修复了一些bug

scripts/build.ps1

@@ -29,6 +29,32 @@ if ($zig) {
 $env:CC = $cc
 $env:CGO_ENABLED = "1"
 
+# 双击 bat 时 Explorer 的 PATH 可能没有 go；按常见位置补上
+if (-not (Get-Command go -ErrorAction SilentlyContinue)) {
+    $goExe = $null
+    $exact = @()
+    if ($env:GOROOT) { $exact += (Join-Path $env:GOROOT "bin\go.exe") }
+    $exact += "C:\Program Files\Go\bin\go.exe"
+    foreach ($p in $exact) {
+        if (Test-Path -LiteralPath $p) { $goExe = $p; break }
+    }
+    if (-not $goExe) {
+        $globs = @(
+            (Join-Path $env:USERPROFILE "sdk\go*\bin\go.exe"),
+            "D:\*\sdk\go*\bin\go.exe"
+        )
+        $hit = Get-ChildItem -Path $globs -ErrorAction SilentlyContinue | Select-Object -First 1
+        if ($hit) { $goExe = $hit.FullName }
+    }
+    if ($goExe) {
+        $env:Path = "$(Split-Path $goExe);$env:Path"
+        Write-Host "== 使用 go: $goExe =="
+    } else {
+        Write-Host "== 未找到 go：请安装 Go 或把 go.exe 加入 PATH。"
+        exit 1
+    }
+}
+
 $tags = "gl"
 if (-not $Release) { $tags = "$tags dev" }
 
@@ -40,7 +66,7 @@ try {
         & (Join-Path $PSScriptRoot "make_icon.ps1")
         if ($LASTEXITCODE -ne 0) { throw "图标生成失败（make_icon.ps1）" }
     }
-    go build -tags $tags -trimpath -ldflags "-s -w" -o bin/mc-client.exe ./cmd/client
+    go build -tags $tags -trimpath -ldflags "-s -w -H windowsgui" -o bin/mc-client.exe ./cmd/client
     go build -trimpath -ldflags "-s -w" -o bin/mc-server.exe ./cmd/server
 
     # 资源入 bin/（可执行文件目录解析：双击/快捷方式运行无需依赖工作目录）