refactor(file,shell,process): 去 gin 化——标准库 http.HandlerFunc + webhttp.Router 适配层

- 新增 webhttp 包: Router 最小路由接口(5 动词) + ServeMuxRouter 适配器 + WriteJSON 统一响应
- file/shell/process 三个被控能力包改以标准库 handler 形态注册, 不再绑死 gin
- 由此 gin 及其连带重依赖(quic-go/http3、mongo bson、ugorji codec、goccy、validator)退出被控端二进制
- shell: recDir 死参数修复——原实现硬编码 ./rec, 传入的录制目录不生效; 现录制写入与记录列表同源
- shell: 终端创建失败由 panic 改为记日志后关连接(net/http 按连接兜底恢复, 不再依赖框架 Recovery)
- file: 上传落盘不再沿用 SaveUploadedFile 的 MkdirAll+Chmod(Windows 盘根 Chmod 报参数不正确), 保留 MkdirAll 去掉 Chmod
- 消费方: remote-client 纯 ServeMux 承载; remote-service 保留 gin 栈经 gin.WrapH 桥接(middle 链照常生效)

破坏性变更: RegisterRouters* 形参 gin.RouterGroup → webhttp.Router, 升级 tag v0.5.0

go.mod

@@ -4,7 +4,6 @@ go 1.26.0
 
 require (
 	github.com/KarpelesLab/vncpasswd v1.0.1
-	github.com/gin-gonic/gin v1.12.0
 	github.com/gorilla/websocket v1.5.3
 	github.com/jaypipes/ghw v0.13.0
 	github.com/kardianos/service v1.2.2
@@ -17,45 +16,21 @@ require (
 
 require (
 	github.com/StackExchange/wmi v1.2.1 // indirect
-	github.com/bytedance/gopkg v0.1.3 // indirect
-	github.com/bytedance/sonic v1.15.0 // indirect
-	github.com/bytedance/sonic/loader v0.5.0 // indirect
-	github.com/cloudwego/base64x v0.1.6 // indirect
 	github.com/creack/pty v1.1.17 // indirect
-	github.com/gabriel-vasile/mimetype v1.4.15 // indirect
-	github.com/gin-contrib/sse v1.1.0 // indirect
 	github.com/go-ole/go-ole v1.2.6 // indirect
-	github.com/go-playground/locales v0.14.1 // indirect
-	github.com/go-playground/universal-translator v0.18.1 // indirect
-	github.com/go-playground/validator/v10 v10.30.4 // indirect
-	github.com/goccy/go-json v0.10.5 // indirect
-	github.com/goccy/go-yaml v1.19.2 // indirect
+	github.com/google/go-cmp v0.7.0 // indirect
 	github.com/iamacarpet/go-winpty v1.0.2 // indirect
 	github.com/jaypipes/pcidb v1.0.1 // indirect
-	github.com/json-iterator/go v1.1.12 // indirect
-	github.com/klauspost/cpuid/v2 v2.3.0 // indirect
-	github.com/leodido/go-urn v1.5.0 // indirect
+	github.com/kr/pretty v0.3.1 // indirect
 	github.com/lufia/plan9stats v0.0.0-20211012122336-39d0f177ccd0 // indirect
-	github.com/mattn/go-isatty v0.0.20 // indirect
 	github.com/mitchellh/go-homedir v1.1.0 // indirect
-	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
-	github.com/modern-go/reflect2 v1.0.2 // indirect
-	github.com/pelletier/go-toml/v2 v2.2.4 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
 	github.com/power-devops/perfstat v0.0.0-20210106213030-5aafc221ea8c // indirect
-	github.com/quic-go/qpack v0.6.0 // indirect
-	github.com/quic-go/quic-go v0.59.0 // indirect
+	github.com/rogpeppe/go-internal v1.10.0 // indirect
 	github.com/shoenig/go-m1cpu v0.1.6 // indirect
 	github.com/tklauser/go-sysconf v0.3.12 // indirect
 	github.com/tklauser/numcpus v0.6.1 // indirect
-	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
-	github.com/ugorji/go/codec v1.3.1 // indirect
-	go.mongodb.org/mongo-driver/v2 v2.5.0 // indirect
-	golang.org/x/arch v0.22.0 // indirect
-	golang.org/x/crypto v0.57.0 // indirect
-	golang.org/x/net v0.58.0 // indirect
-	golang.org/x/text v0.42.0 // indirect
-	google.golang.org/protobuf v1.36.10 // indirect
+	gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c // indirect
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 	howett.net/plist v1.0.0 // indirect
 )