feat: 添加依赖自动检测与安装、选项记忆、KDocs登录优化

- 新增依赖检测模块：启动时自动检测wkhtmltoimage和Playwright Chromium
- 新增依赖安装对话框：缺失时提示用户一键下载安装
- 修复选项记忆功能：浏览类型、自动截图、自动上传选项现在会保存
- 优化KDocs登录检测：未登录时自动切换到金山文档页面并显示二维码
- 简化日志输出：移除debug信息，保留用户友好的状态提示
- 新增账号变化信号：账号管理页面的修改会自动同步到浏览任务页面

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

utils/dependency_installer.py

@@ -0,0 +1,228 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+"""
+依赖检测和安装模块
+检测 wkhtmltoimage 和 Playwright Chromium 是否已安装
+如果缺失则从直链下载安装
+"""
+
+import os
+import shutil
+import subprocess
+import tempfile
+import zipfile
+from pathlib import Path
+from typing import Optional, Callable, Dict, Tuple
+
+# 直链下载地址
+DOWNLOAD_URLS = {
+    "wkhtmltopdf": "http://by.haory.cn/3/1223/wkhtmltox.exe",
+    "chromium": "http://by.haory.cn/3/1223/chromium-win64.zip",
+}
+
+# Playwright chromium 版本目录名（与 playwright 1.57.0 对应）
+CHROMIUM_VERSION_DIR = "chromium-1200"
+
+
+def check_wkhtmltoimage() -> bool:
+    """检测 wkhtmltoimage 是否已安装"""
+    # 先检查 PATH
+    if shutil.which("wkhtmltoimage"):
+        return True
+
+    # 检查默认安装路径
+    default_paths = [
+        r"C:\Program Files\wkhtmltopdf\bin\wkhtmltoimage.exe",
+        r"C:\Program Files (x86)\wkhtmltopdf\bin\wkhtmltoimage.exe",
+    ]
+    for p in default_paths:
+        if os.path.exists(p):
+            return True
+
+    return False
+
+
+def check_playwright_chromium() -> bool:
+    """检测 Playwright Chromium 浏览器是否已安装"""
+    local_appdata = os.environ.get("LOCALAPPDATA", "")
+    if not local_appdata:
+        return False
+
+    chromium_path = Path(local_appdata) / "ms-playwright" / CHROMIUM_VERSION_DIR
+
+    # 检查目录是否存在且包含chrome.exe
+    if chromium_path.exists():
+        chrome_exe = chromium_path / "chrome-win" / "chrome.exe"
+        if chrome_exe.exists():
+            return True
+
+    return False
+
+
+def get_missing_dependencies() -> Dict[str, bool]:
+    """获取缺失的依赖列表"""
+    return {
+        "wkhtmltoimage": not check_wkhtmltoimage(),
+        "chromium": not check_playwright_chromium(),
+    }
+
+
+def download_file(url: str, dest_path: str, progress_callback: Optional[Callable] = None) -> bool:
+    """
+    下载文件
+
+    Args:
+        url: 下载地址
+        dest_path: 保存路径
+        progress_callback: 进度回调 (downloaded_bytes, total_bytes)
+
+    Returns:
+        是否成功
+    """
+    import urllib.request
+
+    try:
+        def report_progress(block_num, block_size, total_size):
+            if progress_callback:
+                downloaded = block_num * block_size
+                progress_callback(downloaded, total_size)
+
+        urllib.request.urlretrieve(url, dest_path, reporthook=report_progress)
+        return True
+    except Exception as e:
+        print(f"下载失败: {e}")
+        return False
+
+
+def install_wkhtmltopdf(installer_path: str, log_callback: Optional[Callable] = None) -> bool:
+    """
+    安装 wkhtmltopdf
+
+    Args:
+        installer_path: 安装包路径
+        log_callback: 日志回调
+
+    Returns:
+        是否成功
+    """
+    def log(msg):
+        if log_callback:
+            log_callback(msg)
+
+    try:
+        log("正在启动 wkhtmltopdf 安装程序...")
+        # 启动安装程序（需要用户手动完成安装向导）
+        subprocess.Popen([installer_path], shell=True)
+        log("请在安装向导中完成安装（建议保持默认路径）")
+        return True
+    except Exception as e:
+        log(f"启动安装程序失败: {e}")
+        return False
+
+
+def install_playwright_chromium(zip_path: str, log_callback: Optional[Callable] = None) -> bool:
+    """
+    安装 Playwright Chromium 浏览器
+
+    Args:
+        zip_path: zip包路径
+        log_callback: 日志回调
+
+    Returns:
+        是否成功
+    """
+    def log(msg):
+        if log_callback:
+            log_callback(msg)
+
+    try:
+        local_appdata = os.environ.get("LOCALAPPDATA", "")
+        if not local_appdata:
+            log("无法获取 LOCALAPPDATA 路径")
+            return False
+
+        # 目标目录
+        playwright_dir = Path(local_appdata) / "ms-playwright"
+        chromium_dir = playwright_dir / CHROMIUM_VERSION_DIR
+
+        # 创建目录
+        playwright_dir.mkdir(parents=True, exist_ok=True)
+
+        log("正在解压 Chromium 浏览器...")
+
+        # 解压
+        with zipfile.ZipFile(zip_path, 'r') as zip_ref:
+            zip_ref.extractall(chromium_dir)
+
+        # 创建标记文件（Playwright需要这些文件来确认安装完成）
+        (chromium_dir / "INSTALLATION_COMPLETE").touch()
+        (chromium_dir / "DEPENDENCIES_VALIDATED").touch()
+
+        log("Chromium 浏览器安装成功")
+        return True
+    except Exception as e:
+        log(f"安装 Chromium 失败: {e}")
+        return False
+
+
+def download_and_install_dependency(
+    dep_name: str,
+    progress_callback: Optional[Callable] = None,
+    log_callback: Optional[Callable] = None
+) -> Tuple[bool, str]:
+    """
+    下载并安装指定依赖
+
+    Args:
+        dep_name: 依赖名称 ("wkhtmltoimage" 或 "chromium")
+        progress_callback: 下载进度回调
+        log_callback: 日志回调
+
+    Returns:
+        (是否成功, 错误信息)
+    """
+    def log(msg):
+        if log_callback:
+            log_callback(msg)
+
+    # 获取下载地址
+    if dep_name == "wkhtmltoimage":
+        url = DOWNLOAD_URLS["wkhtmltopdf"]
+        filename = "wkhtmltox_installer.exe"
+    elif dep_name == "chromium":
+        url = DOWNLOAD_URLS["chromium"]
+        filename = "chromium-win64.zip"
+    else:
+        return False, f"未知依赖: {dep_name}"
+
+    # 下载到临时目录
+    temp_dir = tempfile.gettempdir()
+    download_path = os.path.join(temp_dir, filename)
+
+    log(f"正在下载 {dep_name}...")
+
+    if not download_file(url, download_path, progress_callback):
+        return False, "下载失败"
+
+    log("下载完成，正在安装...")
+
+    # 安装
+    if dep_name == "wkhtmltoimage":
+        success = install_wkhtmltopdf(download_path, log_callback)
+        if success:
+            return True, "安装程序已启动，请完成安装向导"
+        else:
+            return False, "启动安装程序失败"
+    elif dep_name == "chromium":
+        success = install_playwright_chromium(download_path, log_callback)
+        # 清理下载的zip文件
+        try:
+            os.remove(download_path)
+        except:
+            pass
+        if success:
+            return True, ""
+        else:
+            return False, "安装失败"
+
+    return False, "未知错误"