diff --git a/.gitignore b/.gitignore
index a9ae564..e525598 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,7 +4,9 @@ __pycache__/
 *.pyo
 *.egg-info/
 dist/
-build/
+# PyInstaller output (在build目录内)，但保留构建脚本
+build/build/
+build/*.log
 
 # Virtual environment
 venv/
diff --git a/build/build.bat b/build/build.bat
new file mode 100644
index 0000000..fcf3cc4
--- /dev/null
+++ b/build/build.bat
@@ -0,0 +1,117 @@
+@echo off
+setlocal enabledelayedexpansion
+
+REM === WindowMsgBot 构建脚本 ===
+REM 自动化打包和签名流程
+REM 用法: build.bat /skip-cert /skip-sign
+REM       build.bat --skip-cert --skip-sign  (PowerShell兼容)
+REM       build.bat skip-cert skip-sign      (无前缀)
+
+set "SCRIPT_DIR=%~dp0"
+set "PROJECT_DIR=%SCRIPT_DIR%.."
+set "PYTHON=%PROJECT_DIR%\.venv311\Scripts\python.exe"
+set "PYINSTALLER=%PYTHON% -m PyInstaller"
+
+set "SKIP_CERT=0"
+set "SKIP_SIGN=0"
+
+REM 解析参数（兼容 / -- 无前缀 三种写法）
+:parse_args
+if "%~1"=="" goto :start_build
+set "_arg=%~1"
+set "_arg=!_arg:/=!"
+set "_arg=!_arg:--=!"
+if "!_arg!"=="skip-cert" set "SKIP_CERT=1"
+if "!_arg!"=="skip-sign" set "SKIP_SIGN=1"
+shift
+goto :parse_args
+
+:start_build
+echo === WindowMsgBot 构建脚本 ===
+echo 项目目录: %PROJECT_DIR%
+echo Python: %PYTHON%
+echo.
+
+REM 检查Python
+if not exist "%PYTHON%" (
+    echo 错误: Python不存在: %PYTHON%
+    echo 请先创建虚拟环境
+    pause
+    exit /b 1
+)
+
+REM 检查PyInstaller
+"%PYTHON%" -c "import PyInstaller" >nul 2>&1
+if %errorlevel% neq 0 (
+    echo 安装PyInstaller...
+    "%PYTHON%" -m pip install pyinstaller
+)
+
+REM 1. 生成证书（可选）
+if "%SKIP_CERT%"=="0" (
+    echo 1. 生成自签名证书...
+    if exist "%SCRIPT_DIR%code_signing_cert.pfx" (
+        echo    证书已存在，跳过生成
+    ) else (
+        powershell -ExecutionPolicy Bypass -File "%SCRIPT_DIR%generate_cert.ps1"
+        if %errorlevel% neq 0 (
+            echo    ⚠ 证书生成失败，继续构建...
+        )
+    )
+) else (
+    echo 1. 跳过证书生成
+)
+
+REM 2. 清理旧构建（只清理PyInstaller输出，保留build目录里的spec和hooks）
+echo.
+echo 2. 清理旧构建文件...
+if exist "%PROJECT_DIR%\build\build" rmdir /s /q "%PROJECT_DIR%\build\build"
+if exist "%PROJECT_DIR%\dist" rmdir /s /q "%PROJECT_DIR%\dist"
+
+REM 3. PyInstaller打包
+echo.
+echo 3. PyInstaller打包...
+
+REM 禁用 CUDA 防止 PyInstaller isolated 子进程 access violation 崩溃
+set "PYTORCH_NO_CUDA_DISPATCH=1"
+set "CUDA_VISIBLE_DEVICES="
+
+cd /d "%PROJECT_DIR%"
+"%PYINSTALLER%" "%SCRIPT_DIR%windowmsgbot.spec" --noconfirm --clean
+if %errorlevel% neq 0 (
+    echo 错误: PyInstaller打包失败!
+    pause
+    exit /b 1
+)
+echo    ✓ 打包完成
+
+REM 4. 签名（可选）
+if "%SKIP_SIGN%"=="0" (
+    echo.
+    echo 4. 签名exe文件...
+    if exist "%SCRIPT_DIR%code_signing_cert.pfx" (
+        call "%SCRIPT_DIR%sign.bat"
+    ) else (
+        echo    ⚠ 证书不存在，跳过签名
+    )
+) else (
+    echo.
+    echo 4. 跳过签名
+)
+
+REM 5. 输出结果
+echo.
+echo 5. 构建结果...
+if exist "%PROJECT_DIR%\dist\WindowMsgBot\WindowMsgBot.exe" (
+    echo    ✓ 可执行文件: %PROJECT_DIR%\dist\WindowMsgBot\WindowMsgBot.exe
+    for %%A in ("%PROJECT_DIR%\dist\WindowMsgBot\WindowMsgBot.exe") do echo    大小: %%~zA 字节
+    echo    ✓ 输出目录: %PROJECT_DIR%\dist\WindowMsgBot\
+) else (
+    echo    ✗ 可执行文件未生成
+)
+
+echo.
+echo === 构建完成 ===
+echo 输出目录: %PROJECT_DIR%\dist
+echo.
+pause
\ No newline at end of file
diff --git a/build/generate_cert.ps1 b/build/generate_cert.ps1
new file mode 100644
index 0000000..1bdeca1
--- /dev/null
+++ b/build/generate_cert.ps1
@@ -0,0 +1,105 @@
+# 生成自签名代码签名证书 - 降低360敏感度
+# 使用方法: 以管理员身份运行 PowerShell, 执行 .\generate_cert.ps1
+
+param(
+    [string]$CertPassword = "WindowMsgBot2026",
+    [string]$CertSubject = "CN=WindowMsgBot, O=WindowMsgBot Development",
+    [int]$ValidYears = 5
+)
+
+Write-Host "=== 生成自签名代码签名证书 ===" -ForegroundColor Cyan
+
+# 1. 生成证书
+Write-Host "1. 生成自签名证书..." -ForegroundColor Yellow
+$cert = New-SelfSignedCertificate `
+    -Subject $CertSubject `
+    -Type CodeSigningCert `
+    -CertStoreLocation "Cert:\CurrentUser\My" `
+    -NotAfter (Get-Date).AddYears($ValidYears) `
+    -KeyAlgorithm RSA `
+    -KeyLength 2048 `
+    -HashAlgorithm SHA256 `
+    -FriendlyName "WindowMsgBot Code Signing Certificate"
+
+if (-not $cert) {
+    Write-Error "证书生成失败!"
+    exit 1
+}
+
+Write-Host "   证书指纹: $($cert.Thumbprint)" -ForegroundColor Green
+
+# 2. 导出PFX文件
+Write-Host "2. 导出PFX文件..." -ForegroundColor Yellow
+$pfxPath = Join-Path $PSScriptRoot "code_signing_cert.pfx"
+$password = ConvertTo-SecureString -String $CertPassword -Force -AsPlainText
+
+Export-PfxCertificate `
+    -Cert $cert `
+    -FilePath $pfxPath `
+    -Password $password
+
+Write-Host "   PFX已保存: $pfxPath" -ForegroundColor Green
+
+# 3. 导出CER文件（公钥）
+Write-Host "3. 导出CER公钥文件..." -ForegroundColor Yellow
+$cerPath = Join-Path $PSScriptRoot "code_signing_cert.cer"
+Export-Certificate `
+    -Cert $cert `
+    -FilePath $cerPath
+
+Write-Host "   CER已保存: $cerPath" -ForegroundColor Green
+
+# 4. 安装到受信任的根证书颁发机构
+Write-Host "4. 安装到受信任的根证书颁发机构..." -ForegroundColor Yellow
+$store = New-Object System.Security.Cryptography.X509Certificates.X509Store(
+    "Root", "LocalMachine")
+$store.Open("ReadWrite")
+$store.Add($cert)
+$store.Close()
+
+Write-Host "   证书已安装到受信任的根证书存储" -ForegroundColor Green
+
+# 5. 验证安装
+Write-Host "5. 验证证书安装..." -ForegroundColor Yellow
+$installed = Get-ChildItem -Path "Cert:\LocalMachine\Root" | 
+    Where-Object { $_.Thumbprint -eq $cert.Thumbprint }
+
+if ($installed) {
+    Write-Host "   ✓ 证书已成功安装到受信任存储" -ForegroundColor Green
+} else {
+    Write-Host "   ⚠ 证书可能未安装到受信任存储" -ForegroundColor Yellow
+}
+
+# 6. 输出证书信息
+Write-Host "`n=== 证书信息 ===" -ForegroundColor Cyan
+Write-Host "主题: $($cert.Subject)"
+Write-Host "指纹: $($cert.Thumbprint)"
+Write-Host "有效期: $($cert.NotBefore) 至 $($cert.NotAfter)"
+Write-Host "用途: $($cert.EnhancedKeyUsageList.FriendlyName -join ', ')"
+Write-Host "`nPFX密码: $CertPassword" -ForegroundColor Yellow
+Write-Host "请妥善保管PFX文件和密码!" -ForegroundColor Red
+
+# 7. 创建证书信息文件
+Write-Host "7. 创建证书信息文件..." -ForegroundColor Yellow
+$infoPath = Join-Path $PSScriptRoot "cert_info.txt"
+@"
+证书信息
+========
+主题: $($cert.Subject)
+指纹: $($cert.Thumbprint)
+有效期: $($cert.NotBefore) 至 $($cert.NotAfter)
+PFX文件: code_signing_cert.pfx
+CER文件: code_signing_cert.cer
+PFX密码: $CertPassword
+
+使用说明
+========
+1. PFX文件用于signtool签名
+2. CER文件可分发给其他人验证签名
+3. 证书已安装到本机受信任存储
+"@ | Out-File -FilePath $infoPath -Encoding UTF8
+
+Write-Host "   证书信息已保存: $infoPath" -ForegroundColor Green
+
+Write-Host "`n=== 完成 ===" -ForegroundColor Cyan
+Write-Host "下一步: 使用 sign.bat 脚本签名exe文件" -ForegroundColor Yellow
\ No newline at end of file
diff --git a/build/hooks/hook-easyocr.py b/build/hooks/hook-easyocr.py
new file mode 100644
index 0000000..437ae23
--- /dev/null
+++ b/build/hooks/hook-easyocr.py
@@ -0,0 +1,20 @@
+"""PyInstaller hook: 避免 easyocr 默认 hook 触发 collect_submodules('torch') 崩溃。
+
+PyInstaller 默认 hook-easyocr.py 会调用 collect_submodules('easyocr')，
+而 easyocr 内部 import torch，导致 isolated 子进程 access violation。
+本 hook 只列出 easyocr 实际需要的子模块，避开 torch 引用。
+"""
+hiddenimports = [
+    'easyocr',
+    'easyocr.easyocr',
+    'easyocr.config',
+    'easyocr.detection',
+    'easyocr.recognition',
+    'easyocr.utils',
+    'easyocr.craft',
+    'easyocr.craft_utils',
+    'easyocr.imgproc',
+    'easyocr.dataset',
+    'easyocr.model',
+    'easyocr.model.vgg_model',
+]
diff --git a/build/hooks/hook-torch.py b/build/hooks/hook-torch.py
new file mode 100644
index 0000000..698c158
--- /dev/null
+++ b/build/hooks/hook-torch.py
@@ -0,0 +1,41 @@
+"""PyInstaller hook: 避免 collect_submodules('torch') 在 isolated 子进程中 access violation 崩溃。
+
+PyInstaller 默认 hook-torch.py 调用 collect_submodules('torch') 遍历全部子模块，
+在 torch 2.5+ 的 isolated 子进程中会触发 0xC0000005 access violation。
+本 hook 直接列出实际需要的 torch 子模块，完全避开 collect_submodules。
+"""
+# 只列出 bot 实际引用的 torch 子模块（通过 import 分析确认）
+hiddenimports = [
+    'torch',
+    'torch.nn',
+    'torch.nn.functional',
+    'torch.nn.modules',
+    'torch.nn.modules.activation',
+    'torch.nn.modules.conv',
+    'torch.nn.modules.linear',
+    'torch.nn.modules.module',
+    'torch.nn.modules.normalization',
+    'torch.nn.modules.padding',
+    'torch.nn.modules.pooling',
+    'torch.nn.modules.rnn',
+    'torch.nn.modules.sparse',
+    'torch.nn.modules.dropout',
+    'torch.nn.modules.batchnorm',
+    'torch.nn.modules.loss',
+    'torch.nn.modules.container',
+    'torch.nn.modules.flatten',
+    'torch.nn.modules.pixelshuffle',
+    'torch.nn.modules.upsampling',
+    'torch.nn.modules.channelshuffle',
+    'torch.cuda',
+    'torch.cuda.amp',
+    'torch.tensor',
+    'torch._C',
+    'torch._utils',
+    'torch.storage',
+    'torch.serialization',
+    'torch.types',
+    'torch.classes',
+    'torch.backends',
+    'torch.backends.cudnn',
+]
diff --git a/build/sign.bat b/build/sign.bat
new file mode 100644
index 0000000..bebb380
--- /dev/null
+++ b/build/sign.bat
@@ -0,0 +1,119 @@
+@echo off
+setlocal enabledelayedexpansion
+
+REM === WindowMsgBot 签名脚本 ===
+REM 使用自签名证书签名exe文件，降低360敏感度
+REM 用法: sign.bat [exe路径]
+
+set "SCRIPT_DIR=%~dp0"
+set "PROJECT_DIR=%SCRIPT_DIR%.."
+set "CERT_PFX=%SCRIPT_DIR%code_signing_cert.pfx"
+set "CERT_PASS=WindowMsgBot2026"
+set "OUTPUT_DIR=%PROJECT_DIR%\dist"
+
+REM 如果没有指定exe文件，查找默认的exe（onedir模式在子目录中）
+if "%~1"=="" (
+    if exist "%OUTPUT_DIR%\WindowMsgBot\WindowMsgBot.exe" (
+        set "EXE_PATH=%OUTPUT_DIR%\WindowMsgBot\WindowMsgBot.exe"
+    ) else (
+        set "EXE_PATH=%OUTPUT_DIR%\WindowMsgBot.exe"
+    )
+) else (
+    set "EXE_PATH=%~1"
+)
+
+echo === WindowMsgBot 代码签名 ===
+echo.
+
+REM 检查exe文件是否存在
+if not exist "%EXE_PATH%" (
+    echo 错误: exe文件不存在: %EXE_PATH%
+    echo 请先运行 PyInstaller 构建: pyinstaller build/windowmsgbot.spec
+    pause
+    exit /b 1
+)
+
+REM 检查证书文件是否存在
+if not exist "%CERT_PFX%" (
+    echo 错误: 证书文件不存在: %CERT_PFX%
+    echo 请先运行证书生成脚本: powershell -ExecutionPolicy Bypass -File build\generate_cert.ps1
+    pause
+    exit /b 1
+)
+
+REM 查找signtool.exe
+set "SIGNTOOL="
+for %%i in (
+    "%ProgramFiles%\Windows Kits\10\bin\x64\signtool.exe"
+    "%ProgramFiles(x86)%\Windows Kits\10\bin\x64\signtool.exe"
+    "%ProgramFiles%\Windows Kits\10\bin\x86\signtool.exe"
+    "%ProgramFiles(x86)%\Windows Kits\10\bin\x86\signtool.exe"
+    "%ProgramFiles%\Microsoft SDKs\Windows\v10.0A\bin\NETFX 4.8 Tools\signtool.exe"
+) do (
+    if exist %%i (
+        set "SIGNTOOL=%%~i"
+        goto :found_sign
+    )
+)
+
+REM 尝试从PATH查找
+where signtool.exe >nul 2>&1
+if %errorlevel% equ 0 (
+    set "SIGNTOOL=signtool.exe"
+    goto :found_sign
+)
+
+echo 错误: 未找到 signtool.exe
+echo 请安装 Windows SDK 或 Windows Kits
+echo 下载地址: https://developer.microsoft.com/en-us/windows/downloads/windows-sdk/
+pause
+exit /b 1
+
+:found_sign
+echo 使用signtool: %SIGNTOOL%
+echo.
+
+REM 1. 签名exe
+echo 1. 签名exe文件...
+"%SIGNTOOL%" sign /f "%CERT_PFX%" /p "%CERT_PASS%" /tr http://timestamp.digicert.com /td sha256 /fd sha256 "%EXE_PATH%"
+if %errorlevel% neq 0 (
+    echo 错误: 签名失败!
+    pause
+    exit /b 1
+)
+echo    ✓ 签名成功
+
+REM 2. 验证签名
+echo.
+echo 2. 验证签名...
+"%SIGNTOOL%" verify /pa "%EXE_PATH%"
+if %errorlevel% equ 0 (
+    echo    ✓ 签名验证通过
+) else (
+    echo    ⚠ 签名验证失败，但签名可能已应用
+)
+
+REM 3. 显示签名信息
+echo.
+echo 3. 签名信息...
+"%SIGNTOOL%" verify /v "%EXE_PATH%" 2>nul | findstr /i "Signing"
+echo.
+
+REM 4. 复制签名后的exe到项目根目录
+echo 4. 复制签名后的exe...
+copy "%EXE_PATH%" "%PROJECT_DIR%\WindowMsgBot_signed.exe" >nul
+if %errorlevel% equ 0 (
+    echo    ✓ 已复制到: %PROJECT_DIR%\WindowMsgBot_signed.exe
+) else (
+    echo    ⚠ 复制失败
+)
+
+echo.
+echo === 完成 ===
+echo 签名后的exe: %EXE_PATH%
+echo 备份副本: %PROJECT_DIR%\WindowMsgBot_signed.exe
+echo.
+echo 注意: 自签名证书需要在目标机器上安装证书才能验证签名
+echo 证书文件: %CERT_PFX%
+echo.
+pause
\ No newline at end of file
diff --git a/build/windowmsgbot.spec b/build/windowmsgbot.spec
new file mode 100644
index 0000000..41a9c59
--- /dev/null
+++ b/build/windowmsgbot.spec
@@ -0,0 +1,172 @@
+# -*- mode: python ; coding: utf-8 -*-
+# WindowMsgBot PyInstaller spec文件
+# 用法: pyinstaller build/windowmsgbot.spec
+
+import os
+import sys
+from PyInstaller.utils.hooks import collect_submodules, collect_data_files
+
+# 项目根目录
+PROJECT_ROOT = os.path.dirname(os.path.dirname(os.path.abspath(SPEC)))
+
+# 收集所有需要的子模块
+hiddenimports = [
+    'uiautomation',
+    'win32gui',
+    'win32con', 
+    'win32api',
+    'win32process',
+    'psutil',
+    'PIL',
+    'PIL.Image',
+    'PIL.ImageGrab',
+    'PIL.ImageEnhance',
+    'PIL.ImageFilter',
+    'easyocr',
+    'numpy',
+    'torch',
+    'torchvision',
+    'sklearn',
+    'sklearn.feature_extraction.text',
+    'sklearn.metrics.pairwise',
+    'jieba',
+    'customtkinter',
+    'comtypes',
+    'comtypes.client',
+    'win32com',
+    'win32com.client',
+    'pythoncom',
+    'pywintypes',
+    'ctypes',
+    'ctypes.wintypes',
+    'sqlite3',
+    'json',
+    'hashlib',
+    'difflib',
+    'unicodedata',
+    'signal',
+    'subprocess',
+    'threading',
+    'logging',
+    'traceback',
+    'faulthandler',
+    're',
+    'random',
+    'datetime',
+    'time',
+    'sys',
+    'os',
+    'io',
+    'math',
+    'struct',
+    'codecs',
+    'encodings',
+    'encodings.utf_8',
+    'encodings.gbk',
+    'encodings.gb2312',
+    'encodings.gb18030',
+]
+
+# 数据文件
+datas = [
+    # 知识库目录
+    (os.path.join(PROJECT_ROOT, '知识库'), '知识库'),
+    # 偏旁库
+    (os.path.join(PROJECT_ROOT, 'unicode_radicals.md'), '.'),
+    # 配置文件
+    (os.path.join(PROJECT_ROOT, 'config.json'), '.'),
+    # EasyOCR worker脚本（作为数据文件，运行时提取）
+    (os.path.join(PROJECT_ROOT, 'easyocr_worker.py'), '.'),
+    # 其他必要文件
+    (os.path.join(PROJECT_ROOT, 'auto_reply.py'), '.'),
+    (os.path.join(PROJECT_ROOT, 'knowledge_base.py'), '.'),
+    (os.path.join(PROJECT_ROOT, 'config.py'), '.'),
+    (os.path.join(PROJECT_ROOT, 'gui.py'), '.'),
+]
+
+# 收集easyocr数据文件
+easyocr_datas = collect_data_files('easyocr')
+datas.extend(easyocr_datas)
+
+# 分析
+a = Analysis(
+    [os.path.join(PROJECT_ROOT, 'main.py')],
+    pathex=[PROJECT_ROOT],
+    binaries=[],
+    datas=datas,
+    hiddenimports=hiddenimports,
+    hookspath=[os.path.join(PROJECT_ROOT, 'build', 'hooks')],
+    hooksconfig={},
+    runtime_hooks=[],
+    excludes=[
+        'tkinter.test',
+        'unittest',
+        'test',
+        'distutils',
+        'setuptools',
+        'pip',
+        'pkg_resources',
+        'pydoc',
+        'doctest',
+        'torch.autograd',
+        'torch.testing',
+        'torch.distributed',
+        'torch.fx',
+        'torch.jit',
+        'torch.onnx',
+        'torch.profiler',
+        'torch.sparse',
+        'torch.utils.benchmark',
+        'torch.utils.bottleneck',
+        'torch.utils.checkpoint',
+        'torch.utils.collect_env',
+        'torch.utils.cpp_extension',
+        'torch.utils.data',
+        'torch.utils.deterministic',
+        'torch.utils.dlpack',
+        'torch.utils.file_baton',
+        'torch.utils.hipify',
+        'torch.utils.jit',
+        'torch.utils.mobile_optimizer',
+        'torch.utils.model_zoo',
+        'torch.utils.show_pickle',
+        'torch.utils.tensorboard',
+        'torch.utils.throughput_benchmark',
+    ],
+    noarchive=False,
+)
+
+# 过滤掉不必要的大文件
+a.datas = [d for d in a.datas if not d[0].endswith(('.pyc', '.pyo'))]
+
+# PYZ - Python字节码
+pyz = PYZ(a.pure)
+
+# EXE - 主程序（onedir模式：只放脚本+PYZ，不嵌入binaries/data）
+exe = EXE(
+    pyz,
+    a.scripts,
+    [],
+    exclude_binaries=True,  # onedir关键：不嵌入二进制，交给COLLECT
+    name='WindowMsgBot',
+    debug=False,
+    bootloader_ignore_signals=False,
+    strip=False,
+    upx=False,  # UPX对大型DLL（torch/scipy）常出问题，关掉
+    console=True,
+    disable_windowed_traceback=False,
+    argv_emulation=False,
+    target_arch=None,
+    codesign_identity=None,
+    entitlements_file=None,
+)
+
+# COLLECT - 收集所有文件到输出目录
+coll = COLLECT(
+    exe,
+    a.binaries,
+    a.datas,
+    strip=False,
+    upx=False,
+    name='WindowMsgBot',
+)
\ No newline at end of file
diff --git a/msg_history.db b/msg_history.db
new file mode 100644
index 0000000..2bb7eeb
Binary files /dev/null and b/msg_history.db differ