security: 延长自签名证书有效期至10年，添加完整证书信息

- 证书有效期从5年延长至10年
- 添加完整证书信息：组织、部门、邮箱
- 增加证书可信度

build/generate_cert.ps1

@@ -3,14 +3,15 @@
 
 param(
     [string]$CertPassword = "WindowMsgBot2026",
-    [string]$CertSubject = "CN=WindowMsgBot, O=WindowMsgBot Development",
-    [int]$ValidYears = 5
+    [string]$CertSubject = "CN=WindowMsgBot, O=WindowMsgBot Development, OU=Software Development, E=dev@windowmsgbot.local",
+    [int]$ValidYears = 10
 )
 
 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
+# 使用更完整的证书参数，增加可信度
 $cert = New-SelfSignedCertificate `
     -Subject $CertSubject `
     -Type CodeSigningCert `
@@ -19,7 +20,10 @@ $cert = New-SelfSignedCertificate `
     -KeyAlgorithm RSA `
     -KeyLength 2048 `
     -HashAlgorithm SHA256 `
-    -FriendlyName "WindowMsgBot Code Signing Certificate"
+    -FriendlyName "WindowMsgBot Code Signing Certificate" `
+    -TextExtension @("2.5.29.37={text}1.3.6.1.5.5.7.3.3") `
+    -KeyUsage DigitalSignature, KeyEncipherment `
+    -KeyProtection None
 
 if (-not $cert) {
     Write-Error "证书生成失败!"