        value = item.data(Qt.UserRole)
        if value is None:
            self._hovered_asset_id = None
            self._hover_remove_button.hide()
            return
        self._hovered_asset_id = int(value)
        rect = self.visualItemRect(item)
        self._hover_remove_button.move(max(0, rect.right() - 27), rect.top() + 1)
        self._hover_remove_button.show()
        self._hover_remove_button.raise_()

    def _remove_hovered(self):
        if self._hovered_asset_id is not None:
            self.deleteRequested.emit(int(self._hovered_asset_id))

    def leaveEvent(self, event):
        self._hovered_asset_id = None
        self._hover_remove_button.hide()
        super().leaveEvent(event)


class SuiteCategoryRow(QFrame):
    countChangeRequested = Signal(str, int)
    renameRequested = Signal(str)
    deleteRequested = Signal(str)

    def __init__(self, name, count, *, helper="", custom=False, parent=None):
        super().__init__(parent)
        self.category_name = str(name)
        self._controls_enabled = True
        self.setObjectName("suiteCategoryRow")
        self.setProperty("categoryName", self.category_name)
        self.setStyleSheet(
            "QFrame#suiteCategoryRow { border: none; border-bottom: 1px solid #eaeef2; }"
        )

        layout = QGridLayout(self)
        layout.setContentsMargins(6, 5, 4, 6)
        layout.setHorizontalSpacing(8)
        layout.setVerticalSpacing(2)
        layout.setColumnStretch(0, 1)

        self.name_label = QLabel(self.category_name)
        self.name_label.setObjectName("suiteCategoryNameLabel")
        self.name_label.setStyleSheet("font-weight: 600; color: #24292f;")
        layout.addWidget(self.name_label, 0, 0)

        controls_widget = QWidget()
        controls = QHBoxLayout(controls_widget)
        controls.setContentsMargins(0, 0, 0, 0)
        controls.setSpacing(4)

        self.minus_button = QToolButton()
        self.minus_button.setObjectName("suiteCategoryMinusButton")
        self.minus_button.setText("−")
        self.minus_button.setToolTip("减少%s数量" % self.category_name)
        self.minus_button.setAccessibleName("减少%s数量" % self.category_name)
        self.minus_button.setMinimumSize(28, 28)
        self.minus_button.clicked.connect(
            lambda checked=False: self.countChangeRequested.emit(self.category_name, -1)
        )
        controls.addWidget(self.minus_button)

        self.count_label = QLabel()
        self.count_label.setObjectName("suiteCategoryCountLabel")
        self.count_label.setAlignment(Qt.AlignCenter)
        self.count_label.setMinimumWidth(28)
        controls.addWidget(self.count_label)

        self.plus_button = QToolButton()
        self.plus_button.setObjectName("suiteCategoryPlusButton")
        self.plus_button.setText("+")
        self.plus_button.setToolTip("增加%s数量" % self.category_name)
        self.plus_button.setAccessibleName("增加%s数量" % self.category_name)
        self.plus_button.setMinimumSize(28, 28)
        self.plus_button.clicked.connect(
            lambda checked=False: self.countChangeRequested.emit(self.category_name, 1)
        )
        controls.addWidget(self.plus_button)

        self.rename_button = None
        self.delete_button = None
        if custom:
            self.rename_button = QToolButton()
            self.rename_button.setObjectName("suiteCategoryRenameButton")
            self.rename_button.setText("改名")
            self.rename_button.setToolTip("重命名%s分类" % self.category_name)
            self.rename_button.setAccessibleName("重命名%s分类" % self.category_name)
            self.rename_button.setMinimumSize(48, 28)
            self.rename_button.clicked.connect(
                lambda checked=False: self.renameRequested.emit(self.category_name)
            )
            controls.addWidget(self.rename_button)

            self.delete_button = QToolButton()
            self.delete_button.setObjectName("suiteCategoryDeleteButton")
            self.delete_button.setText("×")
            self.delete_button.setToolTip("删除%s分类" % self.category_name)
            self.delete_button.setAccessibleName("删除%s分类" % self.category_name)
            self.delete_button.setMinimumSize(28, 28)
            self.delete_button.clicked.connect(
                lambda checked=False: self.deleteRequested.emit(self.category_name)
            )
            controls.addWidget(self.delete_button)

        layout.addWidget(controls_widget, 0, 1, 2 if helper else 1, 1, Qt.AlignTop)
        self.helper_label = None
        if helper:
            self.helper_label = QLabel(str(helper))
            self.helper_label.setObjectName("suiteCategoryHelperLabel")
            self.helper_label.setStyleSheet("color: #6b7280;")
            self.helper_label.setWordWrap(True)
            layout.addWidget(self.helper_label, 1, 0)
        self.set_count(count)

    def set_count(self, count):
        normalized = max(0, int(count or 0))
        self.count_label.setText(str(normalized))
        self.minus_button.setEnabled(self._controls_enabled and normalized > 0)

    def count(self):
        return int(self.count_label.text() or 0)

    def set_controls_enabled(self, enabled):
        self._controls_enabled = bool(enabled)
        self.minus_button.setEnabled(self._controls_enabled and self.count() > 0)
        self.plus_button.setEnabled(self._controls_enabled)
        if self.rename_button is not None:
            self.rename_button.setEnabled(self._controls_enabled)
        if self.delete_button is not None:
            self.delete_button.setEnabled(self._controls_enabled)


class SuiteResultCard(QFrame):
    previewRequested = Signal(object)
    retryRequested = Signal(object)
    menuRequested = Signal(object, object)
    deleteRequested = Signal(object)

    def __init__(self, job, asset=None, parent=None):
        super().__init__(parent)
        self.job = job
        self.asset = asset
        self.setObjectName("suiteResultCard")
        self.setFrameShape(QFrame.StyledPanel)
        self.setFixedSize(186, 224)
        self.setContextMenuPolicy(Qt.CustomContextMenu)
        self.customContextMenuRequested.connect(
            lambda point: self.menuRequested.emit(self.job, self.mapToGlobal(point))
        )
        layout = QVBoxLayout(self)
        layout.setContentsMargins(7, 7, 7, 7)
        layout.setSpacing(5)

        title_row = QHBoxLayout()
        title = QLabel(str(getattr(job, "job_type", "套图")))
        title.setStyleSheet("font-weight: 600; color: #24292f;")
        title_row.addWidget(title, 1)
        if asset is not None and _asset_usable(asset):
            delete_button = QToolButton()
            delete_button.setText("×")
            delete_button.setToolTip("删除这张生成图片")
            delete_button.setAccessibleName("删除生成图片")
            delete_button.setMinimumSize(28, 28)
            delete_button.clicked.connect(lambda: self.deleteRequested.emit(self.job))
            title_row.addWidget(delete_button)
        layout.addLayout(title_row)

        image_label = QLabel()
        image_label.setAlignment(Qt.AlignCenter)
        image_label.setFixedSize(170, 150)
        status = str(getattr(job, "status", "pending") or "pending")
        if asset is not None and _asset_usable(asset):
            image_label.setPixmap(_image_pixmap(asset.local_path, QSize(170, 150)))
        else:
            label = {
                "pending": "等待提交",
                "submitted": "排队中",
                "running": "生成中",
                "failed": "生成失败",
                "expired": "任务过期",
                "cancelled": "已停止",
                "succeeded": "图片已删除",
            }.get(status, "处理中")
            color = "#ffebe9" if status in {"failed", "expired"} else "#f3f4f6"
            image_label.setPixmap(_placeholder_pixmap(label, QSize(170, 150), color))
        image_label.mousePressEvent = lambda event: (
            self.previewRequested.emit(self.job)
            if event.button() == Qt.LeftButton
            else None
        )
        layout.addWidget(image_label)

        footer = QHBoxLayout()
        status_text = {
            "pending": "等待提交",
            "submitted": "已提交",
            "running": "生成中",
            "succeeded": "生成成功" if asset is not None and _asset_usable(asset) else "已删除",
            "failed": "失败：%s" % _user_error(getattr(job, "error", "")),
            "expired": "已过期",
            "cancelled": "已停止",
        }.get(status, status)
        status_label = QLabel(status_text)
        status_label.setWordWrap(False)
        status_label.setToolTip(status_text)
        footer.addWidget(status_label, 1)
        if status in {"failed", "expired", "cancelled"}:
            retry_button = QPushButton("重试")
            retry_button.setMinimumWidth(52)
            retry_button.clicked.connect(lambda: self.retryRequested.emit(self.job))
            footer.addWidget(retry_button)
        layout.addLayout(footer)


class SuiteHistoryImageCard(QFrame):
    """Read-only image card used by the product-suite history dialog."""

    selected = Signal(object)
    previewRequested = Signal(object, object)
    menuRequested = Signal(object, object, object)

    def __init__(self, job, asset=None, retry_count=0, parent=None):
        super().__init__(parent)
        self.job = job
        self.asset = asset
        self.retry_count = max(0, int(retry_count or 0))
        self._selected = False
        self.setObjectName("suiteHistoryImageCard")
        self.setFixedSize(166, 190)
        self.setContextMenuPolicy(Qt.CustomContextMenu)
        self.customContextMenuRequested.connect(
            lambda point: self.menuRequested.emit(
                self.job,
                self.asset,
                self.mapToGlobal(point),
            )
        )

        layout = QVBoxLayout(self)
        layout.setContentsMargins(6, 6, 6, 6)
        layout.setSpacing(4)

        title = QLabel(str(getattr(job, "job_type", "套图") or "套图"))
        title.setStyleSheet("font-weight: 600; color: #24292f;")
        title.setAttribute(Qt.WA_TransparentForMouseEvents, True)
        layout.addWidget(title)

        image = QLabel()
        image.setObjectName("suiteHistoryImage")
        image.setAlignment(Qt.AlignCenter)
        image.setFixedSize(154, 118)
        image.setAttribute(Qt.WA_TransparentForMouseEvents, True)
        status = str(getattr(job, "status", "pending") or "pending")
        if asset is not None and _asset_usable(asset):
            image.setPixmap(_image_pixmap(asset.local_path, QSize(154, 118)))
        else:
            image.setPixmap(
                _placeholder_pixmap(
                    "图片文件不可用" if status == "succeeded" else self._status_text(status),
                    QSize(154, 118),
                    "#fff8c5" if status == "succeeded" else "#f3f4f6",
                )
            )
        layout.addWidget(image)

        footer_text = self._status_text(status)
        if self.retry_count:
            footer_text += " · 重试%d次" % self.retry_count
        footer = QLabel(footer_text)
        footer.setObjectName("suiteHistoryImageStatus")
        footer.setWordWrap(True)
        footer.setMaximumHeight(34)
        footer.setAttribute(Qt.WA_TransparentForMouseEvents, True)
        layout.addWidget(footer)

        tooltip = [
            "类型：%s" % str(getattr(job, "job_type", "套图") or "套图"),
            "状态：%s" % self._status_text(status),
            "生成时间：%s" % _history_time_text(getattr(job, "created_at", "")),
        ]
        if self.retry_count:
            tooltip.append("本槽位已重试%d次" % self.retry_count)
        if asset is None or not _asset_usable(asset):
            tooltip.append("本地图片文件不可用")
        self.setToolTip("\n".join(tooltip))
        self._apply_selected_style()

    @staticmethod
    def _status_text(status):
        return {
            "pending": "等待提交",
            "submitted": "已提交",
            "running": "生成中",
            "succeeded": "生成成功",
            "failed": "生成失败",
            "expired": "任务过期",
            "cancelled": "已停止",
        }.get(str(status or ""), "处理中")

    def set_selected(self, selected):
        self._selected = bool(selected)
        self._apply_selected_style()

    def _apply_selected_style(self):
        border = "#0969da" if self._selected else "#d8dee4"
        background = "#eef6ff" if self._selected else "#ffffff"
        self.setStyleSheet(
            "QFrame#suiteHistoryImageCard {"
            "border: %dpx solid %s; border-radius: 6px; background: %s;"
            "}" % (2 if self._selected else 1, border, background)
        )

    def mousePressEvent(self, event):
        if event.button() == Qt.LeftButton:
            self.selected.emit(self)
        super().mousePressEvent(event)

    def mouseDoubleClickEvent(self, event):
        if event.button() == Qt.LeftButton:
            self.previewRequested.emit(self.job, self.asset)
        super().mouseDoubleClickEvent(event)


def _history_time_text(value):
    text = str(value or "").strip().replace("T", " ")
    if not text:
        return "时间未知"
    return text[:19]


class ProductSuiteHistoryDialog(QDialog):
    """Read-only, project-scoped generation history grouped by persisted rounds."""

    PAGE_SIZE = 20

    def __init__(self, project_id, *, db_path=None, parent=None):
        super().__init__(parent)
        self.project_id = int(project_id)
        self.db_path = db_path
        self._offset = 0
        self._has_more = False
        self._assets = {}
        self._selected_card = None
        self._round_count = 0
        self._available_image_count = 0
        self._project_unavailable = False

        self.setObjectName("suiteHistoryDialog")
        self.setWindowTitle("历史生成记录")
        self.setModal(False)
        self.setAttribute(Qt.WA_DeleteOnClose, True)
        self.setMinimumSize(740, 520)
        self.resize(940, 680)

        layout = QVBoxLayout(self)
        layout.setContentsMargins(14, 14, 14, 14)
        layout.setSpacing(10)

        header = QHBoxLayout()
        header.setSpacing(10)
        header_text = QVBoxLayout()
        header_text.setSpacing(2)
        self.context_label = QLabel()
        self.context_label.setObjectName("suiteHistoryContextLabel")
        self.context_label.setStyleSheet("font-weight: 600; color: #24292f;")
        self.summary_label = QLabel()
        self.summary_label.setObjectName("suiteHistorySummaryLabel")
        self.summary_label.setStyleSheet("color: #57606a;")
        header_text.addWidget(self.context_label)
        header_text.addWidget(self.summary_label)
        header.addLayout(header_text, 1)
        self.refresh_button = QPushButton("刷新")
        self.refresh_button.setObjectName("suiteHistoryRefreshButton")
        self.refresh_button.setToolTip("重新读取当前商品的生成历史")
        self.refresh_button.clicked.connect(self.refresh_history)
        header.addWidget(self.refresh_button)
        layout.addLayout(header)

        self.notice_label = QLabel()
        self.notice_label.setObjectName("suiteHistoryNoticeLabel")
        self.notice_label.setWordWrap(True)
        self.notice_label.hide()
        layout.addWidget(self.notice_label)

        self.scroll = QScrollArea()
        self.scroll.setObjectName("suiteHistoryScrollArea")
        self.scroll.setWidgetResizable(True)
        self.history_content = QWidget()
        self.history_content.setObjectName("suiteHistoryContent")
        self.history_layout = QVBoxLayout(self.history_content)
        self.history_layout.setContentsMargins(0, 0, 0, 0)
        self.history_layout.setSpacing(12)
        self.history_layout.setAlignment(Qt.AlignTop)
        self.scroll.setWidget(self.history_content)
        layout.addWidget(self.scroll, 1)

        self.load_more_button = QPushButton("加载更多")
        self.load_more_button.setObjectName("suiteHistoryLoadMoreButton")
        self.load_more_button.clicked.connect(self.load_more)
        self.load_more_button.hide()
        layout.addWidget(self.load_more_button, 0, Qt.AlignHCenter)

        self.refresh_history()

    def refresh_history(self, checked=False):
        scroll_value = self.scroll.verticalScrollBar().value()
        self._clear_history_content()
        self._offset = 0
        self._has_more = False
        self._assets = {}
        self._round_count = 0
        self._available_image_count = 0
        if not self._load_next_page():
            return
        QTimer.singleShot(
            0,
            lambda: self.scroll.verticalScrollBar().setValue(
                min(scroll_value, self.scroll.verticalScrollBar().maximum())
            ),
        )

    def load_more(self, checked=False):
        if self._has_more:
            self._load_next_page()

    def _load_next_page(self):
        try:
            project = image_studio.get_project(self.project_id, path=self.db_path)
            if project is None:
                self._set_project_unavailable()
                return False
            self._project_unavailable = False
            self._set_context(project)
            if not self._assets:
                self._assets = {
                    int(asset.id): asset
                    for asset in image_studio.list_assets(
                        self.project_id,
                        path=self.db_path,
                    )
                }
            rounds = image_studio.list_generation_rounds(
                self.project_id,
                limit=self.PAGE_SIZE,
                offset=self._offset,
                path=self.db_path,
            )
        except Exception as exc:
            self._set_error("历史记录读取失败：%s" % _user_error(exc))
            return False

        self.notice_label.hide()
        if not rounds and self._offset == 0:
            self._show_empty_state()
        else:
            for round_info in rounds:
                self._add_round(round_info)
        self._offset += len(rounds)
        self._has_more = len(rounds) == self.PAGE_SIZE
        self.load_more_button.setVisible(self._has_more)
        self.load_more_button.setEnabled(self._has_more)
        self._update_summary()
        return True

    def _set_context(self, project):
        account_name = str(project.account_name or project.account_alias or "未命名账号")
        item_text = "临时草稿" if image_studio.is_draft_project(project) else "商品ID：%s" % project.item_id
        self.context_label.setText("店铺：%s · %s" % (account_name, item_text))

    def _update_summary(self):
        refreshed = time.strftime("%H:%M:%S")
        self.summary_label.setText(
            "已加载 %d 轮 · 可用图片 %d 张 · 最近刷新 %s"
            % (self._round_count, self._available_image_count, refreshed)
        )

    def _clear_history_content(self):
        self._selected_card = None
        while self.history_layout.count():
            item = self.history_layout.takeAt(0)
            widget = item.widget()
            if widget is not None:
                widget.deleteLater()

    def _set_project_unavailable(self):
        self._project_unavailable = True
        self._clear_history_content()
        self.context_label.setText("当前商品项目不可用")
        self.summary_label.setText("该商品项目已删除或不可访问")
        self._set_notice("当前商品项目已删除或不可访问，无法继续读取历史生成记录。", "#cf222e")
        self.refresh_button.setEnabled(False)
        self.load_more_button.hide()

    def _set_error(self, message):
        self._clear_history_content()
        self._set_notice(message, "#cf222e")
        self.load_more_button.hide()
        self.refresh_button.setEnabled(True)

    def _set_notice(self, text, color="#57606a"):
        self.notice_label.setText(str(text))
        self.notice_label.setStyleSheet("color: %s; padding: 8px 0;" % color)
        self.notice_label.show()

    def _show_empty_state(self):
        empty = QLabel("暂无历史生成记录，完成套图生成后会自动出现在这里")
        empty.setObjectName("suiteHistoryEmptyLabel")
        empty.setAlignment(Qt.AlignCenter)
        empty.setStyleSheet("color: #6b7280; padding: 56px;")
        self.history_layout.addWidget(empty)

    def _add_round(self, round_info):
        try:
            jobs = image_studio.list_generation_round_current_jobs(
                self.project_id,
                round_info.generation_round_key,
                path=self.db_path,
            )
            attempts = image_studio.list_generation_round_attempts(
                self.project_id,
                round_info.generation_round_key,
                path=self.db_path,
            )
        except Exception as exc:
            self._set_error("历史轮次读取失败：%s" % _user_error(exc))
            return

        section = QWidget()
        section.setObjectName("suiteHistoryRound")
        section.setStyleSheet(
            "QWidget#suiteHistoryRound { border-bottom: 1px solid #d8dee4; }"
        )
        layout = QVBoxLayout(section)
        layout.setContentsMargins(2, 2, 2, 12)
        layout.setSpacing(7)

        header = QHBoxLayout()
        header.setSpacing(8)
        time_label = QLabel(
            "旧版历史记录" if round_info.is_legacy else "生成于 %s" % _history_time_text(round_info.created_at)
        )
        time_label.setStyleSheet("font-weight: 600; color: #24292f;")
        header.addWidget(time_label)
        if round_info.is_current:
            current = QLabel("当前")
            current.setObjectName("suiteHistoryCurrentBadge")
            current.setStyleSheet(
                "color: #0969da; background: #ddf4ff; border: 1px solid #54aeff; "
                "border-radius: 6px; padding: 1px 6px; font-weight: 600;"
            )
            header.addWidget(current)
        elif round_info.is_legacy:
            legacy = QLabel("旧版")
            legacy.setStyleSheet(
                "color: #57606a; background: #f6f8fa; border: 1px solid #d8dee4; "
                "border-radius: 6px; padding: 1px 6px;"
            )
            header.addWidget(legacy)
        header.addStretch(1)
        stats = self._round_stats_text(round_info)
        stats_label = QLabel(stats)
        stats_label.setObjectName("suiteHistoryRoundStats")
        stats_label.setStyleSheet("color: #57606a;")
        header.addWidget(stats_label)
        layout.addLayout(header)

        attempts_by_slot = {}
        for attempt in attempts:
            slot = getattr(attempt, "generation_slot_index", None)
            if slot is not None:
                attempts_by_slot[int(slot)] = attempts_by_slot.get(int(slot), 0) + 1

        if not jobs:
            message = QLabel("本轮没有可展示的图片，已保留生成状态记录。")
            message.setStyleSheet("color: #6b7280; padding: 12px 0;")
            layout.addWidget(message)
        else:
            grid = QGridLayout()
            grid.setContentsMargins(0, 0, 0, 0)
            grid.setHorizontalSpacing(8)
            grid.setVerticalSpacing(8)
            columns = 5
            for index, job in enumerate(jobs):
                asset = self._assets.get(int(job.output_asset_id or 0))
                slot = getattr(job, "generation_slot_index", None)
                retry_count = max(0, attempts_by_slot.get(int(slot), 1) - 1) if slot is not None else 0
                card = SuiteHistoryImageCard(job, asset, retry_count)
                card.selected.connect(self._select_card)
                card.previewRequested.connect(self._preview_job)
                card.menuRequested.connect(self._show_job_menu)
                grid.addWidget(card, index // columns, index % columns)
                if asset is not None and _asset_usable(asset):
                    self._available_image_count += 1
            layout.addLayout(grid)

        self.history_layout.addWidget(section)
        self._round_count += 1

    @staticmethod
    def _round_stats_text(round_info):
        parts = ["记录 %d" % int(round_info.job_count or 0)]
        if round_info.slot_count:
            parts.append("图片 %d" % int(round_info.slot_count))
        parts.append("成功 %d" % int(round_info.succeeded_count or 0))
        if round_info.failed_count:
            parts.append("失败 %d" % int(round_info.failed_count))
        if round_info.cancelled_count:
            parts.append("停止 %d" % int(round_info.cancelled_count))
        if round_info.active_count:
            parts.append("进行中 %d" % int(round_info.active_count))
        if round_info.retry_count:
            parts.append("重试 %d" % int(round_info.retry_count))
        return " · ".join(parts)

    def _select_card(self, card):
        if self._selected_card is card:
            return
        if self._selected_card is not None:
            self._selected_card.set_selected(False)
        self._selected_card = card
        self._selected_card.set_selected(True)

    def _preview_job(self, job, asset):
        if asset is None or not _asset_usable(asset):
            self._set_notice("这张图片的本地文件不可用，无法预览。", "#9a6700")
            return
        ProductSuitePreviewDialog(
            asset.local_path,
            "%s预览" % str(getattr(job, "job_type", "套图") or "套图"),
            self,
        ).exec()

    def _show_job_menu(self, job, asset, global_position):
        menu = QMenu(self)
        preview_action = menu.addAction("预览")
        copy_action = menu.addAction("复制路径")
        folder_action = menu.addAction("打开所在文件夹")
        action = menu.exec(global_position)
        if action is preview_action:
            self._preview_job(job, asset)
        elif action is copy_action:
            if asset is None or not _asset_usable(asset):
                self._set_notice("当前图片没有可复制的本地路径。", "#9a6700")
                return
            QApplication.clipboard().setText(asset.local_path)
            self._set_notice("图片路径已复制。", "#1a7f37")
        elif action is folder_action:
            if asset is None or not _asset_usable(asset):
                self._set_notice("当前图片没有可打开的本地文件夹。", "#9a6700")
                return
            try:
                file_manager.open_in_file_manager(os.path.dirname(asset.local_path))
            except Exception as exc:
                self._set_notice("打开文件夹失败：%s" % _user_error(exc), "#cf222e")

    def closeEvent(self, event):
        self._clear_history_content()
        super().closeEvent(event)


class ProductSuiteRoundPreviewDialog(ImagePreviewDialog):
    """Browse the usable output images that belong to one generation round."""

    def __init__(self, entries, start_index=0, title="套图原图预览", parent=None):
        self._entries = [
            (str(path or ""), str(label or "生成图片"))
            for path, label in list(entries or [])
            if str(path or "")
        ]
        if not self._entries:
            self._entries = [("", "生成图片")]
        self._entry_index = max(0, min(int(start_index or 0), len(self._entries) - 1))
        self._title_prefix = str(title or "套图原图预览")
        path, label = self._entries[self._entry_index]
        super().__init__(path, self._entry_title(label), parent)
        self.setObjectName("suiteHistoryRoundPreviewDialog")

        navigation = QHBoxLayout()
        navigation.setSpacing(6)
        self.previous_button = QToolButton()
        self.previous_button.setObjectName("suiteHistoryPreviewPreviousButton")
        self.previous_button.setText("上一张")
        self.previous_button.setToolTip("查看上一张生成图片")
        self.previous_button.clicked.connect(self.show_previous)
        navigation.addWidget(self.previous_button)
        self.index_label = QLabel()
        self.index_label.setObjectName("suiteHistoryPreviewIndexLabel")
        self.index_label.setAlignment(Qt.AlignCenter)
        self.index_label.setMinimumWidth(86)
        navigation.addWidget(self.index_label)
        self.next_button = QToolButton()
        self.next_button.setObjectName("suiteHistoryPreviewNextButton")
        self.next_button.setText("下一张")
        self.next_button.setToolTip("查看下一张生成图片")
        self.next_button.clicked.connect(self.show_next)
        navigation.addWidget(self.next_button)
        navigation.addStretch(1)
        self.layout().insertLayout(1, navigation)
        self._update_navigation()

    def _entry_title(self, label):
        return "%s · %s" % (self._title_prefix, str(label or "生成图片"))

    def _update_navigation(self):
        total = len(self._entries)
        self.index_label.setText("%d / %d" % (self._entry_index + 1, total))
        self.previous_button.setEnabled(total > 1 and self._entry_index > 0)
        self.next_button.setEnabled(total > 1 and self._entry_index < total - 1)

    def show_previous(self, checked=False):
        if self._entry_index > 0:
            self._show_entry(self._entry_index - 1)

    def show_next(self, checked=False):
        if self._entry_index < len(self._entries) - 1:
            self._show_entry(self._entry_index + 1)

    def _show_entry(self, index):
        self._entry_index = max(0, min(int(index), len(self._entries) - 1))
        path, label = self._entries[self._entry_index]
        self._base_title = self._entry_title(label)
        self._source = self._load_source(path)
        self.fit_to_window = True
        self._display_size = QSize()
        self.setWindowTitle(self._window_title())
        self._update_navigation()
        self._render()


class SuiteGlobalHistoryThumbnail(QLabel):
    """Fixed-size thumbnail that opens its source image on double-click."""

    previewRequested = Signal(int)

    def __init__(self, job, asset, entry_index, parent=None):
        super().__init__(parent)
        self.entry_index = int(entry_index)
        self._available = asset is not None and _asset_usable(asset)
        self.setObjectName("suiteGlobalHistoryThumbnail")
        self.setAlignment(Qt.AlignCenter)
        self.setFixedSize(104, 78)
        self.setToolTip(
            "%s · %s"
            % (
                str(getattr(job, "job_type", "套图") or "套图"),
                SuiteHistoryImageCard._status_text(getattr(job, "status", "")),
            )
        )
        if self._available:
            self.setPixmap(_image_pixmap(asset.local_path, QSize(104, 78)))
            self.setCursor(Qt.PointingHandCursor)
        else:
            self.setPixmap(
                _placeholder_pixmap(
                    "图片不可用",
                    QSize(104, 78),
                    "#fff8c5",
                )
            )

    def mouseDoubleClickEvent(self, event):
        if event.button() == Qt.LeftButton and self._available:
            self.previewRequested.emit(self.entry_index)
        super().mouseDoubleClickEvent(event)


class SuiteGlobalHistoryRoundRow(QFrame):
    """One fixed-height, cross-project history row for a generation round."""

    previewRequested = Signal(object, int)
    exportRequested = Signal(object)

    MAX_THUMBNAILS = 5

    def __init__(self, round_info, jobs, assets_by_job, parent=None):
        super().__init__(parent)
        self.round_info = round_info
        self.jobs = list(jobs or [])
        self.assets_by_job = dict(assets_by_job or {})
        self._usable_entries = [
            (job, self.assets_by_job.get(int(getattr(job, "id", 0) or 0)))
            for job in self.jobs
            if self.assets_by_job.get(int(getattr(job, "id", 0) or 0)) is not None
            and _asset_usable(self.assets_by_job.get(int(getattr(job, "id", 0) or 0)))
        ]
        self.setObjectName("suiteGlobalHistoryRoundRow")
        self.setSizePolicy(QSizePolicy.Expanding, QSizePolicy.Fixed)
        self.setFixedHeight(118)
        self.setStyleSheet(
            "QFrame#suiteGlobalHistoryRoundRow {"
            "border: 1px solid #d8dee4; border-radius: 6px; background: #ffffff;"
            "}"
        )

        layout = QHBoxLayout(self)
        layout.setContentsMargins(10, 8, 10, 8)
        layout.setSpacing(10)

        meta = QVBoxLayout()
        meta.setSpacing(3)
        meta.setContentsMargins(0, 0, 0, 0)
        time_label = QLabel(
            "旧版历史记录"
            if bool(getattr(round_info, "is_legacy", False))
            else "生成于 %s" % _history_time_text(getattr(round_info, "created_at", ""))
        )
        time_label.setObjectName("suiteGlobalHistoryTime")
        time_label.setStyleSheet("font-weight: 600; color: #24292f;")
        meta.addWidget(time_label)
        account = str(
            getattr(round_info, "account_name", "")
            or getattr(round_info, "account_alias", "")
            or "未命名店铺"
        )
        item_text = (
            "临时草稿"
            if str(getattr(round_info, "binding_state", ""))
            == image_studio.PROJECT_BINDING_DRAFT
            else "商品ID：%s" % str(getattr(round_info, "item_id", "") or "未填写")
        )
        meta.addWidget(QLabel("店铺：%s" % account))
        meta.addWidget(QLabel(item_text))
        layout.addLayout(meta, 0)

        thumbnails = QHBoxLayout()
        thumbnails.setSpacing(6)
        thumbnails.setContentsMargins(0, 0, 0, 0)
        shown_entries = self._usable_entries[: self.MAX_THUMBNAILS]
        for entry_index, (job, asset) in enumerate(shown_entries):
            thumbnail = SuiteGlobalHistoryThumbnail(job, asset, entry_index)
            thumbnail.previewRequested.connect(self._emit_preview)
            thumbnails.addWidget(thumbnail)
        if not shown_entries:
            placeholder = QLabel("本轮没有可预览图片")
            placeholder.setObjectName("suiteGlobalHistoryNoImage")
            placeholder.setAlignment(Qt.AlignCenter)
            placeholder.setFixedSize(150, 78)
            placeholder.setStyleSheet("color: #6b7280; background: #f6f8fa;")
            thumbnails.addWidget(placeholder)
        remaining = max(0, len(self._usable_entries) - len(shown_entries))
        if remaining:
            more = QLabel("+%d" % remaining)
            more.setObjectName("suiteGlobalHistoryMoreImages")
            more.setAlignment(Qt.AlignCenter)
            more.setFixedSize(42, 78)
            more.setToolTip("本轮还有%d张可预览生成图片" % remaining)
            more.setStyleSheet("color: #57606a; background: #f6f8fa; border-radius: 4px;")
            thumbnails.addWidget(more)
        thumbnails.addStretch(1)
        layout.addLayout(thumbnails, 1)

        badges = QVBoxLayout()
        badges.setSpacing(5)
        badges.setContentsMargins(0, 0, 0, 0)
        if bool(getattr(round_info, "is_current", False)):
            current = QLabel("当前")
            current.setObjectName("suiteGlobalHistoryCurrentBadge")
            current.setAlignment(Qt.AlignCenter)
            current.setStyleSheet(
                "color: #0969da; background: #ddf4ff; border: 1px solid #54aeff; "
                "border-radius: 5px; padding: 2px 6px; font-weight: 600;"
            )
            badges.addWidget(current)
        elif bool(getattr(round_info, "is_legacy", False)):
            legacy = QLabel("旧版")
            legacy.setAlignment(Qt.AlignCenter)
            legacy.setStyleSheet(
                "color: #57606a; background: #f6f8fa; border: 1px solid #d8dee4; "
                "border-radius: 5px; padding: 2px 6px;"
            )
            badges.addWidget(legacy)
        stats = QLabel(self._stats_text(round_info))
        stats.setObjectName("suiteGlobalHistoryStats")
        stats.setAlignment(Qt.AlignRight | Qt.AlignVCenter)
        stats.setStyleSheet("color: #57606a;")
        badges.addWidget(stats)
        badges.addStretch(1)
        self.export_button = QPushButton("导出本轮")
        self.export_button.setObjectName("suiteGlobalHistoryExportButton")
        self.export_button.setEnabled(bool(getattr(round_info, "succeeded_count", 0)))
        self.export_button.setToolTip("复制本轮成功生成的图片到所选目录")
        self.export_button.clicked.connect(lambda: self.exportRequested.emit(self))
        badges.addWidget(self.export_button)
        layout.addLayout(badges, 0)

    @staticmethod
    def _stats_text(round_info):
        parts = ["成功 %d" % int(getattr(round_info, "succeeded_count", 0) or 0)]
        failed = int(getattr(round_info, "failed_count", 0) or 0)
        cancelled = int(getattr(round_info, "cancelled_count", 0) or 0)
        active = int(getattr(round_info, "active_count", 0) or 0)
        retry = int(getattr(round_info, "retry_count", 0) or 0)
        if failed:
            parts.append("失败 %d" % failed)
        if cancelled:
            parts.append("停止 %d" % cancelled)
        if active:
            parts.append("进行中 %d" % active)
        if retry:
            parts.append("重试 %d" % retry)
        return " · ".join(parts)

    def set_exporting(self, exporting):
        self.export_button.setEnabled(
            not bool(exporting) and bool(getattr(self.round_info, "succeeded_count", 0))
        )
        self.export_button.setText("正在导出" if exporting else "导出本轮")

    def _emit_preview(self, entry_index):
        self.previewRequested.emit(self, int(entry_index))

    def mouseDoubleClickEvent(self, event):
        if event.button() == Qt.LeftButton and self._usable_entries:
            self._emit_preview(0)
        super().mouseDoubleClickEvent(event)


class ProductSuiteGlobalHistoryDialog(QDialog):
    """Read-only global product-suite history with per-round preview and export."""

    PAGE_SIZE = 30

    def __init__(
        self,
        *,
        current_project_id=None,
        current_project_only=False,
        db_path=None,
        parent=None,
    ):
        super().__init__(parent)
        self.db_path = db_path
        self.current_project_id = None
        self._offset = 0
        self._has_more = False
        self._round_count = 0
        self._available_image_count = 0
        self._history_rows = []
        self._asset_cache = {}
        self._export_worker = None
        self._export_thread = None
        self._export_error_handled = False

        self.setObjectName("suiteGlobalHistoryDialog")
        self.setWindowTitle("套图历史生成记录")
        self.setModal(False)
        self.setAttribute(Qt.WA_DeleteOnClose, True)
        self.setMinimumSize(940, 560)
        self.resize(1160, 720)

        layout = QVBoxLayout(self)
        layout.setContentsMargins(14, 14, 14, 14)
        layout.setSpacing(10)

        header = QHBoxLayout()
        title_layout = QVBoxLayout()
        title_layout.setSpacing(2)
        self.context_label = QLabel("全部商品的套图生成历史")
        self.context_label.setObjectName("suiteGlobalHistoryContextLabel")
        self.context_label.setStyleSheet("font-weight: 600; color: #24292f;")
        self.summary_label = QLabel()
        self.summary_label.setObjectName("suiteGlobalHistorySummaryLabel")
        self.summary_label.setStyleSheet("color: #57606a;")
        title_layout.addWidget(self.context_label)
        title_layout.addWidget(self.summary_label)
        header.addLayout(title_layout, 1)
        self.refresh_button = QPushButton("刷新")
        self.refresh_button.setObjectName("suiteGlobalHistoryRefreshButton")
        self.refresh_button.setToolTip("重新读取套图历史生成记录")
        self.refresh_button.clicked.connect(self.refresh_history)
        header.addWidget(self.refresh_button)
        layout.addLayout(header)

        filters = QHBoxLayout()
        filters.setSpacing(8)
        filters.addWidget(QLabel("店铺"))
        self.account_filter_edit = QLineEdit()
        self.account_filter_edit.setObjectName("suiteGlobalHistoryAccountFilter")
        self.account_filter_edit.setPlaceholderText("店铺或账号")
        self.account_filter_edit.setClearButtonEnabled(True)
        self.account_filter_edit.returnPressed.connect(self.refresh_history)
        filters.addWidget(self.account_filter_edit, 1)
        filters.addWidget(QLabel("商品ID"))
        self.item_filter_edit = QLineEdit()
        self.item_filter_edit.setObjectName("suiteGlobalHistoryItemFilter")
        self.item_filter_edit.setPlaceholderText("输入商品ID")
        self.item_filter_edit.setClearButtonEnabled(True)
        self.item_filter_edit.returnPressed.connect(self.refresh_history)
        filters.addWidget(self.item_filter_edit, 1)
        self.current_project_checkbox = QCheckBox("仅当前商品")
        self.current_project_checkbox.setObjectName("suiteGlobalHistoryCurrentProjectFilter")
        self.current_project_checkbox.toggled.connect(self.refresh_history)
        filters.addWidget(self.current_project_checkbox)
        self.filter_button = QPushButton("筛选")
        self.filter_button.setObjectName("suiteGlobalHistoryFilterButton")
        self.filter_button.clicked.connect(self.refresh_history)
        filters.addWidget(self.filter_button)
        layout.addLayout(filters)

        self.notice_label = QLabel()
        self.notice_label.setObjectName("suiteGlobalHistoryNoticeLabel")
        self.notice_label.setWordWrap(True)
        self.notice_label.hide()
        layout.addWidget(self.notice_label)

        self.scroll = QScrollArea()
        self.scroll.setObjectName("suiteGlobalHistoryScrollArea")
        self.scroll.setWidgetResizable(True)
        self.history_content = QWidget()
        self.history_content.setObjectName("suiteGlobalHistoryContent")
        self.history_layout = QVBoxLayout(self.history_content)
        self.history_layout.setContentsMargins(0, 0, 0, 0)
        self.history_layout.setSpacing(7)
        self.history_layout.setAlignment(Qt.AlignTop)
        self.scroll.setWidget(self.history_content)
        layout.addWidget(self.scroll, 1)

        self.load_more_button = QPushButton("加载更多")
        self.load_more_button.setObjectName("suiteGlobalHistoryLoadMoreButton")
        self.load_more_button.clicked.connect(self.load_more)
        self.load_more_button.hide()
        layout.addWidget(self.load_more_button, 0, Qt.AlignHCenter)

        self.set_current_project(current_project_id, refresh=False)
        self.set_current_project_filter(current_project_only, refresh=False)
        self.refresh_history()

    def set_current_project(self, project_id, *, refresh=True):
        try:
            normalized = int(project_id) if project_id is not None else None
        except (TypeError, ValueError):
            normalized = None
        changed = normalized != self.current_project_id
        self.current_project_id = normalized
        previous = self.current_project_checkbox.blockSignals(True)
        self.current_project_checkbox.setEnabled(normalized is not None)
        self.current_project_checkbox.setToolTip(
            "只显示当前商品项目的历史生成记录"
            if normalized is not None
            else "当前没有可筛选的商品项目"
        )
        if normalized is None:
            self.current_project_checkbox.setChecked(False)
        self.current_project_checkbox.blockSignals(previous)
        if refresh and (changed or self.current_project_checkbox.isChecked()):
            self.refresh_history()

    def set_current_project_filter(self, enabled, *, refresh=True):
        should_filter = bool(enabled) and self.current_project_id is not None
        changed = self.current_project_checkbox.isChecked() != should_filter
        previous = self.current_project_checkbox.blockSignals(True)
        self.current_project_checkbox.setChecked(should_filter)
        self.current_project_checkbox.blockSignals(previous)
        if refresh and changed:
            self.refresh_history()

    def refresh_history(self, checked=False):
        scroll_value = self.scroll.verticalScrollBar().value()
        self._clear_history_content()
        self._offset = 0
        self._has_more = False
        self._round_count = 0
        self._available_image_count = 0
        self._asset_cache = {}
        if not self._load_next_page():
            return
        QTimer.singleShot(
            0,
            lambda: self.scroll.verticalScrollBar().setValue(
                min(scroll_value, self.scroll.verticalScrollBar().maximum())
            ),
        )

    def load_more(self, checked=False):
        if self._has_more:
            self._load_next_page()

    def _load_next_page(self):
        try:
            project_id = (
                self.current_project_id
                if self.current_project_checkbox.isChecked()
                else None
            )
            rounds = image_studio.list_global_generation_rounds(
                account_query=self.account_filter_edit.text(),
                item_query=self.item_filter_edit.text(),
                project_id=project_id,
                limit=self.PAGE_SIZE,
                offset=self._offset,
                path=self.db_path,
            )
        except Exception as exc:
            self._set_error("历史记录读取失败：%s" % _user_error(exc))
            return False

        self.notice_label.hide()
        if not rounds and self._offset == 0:
            self._show_empty_state()
        else:
            for round_info in rounds:
                self._add_round(round_info)
        self._offset += len(rounds)
        self._has_more = len(rounds) == self.PAGE_SIZE
        self.load_more_button.setVisible(self._has_more)
        self.load_more_button.setEnabled(self._has_more)
        self._update_summary()
        return True

    def _add_round(self, round_info):
        try:
            jobs = image_studio.list_generation_round_current_jobs(
                round_info.project_id,
                round_info.generation_round_key,
                path=self.db_path,
            )
            assets_by_job = {}
            for job in jobs:
                asset_id = getattr(job, "output_asset_id", None)
                if not asset_id:
                    continue
                asset_id = int(asset_id)
                if asset_id not in self._asset_cache:
                    self._asset_cache[asset_id] = image_studio.get_asset(
                        asset_id,
                        path=self.db_path,
                    )
                assets_by_job[int(job.id)] = self._asset_cache[asset_id]
        except Exception as exc:
            self._set_notice("部分历史记录无法读取：%s" % _user_error(exc), "#cf222e")
            return

        row = SuiteGlobalHistoryRoundRow(round_info, jobs, assets_by_job)
        row.previewRequested.connect(self._preview_round)
        row.exportRequested.connect(self._export_round)
        self.history_layout.addWidget(row)
        self._history_rows.append(row)
        self._round_count += 1
        self._available_image_count += len(row._usable_entries)

    def _preview_round(self, row, start_index):
        entries = [
            (
                asset.local_path,
                str(getattr(job, "job_type", "套图") or "套图"),
            )
            for job, asset in row._usable_entries
        ]
        if not entries:
            self._set_notice("本轮没有可预览的本地生成图片。", "#9a6700")
            return
        title = "商品ID %s" % str(getattr(row.round_info, "item_id", "") or "临时草稿")
        ProductSuiteRoundPreviewDialog(
            entries,
            start_index=start_index,
            title=title,
            parent=self,
        ).exec()

    def _export_round(self, row):
        if self._export_worker is not None:
            self._set_notice("正在导出另一轮图片，请稍候。", "#9a6700")
            return
        parent_dir = QFileDialog.getExistingDirectory(self, "选择导出父目录")
        if not parent_dir:
            return
        worker = ProductSuiteHistoryExportWorker(
            row.round_info.project_id,
            row.round_info.generation_round_key,
            parent_dir,
            db_path=self.db_path,
        )
        thread = run_worker(worker, thread_name="商品套图历史导出", start=False)
        token = id(thread)
        _PRODUCT_SUITE_THREAD_REFS[token] = (thread, worker)
        thread.finished.connect(lambda token=token: _PRODUCT_SUITE_THREAD_REFS.pop(token, None))
        worker.finished.connect(self._on_export_finished)
        worker.cancelled.connect(self._on_export_cancelled)
        worker.failed.connect(self._on_export_failed)
        self._export_worker = worker
        self._export_thread = thread
        self._export_error_handled = False
        self._set_export_controls(True)
        thread.start()

    def _on_export_finished(self, summary):
        if dict(summary or {}).get("ok") is False:
            if not self._export_error_handled:
                self._on_export_failed(-1, dict(summary or {}).get("error") or "导出失败")
            return
        self._reset_export_state()
        summary = dict(summary or {})
        if summary.get("cancelled"):
            self._set_notice("导出已停止，已完成的图片保留在导出目录中。", "#9a6700")
            return
        file_count = int(summary.get("file_count", 0) or 0)
        skipped_count = int(summary.get("skipped_count", 0) or 0)
        message = "本轮已导出%d张生成图片" % file_count
        if skipped_count:
            message += "，略过%d张不可用图片" % skipped_count
        self._set_notice(message, "#1a7f37")
        target_dir = str(summary.get("target_dir") or "")
        if not target_dir:
            return
        box = QMessageBox(self)
        box.setWindowTitle("导出完成")
        box.setText(message)
        open_button = box.addButton("打开目录", QMessageBox.AcceptRole)
        box.addButton("确定", QMessageBox.RejectRole)
        box.setDefaultButton(open_button)
        box.exec()
        if box.clickedButton() is open_button:
            try:
                file_manager.open_in_file_manager(target_dir)
            except Exception as exc:
                self._set_notice("打开导出目录失败：%s" % _user_error(exc), "#cf222e")

    def _on_export_cancelled(self, summary):
        self._reset_export_state()
        self._set_notice("导出已停止，已完成的图片保留在导出目录中。", "#9a6700")

    def _on_export_failed(self, _row, error):
        if self._export_error_handled:
            return
        self._export_error_handled = True
        self._reset_export_state()
        self._set_notice("导出本轮失败：%s" % _user_error(error), "#cf222e")

    def _reset_export_state(self):
        self._export_worker = None
        self._export_thread = None
        self._set_export_controls(False)

    def _set_export_controls(self, exporting):
        for row in list(self._history_rows):
            try:
                row.set_exporting(exporting)
            except RuntimeError:
                continue

    def _update_summary(self):
        refreshed = time.strftime("%H:%M:%S")
        self.summary_label.setText(
            "已加载 %d 轮 · 可预览图片 %d 张 · 最近刷新 %s"
            % (self._round_count, self._available_image_count, refreshed)
        )

    def _clear_history_content(self):
        self._history_rows = []
        while self.history_layout.count():
            item = self.history_layout.takeAt(0)
            widget = item.widget()
            if widget is not None:
                widget.deleteLater()

    def _set_error(self, message):
        self._clear_history_content()
        self._set_notice(message, "#cf222e")
        self.load_more_button.hide()
        self.refresh_button.setEnabled(True)

    def _set_notice(self, text, color="#57606a"):
        self.notice_label.setText(str(text))
        self.notice_label.setStyleSheet("color: %s; padding: 8px 0;" % color)
        self.notice_label.show()

    def _show_empty_state(self):
        empty = QLabel("暂无套图历史生成记录，完成套图生成后会自动出现在这里")
        empty.setObjectName("suiteGlobalHistoryEmptyLabel")
        empty.setAlignment(Qt.AlignCenter)
        empty.setStyleSheet("color: #6b7280; padding: 56px;")
        self.history_layout.addWidget(empty)

    def closeEvent(self, event):
        if self._export_worker is not None:
            self._export_worker.cancel()
        self._clear_history_content()
        super().closeEvent(event)


@dataclass
class SuiteTaskState:
    key: int
    serial: int
    account_alias: str = ""
    item_id: str = ""
    project_id: int = None
    project_binding_state: str = ""
    prompt: str = ""
    last_saved_prompt: str = ""
    settings: dict = field(default_factory=product_suite.default_suite_settings)
    current_job_ids: list = field(default_factory=list)
    current_generation_round_key: str = ""
    generation_job_ids: list = field(default_factory=list)
    generation_mode: str = "batch"
    generation_retry_job_id: int = None
    generation_round_key: str = ""
    worker: object = None
    thread: object = None
    generation_run_token: str = ""
    generation_stop_requested: bool = False
    generation_terminal_streak: int = 0
    pull_worker: object = None
    pull_thread: object = None
    pull_run_token: str = ""
    pull_stop_requested: bool = False
    pull_cleanup_mode: str = "keep"
    pull_before_asset_ids: set = field(default_factory=set)
    pull_before_asset_states: list = field(default_factory=list)
    pull_asset_ids: set = field(default_factory=set)
    pull_download_asset_ids: set = field(default_factory=set)
    pull_download_failed: int = 0
    pull_started_at: float = None
    import_worker: object = None
    import_thread: object = None
    import_created_draft: bool = False
    ai_worker: object = None
    ai_thread: object = None
    download_queue: list = field(default_factory=list)
    downloads: dict = field(default_factory=dict)
    download_tokens: dict = field(default_factory=dict)
    done: int = 0
    failed: int = 0
    total: int = 0
    started_at: float = None
    ai_started_at: float = None
    ai_prompt_snapshot: str = ""
    pending_ai_text: str = ""
    undo_records: list = field(default_factory=list)
    def generation_running(self):
        return self.worker is not None

    def pull_running(self):
        return bool(self.pull_run_token)


class ProductSuiteTab(QWidget):
    """Native PySide6 product-suite UI backed by image_studio services."""

    PLATFORM_OPTIONS = product_suite.PLATFORMS
    COUNTRY_OPTIONS = product_suite.COUNTRIES
    LANGUAGE_OPTIONS = product_suite.LANGUAGES

    def __init__(
        self,
        parent=None,
        db_path=None,
        config=None,
        config_path=None,
        status_callback=None,
    ):
        super().__init__(parent)
        self.setObjectName("productSuiteTab")
        self.config = appconfig.load_config(config_path or appconfig.CONFIG_PATH) if config is None else config
        self.db_path = db_path or appconfig.db_path(self.config)
        self.config_path = config_path or self.config.get("config_path") or appconfig.CONFIG_PATH
        self.cmhub_config_path = self.config.get("cmhub_config_path") or appconfig.cmhub_config_file_path(self.config)
        self.product_suite_prompt_path = appconfig.product_suite_prompt_path(self.config)
        self.status_callback = status_callback
        self.accounts = []
        self._states = {}
        self._retired_states = []
        self._next_key = 1
        self._next_serial = 1
        self._displayed_state = None
        self._prompt_save_timers = {}
        self._generation_run_states = {}
        self._pull_run_states = {}
        self._original_list_context = None
        self._loading = False
        self._result_refresh_pending = False
        self._prompt_template_init_error = ""
        self._history_dialog = None

        try:
            prompts.ensure_default_product_suite_prompt(self.product_suite_prompt_path)
        except prompts.PromptError as exc:
            self._prompt_template_init_error = str(exc)

        self._build_ui()
        self._connect_signals()
        self.refresh_accounts()
        self._restore_draft_tasks()
        if not self._states:
            self.add_task(inherit=False)
        self.elapsed_timer = QTimer(self)
        self.elapsed_timer.setInterval(1000)
        self.elapsed_timer.timeout.connect(self._refresh_elapsed)
        self.elapsed_timer.start()
        self.generation_watchdog_timer = QTimer(self)
        self.generation_watchdog_timer.setInterval(750)
        self.generation_watchdog_timer.timeout.connect(self._check_generation_watchdogs)
        self.generation_watchdog_timer.start()
        if self._prompt_template_init_error:
            self._status(self._prompt_template_init_error, "danger")

    def _build_ui(self):
        root = QVBoxLayout(self)
        root.setContentsMargins(10, 8, 10, 8)
        root.setSpacing(8)
        root.addWidget(self._build_task_bar())
        root.addWidget(self._build_context_bar())

        self.main_splitter = QSplitter(Qt.Horizontal)
        self.main_splitter.setObjectName("suiteMainSplitter")
        self.main_splitter.addWidget(self._build_config_panel())
        self.main_splitter.addWidget(self._build_results_panel())
        self.main_splitter.setStretchFactor(0, 2)
        self.main_splitter.setStretchFactor(1, 3)
        self.main_splitter.setSizes([430, 700])
        root.addWidget(self.main_splitter, 1)

    def _build_task_bar(self):
        frame = QFrame()
        layout = QHBoxLayout(frame)
        layout.setContentsMargins(0, 0, 0, 0)
        self.task_tabs = QTabBar()
        self.task_tabs.setObjectName("suiteTaskTabs")
        self.task_tabs.setTabsClosable(True)
        self.task_tabs.setMovable(True)
        self.task_tabs.setExpanding(False)
        self.task_tabs.setFixedHeight(36)
        self.task_tabs.setStyleSheet(
            """
            QTabBar#suiteTaskTabs::tab {
                min-width: 96px;
                min-height: 26px;
                max-height: 26px;
                padding: 3px 10px;
                margin-right: 4px;
                border: 1px solid #c9d1d9;
                border-bottom-color: #b8c0ca;
                background: #f4f6f8;
                color: #24292f;
            }
            QTabBar#suiteTaskTabs::tab:selected {
                background: #ffffff;
                border-color: #687785;
                border-bottom-color: #ffffff;
                font-weight: 600;
            }
            QTabBar#suiteTaskTabs::tab:hover:!selected {
                background: #eaf2ff;
            }
            """
        )
        layout.addWidget(self.task_tabs, 1)
        self.add_task_button = QToolButton()
        self.add_task_button.setObjectName("suiteAddTaskButton")
        self.add_task_button.setText("+")
        self.add_task_button.setToolTip("新建套图任务")
        self.add_task_button.setAccessibleName("新建套图任务")
        self.add_task_button.setMinimumSize(32, 32)
        layout.addWidget(self.add_task_button)
        return frame

    def _build_context_bar(self):
        frame = QFrame()
        frame.setObjectName("suiteContextBar")
        layout = QHBoxLayout(frame)
        self.context_bar_layout = layout
        layout.setContentsMargins(10, 7, 10, 7)
        layout.setSpacing(8)
        self.history_button = QPushButton("历史生成")
        self.history_button.setObjectName("suiteHistoryButton")
        self.history_button.setToolTip("查看当前商品的历史生成记录")
        layout.addWidget(self.history_button)
        self.open_folder_button = QPushButton("打开结果文件夹")
        self.open_folder_button.setObjectName("suiteOpenFolderButton")
        layout.addWidget(self.open_folder_button)
        self.add_images_button = QPushButton("添加图片")
        self.add_images_button.setObjectName("suiteAddImagesButton")
        self.add_images_button.setAccessibleName("添加商品原图")
        self.add_images_button.setToolTip("添加本地商品原图")
        self.add_images_button.setStyleSheet(
            "QPushButton#suiteAddImagesButton { "
            "color: #0969da; border: 1px solid #0969da; "
            "background-color: #eef4ff; font-weight: 600; "
            "}"
            "QPushButton#suiteAddImagesButton:hover { background-color: #dbeafe; }"
            "QPushButton#suiteAddImagesButton:pressed { background-color: #c7ddff; }"
            "QPushButton#suiteAddImagesButton:disabled { "
            "color: #8c959f; border-color: #d8dee4; background-color: #f6f8fa; "
            "}"
        )
        layout.addWidget(self.add_images_button)
        self.item_id_hint_label = QLabel("请输入正确的商品ID")
        self.item_id_hint_label.setObjectName("suiteItemIdHintLabel")
        self.item_id_hint_label.setStyleSheet("color: #9a6700; font-weight: 600;")
        self.item_id_hint_label.setToolTip("未绑定正式商品ID时，可添加本地图片和生成套图，但不能拉取蝦皮主图")
        self.item_id_hint_label.setAccessibleName("商品ID提示")
        self.item_id_hint_label.setSizePolicy(QSizePolicy.Maximum, QSizePolicy.Preferred)
        layout.addWidget(self.item_id_hint_label)
        layout.addStretch(1)
        layout.addWidget(QLabel("账号"))
        self.account_combo = QComboBox()
        self.account_combo.setObjectName("suiteAccountCombo")
        self.account_combo.setMinimumWidth(120)
        self.account_combo.setMaximumWidth(160)
        self.account_combo.setMinimumContentsLength(10)
        layout.addWidget(self.account_combo)
        layout.addWidget(QLabel("商品ID"))
        self.item_id_edit = QLineEdit()
        self.item_id_edit.setObjectName("suiteItemIdEdit")
        self.item_id_edit.setPlaceholderText("输入商品ID")
        item_width = max(
            120,
            min(140, self.item_id_edit.fontMetrics().horizontalAdvance("0" * 13) + 30),
        )
        self.item_id_edit.setMinimumWidth(item_width)
        self.item_id_edit.setMaximumWidth(item_width)
        layout.addWidget(self.item_id_edit)
        self.pull_button = QPushButton("拉取蝦皮主图")
        self.pull_button.setObjectName("suitePullButton")
        layout.addWidget(self.pull_button)
        return frame

    def _build_config_panel(self):
        panel = QWidget()
        panel.setMinimumWidth(400)
        layout = QVBoxLayout(panel)
        layout.setContentsMargins(0, 0, 4, 0)
        layout.setSpacing(7)

        scroll = QScrollArea()
        scroll.setObjectName("suiteConfigScroll")
        scroll.setWidgetResizable(True)
        scroll.setFrameShape(QFrame.NoFrame)
        content = QWidget()
        self.config_layout = QVBoxLayout(content)
        self.config_layout.setContentsMargins(4, 2, 8, 2)
        self.config_layout.setSpacing(9)
        self.config_layout.addWidget(self._build_original_section())
        self.config_layout.addWidget(self._build_settings_section())
        self.config_layout.addWidget(self._build_prompt_section())
        self.config_layout.addWidget(self._build_category_section())
        self.config_layout.addStretch(1)
        scroll.setWidget(content)
        layout.addWidget(scroll, 1)

        self.generate_button = QPushButton("生成套图（0）")
        self.generate_button.setObjectName("suiteGenerateButton")
        self.generate_button.setMinimumHeight(42)
        self.generate_button.setStyleSheet(
            "QPushButton { background: #2f6fed; color: white; border-color: #2459c4; font-weight: 600; }"
            "QPushButton:hover { background: #245fce; }"
        )
        layout.addWidget(self.generate_button)
        self.generate_helper_label = QLabel("建议填写产品名称、核心卖点、目标人群、使用场景与禁用元素")
        self.generate_helper_label.setWordWrap(True)
        self.generate_helper_label.setStyleSheet("color: #6b7280;")
        layout.addWidget(self.generate_helper_label)
        return panel

    def _build_original_section(self):
        frame = QFrame()
        layout = QVBoxLayout(frame)
        layout.setContentsMargins(0, 0, 0, 0)
        title_row = QHBoxLayout()
        title = QLabel("商品原图")
        title.setStyleSheet("font-weight: 600;")
        title_row.addWidget(title)
        self.original_count_label = QLabel("0/16")
        self.original_count_label.setStyleSheet("color: #6b7280;")
        title_row.addWidget(self.original_count_label)
        title_row.addStretch(1)
        self.original_selected_label = QLabel("已选 0 张")
        self.original_selected_label.setObjectName("suiteOriginalSelectedLabel")
        self.original_selected_label.setStyleSheet("color: #6b7280;")
        title_row.addWidget(self.original_selected_label)
        self.select_all_originals_button = QToolButton()
        self.select_all_originals_button.setObjectName("suiteSelectAllOriginalsButton")
        self.select_all_originals_button.setText("全选")
        self.select_all_originals_button.setToolTip("选择当前商品的全部原图")
        self.select_all_originals_button.setAccessibleName("全选商品原图")
        self.select_all_originals_button.setMinimumSize(48, 28)
        title_row.addWidget(self.select_all_originals_button)
        self.invert_originals_button = QToolButton()
        self.invert_originals_button.setObjectName("suiteInvertOriginalsButton")
        self.invert_originals_button.setText("反选")
        self.invert_originals_button.setToolTip("反转当前商品原图的勾选状态")
        self.invert_originals_button.setAccessibleName("反选商品原图")
        self.invert_originals_button.setMinimumSize(48, 28)
        title_row.addWidget(self.invert_originals_button)
        layout.addLayout(title_row)
        self.original_list = ProductOriginalList()
        layout.addWidget(self.original_list)
        return frame

    def _build_settings_section(self):
        frame = QFrame()
        layout = QVBoxLayout(frame)
        layout.setContentsMargins(0, 0, 0, 0)
        title = QLabel("生成设置")
        title.setStyleSheet("font-weight: 600;")
        layout.addWidget(title)
        grid = QGridLayout()
        self.settings_grid = grid
        grid.setContentsMargins(0, 0, 0, 0)
        grid.setHorizontalSpacing(6)
        grid.setVerticalSpacing(3)
        settings = (
            (
                "platform_label",
                "platform_combo",
                "平台",
                "suitePlatformLabel",
                "suitePlatformCombo",
                self.PLATFORM_OPTIONS,
            ),
            (
                "country_label",
                "country_combo",
                "站点",
                "suiteCountryLabel",
                "suiteCountryCombo",
                self.COUNTRY_OPTIONS,
            ),
            (
                "language_label",
                "language_combo",
                "语言",
                "suiteLanguageLabel",
                "suiteLanguageCombo",
                self.LANGUAGE_OPTIONS,
            ),
            (
                "ratio_label",
                "ratio_combo",
                "比例",
                "suiteRatioLabel",
                "suiteRatioCombo",
                product_suite.RATIOS,
            ),
        )
        for column, setting in enumerate(settings):
            label_attr, combo_attr, text, label_name, combo_name, values = setting
            label = QLabel(text)
            label.setObjectName(label_name)
            setattr(self, label_attr, label)
            combo = self._value_combo(combo_name, text, values)
            setattr(self, combo_attr, combo)
            grid.addWidget(label, 0, column)
            grid.addWidget(combo, 1, column)
            grid.setColumnStretch(column, 1)
        layout.addLayout(grid)
        self.per_image_checkbox = QCheckBox("每张上传图分别作为主图生成")
        self.per_image_checkbox.setObjectName("suitePerImageCheckbox")
        layout.addWidget(self.per_image_checkbox)
        return frame

    def _value_combo(self, object_name, label, values):
        combo = QComboBox()
        combo.setObjectName(object_name)
        combo.setToolTip("%s设置" % label)
        combo.setAccessibleName("%s设置" % label)
        combo.setSizePolicy(QSizePolicy.Ignored, QSizePolicy.Fixed)
        for value in values:
            combo.addItem(value, value)
            combo.setItemData(combo.count() - 1, value, Qt.ToolTipRole)
        return combo

    def _build_prompt_section(self):
        frame = QFrame()
        layout = QVBoxLayout(frame)
        layout.setContentsMargins(0, 0, 0, 0)
        title_row = QHBoxLayout()
        self.prompt_title_layout = title_row
        title = QLabel("商品卖点与要求")
        self.prompt_title_label = title
        title.setStyleSheet("font-weight: 600;")
        title_row.addWidget(title)
        self.ai_write_button = QPushButton("AI 帮写")
        self.ai_write_button.setObjectName("suiteAiWriteButton")
        title_row.addWidget(self.ai_write_button)
        self.ai_cancel_button = QPushButton("取消")
        self.ai_cancel_button.setObjectName("suiteAiCancelButton")
        self.ai_cancel_button.hide()
        title_row.addWidget(self.ai_cancel_button)
        title_row.addStretch(1)
        self.prompt_settings_button = QPushButton("提示词设置")
        self.prompt_settings_button.setObjectName("suitePromptSettingsButton")
        self.prompt_settings_button.setToolTip("编辑并预览套图最终提示词")
        title_row.addWidget(self.prompt_settings_button)
        layout.addLayout(title_row)
        self.prompt_edit = AutoHeightPlainTextEdit()
        self.prompt_edit.setObjectName("suitePromptEdit")
        self.prompt_edit.setPlaceholderText("输入产品名称、卖点、目标人群、使用场景和禁用元素")
        layout.addWidget(self.prompt_edit)
        helper = QLabel("内容越具体，生成的商品套图越稳定。AI 帮写不会阻塞其他套图任务。")
        helper.setWordWrap(True)
        helper.setStyleSheet("color: #6b7280;")
        layout.addWidget(helper)
        return frame

    def _build_category_section(self):
        frame = QFrame()
        layout = QVBoxLayout(frame)
        layout.setContentsMargins(0, 0, 0, 0)
        title_row = QHBoxLayout()
        title = QLabel("套图结构配置")
        title.setStyleSheet("font-weight: 600;")
        title_row.addWidget(title)
        title_row.addStretch(1)
        self.category_total_label = QLabel("合计 0 张")
        self.category_total_label.setStyleSheet("color: #2f6fed; font-weight: 600;")
        title_row.addWidget(self.category_total_label)
        layout.addLayout(title_row)
        self.category_grid = QGridLayout()
        self.category_grid.setContentsMargins(0, 0, 0, 0)
        self.category_grid.setHorizontalSpacing(0)
        self.category_grid.setVerticalSpacing(3)
        self.category_grid.setColumnStretch(0, 1)
        self.category_rows = {}
        layout.addLayout(self.category_grid)
        self.add_category_button = QPushButton("添加自定义分类")
        self.add_category_button.setObjectName("suiteAddCategoryButton")
        layout.addWidget(self.add_category_button)
        self.custom_category_edit = QLineEdit()
        self.custom_category_edit.setObjectName("suiteCustomCategoryEdit")
        self.custom_category_edit.setPlaceholderText("输入分类名称后按回车")
        self.custom_category_edit.hide()
        layout.addWidget(self.custom_category_edit)
        return frame

    def _build_results_panel(self):
        panel = QWidget()
        layout = QVBoxLayout(panel)
        layout.setContentsMargins(4, 0, 0, 0)
        layout.setSpacing(7)
        toolbar = QHBoxLayout()
        self.results_toolbar_layout = toolbar
        title = QLabel("生成结果")
        title.setStyleSheet("font-weight: 600; font-size: 15px;")
        toolbar.addWidget(title)
        self.result_summary_label = QLabel("共 0 张 · 成功 0 张")
        self.result_summary_label.setObjectName("suiteResultSummaryLabel")
        self.result_summary_label.setStyleSheet(
            "background: #eef4ff; color: #2459c4; padding: 3px 8px; border-radius: 4px;"
        )
        toolbar.addWidget(self.result_summary_label)
        toolbar.addStretch(1)
        self.undo_button = QPushButton("撤销删除")
        self.undo_button.setObjectName("suiteUndoButton")
        self.undo_button.hide()
        toolbar.addWidget(self.undo_button)
        self.more_button = QToolButton()
        self.more_button.setText("⋯")
        self.more_button.setToolTip("更多操作")
        self.more_button.setAccessibleName("更多操作")
        self.more_button.setMinimumSize(32, 32)
        toolbar.addWidget(self.more_button)
        layout.addLayout(toolbar)

        self.result_scroll = QScrollArea()
        self.result_scroll.setObjectName("suiteResultScroll")
        self.result_scroll.setWidgetResizable(True)
        self.result_scroll.setFrameShape(QFrame.StyledPanel)
        self.result_content = QWidget()
        self.result_grid = QGridLayout(self.result_content)
        self.result_grid.setContentsMargins(12, 12, 12, 12)
        self.result_grid.setSpacing(10)
        self.result_grid.setAlignment(Qt.AlignTop | Qt.AlignLeft)
        self.result_scroll.setWidget(self.result_content)
        layout.addWidget(self.result_scroll, 1)

        bottom = QHBoxLayout()
        self.progress_bar = QProgressBar()
        self.progress_bar.setObjectName("suiteProgressBar")
        self.progress_bar.setRange(0, 1)
        self.progress_bar.setValue(0)
        self.progress_bar.setTextVisible(False)
        bottom.addWidget(self.progress_bar, 1)
        self.elapsed_label = QLabel("套图 0/0（0秒） · 失败 0")
        self.elapsed_label.setObjectName("suiteElapsedLabel")
        self.elapsed_label.setMinimumWidth(190)
        bottom.addWidget(self.elapsed_label)
        layout.addLayout(bottom)
        return panel

    def _connect_signals(self):
        self.task_tabs.currentChanged.connect(self._on_task_changed)
        self.task_tabs.tabCloseRequested.connect(self.close_task)
        self.add_task_button.clicked.connect(lambda: self.add_task(inherit=True))
        self.account_combo.currentIndexChanged.connect(self._on_account_changed)
        self.item_id_edit.editingFinished.connect(self._on_item_finished)
        self.pull_button.clicked.connect(self.pull_main_images)
        self.add_images_button.clicked.connect(self.choose_images)
        self.original_list.filesDropped.connect(self.import_files)
        self.original_list.clipboardImage.connect(self.import_clipboard_image)
        self.original_list.orderChanged.connect(self.reorder_originals)
        self.original_list.deleteRequested.connect(self.delete_original)
        self.original_list.deleteAssetsRequested.connect(self.delete_originals)
        self.original_list.checkedAssetsChanged.connect(self._on_original_checks_changed)
        self.original_list.itemClicked.connect(self._on_original_clicked)
        self.original_list.itemDoubleClicked.connect(self._preview_original)
        self.select_all_originals_button.clicked.connect(
            lambda checked=False: self.original_list.select_all_assets()
        )
        self.invert_originals_button.clicked.connect(
            lambda checked=False: self.original_list.invert_asset_checks()
        )
        for combo in (
            self.platform_combo,
            self.country_combo,
            self.language_combo,
            self.ratio_combo,
        ):
            combo.currentIndexChanged.connect(self._on_settings_changed)
        self.per_image_checkbox.toggled.connect(self._on_settings_changed)
        self.prompt_edit.textChanged.connect(self._on_prompt_changed)
        self.ai_write_button.clicked.connect(self.start_ai_write)
        self.ai_cancel_button.clicked.connect(self.cancel_ai_write)
        self.prompt_settings_button.clicked.connect(self.open_prompt_settings)
        self.add_category_button.clicked.connect(self.add_custom_category)
        self.custom_category_edit.returnPressed.connect(self._commit_custom_category)
        self.custom_category_edit.editingFinished.connect(self._finish_custom_category_edit)
        self.generate_button.clicked.connect(self.toggle_generation)
        self.history_button.clicked.connect(self.open_history_dialog)
        self.open_folder_button.clicked.connect(self.open_project_folder)
        self.undo_button.clicked.connect(self.undo_delete)
        self.more_button.clicked.connect(self._show_more_menu)

    def _status(self, message, level=None):
        _emit_status(self.status_callback, message, level=level)

    def _message(self, title, message, icon=QMessageBox.Warning):
        box = QMessageBox(self)
        box.setIcon(icon)
        box.setWindowTitle(str(title))
        box.setText(str(message))
        box.exec()

    def _confirm(
        self,
        title,
        message,
        *,
        destructive=False,
        confirm_text="确认",
        cancel_text="取消",
    ):
        box = QMessageBox(self)
        box.setIcon(QMessageBox.Warning if destructive else QMessageBox.Question)
        box.setWindowTitle(str(title))
        box.setText(str(message))
        confirm_button = box.addButton(str(confirm_text), QMessageBox.AcceptRole)
        box.addButton(str(cancel_text), QMessageBox.RejectRole)
        if not destructive:
            box.setDefaultButton(confirm_button)
        box.exec()
        return box.clickedButton() is confirm_button

    def _confirm_new_generation_history(self, state, summary):
        item_id = str(state.item_id or "临时草稿")
        account_text = self._account_context_label(state)
        latest = str(summary.latest_succeeded_at or "").replace("T", " ")
        lines = [
            "%s" % account_text,
            "商品ID：%s" % item_id,
            "该商品已有成功套图：%d轮，%d张。"
            % (
                int(summary.successful_round_count),
                int(summary.successful_image_count),
            ),
        ]
        if latest:
            lines.append("最近成功时间：%s" % latest)
        lines.append("继续会创建新一轮生成，已有历史结果会保留。")

        box = QMessageBox(self)
        box.setIcon(QMessageBox.Warning)
        box.setWindowTitle("已有套图生成记录")
        box.setText("\n".join(lines))
        history_button = box.addButton("查看历史", QMessageBox.ActionRole)
        continue_button = box.addButton("继续生成新一轮", QMessageBox.AcceptRole)
        cancel_button = box.addButton("取消", QMessageBox.RejectRole)
        box.setDefaultButton(cancel_button)
        box.setEscapeButton(cancel_button)
        box.exec()
        clicked = box.clickedButton()
        if clicked is history_button:
            return "history"
        if clicked is continue_button:
            return "continue"
        return "cancel"

    def refresh_accounts(self):
        selected = self.account_combo.currentData()
        try:
            self.accounts = accounts.list_accounts(path=self.db_path, config=self.config)
        except Exception as exc:
            self.accounts = []
            self._status("商品套图账号读取失败：%s" % _user_error(exc), "danger")
        self._loading = True
        try:
            self.account_combo.clear()
            for account in self.accounts:
                text = "%s（%s）" % (account.account_name, account.alias)
                self.account_combo.addItem(text, account.alias)
                self.account_combo.setItemData(
                    self.account_combo.count() - 1,
                    text,
                    Qt.ToolTipRole,
                )
            if not self.accounts:
                self.account_combo.addItem("暂无账号，请先到④账号管理添加", "")
            index = self.account_combo.findData(selected)
            if index >= 0:
                self.account_combo.setCurrentIndex(index)
        finally:
            self._loading = False
        self._update_account_tooltip()

    def _append_task_state(self, state, title=None):
        self._states[state.key] = state
        index = self.task_tabs.addTab(title or "套图任务 %d" % state.serial)
        self.task_tabs.setTabData(index, state.key)
        if self.task_tabs.currentIndex() == index:
            self._on_task_changed(index)
        else:
            self.task_tabs.setCurrentIndex(index)
        return state

    def _restore_draft_tasks(self):
        try:
            projects = image_studio.list_recoverable_draft_projects(path=self.db_path)
        except Exception as exc:
            self._status("临时草稿恢复失败：%s" % _user_error(exc), "danger")
            return
        for project in projects:
            state = SuiteTaskState(
                key=self._next_key,
                serial=self._next_serial,
                account_alias=project.account_alias,
                project_id=int(project.id),
                project_binding_state=project.binding_state,
                prompt=str(project.draft_prompt or ""),
                last_saved_prompt=str(project.draft_prompt or ""),
                settings=product_suite.normalize_suite_settings(
                    image_studio.project_suite_settings(project)
                ),
            )
            self._next_key += 1
            self._next_serial += 1
            self._append_task_state(state, "临时草稿 %d" % state.serial)
        if projects:
            self._status("已恢复%d个临时草稿" % len(projects), "info")

    def add_task(self, checked=False, inherit=True):
        source = self._displayed_state if inherit else None
        initial_settings = (
            source.settings
            if source is not None
            else appconfig.product_suite_last_settings(self.config)
        )
        valid_aliases = {account.alias for account in self.accounts}
        recent_alias = appconfig.product_suite_last_account_alias(self.config)
        account_alias = source.account_alias if source is not None else recent_alias
        if account_alias not in valid_aliases:
            account_alias = self.accounts[0].alias if self.accounts else ""
            if source is None and account_alias != recent_alias:
                self._persist_last_account_alias(account_alias)
        state = SuiteTaskState(
            key=self._next_key,
            serial=self._next_serial,
            account_alias=account_alias,
            prompt=(source.prompt if source is not None else ""),
            settings=product_suite.normalize_suite_settings(initial_settings),
        )
        self._next_key += 1
        self._next_serial += 1
        return self._append_task_state(state)

    def _set_task_title(self, state):
        for index in range(self.task_tabs.count()):
            if self.task_tabs.tabData(index) == state.key:
                title = "临时草稿 %d" % state.serial if self._is_draft_state(state) else "套图任务 %d" % state.serial
                self.task_tabs.setTabText(index, title)
                return

    def close_task(self, index):
        key = self.task_tabs.tabData(index)
        state = self._states.get(key)
        if state is None:
            return
        if state is self._displayed_state:
            self._save_controls_to_state(state)
        self._flush_prompt_save(state)
        project = self._state_project(state)
        draft_action = None
        if image_studio.is_draft_project(project) and image_studio.project_has_content(
            project.id,
            path=self.db_path,
        ):
            draft_action = self._draft_close_action()
            if draft_action == "cancel":
                return
        if state.generation_running():
            if not self._confirm(
                "关闭套图任务",
                "任务生成中，关闭会取消该任务。确认关闭吗？",
                destructive=True,
            ):
                return
            state.generation_stop_requested = True
            state.worker.cancel()
        if state.ai_worker is not None:
            state.ai_worker.cancel()
        if state.pull_running():
            state.pull_stop_requested = True
            state.pull_cleanup_mode = "keep"
            if state.pull_worker is not None:
                state.pull_worker.cancel()
            self._cancel_pull_downloads(state)
        if image_studio.is_draft_project(project):
            if draft_action == "delete":
                try:
                    image_studio.soft_delete_project(
                        project.id,
                        reason="用户关闭临时草稿",
                        path=self.db_path,
                    )
                except Exception as exc:
                    self._message("删除临时草稿失败", _user_error(exc))
                    return
                self._status("临时草稿已删除", "success")
            else:
                try:
                    image_studio.discard_empty_draft_project(project.id, path=self.db_path)
                except Exception as exc:
                    self._status("清理空临时草稿失败：%s" % _user_error(exc), "danger")
        self._release_prompt_save_timer(state)
        if state.generation_run_token:
            self._generation_run_states.pop(state.generation_run_token, None)
        if state.pull_run_token:
            self._pull_run_states.pop(state.pull_run_token, None)
        self._retired_states.append(state)
        self._states.pop(state.key, None)
        self.task_tabs.removeTab(index)
        if self.task_tabs.count() == 0:
            self.add_task(inherit=False)

    def _draft_close_action(self):
        box = QMessageBox(self)
        box.setIcon(QMessageBox.Question)
        box.setWindowTitle("关闭临时草稿")
        box.setText("当前临时草稿包含图片或生成记录。请选择关闭后的处理方式。")
        keep_button = box.addButton("保留草稿", QMessageBox.AcceptRole)
        delete_button = box.addButton("删除草稿", QMessageBox.DestructiveRole)
        cancel_button = box.addButton("取消", QMessageBox.RejectRole)
        box.setDefaultButton(keep_button)
        box.exec()
        clicked = box.clickedButton()
        if clicked is keep_button:
            return "keep"
        if clicked is delete_button:
            return "delete"
        if clicked is cancel_button:
            return "cancel"
        return "cancel"

    def _state_for_index(self, index):
        if index < 0:
            return None
        return self._states.get(self.task_tabs.tabData(index))

    def _on_task_changed(self, index):
        if self._loading:
            return
        if self._displayed_state is not None:
            self._save_controls_to_state(self._displayed_state)
            self._flush_prompt_save(self._displayed_state)
        state = self._state_for_index(index)
        self._displayed_state = state
        if state is not None:
            self._load_state(state)
            self._offer_pending_ai_result(state)

    def _save_controls_to_state(self, state):
        if self._loading or state is None:
            return
        state.account_alias = str(self.account_combo.currentData() or "")
        state.item_id = self.item_id_edit.text().strip()
        state.prompt = self.prompt_edit.toPlainText()
        state.settings = self._settings_from_controls()

    def _load_state(self, state):
        self._sync_state_project_binding(state)
        self._restore_current_generation_results(state)
        self._loading = True
        try:
            self.custom_category_edit.hide()
            self.add_category_button.show()
            index = self.account_combo.findData(state.account_alias)
            if index >= 0:
                self.account_combo.setCurrentIndex(index)
            self.item_id_edit.setText(state.item_id)
            self.prompt_edit.setPlainText(state.prompt)
            self._set_combo_value(self.platform_combo, state.settings.get("platform"))
            self._set_combo_value(self.country_combo, state.settings.get("country"))
            self._set_combo_value(self.language_combo, state.settings.get("language"))
            self._set_combo_value(self.ratio_combo, state.settings.get("ratio"))
            self.per_image_checkbox.setChecked(bool(state.settings.get("per_image_primary")))
        finally:
            self._loading = False
        self._refresh_originals(state)
        self._rebuild_categories(state)
        self._refresh_results(state)
        self._apply_running_state(state)
        self._refresh_elapsed()

    def _set_combo_value(self, combo, value):
        index = combo.findData(value)
        if index >= 0:
            combo.setCurrentIndex(index)

    def _settings_from_controls(self):
        current = self._displayed_state.settings if self._displayed_state else {}
        settings = dict(current or {})
        settings.update(
            {
                "platform": self.platform_combo.currentData(),
                "country": self.country_combo.currentData(),
                "language": self.language_combo.currentData(),
                "ratio": self.ratio_combo.currentData(),
                "per_image_primary": self.per_image_checkbox.isChecked(),
            }
        )
        return product_suite.normalize_suite_settings(settings)

    def _on_account_changed(self, index):
        self._update_account_tooltip()
        if self._loading or self._displayed_state is None:
            return
        state = self._displayed_state
        alias = str(self.account_combo.currentData() or "")
        if state.project_id is not None and alias != state.account_alias:
            if self._is_draft_state(state):
                self._message(
                    "不能切换账号",
                    "临时草稿已关联当前账号。请先绑定正式商品ID，或关闭草稿后再切换账号。",
                )
                self._loading = True
                try:
                    self._set_combo_value(self.account_combo, state.account_alias)
                finally:
                    self._loading = False
                return
            if not self._confirm(
                "切换账号",
                "切换账号后，当前任务会改为新的账号与商品上下文。确认继续吗？",
            ):
                self._loading = True
                try:
                    self._set_combo_value(self.account_combo, state.account_alias)
                finally:
                    self._loading = False
                return
            self._clear_project_binding(state)
        state.account_alias = alias
        self._persist_last_account_alias(alias)
        self._update_context_actions(state)

    def _update_account_tooltip(self):
        self.account_combo.setToolTip(self.account_combo.currentText())

    def _on_item_finished(self):
        if self._loading or self._displayed_state is None:
            return
        state = self._displayed_state
        item_id = self.item_id_edit.text().strip()
        if item_id and not item_id.isdigit():
            self.item_id_edit.setStyleSheet("border: 1px solid #9a6700;")
            self._status("商品ID只能输入数字", "warning")
            self._update_context_actions(state)
            return
        self.item_id_edit.setStyleSheet("")
        if self._is_draft_state(state):
            if not item_id:
                state.item_id = ""
                self._update_context_actions(state)
                return
            if not self._confirm(
                "绑定正式商品",
                "将当前临时草稿绑定到商品%s吗？\n已添加图片和生成记录会继续保留。" % item_id,
            ):
                self._loading = True
                try:
                    self.item_id_edit.setText(state.item_id)
                finally:
                    self._loading = False
                self._update_context_actions(state)
                return
            self._flush_prompt_save(state)
            try:
                project = image_studio.bind_draft_project(
                    state.project_id,
                    item_id,
                    path=self.db_path,
                )
            except image_studio.ImageStudioProjectConflictError as exc:
                self._message("商品项目已存在", _user_error(exc))
                self._loading = True
                try:
                    self.item_id_edit.setText(state.item_id)
                finally:
                    self._loading = False
                self._update_context_actions(state)
                return
            except Exception as exc:
                self._message("绑定正式商品失败", _user_error(exc))
                self._loading = True
                try:
                    self.item_id_edit.setText(state.item_id)
                finally:
                    self._loading = False
                self._update_context_actions(state)
                return
            state.item_id = project.item_id
            state.project_binding_state = project.binding_state
            self._set_task_title(state)
            self._status("临时草稿已绑定商品%s" % project.item_id, "success")
            self._update_context_actions(state)
            return
        if state.project_id is not None and item_id != state.item_id:
            if not self._confirm(
                "切换商品",
                "切换商品ID后，原图和生成结果会按新商品重新载入。确认继续吗？",
            ):
                self._loading = True
                try:
                    self.item_id_edit.setText(state.item_id)
                finally:
                    self._loading = False
                return
            self._clear_project_binding(state)
        state.item_id = item_id
        if not item_id:
            self._update_context_actions(state)
            return
        if item_id and state.account_alias:
            self._bind_project(state, load_existing=True)
        self._update_context_actions(state)

    def _clear_project_binding(self, state):
        self._flush_prompt_save(state)
        state.project_id = None
        state.project_binding_state = ""
        state.last_saved_prompt = ""
        state.current_job_ids = []
        state.generation_job_ids = []
        state.generation_mode = "batch"
        state.generation_retry_job_id = None
        state.pull_run_token = ""
        state.pull_stop_requested = False
        state.pull_before_asset_ids = set()
        state.pull_before_asset_states = []
        state.pull_asset_ids = set()
        state.pull_download_asset_ids = set()
        state.pull_download_failed = 0
        state.done = state.failed = state.total = 0
        state.started_at = None
        if state is self._displayed_state:
            self._refresh_originals(state)
            self._refresh_results(state)

    def _account_for_alias(self, alias):
        return next((account for account in self.accounts if account.alias == alias), None)

    def _account_context_label(self, state):
        account = self._account_for_alias(getattr(state, "account_alias", ""))
        alias = str(getattr(state, "account_alias", "") or "")
        name = str(getattr(account, "account_name", "") or "").strip()
        if name and name != alias:
            return "%s（%s）" % (name, alias)
        return name or alias or "未选择店铺"

    def _state_project(self, state, *, include_deleted=False):
        if state is None or state.project_id is None:
            return None
        try:
            project = image_studio.get_project(
                state.project_id,
                path=self.db_path,
                include_deleted=include_deleted,
            )
        except Exception as exc:
            self._status("商品套图项目读取失败：%s" % _user_error(exc), "danger")
            return None
        if project is not None:
            state.project_binding_state = project.binding_state
        return project

    def _sync_state_project_binding(self, state):
        return self._state_project(state)

    def _is_draft_state(self, state):
        if state is None:
            return False
        if state.project_binding_state in image_studio.PROJECT_BINDING_STATES:
            return state.project_binding_state == image_studio.PROJECT_BINDING_DRAFT
        project = self._state_project(state)
        return image_studio.is_draft_project(project)

    def _has_account_context(self, state, *, show_message=True):
        if state is None or not state.account_alias:
            if show_message:
                self._message("未选择账号", "请先在顶部选择账号。")
            return False
        if self._account_for_alias(state.account_alias) is None:
            if show_message:
                self._message("账号不可用", "所选账号不存在，请到④账号管理刷新账号。")
            return False
        return True

    def _valid_context(self, state, *, show_message=True):
        if not self._has_account_context(state, show_message=show_message):
            return False
        if not state.item_id or not state.item_id.isdigit():
            if show_message:
                self._message("商品ID无效", "请输入正确的数字商品ID。")
            return False
        return True

    def _ensure_project_for_local_work(self, state):
        if state is None:
            return None
        if state.project_id is not None:
            self._flush_prompt_save(state)
            return self._state_project(state)
        if state.item_id:
            return self._bind_project(state)
        return self._create_draft_project(state)

    def _bind_project(self, state, *, load_existing=False):
        if not self._valid_context(state):
            return None
        account = self._account_for_alias(state.account_alias)
        if account is None:
            self._message("账号不可用", "所选账号不存在，请到④账号管理刷新账号。")
            return None
        previous_id = state.project_id
        try:
            project = image_studio.create_or_get_project(
                account,
                item_id=state.item_id,
                draft_prompt=state.prompt,
                path=self.db_path,
            )
        except Exception as exc:
            self._message("创建套图任务失败", _user_error(exc))
            return None
        state.project_id = int(project.id)
        state.project_binding_state = project.binding_state
        if previous_id != state.project_id:
            self._restore_current_generation_results(state, force=True)
        stored_prompt = str(project.draft_prompt or "")
        if load_existing and previous_id != state.project_id:
            state.prompt = stored_prompt
            state.settings = product_suite.normalize_suite_settings(
                image_studio.project_suite_settings(project)
            )
            if state is self._displayed_state:
                self._load_state(state)
        state.last_saved_prompt = stored_prompt
        if state.prompt != stored_prompt:
            self._flush_prompt_save(state)
        return project

    def _create_draft_project(self, state, *, announce=True):
        if not self._has_account_context(state):
            return None
        account = self._account_for_alias(state.account_alias)
        try:
            project = image_studio.create_draft_project(
                account,
                draft_prompt=state.prompt,
                path=self.db_path,
            )
        except Exception as exc:
            self._message("创建临时草稿失败", _user_error(exc))
            return None
        state.project_id = int(project.id)
        state.project_binding_state = project.binding_state
        state.item_id = ""
        state.last_saved_prompt = str(project.draft_prompt or "")
        self._persist_state(state)
        self._set_task_title(state)
        if state is self._displayed_state:
            self._update_context_actions(state)
        if announce:
            self._status("已创建临时草稿，可继续添加本地图片", "info")
        return project

    def _prompt_save_timer(self, state):
        timer = self._prompt_save_timers.get(state.key)
        if timer is None:
            timer = QTimer(self)
            timer.setSingleShot(True)
            timer.setInterval(PROMPT_AUTOSAVE_DELAY_MS)
            timer.timeout.connect(
                lambda key=state.key: self._on_prompt_autosave_timeout(key)
            )
            self._prompt_save_timers[state.key] = timer
        return timer

    def _schedule_prompt_save(self, state):
        if state is None:
            return
        if state.project_id is None:
            if (
                not str(state.prompt or "").strip()
                or not state.account_alias
                or self._account_for_alias(state.account_alias) is None
            ):
                self._cancel_prompt_save(state)
                return
            self._prompt_save_timer(state).start()
            return
        if state.prompt == state.last_saved_prompt:
            self._cancel_prompt_save(state)
            return
        self._prompt_save_timer(state).start()

    def _cancel_prompt_save(self, state):
        timer = self._prompt_save_timers.get(state.key) if state is not None else None
        if timer is not None:
            timer.stop()

    def _release_prompt_save_timer(self, state):
        timer = (
            self._prompt_save_timers.pop(state.key, None)
            if state is not None
            else None
        )
        if timer is not None:
            timer.stop()
            timer.deleteLater()

    def _on_prompt_autosave_timeout(self, state_key):
        state = self._states.get(state_key)
        if state is not None:
            self._persist_prompt(state)

    def _persist_prompt(self, state):
        if state is None:
            return True
        prompt = str(state.prompt or "")
        if state.project_id is None:
            if not prompt.strip():
                return True
            if (
                not state.account_alias
                or self._account_for_alias(state.account_alias) is None
            ):
                return True
            if self._create_draft_project(state, announce=False) is None:
                return False
        if prompt == state.last_saved_prompt:
            return True
        try:
            project = image_studio.update_project_prompt(
                state.project_id,
                prompt,
                path=self.db_path,
            )
            if project is None:
                raise image_studio.ImageStudioError("商品套图项目不存在")
        except Exception as exc:
            self._status("商品卖点自动保存失败：%s" % _user_error(exc), "danger")
            return False
        state.last_saved_prompt = prompt
        return True

    def _flush_prompt_save(self, state):
        self._cancel_prompt_save(state)
        return self._persist_prompt(state)

    def _persist_state(self, state):
        if state.project_id is None:
            return True
        prompt_saved = self._flush_prompt_save(state)
        try:
            image_studio.update_project_suite_settings(
                state.project_id,
                state.settings,
                path=self.db_path,
            )
        except Exception as exc:
            self._status("商品套图设置保存失败：%s" % _user_error(exc), "danger")
            return False
        return prompt_saved

    def _on_settings_changed(self, value=None):
        if self._loading or self._displayed_state is None:
            return
        state = self._displayed_state
        state.settings = self._settings_from_controls()
        self._persist_last_settings(state.settings)
        self._persist_state(state)
        self._refresh_totals(state)

    def _persist_last_settings(self, settings):
        last_settings = product_suite.last_suite_settings(settings)
        try:
            if os.path.exists(self.config_path):
                saved = appconfig.update_config(
                    {"product_suite": {"last_settings": last_settings}},
                    path=self.config_path,
                )
            else:
                base = dict(self.config)
                suite = base.get("product_suite", {})
                suite = dict(suite) if isinstance(suite, dict) else {}
                suite["last_settings"] = last_settings
                base["product_suite"] = suite
                saved = appconfig.save_config(base, path=self.config_path)
        except Exception as exc:
            self._status("商品套图最近设置保存失败：%s" % _user_error(exc), "danger")
            return
        self.config.clear()
        self.config.update(saved)

    def _persist_last_account_alias(self, alias):
        value = str(alias or "").strip()
        if value == appconfig.product_suite_last_account_alias(self.config):
            return
        try:
            if os.path.exists(self.config_path):
                saved = appconfig.update_config(
                    {"product_suite": {"last_account_alias": value}},
                    path=self.config_path,
                )
            else:
                base = dict(self.config)
                suite = base.get("product_suite", {})
                suite = dict(suite) if isinstance(suite, dict) else {}
                suite["last_account_alias"] = value
                base["product_suite"] = suite
                saved = appconfig.save_config(base, path=self.config_path)
        except Exception as exc:
            self._status("商品套图最近店铺保存失败：%s" % _user_error(exc), "danger")
            return
        self.config.clear()
        self.config.update(saved)

    def _on_prompt_changed(self):
        if self._loading or self._displayed_state is None:
            return
        state = self._displayed_state
        state.prompt = self.prompt_edit.toPlainText()
        self._schedule_prompt_save(state)

    def open_prompt_settings(self, checked=False):
        state = self._displayed_state
        if state is not None:
            self._save_controls_to_state(state)
            settings = state.settings
            base_prompt = state.prompt
            item_id = state.item_id or "未绑定商品"
        else:
            settings = product_suite.default_suite_settings()
            base_prompt = ""
            item_id = "未绑定商品"
        dialog = ProductSuitePromptDialog(
            prompt_path=self.product_suite_prompt_path,
            base_prompt=base_prompt,
            settings=settings,
            item_id=item_id,
            parent=self,
        )
        self.prompt_settings_dialog = dialog
        dialog.exec()

    def _update_context_actions(self, state):
        is_draft = self._is_draft_state(state)
        pull_running = bool(state and state.pull_running())
        self.pull_button.setEnabled(
            state is not None
            and (
                pull_running
                or is_draft
                or self._valid_context(state, show_message=False)
            )
        )
        self.pull_button.setToolTip(
            "正在停止拉取"
            if pull_running and state.pull_stop_requested
            else "停止拉取蝦皮主图"
            if pull_running
            else "需要先绑定正式商品ID"
            if is_draft
            else "拉取蝦皮主图"
        )
        self._refresh_item_id_hint(state)
        self._refresh_add_images_action(state)

    def _refresh_item_id_hint(self, state):
        displayed_item_id = (
            self.item_id_edit.text().strip()
            if state is self._displayed_state
            else str(state.item_id or "").strip()
        )
        item_id_invalid = bool(displayed_item_id and not image_studio.is_formal_item_id(displayed_item_id))
        is_bound = bool(
            state
            and state.project_binding_state == image_studio.PROJECT_BINDING_BOUND
            and image_studio.is_formal_item_id(state.item_id)
            and not item_id_invalid
        )
        self.item_id_hint_label.setVisible(not is_bound)
        if self._is_draft_state(state):
            tooltip = "当前为临时草稿，可添加本地图片和生成套图；绑定正式商品ID后才能拉取蝦皮主图"
        elif item_id_invalid:
            tooltip = "商品ID只能输入数字；修正后可绑定或拉取蝦皮主图"
        else:
            tooltip = "未绑定正式商品ID时，可添加本地图片和生成套图，但不能拉取蝦皮主图"
        self.item_id_hint_label.setToolTip(tooltip)

    def _refresh_add_images_action(self, state):
        asset_count = len(self._original_assets(state, include_missing=True)) if state else 0
        full = asset_count >= image_studio_images.MAX_ORIGINAL_ASSETS
        generation_running = bool(state and state.generation_running())
        importing = bool(state and state.import_worker is not None)
        self.add_images_button.setEnabled(
            state is not None
            and self._has_account_context(state, show_message=False)
            and not full
            and not generation_running
            and not importing
        )
        if not self._has_account_context(state, show_message=False):
            tooltip = "请先选择账号"
        elif full:
            tooltip = "已达到16张商品原图上限"
        elif generation_running:
            tooltip = "生成中不能添加商品原图"
        elif importing:
            tooltip = "正在添加商品原图"
        else:
            tooltip = "添加本地商品原图"
        self.add_images_button.setToolTip(tooltip)

    def _start_thread(self, worker, name):
        thread = run_worker(worker, thread_name=name, start=False)
        token = id(thread)
        _PRODUCT_SUITE_THREAD_REFS[token] = (thread, worker)
        thread.finished.connect(lambda token=token: _PRODUCT_SUITE_THREAD_REFS.pop(token, None))
        run_token = str(getattr(worker, "run_token", "") or "")
        if run_token:
            thread.setProperty("productSuiteRunToken", run_token)
            thread.finished.connect(self._on_generation_thread_finished_signal)
        pull_run_token = str(getattr(worker, "pull_run_token", "") or "")
        if pull_run_token:
            thread.setProperty("productSuitePullRunToken", pull_run_token)
            thread.finished.connect(self._on_pull_thread_finished_signal)
        thread.start()
        return thread

    def _refresh_originals(self, state, *, preserve_checks=True):
        context = (state.key, state.project_id) if state is not None else None
        checked_ids = (
            set(self.original_list.checked_asset_ids())
            if preserve_checks and context == self._original_list_context
            else set()
        )
        previous = self.original_list.blockSignals(True)
        self.original_list.clear()
        assets = self._original_assets(state, include_missing=False)
        try:
            for index, asset in enumerate(assets, 1):
                label = "主图" if index == 1 else "参考%d" % (index - 1)
                item = QListWidgetItem(label)
                item.setData(Qt.UserRole, int(asset.id))
                item.setData(
                    ORIGINAL_CHECK_STATE_ROLE,
                    Qt.Checked if int(asset.id) in checked_ids else Qt.Unchecked,
                )
                if _asset_usable(asset):
                    item.setIcon(QIcon(_image_pixmap(asset.local_path, QSize(82, 64))))
                    item.setToolTip("%s，勾选可批量删除；双击预览；拖动可调整顺序" % label)
                else:
                    item.setIcon(QIcon(_placeholder_pixmap("待下载", QSize(82, 64))))
                    item.setToolTip("%s尚未下载；勾选可批量删除，单击缩略图后台拉取" % label)
                self.original_list.addItem(item)
        finally:
            self.original_list.blockSignals(previous)
        self._original_list_context = context
        self.original_list.update_content_height()
        self.original_list.viewport().update()
        self.original_count_label.setText("%d/16" % len(assets))
        self._refresh_original_selection_controls()
        self._refresh_add_images_action(state)
        self._refresh_totals(state)

    def _on_original_checks_changed(self, asset_ids):
        self._refresh_original_selection_controls()

    def _refresh_original_selection_controls(self):
        checked_count = len(self.original_list.checked_asset_ids())
        asset_count = len(self.original_list.asset_ids())
        self.original_selected_label.setText("已选 %d 张" % checked_count)
        state = self._displayed_state
        enabled = bool(asset_count) and state is not None and not state.generation_running()
        self.select_all_originals_button.setEnabled(enabled)
        self.invert_originals_button.setEnabled(enabled)

    def _original_assets(self, state, *, include_missing=False):
        if state is None or state.project_id is None:
            return []
        try:
            return image_studio.list_assets(
                state.project_id,
                kind=image_studio.ASSET_KIND_ORIGINAL,
                include_missing=include_missing,
                path=self.db_path,
            )
        except Exception as exc:
            self._status("商品原图读取失败：%s" % _user_error(exc), "danger")
            return []

    def choose_images(self, checked=False):
        paths, _ = QFileDialog.getOpenFileNames(
            self,
            "选择商品原图",
            "",
            "图片文件 (*.png *.jpg *.jpeg *.webp *.bmp)",
        )
        if paths:
            self.import_files(paths)

    def import_files(self, paths):
        self._start_import(file_paths=list(paths or []))

    def import_clipboard_image(self, image_bytes):
        self._start_import(image_bytes=image_bytes)

    def _start_import(self, *, file_paths=None, image_bytes=None):
        state = self._displayed_state
        if state is None:
            return
        self._save_controls_to_state(state)
        state.import_created_draft = False
        created_project = state.project_id is None
        project = self._ensure_project_for_local_work(state)
        if project is None:
            return
        state.import_created_draft = created_project and image_studio.is_draft_project(project)
        if state.import_worker is not None:
            self._status("当前任务正在添加图片，请稍候", "warning")
            return
        current_count = len(self._original_assets(state, include_missing=True))
        if current_count >= image_studio_images.MAX_ORIGINAL_ASSETS:
            self._message("图片数量已满", "每个商品最多添加16张原图。")
            return
        worker = ProductSuiteImportImagesWorker(
            state.project_id,
            file_paths=file_paths,
            image_bytes=image_bytes,
            db_path=self.db_path,
            config=self.config,
        )
        state.import_worker = worker
        if state is self._displayed_state:
            self._refresh_add_images_action(state)
        worker.finished.connect(lambda result, state=state: self._on_import_finished(state, result))
        worker.cancelled.connect(lambda result, state=state: self._on_import_finished(state, result))
        worker.failed.connect(lambda row, error, state=state: self._on_import_failed(state, error))
        state.import_thread = self._start_thread(worker, "商品套图添加原图")
        self._status("正在后台添加商品原图", "info")

    def _discard_empty_import_draft(self, state):
        if not state.import_created_draft:
            return
        state.import_created_draft = False
        project_id = state.project_id
        if project_id is None:
            return
        try:
            project = image_studio.discard_empty_draft_project(project_id, path=self.db_path)
        except Exception as exc:
            self._status("清理空临时草稿失败：%s" % _user_error(exc), "danger")
            return
        if project is not None and project.deleted_at is not None:
            state.project_id = None
            state.project_binding_state = ""
            state.item_id = ""
            self._set_task_title(state)
            self._status("未添加有效图片，已丢弃空临时草稿", "warning")

    def _on_import_failed(self, state, error):
        state.import_worker = None
        state.import_thread = None
        self._discard_empty_import_draft(state)
        self._status("添加商品原图失败：%s" % _user_error(error), "danger")
        if state is self._displayed_state:
            self._refresh_add_images_action(state)

    def _on_import_finished(self, state, result):
        state.import_worker = None
        state.import_thread = None
        self._discard_empty_import_draft(state)
        if result.get("ok") is False:
            self._message("添加商品原图失败", _user_error(result.get("error")))
        else:
            errors = result.get("errors") or []
            count = len(result.get("assets") or [])
            if errors:
                self._message(
                    "部分图片未添加",
                    "已添加%d张，%d张失败。\n%s" % (
                        count,
                        len(errors),
                        _user_error(errors[0].get("error")),
                    ),
                )
            else:
                self._status("已添加%d张商品原图" % count, "success")
        if state is self._displayed_state:
            self._refresh_originals(state)

    def delete_original(self, asset_id):
        self.delete_originals([asset_id])

    def delete_originals(self, asset_ids):
        state = self._displayed_state
        if state is None or state.project_id is None:
            self._status("当前商品没有可删除的原图", "warning")
            return
        if state.generation_running():
            self._status("生成中不能删除当前任务的商品原图", "warning")
            return
        if state.pull_running():
            self._status("拉取蝦皮主图时不能删除当前任务的商品原图", "warning")
            return
        normalized_ids = []
        seen = set()
        for value in asset_ids or []:
            asset_id = int(value)
            if asset_id not in seen:
                seen.add(asset_id)
                normalized_ids.append(asset_id)
        if not normalized_ids:
            self._status("请先勾选要删除的商品原图", "warning")
            return
        downloading = set(state.download_queue) | set(state.downloads)
        if downloading.intersection(normalized_ids):
            self._message("暂不能删除商品原图", "选中的图片仍在后台下载，请等待下载结束后再删除。")
            return
        visible_ids = [int(asset.id) for asset in self._original_assets(state, include_missing=False)]
        message = (
            "确认从当前商品原图列表移除选中的%d张图片吗？\n\n"
            "此操作不会删除蝦皮线上图片，也不会删除本地源文件。"
            "以后重新拉取蝦皮主图时，线上仍存在的图片可能重新出现。"
            % len(normalized_ids)
        )
        if visible_ids and visible_ids[0] in normalized_ids:
            message += "\n\n选中内容包含当前主图，删除后下一张图片将成为主图。"
        if not self._confirm("删除商品原图", message, destructive=True):
            return
        try:
            image_studio.remove_original_assets_if_unused(
                state.project_id,
                normalized_ids,
                path=self.db_path,
            )
        except Exception as exc:
            self._message("不能删除商品原图", _user_error(exc))
            return
        self._refresh_originals(state, preserve_checks=False)
        self._status("已移除%d张商品原图" % len(normalized_ids), "success")

    def reorder_originals(self, visible_ids):
        state = self._displayed_state
        if state is None or state.project_id is None:
            return
        all_assets = self._original_assets(state, include_missing=True)
        hidden_ids = [int(asset.id) for asset in all_assets if int(asset.id) not in set(visible_ids)]
        try:
            image_studio.reorder_original_assets(
                state.project_id,
                list(visible_ids) + hidden_ids,
                path=self.db_path,
            )
        except Exception as exc:
            self._message("原图排序失败", _user_error(exc))
        self._refresh_originals(state)

    def _asset_for_item(self, item):
        state = self._displayed_state
        if state is None or item is None:
            return None
        value = item.data(Qt.UserRole)
        if value is None:
            return None
        asset_id = int(value)
        return next(
            (asset for asset in self._original_assets(state, include_missing=True) if int(asset.id) == asset_id),
            None,
        )

    def _on_original_clicked(self, item):
        asset = self._asset_for_item(item)
        if asset is not None and not _asset_usable(asset) and asset.remote_url:
            self._queue_original_downloads(self._displayed_state, [asset])

    def _preview_original(self, item):
        asset = self._asset_for_item(item)
        if asset is None:
            return
        if not _asset_usable(asset):
            self._queue_original_downloads(self._displayed_state, [asset])
            self._status("原图正在后台下载，完成后可双击预览", "info")
            return
        ProductSuitePreviewDialog(asset.local_path, "商品原图预览", self).exec()

    def pull_main_images(self, checked=False):
        state = self._displayed_state
        if state is None:
            return
        if state.pull_running():
            self._request_stop_pull(state)
            return
        self._save_controls_to_state(state)
        if self._is_draft_state(state):
            self._message(
                "无法拉取蝦皮主图",
                "当前为临时项目，无法拉取蝦皮主图。\n请先输入正式商品ID后再试。",
            )
            return
        if not self._valid_context(state):
            return
        existing = [asset for asset in self._original_assets(state, include_missing=False) if _asset_usable(asset)]
        message = (
            "店铺：%s\n"
            "商品ID：%s\n"
            "当前可用商品原图：%d张\n\n"
            "将读取蝦皮主图并在后台下载，不会修改蝦皮线上商品。"
            % (
                self._account_context_label(state),
                state.item_id,
                len(existing),
            )
        )
        if existing:
            message += "\n继续拉取会刷新蝦皮原图列表，本地手动添加图片会保留。"
        if not self._confirm(
            "确认拉取蝦皮主图",
            message,
            confirm_text="确认拉取",
            cancel_text="取消",
        ):
            return
        if state.project_id is None:
            project = image_studio.get_project_by_account_item(
                state.account_alias,
                state.item_id,
                path=self.db_path,
            )
            if project is not None:
                state.project_id = int(project.id)
                state.project_binding_state = project.binding_state
        before_assets = (
            image_studio.list_assets(
                state.project_id,
                kind=image_studio.ASSET_KIND_ORIGINAL,
                path=self.db_path,
            )
            if state.project_id is not None
            else []
        )
        pull_run_token = uuid.uuid4().hex
        worker = ImageStudioPullImagesWorker(
            state.account_alias,
            state.item_id,
            pull_run_token=pull_run_token,
            db_path=self.db_path,
            config=self.config,
        )
        state.pull_worker = worker
        state.pull_run_token = pull_run_token
        state.pull_stop_requested = False
        state.pull_cleanup_mode = "keep"
        state.pull_before_asset_ids = {int(asset.id) for asset in before_assets}
        state.pull_before_asset_states = [
            {
                "id": int(asset.id),
                "status": asset.status,
                "source_order": int(asset.source_order or 0),
            }
            for asset in before_assets
        ]
        state.pull_asset_ids = set()
        state.pull_download_asset_ids = set()
        state.pull_download_failed = 0
        state.pull_started_at = time.monotonic()
        self._pull_run_states[pull_run_token] = state.key
        self._log_pull_lifecycle(
            state,
            pull_run_token,
            "started",
            {
                "before_count": len(state.pull_before_asset_ids),
            },
        )
        worker.finished.connect(
            lambda result, token=pull_run_token: self._on_pull_finished(
                token,
                result,
            )
        )
        worker.cancelled.connect(
            lambda result, token=pull_run_token: self._on_pull_finished(
                token,
                result,
            )
        )
        worker.failed.connect(
            lambda row, error, token=pull_run_token: self._on_pull_failed(
                token,
                error,
            )
        )
        state.pull_thread = self._start_thread(worker, "商品套图拉取蝦皮主图")
        if state is self._displayed_state:
            self._apply_running_state(state)
        self._status("开始拉取蝦皮主图，可继续操作其他套图任务", "info")

    def _pull_state(self, pull_run_token):
        token = str(pull_run_token or "")
        state = self._states.get(self._pull_run_states.get(token))
        if state is None or state.pull_run_token != token:
            return None
        return state

    def _pull_stop_action(self):
        box = QMessageBox(self)
        box.setIcon(QMessageBox.Question)
        box.setWindowTitle("停止拉取蝦皮主图")
        box.setText("请选择停止后如何处理本轮已经拉取的图片。")
        keep_button = box.addButton("停止并保留", QMessageBox.AcceptRole)
        clear_button = box.addButton(
            "停止并清除本次新增",
            QMessageBox.DestructiveRole,
        )
        continue_button = box.addButton("继续拉取", QMessageBox.RejectRole)
        box.setDefaultButton(keep_button)
        box.exec()
        clicked = box.clickedButton()
        if clicked is keep_button:
            return "keep"
        if clicked is clear_button:
            return "clear_current"
        if clicked is continue_button:
            return "continue"
        return "continue"

    def _request_stop_pull(self, state):
        if state.pull_stop_requested:
            self._status("正在停止当前拉取任务", "warning")
            return
        action = self._pull_stop_action()
        if action == "continue":
            return
        state.pull_stop_requested = True
        state.pull_cleanup_mode = action
        if state.pull_worker is not None:
            state.pull_worker.cancel()
        self._cancel_pull_downloads(state)
        self._log_pull_lifecycle(
            state,
            state.pull_run_token,
            "stop_requested",
            {"cleanup_mode": action},
            level="WARNING",
        )
        if state is self._displayed_state:
            self._apply_running_state(state)
        self._status("已请求停止拉取蝦皮主图", "warning")
        self._maybe_finalize_pull(state, state.pull_run_token)

    def _cancel_pull_downloads(self, state):
        pull_ids = set(state.pull_download_asset_ids)
        if not pull_ids:
            return
        state.download_queue = [
            asset_id
            for asset_id in state.download_queue
            if int(asset_id) not in pull_ids
        ]
        for asset_id in list(pull_ids):
            running = state.downloads.get(int(asset_id))
            if running is None:
                state.pull_download_asset_ids.discard(int(asset_id))
                state.download_tokens.pop(int(asset_id), None)
                continue
            worker, _ = running
            worker.cancel()

    def _on_pull_failed(self, pull_run_token, error):
        state = self._pull_state(pull_run_token)
        if state is None or state.pull_stop_requested:
            return
        self._status("拉取蝦皮主图失败：%s" % _user_error(error), "danger")

    def _on_pull_finished(self, pull_run_token, result):
        state = self._pull_state(pull_run_token)
        if state is None:
            return
        state.pull_worker = None
        state.pull_thread = None
        result = dict(result or {})
        if result.get("ok") is False and not state.pull_stop_requested:
            self._finalize_pull(
                state,
                pull_run_token,
                error=_user_error(result.get("error")),
            )
            return
        project = result.get("project")
        if project is not None:
            state.project_id = int(project.id)
            state.project_binding_state = project.binding_state
        assets = [
            asset
            for asset in (result.get("assets") or [])
            if asset.status != image_studio.ASSET_STATUS_MISSING
        ][: image_studio_images.MAX_ORIGINAL_ASSETS]
        state.pull_asset_ids.update(
            int(asset.id)
            for asset in assets
            if getattr(asset, "remote_url", None)
        )
        if result.get("cancelled") or state.pull_stop_requested:
            self._cancel_pull_downloads(state)
        else:
            self._queue_original_downloads(
                state,
                assets,
                pull_run_token=pull_run_token,
            )
            self._status("已读取%d张蝦皮主图，正在后台下载" % len(assets), "success")
        if state is self._displayed_state:
            self._refresh_originals(state)
            self._apply_running_state(state)
        self._maybe_finalize_pull(state, pull_run_token)

    @Slot()
    def _on_pull_thread_finished_signal(self):
        sender = self.sender()
        token = str(
            sender.property("productSuitePullRunToken")
            if sender is not None
            else ""
        )
        QTimer.singleShot(0, lambda token=token: self._handle_pull_thread_finished(token))

    def _handle_pull_thread_finished(self, pull_run_token):
        state = self._pull_state(pull_run_token)
        if state is None or state.pull_worker is None:
            return
        state.pull_worker = None
        state.pull_thread = None
        if state.pull_stop_requested:
            self._maybe_finalize_pull(state, pull_run_token)
        else:
            self._finalize_pull(
                state,
                pull_run_token,
                error="拉取线程已结束，请稍后重试",
            )

    def _maybe_finalize_pull(self, state, pull_run_token):
        if self._pull_state(pull_run_token) is not state:
            return False
        if state.pull_worker is not None or state.pull_download_asset_ids:
            return False
        return self._finalize_pull(state, pull_run_token)

    def _clear_current_pull_assets(self, state):
        new_ids = sorted(
            set(state.pull_asset_ids) - set(state.pull_before_asset_ids)
        )
        removable = []
        retained = 0
        for asset_id in new_ids:
            asset = image_studio.get_asset(asset_id, path=self.db_path)
            if (
                asset is None
                or int(asset.project_id) != int(state.project_id or 0)
                or asset.kind != image_studio.ASSET_KIND_ORIGINAL
                or not asset.remote_url
            ):
                continue
            if image_studio.asset_reference_counts(
                asset.id,
                path=self.db_path,
            )["total"]:
                retained += 1
            else:
                removable.append(asset.id)
        removed = 0
        if removable:
            image_studio.remove_original_assets_if_unused(
                state.project_id,
                removable,
                path=self.db_path,
            )
            removed = len(removable)
        existing_ids = {
            int(asset.id)
            for asset in image_studio.list_assets(
                state.project_id,
                kind=image_studio.ASSET_KIND_ORIGINAL,
                path=self.db_path,
            )
        }
        snapshot = [
            item
            for item in state.pull_before_asset_states
            if int(item["id"]) in existing_ids
        ]
        if snapshot:
            image_studio.restore_original_asset_snapshot(
                state.project_id,
                snapshot,
                path=self.db_path,
            )
        return removed, retained

    def _finalize_pull(self, state, pull_run_token, *, error=""):
        if self._pull_state(pull_run_token) is not state:
            return False
        cancelled = state.pull_stop_requested
        cleanup_mode = state.pull_cleanup_mode
        pulled_count = len(state.pull_asset_ids)
        new_count = len(set(state.pull_asset_ids) - set(state.pull_before_asset_ids))
        removed = 0
        retained = 0
        cleanup_error = ""
        if cancelled and cleanup_mode == "clear_current" and state.project_id is not None:
            try:
                removed, retained = self._clear_current_pull_assets(state)
            except Exception as exc:
                cleanup_error = _user_error(exc)
        elapsed = int(
            max(0, time.monotonic() - state.pull_started_at)
            if state.pull_started_at
            else 0
        )
        self._pull_run_states.pop(pull_run_token, None)
        state.pull_worker = None
        state.pull_thread = None
        state.pull_run_token = ""
        state.pull_stop_requested = False
        state.pull_cleanup_mode = "keep"
        state.pull_before_asset_ids = set()
        state.pull_before_asset_states = []
        state.pull_asset_ids = set()
        state.pull_download_asset_ids = set()
        failed = int(state.pull_download_failed or 0)
        self._log_pull_lifecycle(
            state,
            pull_run_token,
            "finalized",
            {
                "cancelled": cancelled,
                "cleanup_mode": cleanup_mode,
                "pulled_count": pulled_count,
                "new_count": new_count,
                "removed_count": removed,
                "retained_count": retained,
                "failed_count": failed,
                "elapsed_seconds": elapsed,
                "has_error": bool(error or cleanup_error),
            },
            level="WARNING" if cancelled or error or cleanup_error else "INFO",
        )
        state.pull_download_failed = 0
        state.pull_started_at = None
        if state is self._displayed_state:
            self._refresh_originals(state)
            self._apply_running_state(state)
        if cleanup_error:
            self._message(
                "停止拉取后清理失败",
                "拉取已停止，但本轮图片清理失败：%s" % cleanup_error,
            )
            self._status("拉取已停止，本轮图片清理失败", "danger")
            return True
        if error:
            if state is self._displayed_state:
                self._message("拉取蝦皮主图失败", error)
            self._status("拉取蝦皮主图失败：%s" % error, "danger")
            return True
        if cancelled:
            kept = max(0, new_count - removed)
            if state is self._displayed_state:
                self._message(
                    "拉取蝦皮主图已停止",
                    "本轮新增%d张：保留%d张，清理%d张，"
                    "因引用保留%d张，下载失败%d张；总用时%d秒。"
                    % (
                        new_count,
                        kept,
                        removed,
                        retained,
                        failed,
                        elapsed,
                    ),
                    icon=QMessageBox.Information,
                )
            self._status(
                "拉取已停止：保留%d张，清理%d张" % (kept, removed),
                "warning",
            )
            return True
        self._status(
            "蝦皮主图拉取完成：本轮%d张，下载失败%d张，用时%d秒"
            % (pulled_count, failed, elapsed),
            "success" if not failed else "warning",
        )
        return True

    def _log_pull_lifecycle(
        self,
        state,
        pull_run_token,
        event,
        payload=None,
        *,
        level="INFO",
    ):
        data = {
            "pull_run_token": str(pull_run_token or "")[:8],
            "project_id": getattr(state, "project_id", None),
            "event": str(event or ""),
        }
        data.update(dict(payload or {}))
        try:
            diagnostics.write_diagnostic_log(
                "商品套图拉取生命周期",
                level=level,
                step="product_suite_pull",
                task_id=getattr(state, "project_id", None),
                item_id=getattr(state, "item_id", None),
                payload=data,
                log_dir=appconfig.diagnostic_log_dir(self.config),
            )
        except Exception:
            pass

    def _queue_original_downloads(self, state, assets, *, pull_run_token=None):
        if state is None:
            return
        queued = set(state.download_queue) | set(state.downloads)
        for asset in assets or []:
            if _asset_usable(asset) or not getattr(asset, "remote_url", None):
                continue
            asset_id = int(asset.id)
            if asset_id not in queued:
                state.download_queue.append(asset_id)
                state.download_tokens[asset_id] = str(pull_run_token or "")
                if pull_run_token:
                    state.pull_download_asset_ids.add(asset_id)
                queued.add(asset_id)
        self._start_queued_downloads(state)

    def _start_queued_downloads(self, state):
        while state.download_queue and len(state.downloads) < ORIGINAL_DOWNLOAD_CONCURRENCY:
            asset_id = int(state.download_queue.pop(0))
            worker = ImageStudioDownloadOriginalWorker(
                asset_id,
                db_path=self.db_path,
                config=self.config,
                max_retries=2,
            )
            download_token = str(state.download_tokens.get(asset_id, "") or "")
            worker.finished.connect(
                lambda result, state=state, asset_id=asset_id, token=download_token: self._on_download_finished(
                    state, asset_id, result, pull_run_token=token
                )
            )
            worker.cancelled.connect(
                lambda result, state=state, asset_id=asset_id, token=download_token: self._on_download_finished(
                    state, asset_id, result, pull_run_token=token
                )
            )
            worker.failed.connect(
                lambda row, error, state=state, asset_id=asset_id: self._status(
                    "商品原图 #%d 下载失败：%s" % (asset_id, _user_error(error)),
                    "danger",
                )
            )
            thread = self._start_thread(worker, "商品套图下载原图")
            state.downloads[asset_id] = (worker, thread)

    def _on_download_finished(
        self,
        state,
        asset_id,
        result,
        *,
        pull_run_token="",
    ):
        expected_token = str(state.download_tokens.get(int(asset_id), "") or "")
        if expected_token != str(pull_run_token or ""):
            return
        state.downloads.pop(int(asset_id), None)
        state.download_tokens.pop(int(asset_id), None)
        if pull_run_token:
            state.pull_download_asset_ids.discard(int(asset_id))
        if result.get("ok") is False:
            if pull_run_token:
                state.pull_download_failed += 1
            self._status(
                "商品原图 #%d 下载失败：%s" % (asset_id, _user_error(result.get("error"))),
                "danger",
            )
        elif not result.get("cancelled"):
            self._status("商品原图 #%d 已下载" % asset_id, "success")
        if state is self._displayed_state:
            self._refresh_originals(state)
        self._start_queued_downloads(state)
        if pull_run_token:
            self._maybe_finalize_pull(state, pull_run_token)

    def _rebuild_categories(self, state):
        while self.category_grid.count():
            item = self.category_grid.takeAt(0)
            widget = item.widget()
            if widget is not None:
                widget.deleteLater()
        settings = product_suite.normalize_suite_settings(state.settings)
        state.settings = settings
        categories = settings["categories"]
        ordered = product_suite.category_order(settings)
        self.category_rows = {}
        for index, name in enumerate(ordered):
            custom = name not in product_suite.FIXED_CATEGORIES
            row = SuiteCategoryRow(
                name,
                categories.get(name, 0),
                helper=product_suite.category_helper(name),
                custom=custom,
            )
            row.countChangeRequested.connect(self.change_category_count)
            if custom:
                row.renameRequested.connect(self.rename_custom_category)
                row.deleteRequested.connect(self.delete_custom_category)
            row.set_controls_enabled(not state.generation_running())
            self.category_rows[name] = row
            self.category_grid.addWidget(row, index, 0)
        self._refresh_totals(state)

    def change_category_count(self, name, delta):
        state = self._displayed_state
        if state is None:
            return
        settings = product_suite.normalize_suite_settings(state.settings)
        categories = dict(settings["categories"])
        categories[name] = max(0, int(categories.get(name, 0)) + int(delta))
        settings["categories"] = categories
        state.settings = settings
        self._persist_state(state)
        row = self.category_rows.get(name) if state is self._displayed_state else None
        if row is None:
            self._rebuild_categories(state)
        else:
            row.set_count(categories[name])
            self._refresh_totals(state)

    def add_custom_category(self, checked=False):
        if self._displayed_state is None:
            return
        self.add_category_button.hide()
        self.custom_category_edit.clear()
        self.custom_category_edit.show()
        self.custom_category_edit.setFocus(Qt.OtherFocusReason)

    def _commit_custom_category(self):
        state = self._displayed_state
        if state is None:
            return
        name = self.custom_category_edit.text()
        settings = product_suite.normalize_suite_settings(state.settings)
        error = product_suite.suite_name_error(name, settings["categories"])
        if error:
            self._message("分类名称无效", error)
            self.custom_category_edit.setFocus(Qt.OtherFocusReason)
            return
        categories = dict(settings["categories"])
        categories[name] = 1
        settings["categories"] = categories
        settings["custom_category_order"] = list(settings["custom_category_order"]) + [name]
        state.settings = product_suite.normalize_suite_settings(settings)
        self._persist_state(state)
        self.custom_category_edit.hide()
        self.add_category_button.show()
        self._rebuild_categories(state)

    def _finish_custom_category_edit(self):
        if not self.custom_category_edit.isHidden() and not self.custom_category_edit.text().strip():
            self.custom_category_edit.hide()
            self.add_category_button.show()

    def rename_custom_category(self, old_name):
        state = self._displayed_state
        if state is None or old_name in product_suite.FIXED_CATEGORIES:
            return
        name, ok = QInputDialog.getText(
            self,
            "重命名自定义分类",
            "分类名称",
            text=old_name,
        )
        if not ok or name == old_name:
            return
        settings = product_suite.normalize_suite_settings(state.settings)
        error = product_suite.suite_name_error(name, settings["categories"], old_name=old_name)
        if error:
            self._message("分类名称无效", error)
            return
        categories = dict(settings["categories"])
        count = categories.pop(old_name, 1)
        categories[name] = count
        settings["categories"] = categories
        settings["custom_category_order"] = [
            name if value == old_name else value
            for value in settings["custom_category_order"]
        ]
        state.settings = product_suite.normalize_suite_settings(settings)
        self._persist_state(state)
        self._rebuild_categories(state)

    def delete_custom_category(self, name):
        state = self._displayed_state
        if state is None or name in product_suite.FIXED_CATEGORIES:
            return
        settings = product_suite.normalize_suite_settings(state.settings)
        categories = dict(settings["categories"])
        categories.pop(name, None)
        settings["categories"] = categories
        settings["custom_category_order"] = [
            value for value in settings["custom_category_order"] if value != name
        ]
        state.settings = product_suite.normalize_suite_settings(settings)
        self._persist_state(state)
        self._rebuild_categories(state)

    def _refresh_totals(self, state):
        image_count = sum(1 for asset in self._original_assets(state) if _asset_usable(asset))
        total = product_suite.suite_total_count(state.settings, image_count)
        self.category_total_label.setText("合计 %d 张" % total)
        if not state.generation_running():
            self.generate_button.setText("生成套图（%d）" % total)

    def start_ai_write(self, checked=False):
        state = self._displayed_state
        if state is None:
            return
        if state.ai_worker is not None:
            self._status("当前套图任务正在AI帮写", "info")
            return
        local_assets = [asset for asset in self._original_assets(state) if _asset_usable(asset)]
        if not local_assets:
            self._message("缺少可用商品原图", "请先添加商品原图，或等待已拉取的商品原图下载完成。")
            return
        selected_assets = local_assets[: ai.CMHUB_VISION_MAX_IMAGES]
        self._save_controls_to_state(state)
        context = (
            "商品ID：%s；平台：%s；国家地区：%s；输出语言：%s。当前已有要求：%s"
            % (
                state.item_id or "未绑定商品",
                state.settings["platform"],
                state.settings["country"],
                state.settings["language"],
                state.prompt or "无",
            )
        )
        instruction = (
            "请为当前商品原图生成简洁、可执行的商品卖点与画面要求。"
            "内容应包含核心卖点、目标人群、使用场景和禁用元素，不要虚构商品参数。"
        )
        state.ai_prompt_snapshot = state.prompt
        state.ai_started_at = time.monotonic()
        worker = ProductSuiteAiWriteWorker(
            instruction,
            context,
            image_paths=[asset.local_path for asset in selected_assets],
            config=self.config,
            cmhub_config_path=self.cmhub_config_path,
        )
        state.ai_worker = worker
        worker.finished.connect(lambda result, state=state: self._on_ai_write_finished(state, result))
        worker.cancelled.connect(lambda result, state=state: self._on_ai_write_finished(state, result))
        worker.failed.connect(lambda row, error, state=state: self._on_ai_write_failed(state, error))
        state.ai_thread = self._start_thread(worker, "商品套图AI帮写")
        if state is self._displayed_state:
            self._apply_running_state(state)
        message = "AI帮写已开始，可切换到其他套图任务"
        if len(local_assets) > ai.CMHUB_VISION_MAX_IMAGES:
            message += "；已使用前%d张商品原图进行理解" % ai.CMHUB_VISION_MAX_IMAGES
        self._status(message, "info")

    def cancel_ai_write(self, checked=False):
        state = self._displayed_state
        if state is not None and state.ai_worker is not None:
            state.ai_worker.cancel()
            self._status("已请求取消AI帮写", "warning")

    def _on_ai_write_failed(self, state, error):
        self._status("AI帮写失败：%s" % _user_error(error), "danger")

    def _on_ai_write_finished(self, state, result):
        state.ai_worker = None
        state.ai_thread = None
        state.ai_started_at = None
        if result.get("ok") is False:
            self._message("AI帮写失败", _user_error(result.get("error")))
        elif not result.get("cancelled"):
            text = str(result.get("text") or "").strip()
            if text:
                if state.prompt != state.ai_prompt_snapshot:
                    state.pending_ai_text = text
                    if state is self._displayed_state:
                        self._offer_pending_ai_result(state)
                    else:
                        self._status(
                            self._ai_write_success_message(result)
                            + "，切回对应套图任务后确认是否采用",
                            "success",
                        )
                else:
                    state.prompt = text
                    self._persist_state(state)
                    if state is self._displayed_state:
                        self._loading = True
                        try:
                            self.prompt_edit.setPlainText(text)
                        finally:
                            self._loading = False
                    self._status(self._ai_write_success_message(result), "success")
        if state is self._displayed_state:
            self._apply_running_state(state)

    def _ai_write_success_message(self, result):
        image_count = max(0, int(dict(result or {}).get("image_count", 0) or 0))
        parts = ["AI帮写完成"]
        if image_count:
            parts.append("已理解%d张商品原图" % image_count)
        metadata = dict(dict(result or {}).get("metadata") or {})
        if metadata.get("points_cost") is not None:
            parts.append("图片理解扣点%s" % metadata["points_cost"])
        if metadata.get("points_balance") is not None:
            parts.append("当前余额%s" % metadata["points_balance"])
        return "：".join(parts[:2]) + ("，" + "，".join(parts[2:]) if len(parts) > 2 else "")

    def _offer_pending_ai_result(self, state):
        if not state.pending_ai_text:
            return
        if self._confirm(
            "采用AI帮写结果",
            "AI帮写期间卖点内容已被修改。是否用AI帮写结果覆盖当前内容？",
        ):
            state.prompt = state.pending_ai_text
            self._loading = True
            try:
                self.prompt_edit.setPlainText(state.prompt)
            finally:
                self._loading = False
            self._persist_state(state)
        state.pending_ai_text = ""

    def toggle_generation(self, checked=False):
        state = self._displayed_state
        if state is None:
            return
        if state.generation_running():
            retrying = state.generation_mode == "retry"
            if state.generation_stop_requested:
                self._status(
                    "正在停止当前图片重试"
                    if retrying
                    else "正在停止当前套图任务",
                    "warning",
                )
                return
            if self._confirm(
                "停止图片重试" if retrying else "停止生成套图",
                (
                    "确认停止当前图片重试吗？已提交任务会在安全边界停止。"
                    if retrying
                    else "确认取消当前任务吗？已提交任务会在安全边界停止。"
                ),
                destructive=True,
            ):
                state.generation_stop_requested = True
                state.worker.cancel()
                self._log_generation_lifecycle(
                    state,
                    state.generation_run_token,
                    "stop_requested",
                )
                self._apply_running_state(state)
                self._status(
                    "已请求停止当前图片重试"
                    if retrying
                    else "已请求停止当前套图任务",
                    "warning",
                )
            return
        self.start_generation(state)

    def start_generation(self, state, specs=None, *, retry_job_id=None):
        if state.generation_running():
            self._status("当前套图任务仍在生成", "warning")
            return False
        retry_job_id = int(retry_job_id) if retry_job_id is not None else None
        retrying = retry_job_id is not None
        confirm_batch = specs is None and not retrying
        if state is self._displayed_state:
            self._save_controls_to_state(state)
        template_text = None
        if specs is None:
            try:
                template_text = prompts.load_product_suite_prompt(
                    self.product_suite_prompt_path
                )
            except prompts.PromptError:
                self._message(
                    "套图提示词模板无效",
                    "套图提示词模板无效，请在提示词设置中修复或恢复默认。",
                )
                return False
        if self._ensure_project_for_local_work(state) is None:
            return False
        local_assets = [asset for asset in self._original_assets(state) if _asset_usable(asset)]
        if not local_assets:
            self._message("缺少商品原图", "请先添加图片，或等待蝦皮主图下载完成。")
            return False
        if specs is None and not state.prompt.strip():
            self._message("商品卖点不能为空", "请填写商品卖点与要求，或使用AI帮写。")
            return False
        specs = list(specs or product_suite.build_job_specs(
            local_assets,
            state.prompt,
            state.settings,
            state.item_id or "未绑定商品",
            template_text=template_text,
        ))
        if not specs:
            self._message("生成数量为0", "请至少把一个套图分类的数量设为1。")
            return False
        generation_round_key = ""
        if retrying:
            try:
                original_job = image_studio.get_job(retry_job_id, path=self.db_path)
            except Exception as exc:
                self._message("读取重试图片失败", _user_error(exc))
                return False
            if original_job is None or int(original_job.project_id) != int(state.project_id):
                self._message("重试图片无效", "该图片不属于当前商品套图任务。")
                return False
            for spec in specs:
                spec["generation_round_key"] = original_job.generation_round_key
                spec["generation_slot_index"] = original_job.generation_slot_index
            generation_round_key = str(original_job.generation_round_key or "")
        else:
            if confirm_batch:
                try:
                    history_summary = image_studio.get_successful_generation_history_summary(
                        state.project_id,
                        path=self.db_path,
                    )
                except Exception:
                    self._message(
                        "读取套图历史失败",
                        "暂时无法确认该商品是否已有成功套图，请稍后重试。",
                    )
                    return False
                if history_summary.successful_round_count:
                    decision = self._confirm_new_generation_history(
                        state,
                        history_summary,
                    )
                    if decision == "history":
                        self.open_history_dialog(
                            current_project_only=True,
                            current_project_id=state.project_id,
                        )
                        return False
                    if decision != "continue":
                        return False
            generation_round_key = uuid.uuid4().hex
            for slot_index, spec in enumerate(specs):
                spec["generation_round_key"] = generation_round_key
                spec["generation_slot_index"] = slot_index
        if confirm_batch and not self._confirm(
            "确认生成商品套图",
            self._generation_confirmation_message(
                state,
                local_assets,
                specs,
            ),
            confirm_text="确认生成",
            cancel_text="返回修改",
        ):
            return False
        self._persist_state(state)
        run_token = uuid.uuid4().hex
        worker = ProductSuiteGenerateWorker(
            state.project_id,
            specs,
            run_token=run_token,
            generation_round_key=generation_round_key or None,
            aspect_ratio=state.settings["ratio"],
            db_path=self.db_path,
            config=self.config,
            cmhub_config_path=self.cmhub_config_path,
        )
        state.worker = worker
        state.generation_run_token = run_token
        state.generation_stop_requested = False
        state.generation_terminal_streak = 0
        state.generation_job_ids = []
        state.generation_mode = "retry" if retrying else "batch"
        state.generation_retry_job_id = retry_job_id
        state.generation_round_key = generation_round_key
        state.done = 0
        state.failed = 0
        state.total = len(specs)
        state.started_at = time.monotonic()
        if not retrying:
            state.current_job_ids = []
        self._generation_run_states[run_token] = state.key
        worker.progress.connect(self._on_generation_progress_signal)
        worker.finished.connect(self._on_generation_finished_signal)
        worker.cancelled.connect(self._on_generation_finished_signal)
        worker.failed.connect(self._on_generation_failed_signal)
        state.thread = self._start_thread(worker, "商品套图生成")
        self._log_generation_lifecycle(
            state,
            run_token,
            "started",
            {
                "total": len(specs),
                "job_ids": 0,
                "mode": state.generation_mode,
            },
        )
        if state is self._displayed_state:
            self._apply_running_state(state)
            self._refresh_results(state)
        self._status(
            "图片重试已开始；可切换到其他任务"
            if retrying
            else "商品套图生成已开始，共%d张；可切换到其他任务" % len(specs),
            "info",
        )
        return True

    def _generation_confirmation_message(self, state, local_assets, specs):
        counts = {}
        for spec in specs:
            category = str(
                spec.get("category")
                or spec.get("job_type")
                or "未分类"
            )
            counts[category] = counts.get(category, 0) + 1
        ordered = list(product_suite.category_order(state.settings))
        ordered.extend(name for name in counts if name not in ordered)
        category_lines = [
            "%s：%d张" % (name, counts[name])
            for name in ordered
            if counts.get(name, 0) > 0
        ]
        return (
            "店铺：%s\n"
            "商品ID：%s\n"
            "可用商品原图：%d张\n"
            "每张上传图分别作为主图生成：%s\n"
            "%s\n"
            "图片比例：%s\n"
            "生成总数：%d张\n"
            "商品卖点：已填写\n\n"
            "本次生成会消耗 cmhub 点数。"
            % (
                self._account_context_label(state),
                state.item_id or "未绑定商品",
                len(local_assets),
                "是" if state.settings.get("per_image_primary") else "否",
                "\n".join(category_lines),
                state.settings.get("ratio") or "1:1",
                len(specs),
            )
        )

    def _generation_signal_token(self, payload=None):
        token = str((payload or {}).get("run_token") or "")
        sender = self.sender()
        return token or str(getattr(sender, "run_token", "") or "")

    def _generation_state(self, run_token):
        token = str(run_token or "")
        state = self._states.get(self._generation_run_states.get(token))
        if state is None or state.generation_run_token != token:
            return None
        return state

    @Slot(dict)
    def _on_generation_progress_signal(self, payload):
        token = self._generation_signal_token(payload)
        state = self._generation_state(token)
        if state is None:
            return
        self._on_generation_progress(state, payload)

    def _on_generation_progress(self, state, payload):
        if "total" in payload:
            state.total = max(0, int(payload.get("total") or 0))
        state.done = int(payload.get("done", state.done) or 0)
        state.failed = int(payload.get("failed", state.failed) or 0)
        job_ids = payload.get("job_ids")
        if job_ids is not None:
            self._set_generation_job_ids(state, job_ids)
        state.generation_terminal_streak = 0
        if state is self._displayed_state:
            self._refresh_results(state)
            self._refresh_elapsed()

    @Slot(int, str)
    def _on_generation_failed_signal(self, row, error):
        token = self._generation_signal_token()
        state = self._generation_state(token)
        if state is None:
            return
        self._log_generation_lifecycle(
            state,
            token,
            "worker_failed",
            {"has_error": True},
            level="ERROR",
        )
        self._status(
            (
                "图片重试失败：%s"
                if state.generation_mode == "retry"
                else "商品套图生成失败：%s"
            )
            % _user_error(error),
            "danger",
        )

    @Slot(dict)
    def _on_generation_finished_signal(self, result):
        token = self._generation_signal_token(result)
        state = self._generation_state(token)
        if state is None:
            return
        if result.get("job_ids") is not None:
            self._set_generation_job_ids(state, result.get("job_ids"))
        self._log_generation_lifecycle(
            state,
            token,
            "worker_finished",
            {
                "ok": result.get("ok", True),
                "success": result.get("success", 0),
                "failed": result.get("failed", 0),
                "cancelled": result.get(
                    "cancelled_count",
                    result.get("cancelled", 0),
                ),
            },
        )
        if result.get("ok") is False:
            self._reconcile_generation_jobs(state, "生成线程异常结束")
        if (
            state.generation_stop_requested
            and not self._generation_job_ids(state)
            and result.get("cancelled") is True
        ):
            result = dict(result)
            result["total"] = state.total
            result["cancelled_count"] = state.total
        self._finalize_generation(state, token, result, source="worker")

    @Slot()
    def _on_generation_thread_finished_signal(self):
        sender = self.sender()
        token = str(
            sender.property("productSuiteRunToken")
            if sender is not None
            else ""
        )
        self._handle_generation_thread_finished(token)

    def _handle_generation_thread_finished(self, run_token):
        state = self._generation_state(run_token)
        if state is None:
            return
        snapshot = self._generation_job_snapshot(state)
        had_active = bool(snapshot["active"])
        self._log_generation_lifecycle(
            state,
            run_token,
            "thread_finished_fallback",
            snapshot,
            level="WARNING" if snapshot["active"] else "INFO",
        )
        if had_active:
            self._reconcile_generation_jobs(state, "生成线程已结束")
            snapshot = self._generation_job_snapshot(state)
        result = self._generation_result_from_snapshot(snapshot)
        if not snapshot["job_ids"] and state.generation_stop_requested:
            result.update(
                {
                    "total": state.total,
                    "cancelled_count": state.total,
                }
            )
        elif had_active:
            result.update(
                {
                    "ok": False,
                    "error": "生成线程已结束，部分任务可稍后继续查询",
                }
            )
        self._finalize_generation(
            state,
            run_token,
            result,
            source="thread_finished",
        )

    def _check_generation_watchdogs(self):
        for state in list(self._states.values()):
            token = state.generation_run_token
            if not token or not state.generation_running():
                continue
            snapshot = self._generation_job_snapshot(state)
            if snapshot["all_terminal"]:
                state.generation_terminal_streak += 1
            else:
                state.generation_terminal_streak = 0
            if state.generation_terminal_streak < 2:
                continue
            self._log_generation_lifecycle(
                state,
                token,
                "terminal_watchdog_finalize",
                snapshot,
                level="WARNING",
            )
            self._finalize_generation(
                state,
                token,
                self._generation_result_from_snapshot(snapshot),
                source="terminal_watchdog",
            )

    def _generation_job_ids(self, state):
        job_ids = list(state.generation_job_ids)
        if not job_ids and state.worker is not None:
            worker_job_ids = getattr(state.worker, "job_ids", [])
            if not isinstance(worker_job_ids, (list, tuple, set)):
                worker_job_ids = []
            job_ids = [
                int(job_id)
                for job_id in list(worker_job_ids or [])
            ]
            if job_ids:
                self._set_generation_job_ids(state, job_ids)
        return job_ids

    def _set_generation_job_ids(self, state, job_ids):
        normalized = []
        for job_id in job_ids or []:
            value = int(job_id)
            if value not in normalized:
                normalized.append(value)
        state.generation_job_ids = normalized
        if state.generation_mode != "retry":
            state.current_job_ids = list(normalized)
            return
        retry_job_id = state.generation_retry_job_id
        current = [int(job_id) for job_id in state.current_job_ids]
        if retry_job_id in current:
            index = current.index(retry_job_id)
            current[index:index + 1] = normalized
        else:
            for job_id in normalized:
                if job_id not in current:
                    current.append(job_id)
        state.current_job_ids = current

    def _restore_current_generation_results(self, state, *, force=False, allow_running=False):
        if state.project_id is None or (
            state.generation_running() and not allow_running
        ):
            return False
        if state.current_job_ids and not force:
            return False
        try:
            round_key = image_studio.get_current_generation_round(
                state.project_id,
                path=self.db_path,
            )
            jobs = image_studio.list_generation_round_current_jobs(
                state.project_id,
                round_key,
                path=self.db_path,
            )
        except Exception as exc:
            self._status("当前生成结果恢复失败：%s" % _user_error(exc), "danger")
            return False
        state.current_generation_round_key = str(round_key or "")
        state.current_job_ids = [int(job.id) for job in jobs]
        return True

    def _generation_job_snapshot(self, state):
        job_ids = self._generation_job_ids(state)
        counts = {
            "success": 0,
            "failed": 0,
            "cancelled": 0,
            "active": 0,
            "job_ids": len(job_ids),
            "all_terminal": False,
        }
        if not job_ids:
            counts["active"] = max(0, int(state.total or 0))
            return counts
        for job_id in job_ids:
            try:
                job = image_studio.get_job(job_id, path=self.db_path)
            except Exception:
                job = None
            status = str(getattr(job, "status", "") or "")
            if status == "succeeded":
                counts["success"] += 1
            elif status in {"failed", "expired"}:
                counts["failed"] += 1
            elif status == "cancelled":
                counts["cancelled"] += 1
            else:
                counts["active"] += 1
        counts["all_terminal"] = (
            len(job_ids) == int(state.total or 0)
            and counts["active"] == 0
        )
        return counts

    def _generation_result_from_snapshot(self, snapshot):
        return {
            "total": int(snapshot.get("job_ids", 0) or 0),
            "success": int(snapshot.get("success", 0) or 0),
            "failed": int(snapshot.get("failed", 0) or 0),
            "cancelled_count": int(snapshot.get("cancelled", 0) or 0),
        }

    def _reconcile_generation_jobs(self, state, reason):
        for job_id in self._generation_job_ids(state):
            try:
                job = image_studio.get_job(job_id, path=self.db_path)
                if job is None or job.status in {
                    "succeeded",
                    "failed",
                    "expired",
                    "cancelled",
                }:
                    continue
                recovery = (
                    image_studio.JOB_RECOVERY_RESUME
                    if job.task_id
                    else image_studio.JOB_RECOVERY_REGENERATE
                )
                image_studio.update_job_status(
                    job.id,
                    "cancelled",
                    error="%s，任务可稍后继续处理" % reason,
                    recovery_action=recovery,
                    path=self.db_path,
                )
            except Exception as exc:
                self._status(
                    "商品套图任务状态收尾失败：%s" % _user_error(exc),
                    "danger",
                )

    def _finalize_generation(self, state, run_token, result, *, source):
        if self._generation_state(run_token) is not state:
            return False
        retrying = state.generation_mode == "retry"
        snapshot = self._generation_job_snapshot(state)
        if snapshot["job_ids"] and (
            snapshot["all_terminal"]
            or source in {"thread_finished", "terminal_watchdog"}
        ):
            result = dict(result or {})
            result.update(self._generation_result_from_snapshot(snapshot))
        result = dict(result or {})
        stop_requested = state.generation_stop_requested
        success = int(result.get("success", 0) or 0)
        failed = int(result.get("failed", 0) or 0)
        cancelled = int(
            result.get("cancelled_count", result.get("cancelled", 0)) or 0
        )
        total = int(result.get("total", state.total) or state.total)
        active = max(0, total - success - failed - cancelled)
        elapsed = (
            int(max(0, time.monotonic() - state.started_at))
            if state.started_at
            else 0
        )
        promoted = False
        if not retrying and state.generation_round_key and success:
            try:
                promoted = image_studio.promote_generation_round_if_success(
                    state.project_id,
                    state.generation_round_key,
                    path=self.db_path,
                )
            except Exception as exc:
                self._status("当前生成轮次保存失败：%s" % _user_error(exc), "danger")
            self._restore_current_generation_results(
                state,
                force=True,
                allow_running=True,
            )
        elif not retrying:
            self._restore_current_generation_results(
                state,
                force=True,
                allow_running=True,
            )
        elif state.generation_round_key:
            self._restore_current_generation_results(
                state,
                force=True,
                allow_running=True,
            )
        self._generation_run_states.pop(run_token, None)
        state.generation_run_token = ""
        state.generation_stop_requested = False
        state.generation_terminal_streak = 0
        state.generation_job_ids = []
        state.generation_retry_job_id = None
        state.generation_round_key = ""
        state.worker = None
        state.thread = None
        state.done = success + failed + cancelled
        state.failed = failed
        state.total = total
        state.started_at = None
        if state is self._displayed_state:
            self._apply_running_state(state)
            self._refresh_results(state)
            self._refresh_elapsed()
        self._log_generation_lifecycle(
            state,
            run_token,
            "finalized",
            {
                "source": source,
                "total": total,
                "success": success,
                "failed": failed,
                "cancelled": cancelled,
                "active": active,
                "elapsed_seconds": elapsed,
                "mode": "retry" if retrying else "batch",
                "current_round_promoted": promoted,
            },
            level="WARNING" if active or result.get("ok") is False else "INFO",
        )
        if state.key not in self._states:
            return True
        if active or result.get("ok") is False:
            message = str(
                result.get("error")
                or "生成线程已结束，部分任务可稍后继续查询"
            )
            if state is self._displayed_state:
                self._message(
                    "图片重试未完整结束"
                    if retrying
                    else "商品套图生成未完整结束",
                    _user_error(message),
                )
            else:
                self._status(
                    (
                        "套图任务%d图片重试未完整结束"
                        if retrying
                        else "套图任务%d生成未完整结束"
                    )
                    % state.serial,
                    "danger",
                )
            return True
        if stop_requested or cancelled:
            if state is self._displayed_state:
                if retrying:
                    self._message(
                        "图片重试已停止",
                        "本次重试：成功%d张，失败%d张，停止%d张；"
                        "已提交任务可稍后继续查询；总用时%d秒。"
                        % (success, failed, cancelled, elapsed),
                        icon=QMessageBox.Information,
                    )
                else:
                    self._message(
                        "商品套图生成已停止",
                        "本轮共%d张：成功%d张，失败%d张，停止%d张；"
                        "已提交任务可稍后继续查询；总用时%d秒。"
                        % (total, success, failed, cancelled, elapsed),
                        icon=QMessageBox.Information,
                    )
            self._status(
                (
                    "图片重试已停止：成功%d张，失败%d张，停止%d张"
                    if retrying
                    else "商品套图生成已停止：成功%d张，失败%d张，停止%d张"
                )
                % (success, failed, cancelled),
                "warning",
            )
            return True
        if state is self._displayed_state:
            if retrying:
                self._message(
                    "图片重试成功" if success and not failed else "图片重试失败",
                    "本次重试：成功%d张，失败%d张，停止%d张；总用时%d秒。"
                    % (success, failed, cancelled, elapsed),
                    icon=QMessageBox.Information,
                )
            else:
                self._message(
                    "商品套图生成完成",
                    "本轮共%d张：成功%d张，失败%d张，停止%d张；总用时%d秒。"
                    % (total, success, failed, cancelled, elapsed),
                    icon=QMessageBox.Information,
                )
        if retrying:
            self._status(
                "图片重试成功" if success and not failed else "图片重试失败，请查看失败卡片",
                "success" if success and not failed else "danger",
            )
        else:
            self._status(
                "商品套图生成完成：成功%d张，失败%d张" % (success, failed),
                "success",
            )
        return True

    def _log_generation_lifecycle(
        self,
        state,
        run_token,
        event,
        payload=None,
        *,
        level="INFO",
    ):
        data = {
            "run_token": str(run_token or "")[:8],
            "project_id": getattr(state, "project_id", None),
            "event": str(event or ""),
        }
        data.update(dict(payload or {}))
        try:
            diagnostics.write_diagnostic_log(
                "商品套图生成生命周期",
                level=level,
                step="product_suite_generation",
                task_id=getattr(state, "project_id", None),
                item_id=getattr(state, "item_id", None),
                payload=data,
                log_dir=appconfig.diagnostic_log_dir(self.config),
            )
        except Exception:
            pass

    def _apply_running_state(self, state):
        generation_running = state.generation_running()
        pull_running = state.pull_running()
        self.pull_button.setText(
            "正在停止..."
            if pull_running and state.pull_stop_requested
            else "停止拉取蝦皮"
            if pull_running
            else "拉取蝦皮主图"
        )
        self.account_combo.setEnabled(not generation_running and not pull_running)
        self.item_id_edit.setEnabled(not generation_running and not pull_running)
        self._refresh_add_images_action(state)
        self.original_list.setEnabled(not generation_running)
        self._refresh_original_selection_controls()
        for widget in (
            self.platform_combo,
            self.country_combo,
            self.language_combo,
            self.ratio_combo,
            self.per_image_checkbox,
            self.prompt_edit,
            self.add_category_button,
            self.custom_category_edit,
        ):
            widget.setEnabled(not generation_running)
        for row in self.category_rows.values():
            row.set_controls_enabled(not generation_running)
        self.generate_button.setEnabled(True)
        if generation_running:
            self.generate_button.setText(
                "正在停止..."
                if state.generation_stop_requested
                else "停止重试"
                if state.generation_mode == "retry"
                else "停止生成"
            )
            self.generate_button.setStyleSheet(
                "QPushButton { background: #cf222e; color: white; border-color: #a40e26; font-weight: 600; }"
                "QPushButton:hover { background: #a40e26; }"
            )
        else:
            self.generate_button.setStyleSheet(
                "QPushButton { background: #2f6fed; color: white; border-color: #2459c4; font-weight: 600; }"
                "QPushButton:hover { background: #245fce; }"
            )
            self._refresh_totals(state)
        ai_running = state.ai_worker is not None
        self.ai_write_button.setEnabled(not ai_running and not generation_running)
        self.ai_cancel_button.setVisible(ai_running)
        self._update_context_actions(state)

    def _refresh_elapsed(self):
        state = self._displayed_state
        if state is None:
            return
        elapsed = int(max(0, time.monotonic() - state.started_at)) if state.started_at else 0
        self.elapsed_label.setText(
            "%s %d/%d（%d秒） · 失败 %d" % (
                "重试" if state.generation_mode == "retry" else "套图",
                state.done,
                state.total,
                elapsed,
                state.failed,
            )
        )
        self.progress_bar.setRange(0, max(1, state.total))
        self.progress_bar.setValue(min(state.done, max(1, state.total)))
        if state.ai_worker is not None and state.ai_started_at is not None:
            ai_elapsed = int(max(0, time.monotonic() - state.ai_started_at))
            self.ai_write_button.setText("AI 帮写中（%d秒）" % ai_elapsed)
        else:
            self.ai_write_button.setText("AI 帮写")

    def _jobs_for_state(self, state):
        if state.project_id is None:
            return []
        try:
            jobs = image_studio.list_jobs(state.project_id, path=self.db_path)
        except Exception as exc:
            self._status("生成结果读取失败：%s" % _user_error(exc), "danger")
            return []
        by_id = {int(job.id): job for job in jobs}
        return [
            by_id[int(job_id)]
            for job_id in state.current_job_ids
            if int(job_id) in by_id
        ]

    def _refresh_results(self, state):
        while self.result_grid.count():
            item = self.result_grid.takeAt(0)
            widget = item.widget()
            if widget is not None:
                widget.deleteLater()
        jobs = self._jobs_for_state(state)
        assets = {}
        if state.project_id is not None:
            try:
                assets = {
                    int(asset.id): asset
                    for asset in image_studio.list_assets(state.project_id, path=self.db_path)
                }
            except Exception:
                assets = {}
        success = 0
        if not jobs:
            empty = QLabel("还没有生成结果，点击左侧“生成套图”开始")
            empty.setAlignment(Qt.AlignCenter)
            empty.setStyleSheet("color: #6b7280; padding: 48px;")
            self.result_grid.addWidget(empty, 0, 0, 1, 3)
        else:
            columns = max(2, min(4, max(1, self.result_scroll.viewport().width() // 200)))
            for index, job in enumerate(jobs):
                asset = assets.get(int(job.output_asset_id or 0))
                if job.status == "succeeded" and asset is not None and _asset_usable(asset):
                    success += 1
                card = SuiteResultCard(job, asset)
                card.previewRequested.connect(self.preview_job)
                card.retryRequested.connect(self.retry_job)
                card.menuRequested.connect(self._show_job_menu)
                card.deleteRequested.connect(self.delete_job_asset)
                self.result_grid.addWidget(card, index // columns, index % columns)
        self.result_summary_label.setText("共 %d 张 · 成功 %d 张" % (len(jobs), success))
        self.undo_button.setVisible(bool(state.undo_records))

    def open_history_dialog(
        self,
        checked=False,
        *,
        current_project_only=False,
        current_project_id=None,
    ):
        state = self._displayed_state
        if current_project_id is None:
            current_project_id = state.project_id if state is not None else None

        dialog = self._history_dialog
        if dialog is not None:
            try:
                dialog.set_current_project(current_project_id, refresh=False)
                dialog.set_current_project_filter(
                    current_project_only,
                    refresh=False,
                )
                dialog.refresh_history()
                dialog.show()
                dialog.raise_()
                dialog.activateWindow()
                return
            except RuntimeError:
                pass
            self._history_dialog = None

        dialog = ProductSuiteGlobalHistoryDialog(
            current_project_id=current_project_id,
            current_project_only=current_project_only,
            db_path=self.db_path,
            parent=self,
        )
        dialog.destroyed.connect(
            lambda _object=None, current=dialog: self._clear_history_dialog(current)
        )
        self._history_dialog = dialog
        dialog.show()
        dialog.raise_()
        dialog.activateWindow()

    def _clear_history_dialog(self, dialog):
        if self._history_dialog is dialog:
            self._history_dialog = None

    def _close_history_dialog_for_project(self, project_id=None):
        if project_id is not None:
            return
        dialog = self._history_dialog
        if dialog is None:
            return
        try:
            dialog.close()
            self._history_dialog = None
        except RuntimeError:
            self._history_dialog = None

    def preview_job(self, job):
        asset = image_studio.get_asset(job.output_asset_id, path=self.db_path) if job.output_asset_id else None
        if asset is None or not _asset_usable(asset):
            self._status("这张生成图片尚不可预览", "warning")
            return
        ProductSuitePreviewDialog(asset.local_path, "%s预览" % job.job_type, self).exec()

    def retry_job(self, job):
        state = self._displayed_state
        if state is None:
            return
        if state.generation_running():
            self._message("当前任务正在生成", "请等待当前生成结束或停止后再重试单张图片。")
            return
        if str(getattr(job, "status", "") or "") not in {
            "failed",
            "expired",
            "cancelled",
        }:
            self._status("当前图片无需重试", "warning")
            return
        spec = {
            "source_asset_id": job.source_asset_id,
            "job_type": job.job_type,
            "prompt": job.prompt,
        }
        self.start_generation(state, specs=[spec], retry_job_id=job.id)

    def _show_job_menu(self, job, global_position):
        menu = QMenu(self)
        preview_action = menu.addAction("预览")
        copy_action = menu.addAction("复制路径")
        folder_action = menu.addAction("打开文件夹")
        retry_action = menu.addAction("重新生成")
        delete_action = menu.addAction("删除")
        action = menu.exec(global_position)
        asset = image_studio.get_asset(job.output_asset_id, path=self.db_path) if job.output_asset_id else None
        if action is preview_action:
            self.preview_job(job)
        elif action is copy_action:
            if asset is None or not _asset_usable(asset):
                self._status("当前图片没有可复制的本地路径", "warning")
            else:
                QApplication.clipboard().setText(asset.local_path)
                self._status("生成图片路径已复制", "success")
        elif action is folder_action:
            if asset is not None and _asset_usable(asset):
                try:
                    file_manager.open_in_file_manager(os.path.dirname(asset.local_path))
                except Exception as exc:
                    self._message("打开文件夹失败", _user_error(exc))
            else:
                self.open_project_folder()
        elif action is retry_action:
            self.retry_job(job)
        elif action is delete_action:
            self.delete_job_asset(job)

    def delete_job_asset(self, job):
        state = self._displayed_state
        if state is None or not job.output_asset_id:
            return
        if not self._confirm("删除生成图片", "确认把这张图片移到当前商品的废纸篓吗？"):
            return
        try:
            record = image_studio_images.trash_generated_asset(
                job.output_asset_id,
                path=self.db_path,
                config=self.config,
            )
        except Exception as exc:
            self._message("删除生成图片失败", _user_error(exc))
            return
        state.undo_records.append(record)
        self._refresh_results(state)
        self._status("生成图片已删除，可点击“撤销删除”恢复", "success")

    def undo_delete(self, checked=False):
        state = self._displayed_state
        if state is None or not state.undo_records:
            return
        record = state.undo_records.pop()
        try:
            image_studio_images.restore_trashed_asset(
                record,
                path=self.db_path,
                config=self.config,
            )
        except Exception as exc:
            state.undo_records.append(record)
            self._message("撤销删除失败", _user_error(exc))
            return
        self._refresh_results(state)
        self._status("生成图片已恢复", "success")

    def _show_more_menu(self):
        menu = QMenu(self)
        delete_all_action = menu.addAction("删除当前视图全部图片")
        if menu.exec(self.more_button.mapToGlobal(self.more_button.rect().bottomLeft())) is delete_all_action:
            self.delete_all_visible_results()

    def delete_all_visible_results(self):
        state = self._displayed_state
        if state is None:
            return
        jobs = [job for job in self._jobs_for_state(state) if job.output_asset_id]
        if not jobs:
            self._status("当前视图没有可删除的生成图片", "warning")
            return
        if not self._confirm(
            "删除全部生成图片",
            "确认把当前视图中的%d张生成图片移到废纸篓吗？" % len(jobs),
            destructive=True,
        ):
            return
        failures = 0
        for job in jobs:
            try:
                state.undo_records.append(
                    image_studio_images.trash_generated_asset(
                        job.output_asset_id,
                        path=self.db_path,
                        config=self.config,
                    )
                )
            except Exception:
                failures += 1
        self._refresh_results(state)
        if failures:
            self._message("部分图片未删除", "有%d张图片无法删除，请查看当前结果。" % failures)
        else:
            self._status("当前视图的生成图片已移到废纸篓", "success")

    def open_project_folder(self, checked=False):
        state = self._displayed_state
        if state is None or state.project_id is None:
            self._message("未创建套图任务", "请先选择账号并添加本地图片，或输入商品ID后拉取蝦皮主图。")
            return
        project = image_studio.get_project(state.project_id, path=self.db_path)
        if project is None:
            self._message("商品任务不存在", "当前商品套图任务已经不存在。")
            return
        target = image_studio.default_project_image_dirs(project, config=self.config)["generated"]
        os.makedirs(target, exist_ok=True)
        try:
            file_manager.open_in_file_manager(target)
        except Exception as exc:
            self._message("打开文件夹失败", _user_error(exc))

    def resizeEvent(self, event):
        super().resizeEvent(event)
        if not self._result_refresh_pending:
            self._result_refresh_pending = True
            QTimer.singleShot(80, self._refresh_after_resize)

    def _refresh_after_resize(self):
        self._result_refresh_pending = False
        if self._displayed_state is not None:
            self._refresh_results(self._displayed_state)

    def closeEvent(self, event):
        self._close_history_dialog_for_project()
        if self._displayed_state is not None:
            self._save_controls_to_state(self._displayed_state)
        for state in list(self._states.values()):
            self._flush_prompt_save(state)
        for state in list(self._states.values()) + list(self._retired_states):
            for worker in (state.worker, state.pull_worker, state.import_worker, state.ai_worker):
                if worker is not None and hasattr(worker, "cancel"):
                    worker.cancel()
            for worker, thread in list(state.downloads.values()):
                worker.cancel()
        for state in list(self._states.values()) + list(self._retired_states):
            self._release_prompt_save_timer(state)
        self._generation_run_states.clear()
        self._pull_run_states.clear()
        super().closeEvent(event)