修复若干bug

db/database.py

@@ -228,3 +228,18 @@ def reorder_items(group_id, id_list):
         conn.execute("UPDATE items SET position=? WHERE id=?", (pos, iid))
     conn.commit()
     conn.close()
+
+
+def reset_groups_and_items(recreate_default_group: bool = True):
+    """
+    清空所有分组与程序（items）。
+    - 为避免外键级联受 SQLite 外键开关影响，这里显式先删 items 再删 groups。
+    - 可选地重新创建默认分组「常用程序」，保证界面至少有一个组可操作。
+    """
+    conn = get_conn()
+    conn.execute("DELETE FROM items")
+    conn.execute("DELETE FROM groups")
+    if recreate_default_group:
+        conn.execute("INSERT INTO groups (name, position) VALUES ('常用程序', 0)")
+    conn.commit()
+    conn.close()

ui/dock.py

@@ -858,6 +858,16 @@ class PanelWindow(QWidget):
                 )
             self.groups_layout.insertWidget(self.groups_layout.count() - 1, gw)
 
+    def reset_groups_and_items(self):
+        """清空所有分组与程序，并刷新界面。"""
+        database.reset_groups_and_items(recreate_default_group=True)
+        # 清空搜索关键字，确保刷新后可见全部内容
+        try:
+            self.search_box.setText("")
+        except Exception:
+            pass
+        self.refresh_groups()
+
     def _add_group(self):
         name, ok = dialog_style.get_text(self, "新建分组", "分组名称:")
         if ok and name.strip():
@@ -909,12 +919,13 @@ class PanelWindow(QWidget):
     def _collapse_body(self):
         """收缩：隐藏内容区，窗口缩到只剩标题栏高度"""
         self._body.hide()
+        self.weather_bar.hide()
         # 记录当前高度，展开时恢复
         self._expanded_height = self.height()
         title_h = (
             self.container.layout().contentsMargins().top()
             + self.container.layout().contentsMargins().bottom()
-            + 46
+            + self._title_bar.sizeHint().height()
         )
         self.setFixedHeight(title_h)
         ic = "#cccccc" if theme.name() == "dark" else "#555555"
@@ -923,6 +934,7 @@ class PanelWindow(QWidget):
 
     def _expand_body(self):
         """展开：恢复内容区和窗口高度"""
+        self.weather_bar.show()
         self._body.show()
         h = getattr(self, "_expanded_height", 520)
         self.setMinimumHeight(MIN_H)

ui/settings_window.py

@@ -6,10 +6,12 @@ from PyQt6.QtWidgets import (
     QCheckBox, QGroupBox, QFormLayout, QSpinBox, QFrame
 )
 from PyQt6.QtCore import Qt, QSize
+from PyQt6.QtWidgets import QMessageBox
 from PyQt6.QtGui import QIcon, QPixmap
 import qtawesome as qta
 from db import database
 import ui.theme as theme
+import ui.dialog_style as dialog_style
 
 
 class SettingsWindow(QDialog):
@@ -50,7 +52,10 @@ class SettingsWindow(QDialog):
             ("fa5s.window-maximize", "窗口"),
             ("fa5s.rocket",       "启动"),
             ("fa5s.heart",        "捐赠"),
+            ("fa5s.eraser",       "初始化"),
         ]
+        self._nav_ready = False
+        self._block_nav = False
         for icon_name, label in pages:
             try:
                 icon = qta.icon(icon_name, color="#888")
@@ -59,6 +64,8 @@ class SettingsWindow(QDialog):
                 # 防止图标名不存在导致设置页直接报错
                 icon = qta.icon("fa5s.rocket", color="#888")
                 item = QListWidgetItem(icon, label)
+            if label == "初始化":
+                item.setData(Qt.ItemDataRole.UserRole, "init")
             self.nav.addItem(item)
         self.nav.setCurrentRow(0)
         self.nav.currentRowChanged.connect(self._on_nav)
@@ -69,6 +76,11 @@ class SettingsWindow(QDialog):
         self.stack.addWidget(self._page_window())
         self.stack.addWidget(self._page_startup())
         self.stack.addWidget(self._page_donate())
+        self.stack.addWidget(self._page_initialization())
+        # 此时 stack 已就绪，允许导航回调正常工作
+        self._nav_ready = True
+        self._last_nav_index = self.nav.currentRow()
+        self.stack.setCurrentIndex(self._last_nav_index)
 
         # 分割线
         line = QFrame()
@@ -312,6 +324,29 @@ class SettingsWindow(QDialog):
         self._donate_card = card
         return page
 
+    def _page_initialization(self) -> QWidget:
+        page = QWidget()
+        layout = QVBoxLayout(page)
+        layout.setContentsMargins(24, 20, 24, 20)
+        layout.setSpacing(16)
+
+        layout.addWidget(self._section_title("初始化"))
+
+        desc = QLabel(
+            "点击左侧「初始化」页签后，将弹出确认提醒。\n"
+            "确认后会清空所有分组和程序（不可撤销）。"
+        )
+        desc.setWordWrap(True)
+        desc.setStyleSheet("color:#888; font-size:13px; line-height:1.6;")
+        layout.addWidget(desc)
+
+        self._init_status_lbl = QLabel("")
+        self._init_status_lbl.setStyleSheet("font-size:12px; color:#f90;")
+        layout.addWidget(self._init_status_lbl)
+        layout.addStretch()
+
+        return page
+
     def _open_donate_image(self, img_path: str):
         """点击二维码后的弹窗大图查看。"""
         t = theme.current()
@@ -386,7 +421,51 @@ class SettingsWindow(QDialog):
         return line
 
     def _on_nav(self, index: int):
-        self.stack.setCurrentIndex(index)
+        if self._block_nav:
+            return
+
+        if not getattr(self, "_nav_ready", False) or not hasattr(self, "stack"):
+            return
+
+        item = self.nav.item(index)
+        is_init_tab = bool(item and item.data(Qt.ItemDataRole.UserRole) == "init")
+
+        if not is_init_tab:
+            self.stack.setCurrentIndex(index)
+            self._last_nav_index = index
+            return
+
+        ret = dialog_style.question(
+            self,
+            "初始化",
+            "提醒请谨慎操作！！！！！\n\n"
+            "此操作会清空所有分组和程序，且无法撤销。是否继续？",
+            icon=QMessageBox.Icon.Warning,
+        )
+        if ret == QMessageBox.StandardButton.Yes:
+            try:
+                self._panel.reset_groups_and_items()
+            except Exception as e:
+                # 初始化失败也要尽量让用户知道原因
+                dialog_style.warning(self, "初始化失败", f"清空数据失败：{e}")
+                # 初始化失败则回退到上一个页签
+                self._block_nav = True
+                self.nav.setCurrentRow(self._last_nav_index)
+                self._block_nav = False
+                self.stack.setCurrentIndex(self._last_nav_index)
+                return
+
+            if hasattr(self, "_init_status_lbl"):
+                self._init_status_lbl.setText("已完成初始化（分组和程序已清空）。")
+
+            self.stack.setCurrentIndex(index)
+            self._last_nav_index = index
+        else:
+            # 用户取消：回退到上一个页签
+            self._block_nav = True
+            self.nav.setCurrentRow(self._last_nav_index)
+            self._block_nav = False
+            self.stack.setCurrentIndex(self._last_nav_index)
 
     def _apply_theme(self):
         t = theme.current()