feat(bulletin): 公告栏系统完整实现

Co-Authored-By: Claude <noreply@anthropic.com>

src/gui/ALBulletinDialog.py

@@ -0,0 +1,382 @@
+# -*- coding: utf-8 -*-
+"""
+Copyright (c) 2026 KenanZhu.
+All rights reserved.
+
+This software is provided "as is", without any warranty of any kind.
+You may use, modify, and distribute this file under the terms of the MIT License.
+See the LICENSE file for details.
+"""
+import requests
+
+from datetime import datetime, timedelta
+from typing import Any
+
+from PySide6.QtCore import (
+    Qt,
+    QThread,
+    Signal,
+    Slot,
+    QTimer
+)
+from PySide6.QtGui import (
+    QFont
+)
+from PySide6.QtWidgets import (
+    QDialog,
+    QHBoxLayout,
+    QLabel,
+    QListWidgetItem,
+    QMessageBox,
+    QVBoxLayout,
+    QWidget
+)
+
+from gui.ALStatusLabel import ALStatusLabel
+from gui.resources.ui.Ui_ALBulletinDialog import Ui_ALBulletinDialog
+from managers.bulletin.BulletinManager import instance as bulletinInstance
+
+
+class ALBulletinFetchWorker(QThread):
+    """
+        Worker thread for fetching bulletins from the server.
+    """
+
+    fetchWorkerIsFinished = Signal(dict)
+    fetchWorkerFinishedWithError = Signal(str)
+
+    def __init__(
+        self,
+        parent=None,
+        request_url: str = "",
+        params: dict = None
+    ):
+
+        super().__init__(parent)
+        self.__request_url = request_url.rstrip("/") if request_url else ""
+        self.__params = params or {}
+
+    def run(
+        self
+    ):
+
+        try:
+            response = requests.get(
+                self.__request_url, params=self.__params, timeout=5
+            )
+            response.raise_for_status()
+            r = response.json()
+            if r.get("code") == 200:
+                data = r.get("data", {})
+                self.fetchWorkerIsFinished.emit(data)
+            else:
+                raise Exception(
+                    f"服务器返回错误: [{r.get('code', '未知代码')}] {r.get('msg', '未知错误')}"
+                )
+        except requests.RequestException as e:
+            self.fetchWorkerFinishedWithError.emit(f"获取公告数据时发生网络错误: \n{e}")
+        except Exception as e:
+            self.fetchWorkerFinishedWithError.emit(f"获取公告数据时发生未知错误: \n{e}")
+
+
+class ALBulletinItemWidget(QWidget):
+    """
+        Single bulletin item widget for the bulletin list.
+    """
+
+    def __init__(
+        self,
+        parent=None,
+        bulletin: dict[str, Any] = None
+    ):
+
+        super().__init__(parent)
+        self.__bulletin = bulletin.copy() if bulletin else {}
+        self.modifyUi()
+
+    def modifyUi(
+        self
+    ):
+
+        self.ItemWidgetLayout = QVBoxLayout()
+        self.ItemWidgetLayout.setSpacing(10)
+        self.ItemWidgetLayout.setContentsMargins(10, 5, 10, 5)
+        self.BulletinTitleLayout = QHBoxLayout()
+        self.BulletinTitleLabel = QLabel(self.__bulletin.get("title", "无标题"))
+        titleFont = QFont()
+        titleFont.setBold(True)
+        self.BulletinTitleLabel.setFont(titleFont)
+        self.BulletinTitleLayout.addWidget(self.BulletinTitleLabel)
+        if self.__bulletin.get("isNew", False):
+            self.NewIndicatorLabel = QLabel("新 !")
+            self.NewIndicatorLabel.setStyleSheet(
+                "color: #DC0000;"\
+                "font-size: 10px;"\
+                "font-weight: bold;"\
+                "font-style: italic;"
+            )
+            self.NewIndicatorLabel.setFixedSize(25, 25)
+            self.BulletinTitleLayout.addWidget(self.NewIndicatorLabel)
+        else:
+            self.NewIndicatorLabel = None
+        if self.__bulletin.get("isEdited", False):
+            self.BulletinIsEditedLabel = QLabel("(已编辑)")
+            self.BulletinIsEditedLabel.setStyleSheet(
+                "color: #FF9800;"\
+                "font-size: 10px;"
+            )
+            self.BulletinTitleLayout.addWidget(self.BulletinIsEditedLabel)
+        self.BulletinTitleLayout.addStretch()
+        self.ItemWidgetLayout.addLayout(self.BulletinTitleLayout)
+        self.BulletinInfoLayout = QHBoxLayout()
+        self.BulletinDateLabel = QLabel()
+        date_time = datetime.fromisoformat(self.__bulletin.get("dateTime", ""))
+        self.BulletinDateLabel.setText(date_time.strftime("%Y-%m-%d %H:%M:%S"))
+        self.BulletinDateLabel.setStyleSheet("color: #969696; font-size: 11px;")
+        self.BulletinInfoLayout.addWidget(self.BulletinDateLabel)
+        self.BulletinAuthorLabel = QLabel(self.__bulletin.get("author", "未知"))
+        self.BulletinAuthorLabel.setStyleSheet("color: #969696; font-size: 11px;")
+        self.BulletinInfoLayout.addWidget(self.BulletinAuthorLabel)
+        self.BulletinInfoLayout.addStretch()
+        self.ItemWidgetLayout.addLayout(self.BulletinInfoLayout)
+        self.setLayout(self.ItemWidgetLayout)
+        self.__bulletin = None
+
+    def markAsRead(
+        self
+    ):
+
+        if self.NewIndicatorLabel:
+            self.NewIndicatorLabel.hide()
+
+
+class ALBulletinDialog(QDialog, Ui_ALBulletinDialog):
+    """
+        Bulletin viewer dialog.
+    """
+
+    def __init__(
+        self,
+        parent=None
+    ):
+        super().__init__(parent)
+        self.__sync_timer: QTimer | None = None
+        self.__fetch_worker: ALBulletinFetchWorker | None = None
+        self.__bulletin_mgr = bulletinInstance()
+
+        self.setupUi(self)
+        self.modifyUi()
+        self.connectSignals()
+        self.setupTimer()
+        if self.shouldAutoSync():
+            self.syncBulletin()
+
+    def modifyUi(
+        self
+    ):
+
+        self.ALSyncStatusLabel = ALStatusLabel(self)
+        self.ALSyncStatusLabel.setFixedSize(30, 30)
+        self.SyncLayout.replaceWidget(
+            self.SyncStatusPlaceholder, self.ALSyncStatusLabel
+        )
+
+        titleFont = QFont()
+        titleFont.setBold(True)
+        titleFont.setPointSize(15)
+        self.BulletinTitleLabel.setFont(titleFont)
+        self.BulletinDateLabel.setStyleSheet("color: #969696;")
+        self.BulletinAuthorLabel.setStyleSheet("color: #969696;")
+        self.BulletinIsEditedLabel.setStyleSheet("color: #FF9800;")
+        self.BulletinIsEditedLabel.hide()
+        last_time = self.__bulletin_mgr.lastSyncTime()
+        if last_time:
+            self.setLastSyncTime(last_time)
+        self.updateBulletinList(self.__bulletin_mgr.bulletins())
+
+    def shouldAutoSync(
+        self
+    ) -> bool:
+
+        last = self.__bulletin_mgr.lastSyncTime()
+        if last is None:
+            return True
+        try:
+            last_dt = datetime.fromisoformat(last)
+            interval_min = max(self.__bulletin_mgr.syncInterval()//2, 1)
+            threshold = timedelta(minutes=interval_min)
+            return (datetime.now().astimezone() - last_dt) > threshold
+        except (ValueError, TypeError):
+            return True
+
+    def setLastSyncTime(
+        self,
+        iso_str: str
+    ):
+
+        try:
+            dt = datetime.fromisoformat(iso_str)
+            self.LastSyncDateTimeEdit.setDateTime(dt)
+        except (ValueError, TypeError):
+            pass
+
+    def connectSignals(
+        self
+    ):
+
+        self.BulletinListWidget.itemClicked.connect(self.onBulletinListWidgetItemClicked)
+        self.SyncButton.clicked.connect(self.syncBulletin)
+
+    def setupTimer(
+        self
+    ):
+
+        self.__sync_timer = QTimer(self)
+        self.__sync_timer.timeout.connect(self.syncBulletin)
+        self.__sync_timer.start(self.__bulletin_mgr.syncInterval()*60*1000)
+
+    def updateBulletinList(
+        self,
+        bulletins: list[dict]
+    ):
+
+        self.BulletinListWidget.clear()
+        sorted_list = sorted(
+            bulletins, key=lambda x: x.get("dateTime", ""), reverse=True
+        )
+        for bulletin in sorted_list:
+            item = QListWidgetItem()
+            item.setData(Qt.UserRole, bulletin)
+            widget = ALBulletinItemWidget(self, bulletin)
+            item.setSizeHint(widget.sizeHint())
+            self.BulletinListWidget.addItem(item)
+            self.BulletinListWidget.setItemWidget(item, widget)
+
+    def showBulletin(
+        self,
+        bulletin: dict
+    ):
+
+        self.BulletinTitleLabel.setText(bulletin.get("title", "无标题"))
+        date_time = datetime.fromisoformat(bulletin.get("dateTime", ""))
+        self.BulletinDateLabel.setText(date_time.strftime("%Y-%m-%d %H:%M:%S"))
+        self.BulletinAuthorLabel.setText(bulletin.get("author", "未知"))
+        if bulletin.get("isEdited", False):
+            self.BulletinIsEditedLabel.show()
+        else:
+            self.BulletinIsEditedLabel.hide()
+        self.BulletinContentTextBrowser.setHtml(
+            "<div style='font-size: 14px;'>{content}</div>".format(
+                content=bulletin.get("content", "无内容")
+            )
+        )
+
+    def clearBulletin(
+        self
+    ):
+
+        self.BulletinTitleLabel.setText("")
+        self.BulletinDateLabel.setText("")
+        self.BulletinAuthorLabel.setText("")
+        self.BulletinContentTextBrowser.setText("")
+        self.BulletinIsEditedLabel.hide()
+
+    def syncBulletin(
+        self
+    ):
+
+        if self.__fetch_worker is not None:
+            return
+        self.SyncButton.setEnabled(False)
+        self.SyncButton.setText("同步中...")
+        self.ALSyncStatusLabel.status = ALStatusLabel.Status.RUNNING
+        self.SyncStatusDetailLabel.setText("")
+        self.SyncStatusDetailLabel.setStyleSheet("")
+        params = self.__bulletin_mgr.getSyncDateTimeAndRange()
+        self.__fetch_worker = ALBulletinFetchWorker(
+            self, self.__bulletin_mgr.apiUrl(), params
+        )
+        self.__fetch_worker.fetchWorkerIsFinished.connect(self.onBulletinsFetched)
+        self.__fetch_worker.fetchWorkerFinishedWithError.connect(self.onBulletinsFetchError)
+        self.__fetch_worker.start()
+
+    @Slot(dict)
+    def onBulletinsFetched(
+        self,
+        data: dict
+    ):
+
+        if self.__fetch_worker:
+            self.__fetch_worker.wait(2000)
+            self.__fetch_worker.fetchWorkerIsFinished.disconnect(self.onBulletinsFetched)
+            self.__fetch_worker.fetchWorkerFinishedWithError.disconnect(self.onBulletinsFetchError)
+            self.__fetch_worker.deleteLater()
+            self.__fetch_worker = None
+        bulletins = data.get("bulletins", [])
+        delete_ids = data.get("delete_ids", [])
+        merged = self.__bulletin_mgr.updateAndMergeBulletins(bulletins, delete_ids)
+        self.__bulletin_mgr.setLastSyncTime(datetime.now().astimezone().isoformat())
+        self.SyncButton.setEnabled(True)
+        self.SyncButton.setText("同步")
+        self.ALSyncStatusLabel.status = ALStatusLabel.Status.SUCCESS
+        self.SyncStatusDetailLabel.setText("同步成功")
+        self.SyncStatusDetailLabel.setStyleSheet("color: green;")
+        QTimer.singleShot(3000, self.clearSyncStatus)
+
+        self.setLastSyncTime(self.__bulletin_mgr.lastSyncTime())
+        self.updateBulletinList(merged)
+        self.clearBulletin()
+        interval_ms = self.__bulletin_mgr.syncInterval()*60*1000
+        if self.__sync_timer:
+            self.__sync_timer.start(interval_ms)
+
+    @Slot(str)
+    def onBulletinsFetchError(
+        self,
+        error_message: str
+    ):
+
+        if self.__fetch_worker:
+            self.__fetch_worker.wait(2000)
+            self.__fetch_worker.fetchWorkerIsFinished.disconnect(self.onBulletinsFetched)
+            self.__fetch_worker.fetchWorkerFinishedWithError.disconnect(self.onBulletinsFetchError)
+            self.__fetch_worker.deleteLater()
+            self.__fetch_worker = None
+        self.SyncButton.setEnabled(True)
+        self.SyncButton.setText("重试")
+        self.ALSyncStatusLabel.status = ALStatusLabel.Status.FAILURE
+        self.SyncStatusDetailLabel.setText("同步失败，请检查网络连接")
+        self.SyncStatusDetailLabel.setStyleSheet("color: red;")
+        QMessageBox.warning(
+            self,
+            "警告 - AutoLibrary",
+            f"同步失败：{error_message}"
+        )
+        interval_ms = self.__bulletin_mgr.syncInterval()*60*1000
+        if self.__sync_timer:
+            self.__sync_timer.start(interval_ms)
+
+    def clearSyncStatus(
+        self
+    ):
+
+        self.ALSyncStatusLabel.status = ALStatusLabel.Status.WAITING
+        self.SyncStatusDetailLabel.setText("")
+        self.SyncStatusDetailLabel.setStyleSheet("")
+
+    @Slot(QListWidgetItem)
+    def onBulletinListWidgetItemClicked(
+        self,
+        item: QListWidgetItem
+    ):
+
+        if item is None or item.data(Qt.UserRole) is None:
+            return
+        bulletin = item.data(Qt.UserRole)
+        if bulletin.get("isNew", False):
+            bulletin["isNew"] = False
+            widget = self.BulletinListWidget.itemWidget(item)
+            widget.markAsRead()
+            item.setData(Qt.UserRole, bulletin)
+            self.__bulletin_mgr.markBulletinAsRead(bulletin["id"])
+        self.showBulletin(bulletin)

src/gui/ALBulletinPoller.py

@@ -0,0 +1,170 @@
+# -*- coding: utf-8 -*-
+"""
+Copyright (c) 2026 KenanZhu.
+All rights reserved.
+
+This software is provided "as is", without any warranty of any kind.
+You may use, modify, and distribute this file under the terms of the MIT License.
+See the LICENSE file for details.
+"""
+from datetime import datetime
+
+from PySide6.QtCore import (
+    QObject,
+    QTimer,
+    Signal,
+    Slot
+)
+
+from gui.ALBulletinDialog import ALBulletinFetchWorker
+from managers.bulletin.BulletinManager import instance as bulletinInstance
+
+
+class ALBulletinPoller(QObject):
+    """
+        Background bulletin poller.
+
+        Owns the periodic poll timer and the ALBulletinFetchWorker
+        lifecycle. Emits signals when new bulletins are detected so
+        the owner can show tray notifications without knowing the
+        fetch / merge details.
+    """
+
+    newBulletinsDetected = Signal(int)
+
+    def __init__(
+        self,
+        parent=None
+    ):
+
+        super().__init__(parent)
+        self.__timer = QTimer(self)
+        self.__timer.timeout.connect(self.__poll)
+        self.__worker = None
+        self.__dialog_open = False
+        self.__mgr = bulletinInstance()
+
+    def start(
+        self
+    ):
+
+        interval_ms = self.__mgr.syncInterval()*60*1000
+        self.__timer.start(interval_ms)
+
+    def stop(
+        self
+    ):
+
+        self.__timer.stop()
+        self.__cleanupWorker()
+
+    def restart(
+        self
+    ):
+
+        self.stop()
+        self.start()
+
+    def fetchNow(
+        self
+    ):
+
+        if self.__worker is not None:
+            return
+        if self.__dialog_open:
+            return
+        self.__doFetch()
+
+    def isPolling(
+        self
+    ) -> bool:
+
+        return self.__timer.isActive()
+
+    def setDialogOpen(
+        self,
+        open: bool
+    ):
+
+        self.__dialog_open = open
+
+    def __doFetch(
+        self
+    ):
+
+        params = self.__mgr.getSyncDateTimeAndRange()
+        self.__worker = ALBulletinFetchWorker(
+            self, self.__mgr.apiUrl(), params
+        )
+        self.__worker.fetchWorkerIsFinished.connect(self.__onFetched)
+        self.__worker.fetchWorkerFinishedWithError.connect(self.__onError)
+        self.__worker.start()
+
+    @Slot()
+    def __poll(
+        self
+    ):
+
+        if self.__worker is not None:
+            return
+        if self.__dialog_open:
+            return
+        self.__doFetch()
+
+    @Slot(dict)
+    def __onFetched(
+        self,
+        data: dict
+    ):
+
+        if self.__worker is None:
+            return
+        self.__worker.fetchWorkerIsFinished.disconnect(self.__onFetched)
+        self.__worker.fetchWorkerFinishedWithError.disconnect(self.__onError)
+        self.__worker.wait(2000)
+        self.__worker.deleteLater()
+        self.__worker = None
+        old_ids = {b["id"] for b in self.__mgr.bulletins()}
+        bulletins = data.get("bulletins", [])
+        delete_ids = data.get("delete_ids", [])
+        self.__mgr.updateAndMergeBulletins(bulletins, delete_ids)
+        self.__mgr.setLastSyncTime(datetime.now().astimezone().isoformat())
+        new_ids = {b["id"] for b in bulletins if b["id"] not in old_ids}
+        if new_ids:
+            self.newBulletinsDetected.emit(len(new_ids))
+        interval_ms = self.__mgr.syncInterval()*60*1000
+        self.__timer.start(interval_ms)
+
+    @Slot(str)
+    def __onError(
+        self,
+        error_message: str
+    ):
+
+        if self.__worker is None:
+            return
+        self.__worker.fetchWorkerIsFinished.disconnect(self.__onFetched)
+        self.__worker.fetchWorkerFinishedWithError.disconnect(self.__onError)
+        self.__worker.wait(2000)
+        self.__worker.deleteLater()
+        self.__worker = None
+        interval_ms = self.__mgr.syncInterval()*60*1000
+        self.__timer.start(interval_ms)
+
+    def __cleanupWorker(
+        self
+    ):
+
+        if self.__worker is None:
+            return
+        try:
+            self.__worker.fetchWorkerIsFinished.disconnect()
+        except (TypeError, RuntimeError):
+            pass
+        try:
+            self.__worker.fetchWorkerFinishedWithError.disconnect()
+        except (TypeError, RuntimeError):
+            pass
+        self.__worker.wait(2000)
+        self.__worker.deleteLater()
+        self.__worker = None

src/gui/ALMainWindow.py

@@ -32,6 +32,8 @@ from PySide6.QtWidgets import (
 
 from base.MsgBase import MsgBase
 from gui.ALAboutDialog import ALAboutDialog
+from gui.ALBulletinDialog import ALBulletinDialog
+from gui.ALBulletinPoller import ALBulletinPoller
 from gui.ALConfigWidget import ALConfigWidget
 from gui.ALSettingsWidget import ALSettingsWidget
 from gui.ALMainWorkers import (
@@ -41,6 +43,7 @@ from gui.ALMainWorkers import (
 from gui.ALTimerTaskManageWidget import ALTimerTaskManageWidget
 from gui.resources import ALResource
 from gui.resources.ui.Ui_ALMainWindow import Ui_ALMainWindow
+from managers.bulletin.BulletinManager import instance as bulletinInstance
 from managers.config.ConfigUtils import ConfigUtils
 
 
@@ -62,6 +65,8 @@ class ALMainWindow(MsgBase, QMainWindow, Ui_ALMainWindow):
         self.__alTimerTaskManageWidget = None
         self.__alConfigWidget = None
         self.__alSettingsWidget = None
+        self.__alBulletinDialog = None
+        self.__bulletin_poller = ALBulletinPoller(self)
         self.__auto_lib_thread = None
         self.__current_timer_task_thread = None
         self.__is_running_timer_task = False
@@ -72,6 +77,11 @@ class ALMainWindow(MsgBase, QMainWindow, Ui_ALMainWindow):
         self.connectSignals()
         self.startMsgPolling()
         self.startTimerTaskPolling()
+
+        self.__bulletin_poller.start()
+        if bulletinInstance().autoFetch():
+            QTimer.singleShot(1000, self.__bulletin_poller.fetchNow)
+
         self._showLog("主窗口初始化完成")
 
     def modifyUi(
@@ -84,6 +94,8 @@ class ALMainWindow(MsgBase, QMainWindow, Ui_ALMainWindow):
         self.ManualAction.triggered.connect(self.onManualActionTriggered)
         self.AboutAction.triggered.connect(self.onAboutActionTriggered)
         self.SettingsAction.triggered.connect(self.onSettingsActionTriggered)
+        if hasattr(self, 'BulletinAction'):
+            self.BulletinAction.triggered.connect(self.onBulletinActionTriggered)
 
         # initialize timer task widget, but not show it
         try:
@@ -131,12 +143,14 @@ class ALMainWindow(MsgBase, QMainWindow, Ui_ALMainWindow):
         self.TrayMenu = QMenu()
         self.TrayMenu.addAction("显示主窗口", self.showNormal)
         self.TrayMenu.addAction("显示定时窗口", self.onTimerTaskManageWidgetButtonClicked)
+        self.TrayMenu.addAction("公告栏", self.onBulletinActionTriggered)
         self.TrayMenu.addAction("最小化到托盘", self.hideToTray)
         self.TrayMenu.addSeparator()
         self.TrayMenu.addAction("退出", self.close)
         self.TrayIcon.setContextMenu(self.TrayMenu)
 
         self.TrayIcon.activated.connect(self.onTrayIconActivated)
+        self.TrayIcon.messageClicked.connect(self.onBulletinActionTriggered)
         self.TrayIcon.show()
 
     def hideToTray(
@@ -170,6 +184,10 @@ class ALMainWindow(MsgBase, QMainWindow, Ui_ALMainWindow):
         self.SendButton.clicked.connect(self.onSendButtonClicked)
         self.MessageEdit.returnPressed.connect(self.onSendButtonClicked)
 
+        self.__bulletin_poller.newBulletinsDetected.connect(
+            self._onBulletinPollerNewBulletins
+        )
+
     def closeEvent(
         self,
         event: QCloseEvent
@@ -195,6 +213,11 @@ class ALMainWindow(MsgBase, QMainWindow, Ui_ALMainWindow):
         if self.__alSettingsWidget:
             self.__alSettingsWidget.close()
             # the settings widget is already deleted in the 'self.onSettingsWidgetClosed'
+        if self.__alBulletinDialog:
+            self.__alBulletinDialog.close()
+            # the bulletin dialog is already deleted in the 'self.onBulletinDialogClosed'
+        if self.__bulletin_poller:
+            self.__bulletin_poller.stop()
         self._showLog("主窗口关闭")
         QMainWindow.closeEvent(self, event)
 
@@ -318,6 +341,46 @@ class ALMainWindow(MsgBase, QMainWindow, Ui_ALMainWindow):
             self.__alSettingsWidget = None
         self.SettingsAction.setEnabled(True)
 
+    @Slot()
+    def onBulletinActionTriggered(
+        self
+    ):
+
+        self.__bulletin_poller.setDialogOpen(True)
+        if self.__alBulletinDialog is None:
+            self.__alBulletinDialog = ALBulletinDialog(self)
+            self.__alBulletinDialog.finished.connect(self.onBulletinDialogClosed)
+        self.__alBulletinDialog.show()
+        self.__alBulletinDialog.raise_()
+        self.__alBulletinDialog.activateWindow()
+        self._showLog("打开公告栏窗口")
+
+    @Slot()
+    def onBulletinDialogClosed(
+        self
+    ):
+
+        if self.__alBulletinDialog:
+            self.__alBulletinDialog.finished.disconnect(self.onBulletinDialogClosed)
+            self.__alBulletinDialog.deleteLater()
+            self.__alBulletinDialog = None
+        self.__bulletin_poller.setDialogOpen(False)
+
+    @Slot(int)
+    def _onBulletinPollerNewBulletins(
+        self,
+        count: int
+    ):
+
+        if not hasattr(self, 'TrayIcon'):
+            return
+        self.TrayIcon.showMessage(
+            "公告栏 - AutoLibrary",
+            f"有 {count} 条新公告，点击查看详情。",
+            QSystemTrayIcon.MessageIcon.Information,
+            3000
+        )
+
     @Slot()
     def onSettingsActionTriggered(
         self

src/gui/ALSettingsWidget.py

@@ -9,12 +9,15 @@ See the LICENSE file for details.
 """
 import os
 import sys
+import time
 
+import requests
 import qtawesome as qta
 
 from PySide6.QtCore import (
     QProcess,
     Qt,
+    QTimer,
     Signal,
     Slot
 )
@@ -30,6 +33,7 @@ from PySide6.QtWidgets import (
 )
 
 import managers.config.ConfigManager as ConfigManager
+from managers.bulletin.BulletinManager import instance as bulletinInstance
 from managers.log.LogManager import instance as logInstance
 from managers.theme.ThemeManager import(
     getActiveStyle,
@@ -96,6 +100,9 @@ class ALSettingsWidget(CenterOnParentMixin, QWidget, Ui_ALSettingsWidget):
         self.__original_theme: str = ""
         self.__original_custom_theme: str = ""
         self.__original_style: str = ""
+        self.__original_bulletin_url: str = ""
+        self.__original_bulletin_auto_fetch: bool = False
+        self.__original_bulletin_sync_interval: int = 10
 
         self.setupUi(self)
         self.modifyUi()
@@ -130,6 +137,7 @@ class ALSettingsWidget(CenterOnParentMixin, QWidget, Ui_ALSettingsWidget):
             "padding: 5px;"
         )
         self.NavigationList.setCurrentRow(0)
+        self.NavigationList.currentRowChanged.connect(self.PageStack.setCurrentIndex)
         self.populateStyles()
         self.populateCustomThemes()
 
@@ -139,9 +147,12 @@ class ALSettingsWidget(CenterOnParentMixin, QWidget, Ui_ALSettingsWidget):
 
         app : QApplication | None = QApplication.instance()
         color = app.palette().color(app.palette().ColorRole.WindowText).name()
-        item = self.NavigationList.item(0)
-        if item:
-            item.setIcon(qta.icon("fa6s.palette", color=color))
+        item0 = self.NavigationList.item(0)
+        if item0:
+            item0.setIcon(qta.icon("fa6s.palette", color=color))
+        item1 = self.NavigationList.item(1)
+        if item1:
+            item1.setIcon(qta.icon("fa6s.bullhorn", color=color))
 
     def populateStyles(
         self
@@ -176,6 +187,7 @@ class ALSettingsWidget(CenterOnParentMixin, QWidget, Ui_ALSettingsWidget):
         self.RemoveCustomThemeButton.clicked.connect(self.onRemoveCustomThemeButtonClicked)
         self.CustomThemeComboBox.currentIndexChanged.connect(self.onCustomThemeComboBoxChanged)
         self.ResetCustomThemeButton.clicked.connect(self.onResetCustomThemeButtonClicked)
+        self.BulletinTestButton.clicked.connect(self.onBulletinTestButtonClicked)
         self.CancelButton.clicked.connect(self.onCancelButtonClicked)
         self.ApplyButton.clicked.connect(self.onApplyButtonClicked)
         self.ConfirmButton.clicked.connect(self.onConfirmButtonClicked)
@@ -207,6 +219,14 @@ class ALSettingsWidget(CenterOnParentMixin, QWidget, Ui_ALSettingsWidget):
         self.updateCustomThemeInfo()
         self.updateCustomThemeStatus()
 
+        bulletin_mgr = bulletinInstance()
+        self.__original_bulletin_url = bulletin_mgr.serverUrl()
+        self.__original_bulletin_auto_fetch = bulletin_mgr.autoFetch()
+        self.__original_bulletin_sync_interval = bulletin_mgr.syncInterval()
+        self.BulletinServerUrlEdit.setText(self.__original_bulletin_url)
+        self.BulletinAutoFetchCheck.setChecked(self.__original_bulletin_auto_fetch)
+        self.BulletinSyncIntervalSpin.setValue(self.__original_bulletin_sync_interval)
+
     def updateCustomThemeInfo(
         self
     ):
@@ -270,6 +290,29 @@ class ALSettingsWidget(CenterOnParentMixin, QWidget, Ui_ALSettingsWidget):
             custom_theme = ""
         return theme, style, custom_theme
 
+    def clearBulletinTestStatus(
+        self
+    ):
+
+        self.BulletinTestStatusLabel.setText("")
+        self.BulletinTestStatusLabel.setStyleSheet("")
+
+    def saveBulletinSettings(
+        self
+    ):
+
+        url = self.BulletinServerUrlEdit.text().strip()
+        auto_fetch = self.BulletinAutoFetchCheck.isChecked()
+        sync_interval = self.BulletinSyncIntervalSpin.value()
+        if sync_interval < 1:
+            sync_interval = 5
+        self.__cfg_mgr.set(CfgKey.GLOBAL.BULLETIN.SERVER_URL, url)
+        self.__cfg_mgr.set(CfgKey.GLOBAL.BULLETIN.AUTO_FETCH, auto_fetch)
+        self.__cfg_mgr.set(CfgKey.GLOBAL.BULLETIN.SYNC_INTERVAL, sync_interval)
+        self.__original_bulletin_url = url
+        self.__original_bulletin_auto_fetch = auto_fetch
+        self.__original_bulletin_sync_interval = sync_interval
+
     def saveAndApply(
         self
     ):
@@ -281,8 +324,6 @@ class ALSettingsWidget(CenterOnParentMixin, QWidget, Ui_ALSettingsWidget):
         if not _applyCustomTheme(custom_theme, theme):
             self.__cfg_mgr.set(CfgKey.GLOBAL.APPEARANCE.CUSTOM_THEME, "")
         self.syncRadioFromNeedTheme(custom_theme)
-        # Re-read theme after syncRadioFromNeedTheme — the radio may have
-        # changed to match the custom theme's need_theme
         theme, _, _ = self.collectSettings()
         self.__cfg_mgr.set(CfgKey.GLOBAL.APPEARANCE.THEME, theme)
         self.setNavigationIcons()
@@ -292,6 +333,8 @@ class ALSettingsWidget(CenterOnParentMixin, QWidget, Ui_ALSettingsWidget):
         self.__original_custom_theme = custom_theme if custom_theme else ""
         self.__original_style = getActiveStyle()
 
+        self.saveBulletinSettings()
+
     def maybeRestart(
         self
     ) -> bool:
@@ -380,7 +423,6 @@ class ALSettingsWidget(CenterOnParentMixin, QWidget, Ui_ALSettingsWidget):
     ):
 
         self.updateCustomThemeInfo()
-        # no status update, because custom theme is not applied yet.
 
     @Slot()
     def onResetCustomThemeButtonClicked(
@@ -406,6 +448,43 @@ class ALSettingsWidget(CenterOnParentMixin, QWidget, Ui_ALSettingsWidget):
         self.updateCustomThemeInfo()
         self.updateCustomThemeStatus()
 
+    @Slot()
+    def onBulletinTestButtonClicked(
+        self
+    ):
+
+        url = self.BulletinServerUrlEdit.text().strip()
+        if not url:
+            self.BulletinTestStatusLabel.setText("请先输入服务器地址。")
+            self.BulletinTestStatusLabel.setStyleSheet("color: red;")
+            return
+        self.BulletinTestButton.setEnabled(False)
+        self.BulletinTestStatusLabel.setText("正在测试连接...")
+        self.BulletinTestStatusLabel.setStyleSheet("")
+        try:
+            api_url = url.rstrip("/") + "/bulletins"
+            t0 = time.monotonic()
+            response = requests.get(api_url, timeout=5)
+            elapsed_ms = (time.monotonic() - t0) * 1000
+            response.raise_for_status()
+            data = response.json()
+            if data.get("code") == 200:
+                self.BulletinTestStatusLabel.setText(
+                    f"连接成功！响应延迟 {elapsed_ms:.0f} ms"
+                )
+                self.BulletinTestStatusLabel.setStyleSheet("color: green;")
+            else:
+                self.BulletinTestStatusLabel.setText(
+                    f"服务器返回异常: [{data.get('code', '?')}] {data.get('msg', '未知错误')}"
+                )
+                self.BulletinTestStatusLabel.setStyleSheet("color: red;")
+        except Exception as e:
+            self.BulletinTestStatusLabel.setText(f"连接失败：{e}")
+            self.BulletinTestStatusLabel.setStyleSheet("color: red;")
+        finally:
+            self.BulletinTestButton.setEnabled(True)
+            QTimer.singleShot(3000, self.clearBulletinTestStatus)
+
     @Slot()
     def onCancelButtonClicked(
         self
@@ -429,5 +508,5 @@ class ALSettingsWidget(CenterOnParentMixin, QWidget, Ui_ALSettingsWidget):
         self
     ):
 
-        self.onApplyButtonClicked() # virtually call apply button clicked
+        self.onApplyButtonClicked()
         self.close()

src/gui/resources/ui/ALBulletinDialog.ui

@@ -0,0 +1,385 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>ALBulletinDialog</class>
+ <widget class="QDialog" name="ALBulletinDialog">
+  <property name="windowModality">
+   <enum>Qt::WindowModality::NonModal</enum>
+  </property>
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>640</width>
+    <height>450</height>
+   </rect>
+  </property>
+  <property name="minimumSize">
+   <size>
+    <width>400</width>
+    <height>450</height>
+   </size>
+  </property>
+  <property name="maximumSize">
+   <size>
+    <width>800</width>
+    <height>450</height>
+   </size>
+  </property>
+  <property name="windowTitle">
+   <string>公告栏 - AutoLibrary</string>
+  </property>
+  <layout class="QVBoxLayout" name="ALBulletinDialogLayout">
+   <property name="spacing">
+    <number>5</number>
+   </property>
+   <property name="leftMargin">
+    <number>5</number>
+   </property>
+   <property name="topMargin">
+    <number>5</number>
+   </property>
+   <property name="rightMargin">
+    <number>5</number>
+   </property>
+   <property name="bottomMargin">
+    <number>5</number>
+   </property>
+   <item>
+    <layout class="QHBoxLayout" name="SyncLayout">
+     <property name="spacing">
+      <number>10</number>
+     </property>
+     <item>
+      <widget class="QPushButton" name="SyncButton">
+       <property name="enabled">
+        <bool>true</bool>
+       </property>
+       <property name="minimumSize">
+        <size>
+         <width>80</width>
+         <height>25</height>
+        </size>
+       </property>
+       <property name="maximumSize">
+        <size>
+         <width>80</width>
+         <height>25</height>
+        </size>
+       </property>
+       <property name="focusPolicy">
+        <enum>Qt::FocusPolicy::NoFocus</enum>
+       </property>
+       <property name="text">
+        <string>同步</string>
+       </property>
+       <property name="autoDefault">
+        <bool>false</bool>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QLabel" name="SyncStatusPlaceholder">
+       <property name="minimumSize">
+        <size>
+         <width>30</width>
+         <height>30</height>
+        </size>
+       </property>
+       <property name="maximumSize">
+        <size>
+         <width>30</width>
+         <height>30</height>
+        </size>
+       </property>
+       <property name="text">
+        <string/>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QLabel" name="SyncStatusDetailLabel">
+       <property name="minimumSize">
+        <size>
+         <width>80</width>
+         <height>25</height>
+        </size>
+       </property>
+       <property name="maximumSize">
+        <size>
+         <width>200</width>
+         <height>25</height>
+        </size>
+       </property>
+       <property name="text">
+        <string/>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QFrame" name="SyncSpaceFrame">
+       <property name="minimumSize">
+        <size>
+         <width>0</width>
+         <height>25</height>
+        </size>
+       </property>
+       <property name="maximumSize">
+        <size>
+         <width>800</width>
+         <height>25</height>
+        </size>
+       </property>
+       <property name="frameShape">
+        <enum>QFrame::Shape::NoFrame</enum>
+       </property>
+       <property name="frameShadow">
+        <enum>QFrame::Shadow::Plain</enum>
+       </property>
+       <property name="lineWidth">
+        <number>0</number>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QLabel" name="LastSyncTimeLabel">
+       <property name="minimumSize">
+        <size>
+         <width>50</width>
+         <height>25</height>
+        </size>
+       </property>
+       <property name="maximumSize">
+        <size>
+         <width>50</width>
+         <height>25</height>
+        </size>
+       </property>
+       <property name="text">
+        <string>上次同步：</string>
+       </property>
+      </widget>
+     </item>
+     <item>
+      <widget class="QDateTimeEdit" name="LastSyncDateTimeEdit">
+       <property name="minimumSize">
+        <size>
+         <width>130</width>
+         <height>25</height>
+        </size>
+       </property>
+       <property name="maximumSize">
+        <size>
+         <width>130</width>
+         <height>25</height>
+        </size>
+       </property>
+       <property name="frame">
+        <bool>false</bool>
+       </property>
+       <property name="readOnly">
+        <bool>true</bool>
+       </property>
+       <property name="buttonSymbols">
+        <enum>QAbstractSpinBox::ButtonSymbols::NoButtons</enum>
+       </property>
+       <property name="keyboardTracking">
+        <bool>false</bool>
+       </property>
+       <property name="displayFormat">
+        <string>yyyy/MM/dd HH:mm:ss</string>
+       </property>
+       <property name="timeSpec">
+        <enum>Qt::TimeSpec::LocalTime</enum>
+       </property>
+      </widget>
+     </item>
+    </layout>
+   </item>
+   <item>
+    <widget class="QSplitter" name="BulletinSplitter">
+     <property name="orientation">
+      <enum>Qt::Orientation::Horizontal</enum>
+     </property>
+     <widget class="QFrame" name="LeftFrame">
+      <property name="frameShape">
+       <enum>QFrame::Shape::NoFrame</enum>
+      </property>
+      <property name="frameShadow">
+       <enum>QFrame::Shadow::Plain</enum>
+      </property>
+      <layout class="QVBoxLayout" name="LeftFrameLayout">
+       <property name="spacing">
+        <number>5</number>
+       </property>
+       <property name="leftMargin">
+        <number>0</number>
+       </property>
+       <property name="topMargin">
+        <number>0</number>
+       </property>
+       <property name="rightMargin">
+        <number>0</number>
+       </property>
+       <property name="bottomMargin">
+        <number>0</number>
+       </property>
+       <item>
+        <widget class="QListWidget" name="BulletinListWidget">
+         <property name="frameShape">
+          <enum>QFrame::Shape::NoFrame</enum>
+         </property>
+         <property name="editTriggers">
+          <set>QAbstractItemView::EditTrigger::NoEditTriggers</set>
+         </property>
+         <property name="selectionMode">
+          <enum>QAbstractItemView::SelectionMode::SingleSelection</enum>
+         </property>
+        </widget>
+       </item>
+      </layout>
+     </widget>
+     <widget class="QFrame" name="RightFrame">
+      <property name="frameShape">
+       <enum>QFrame::Shape::NoFrame</enum>
+      </property>
+      <property name="frameShadow">
+       <enum>QFrame::Shadow::Plain</enum>
+      </property>
+      <layout class="QVBoxLayout" name="RightFrameLayout">
+       <property name="spacing">
+        <number>5</number>
+       </property>
+       <property name="leftMargin">
+        <number>0</number>
+       </property>
+       <property name="topMargin">
+        <number>0</number>
+       </property>
+       <property name="rightMargin">
+        <number>0</number>
+       </property>
+       <property name="bottomMargin">
+        <number>0</number>
+       </property>
+       <item>
+        <widget class="QLabel" name="BulletinTitleLabel">
+         <property name="text">
+          <string/>
+         </property>
+        </widget>
+       </item>
+       <item>
+        <layout class="QHBoxLayout" name="BulletinInfoLayout">
+         <property name="spacing">
+          <number>5</number>
+         </property>
+         <item>
+          <widget class="QLabel" name="BulletinDateLabel">
+           <property name="text">
+            <string/>
+           </property>
+          </widget>
+         </item>
+         <item>
+          <widget class="QLabel" name="BulletinAuthorLabel">
+           <property name="text">
+            <string/>
+           </property>
+          </widget>
+         </item>
+         <item>
+          <widget class="QLabel" name="BulletinIsEditedLabel">
+           <property name="text">
+            <string>(已编辑)</string>
+           </property>
+          </widget>
+         </item>
+         <item>
+          <spacer name="BulletinInfoSpacer">
+           <property name="orientation">
+            <enum>Qt::Orientation::Horizontal</enum>
+           </property>
+           <property name="sizeHint" stdset="0">
+            <size>
+             <width>40</width>
+             <height>20</height>
+            </size>
+           </property>
+          </spacer>
+         </item>
+        </layout>
+       </item>
+       <item>
+        <widget class="QTextBrowser" name="BulletinContentTextBrowser">
+         <property name="readOnly">
+          <bool>true</bool>
+         </property>
+         <property name="openExternalLinks">
+          <bool>true</bool>
+         </property>
+        </widget>
+       </item>
+      </layout>
+     </widget>
+    </widget>
+   </item>
+   <item>
+    <widget class="QDialogButtonBox" name="BulletinDialogButtonBox">
+     <property name="minimumSize">
+      <size>
+       <width>0</width>
+       <height>25</height>
+      </size>
+     </property>
+     <property name="maximumSize">
+      <size>
+       <width>16777215</width>
+       <height>25</height>
+      </size>
+     </property>
+     <property name="orientation">
+      <enum>Qt::Orientation::Horizontal</enum>
+     </property>
+     <property name="standardButtons">
+      <set>QDialogButtonBox::StandardButton::Cancel|QDialogButtonBox::StandardButton::Ok</set>
+     </property>
+    </widget>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections>
+  <connection>
+   <sender>BulletinDialogButtonBox</sender>
+   <signal>accepted()</signal>
+   <receiver>ALBulletinDialog</receiver>
+   <slot>accept()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>248</x>
+     <y>254</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>157</x>
+     <y>274</y>
+    </hint>
+   </hints>
+  </connection>
+  <connection>
+   <sender>BulletinDialogButtonBox</sender>
+   <signal>rejected()</signal>
+   <receiver>ALBulletinDialog</receiver>
+   <slot>reject()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>316</x>
+     <y>260</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>286</x>
+     <y>274</y>
+    </hint>
+   </hints>
+  </connection>
+ </connections>
+</ui>

src/gui/resources/ui/ALSettingsWidget.ui

@@ -101,9 +101,18 @@
          <iconset theme="preferences-desktop-color"/>
         </property>
        </item>
+       <item>
+        <property name="text">
+         <string>公告</string>
+        </property>
+        <property name="icon">
+         <iconset theme="preferences-desktop-color"/>
+        </property>
+       </item>
       </widget>
      </item>
      <item>
+      <widget class="QStackedWidget" name="PageStack">
        <widget class="QScrollArea" name="AppearanceScrollArea">
         <property name="frameShape">
          <enum>QFrame::Shape::NoFrame</enum>
@@ -115,7 +124,7 @@
          <property name="geometry">
           <rect>
            <x>0</x>
-          <y>-51</y>
+           <y>0</y>
            <width>397</width>
            <height>434</height>
           </rect>
@@ -437,6 +446,212 @@
          </layout>
         </widget>
        </widget>
+       <widget class="QScrollArea" name="BulletinScrollArea">
+        <property name="frameShape">
+         <enum>QFrame::Shape::NoFrame</enum>
+        </property>
+        <property name="widgetResizable">
+         <bool>true</bool>
+        </property>
+        <widget class="QWidget" name="BulletinPageContent">
+         <property name="geometry">
+          <rect>
+           <x>0</x>
+           <y>0</y>
+           <width>397</width>
+           <height>434</height>
+          </rect>
+         </property>
+         <layout class="QVBoxLayout" name="BulletinPageLayout">
+          <property name="spacing">
+           <number>5</number>
+          </property>
+          <property name="leftMargin">
+           <number>3</number>
+          </property>
+          <property name="topMargin">
+           <number>3</number>
+          </property>
+          <property name="rightMargin">
+           <number>3</number>
+          </property>
+          <property name="bottomMargin">
+           <number>3</number>
+          </property>
+          <item>
+           <widget class="QGroupBox" name="BulletinGroupBox">
+            <property name="title">
+             <string>公告设置</string>
+            </property>
+            <layout class="QVBoxLayout" name="BulletinGroupBoxLayout">
+             <property name="spacing">
+              <number>5</number>
+             </property>
+             <property name="leftMargin">
+              <number>3</number>
+             </property>
+             <property name="topMargin">
+              <number>3</number>
+             </property>
+             <property name="rightMargin">
+              <number>3</number>
+             </property>
+             <property name="bottomMargin">
+              <number>3</number>
+             </property>
+             <item>
+              <layout class="QHBoxLayout" name="BulletinServerUrlLayout">
+               <property name="spacing">
+                <number>5</number>
+               </property>
+               <item>
+                <widget class="QLabel" name="BulletinServerUrlLabel">
+                 <property name="minimumSize">
+                  <size>
+                   <width>100</width>
+                   <height>25</height>
+                  </size>
+                 </property>
+                 <property name="maximumSize">
+                  <size>
+                   <width>100</width>
+                   <height>25</height>
+                  </size>
+                 </property>
+                 <property name="text">
+                  <string>服务器地址：</string>
+                 </property>
+                </widget>
+               </item>
+               <item>
+                <widget class="QLineEdit" name="BulletinServerUrlEdit">
+                 <property name="minimumSize">
+                  <size>
+                   <width>200</width>
+                   <height>25</height>
+                  </size>
+                 </property>
+                 <property name="placeholderText">
+                  <string>https://api.autolibrary.kenanzhu.com</string>
+                 </property>
+                </widget>
+               </item>
+              </layout>
+             </item>
+             <item>
+              <widget class="QCheckBox" name="BulletinAutoFetchCheck">
+               <property name="text">
+                <string>软件启动时自动获取公告</string>
+               </property>
+              </widget>
+             </item>
+             <item>
+              <layout class="QHBoxLayout" name="BulletinSyncIntervalLayout">
+               <property name="spacing">
+                <number>5</number>
+               </property>
+               <item>
+                <widget class="QLabel" name="BulletinSyncIntervalLabel">
+                 <property name="minimumSize">
+                  <size>
+                   <width>100</width>
+                   <height>25</height>
+                  </size>
+                 </property>
+                 <property name="maximumSize">
+                  <size>
+                   <width>100</width>
+                   <height>25</height>
+                  </size>
+                 </property>
+                 <property name="text">
+                  <string>自动同步间隔：</string>
+                 </property>
+                </widget>
+               </item>
+               <item>
+                <widget class="QSpinBox" name="BulletinSyncIntervalSpin">
+                 <property name="minimumSize">
+                  <size>
+                   <width>80</width>
+                   <height>25</height>
+                  </size>
+                 </property>
+                 <property name="minimum">
+                  <number>1</number>
+                 </property>
+                 <property name="maximum">
+                  <number>1440</number>
+                 </property>
+                 <property name="suffix">
+                  <string> 分钟</string>
+                 </property>
+                </widget>
+               </item>
+               <item>
+                <spacer name="BulletinSyncIntervalSpacer">
+                 <property name="orientation">
+                  <enum>Qt::Orientation::Horizontal</enum>
+                 </property>
+                 <property name="sizeHint" stdset="0">
+                  <size>
+                   <width>40</width>
+                   <height>20</height>
+                  </size>
+                 </property>
+                </spacer>
+               </item>
+              </layout>
+             </item>
+             <item>
+              <widget class="QPushButton" name="BulletinTestButton">
+               <property name="minimumSize">
+                <size>
+                 <width>100</width>
+                 <height>25</height>
+                </size>
+               </property>
+               <property name="maximumSize">
+                <size>
+                 <width>100</width>
+                 <height>25</height>
+                </size>
+               </property>
+               <property name="text">
+                <string>测试连接</string>
+               </property>
+              </widget>
+             </item>
+             <item>
+              <widget class="QLabel" name="BulletinTestStatusLabel">
+               <property name="text">
+                <string/>
+               </property>
+               <property name="wordWrap">
+                <bool>true</bool>
+               </property>
+              </widget>
+             </item>
+            </layout>
+           </widget>
+          </item>
+          <item>
+           <spacer name="BulletinPageSpacer">
+            <property name="orientation">
+             <enum>Qt::Orientation::Vertical</enum>
+            </property>
+            <property name="sizeHint" stdset="0">
+             <size>
+              <width>20</width>
+              <height>40</height>
+             </size>
+            </property>
+           </spacer>
+          </item>
+         </layout>
+        </widget>
+       </widget>
+      </widget>
      </item>
     </layout>
    </item>

src/interfaces/ConfigProvider.py

@@ -72,6 +72,12 @@ class CfgKey:
             STYLE = ConfigPath(ConfigType.GLOBAL, "appearance.style")
             CUSTOM_THEME = ConfigPath(ConfigType.GLOBAL, "appearance.custom_theme")
 
+        class BULLETIN:
+            ROOT = ConfigPath(ConfigType.GLOBAL, "bulletin")
+            AUTO_FETCH = ConfigPath(ConfigType.GLOBAL, "bulletin.auto_fetch")
+            SERVER_URL = ConfigPath(ConfigType.GLOBAL, "bulletin.server_url")
+            SYNC_INTERVAL = ConfigPath(ConfigType.GLOBAL, "bulletin.sync_interval")
+
     class TIMERTASK:
         ROOT = ConfigPath(ConfigType.TIMERTASK, "")
         TIMER_TASKS = ConfigPath(ConfigType.TIMERTASK, "timer_tasks")

src/managers/bulletin/BulletinManager.py

@@ -0,0 +1,292 @@
+# -*- coding: utf-8 -*-
+"""
+Copyright (c) 2026 KenanZhu.
+All rights reserved.
+
+This software is provided "as is", without any warranty of any kind.
+You may use, modify, and distribute this file under the terms of the MIT License.
+See the LICENSE file for details.
+"""
+import threading
+
+from datetime import datetime, timedelta
+from typing import Optional
+
+from interfaces.ConfigProvider import (
+    CfgKey,
+    ConfigProvider
+)
+from managers.config.ConfigManager import instance as configInstance
+
+
+class BulletinManager:
+    """
+        Bulletin Manager Singleton Class
+
+        Manages bulletin data persistence via ConfigManager and provides
+        merge, read-status and sync-parameter logic. The HTTP fetch and
+        UI concerns are handled by the GUI layer.
+    """
+
+    def __init__(
+        self
+    ):
+
+        self.__lock = threading.Lock()
+        self.__cfg: ConfigProvider = configInstance()
+
+    def bulletins(
+        self
+    ) -> list[dict]:
+        """
+            Get cached bulletins.
+
+            Returns:
+                list[dict]: Cached bulletin list.
+        """
+
+        return self.__cfg.get(CfgKey.BULLETIN.BULLETIN, [])
+
+    def setBulletins(
+        self,
+        bulletins: list[dict]
+    ):
+        """
+            Replace the bulletin cache.
+
+            Args:
+                bulletins (list[dict]): Bulletin list to store.
+        """
+
+        self.__cfg.set(CfgKey.BULLETIN.BULLETIN, bulletins)
+
+    def lastSyncTime(
+        self
+    ) -> Optional[str]:
+        """
+            Get last sync time string.
+
+            Returns:
+                Optional[str]: ISO-format last sync time, or None.
+        """
+
+        return self.__cfg.get(CfgKey.BULLETIN.LAST_SYNC_TIME, None)
+
+    def setLastSyncTime(
+        self,
+        value: Optional[str]
+    ):
+        """
+            Set last sync time.
+
+            Args:
+                value (Optional[str]): ISO-format datetime string.
+        """
+
+        self.__cfg.set(CfgKey.BULLETIN.LAST_SYNC_TIME, value)
+
+    def autoFetch(
+        self
+    ) -> bool:
+        """
+            Get auto-fetch-on-startup setting.
+
+            Returns:
+                bool: Whether to fetch bulletins on application startup.
+        """
+
+        return self.__cfg.get(CfgKey.GLOBAL.BULLETIN.AUTO_FETCH, False)
+
+    def serverUrl(
+        self
+    ) -> str:
+        """
+            Get bulletin server URL.
+
+            Returns:
+                str: Server base URL.
+        """
+
+        return self.__cfg.get(
+            CfgKey.GLOBAL.BULLETIN.SERVER_URL,
+            "https://api.autolibrary.kenanzhu.com"
+        )
+
+    def syncInterval(
+        self
+    ) -> int:
+        """
+            Get auto-sync interval in minutes.
+
+            Values below 1 are clamped to 5 minutes.
+
+            Returns:
+                int: Sync interval (minutes), minimum 1.
+        """
+
+        interval = self.__cfg.get(CfgKey.GLOBAL.BULLETIN.SYNC_INTERVAL, 10)
+        if interval < 1:
+            return 5
+        return interval
+
+    def apiUrl(
+        self
+    ) -> str:
+        """
+            Build the full bulletin API endpoint URL.
+
+            Returns:
+                str: Full API URL (base + /bulletins).
+        """
+
+        base = self.serverUrl().rstrip("/")
+        return f"{base}/bulletins"
+
+    def isFirstSync(
+        self
+    ) -> bool:
+        """
+            Check whether this is the first sync.
+
+            Returns:
+                bool: True if no cached bulletins or no last sync time.
+        """
+
+        last = self.lastSyncTime()
+        bulletins = self.bulletins()
+        return last is None or not bulletins
+
+    def shouldFullSync(
+        self
+    ) -> bool:
+        """
+            Check whether a full sync is needed.
+
+            A full sync is triggered when the last sync time is more than
+            one hour ago.
+
+            Returns:
+                bool: True if a full sync should be performed.
+        """
+
+        last = self.lastSyncTime()
+        if last is None:
+            return True
+        try:
+            last_dt = datetime.fromisoformat(last)
+            return (datetime.now().astimezone() - last_dt) > timedelta(hours=1)
+        except (ValueError, TypeError):
+            return True
+
+    def getSyncDateTimeAndRange(
+        self
+    ) -> dict:
+        """
+            Calculate the date / time / range_hour query parameters.
+
+            Returns:
+                dict: Keys "date", "time", "range_hour" for the API request.
+        """
+
+        if self.isFirstSync():
+            start_date = datetime.now() - timedelta(days=7)
+            range_hour = str(24 * (7 + 1))
+        elif self.shouldFullSync():
+            bulletins = self.bulletins()
+            earliest = min(bulletins, key=lambda x: x.get("dateTime", ""))
+            start_date = datetime.fromisoformat(earliest["dateTime"])
+            diff = datetime.now().astimezone() - start_date
+            range_hour = str(int(diff.total_seconds() / 3600) + 1)
+        else:
+            bulletins = self.bulletins()
+            latest = max(bulletins, key=lambda x: x.get("dateTime", ""))
+            start_date = datetime.fromisoformat(latest["dateTime"])
+            diff = datetime.now().astimezone() - start_date
+            range_hour = str(int(diff.total_seconds() / 3600) + 1)
+        return {
+            "date": start_date.strftime("%Y-%m-%d"),
+            "time": start_date.strftime("%H:%M:%S"),
+            "range_hour": range_hour,
+        }
+
+    def updateAndMergeBulletins(
+        self,
+        new_bulletins: list[dict],
+        delete_ids: list[str]
+    ) -> list[dict]:
+        """
+            Merge incoming bulletins into the cache.
+
+            New bulletins are added with isNew=True. Existing bulletins
+            keep their current isNew state. Entries listed in delete_ids
+            are removed.
+
+            Args:
+                new_bulletins (list[dict]): Incoming bulletin list.
+                delete_ids (list[str]): IDs to remove.
+
+            Returns:
+                list[dict]: Merged bulletin list sorted by id.
+        """
+
+        with self.__lock:
+            delete_set = set(delete_ids)
+            bulletins_dict = {b["id"]: b for b in self.bulletins()}
+            for bulletin in new_bulletins:
+                bid = bulletin["id"]
+                if bid in delete_set:
+                    bulletins_dict.pop(bid, None)
+                    continue
+                if bid not in bulletins_dict:
+                    bulletin["isNew"] = True
+                else:
+                    bulletin["isNew"] = bulletins_dict[bid].get("isNew", True)
+                bulletins_dict[bid] = bulletin
+            for bid in delete_set:
+                bulletins_dict.pop(bid, None)
+            result = list(bulletins_dict.values())
+            result.sort(key=lambda x: int(x["id"]))
+            self.setBulletins(result)
+            return result
+
+    def markBulletinAsRead(
+        self,
+        bulletin_id: str
+    ):
+        """
+            Mark a bulletin as read by its id.
+
+            Args:
+                bulletin_id (str): The bulletin id.
+        """
+
+        with self.__lock:
+            bulletins = self.bulletins()
+            for b in bulletins:
+                if b["id"] == bulletin_id:
+                    b["isNew"] = False
+                    self.setBulletins(bulletins)
+                    break
+
+
+# BulletinManager singleton instance.
+_bulletin_manager_instance = None
+
+# Singleton instance lock.
+_instance_lock = threading.Lock()
+
+
+def instance(
+) -> BulletinManager:
+    """
+        Get the BulletinManager singleton instance.
+
+        Returns:
+            BulletinManager: The singleton BulletinManager instance.
+    """
+
+    global _bulletin_manager_instance
+    with _instance_lock:
+        if _bulletin_manager_instance is None:
+            _bulletin_manager_instance = BulletinManager()
+    return _bulletin_manager_instance

src/managers/bulletin/__init__.py

@@ -0,0 +1,9 @@
+# -*- coding: utf-8 -*-
+"""
+Copyright (c) 2026 KenanZhu.
+All rights reserved.
+
+This software is provided "as is", without any warranty of any kind.
+You may use, modify, and distribute this file under the terms of the MIT License.
+See the LICENSE file for details.
+"""

src/managers/config/ConfigManager.py

@@ -59,6 +59,11 @@ class ConfigTemplate:
                         "theme": "system",
                         "style": "Fusion",
                         "custom_theme": ""
+                    },
+                    "bulletin": {
+                        "auto_fetch": False,
+                        "server_url": "https://api.autolibrary.kenanzhu.com",
+                        "sync_interval": 10
                     }
                 }
             case ConfigType.BULLETIN: