feat: implement local terminal support with shell configuration and UI integration

go.mod

@@ -3,7 +3,9 @@ module github.com/andydixon/nexus
 go 1.25.0
 
 require (
+	github.com/creack/pty v1.1.24
 	github.com/google/uuid v1.6.0
+	github.com/gorilla/websocket v1.5.3
 	github.com/mattn/go-sqlite3 v1.14.22
 	github.com/pkg/sftp v1.13.10
 	github.com/pquerna/otp v1.5.0
@@ -22,7 +24,6 @@ require (
 	github.com/danieljoos/wincred v1.2.0 // indirect
 	github.com/go-ole/go-ole v1.3.0 // indirect
 	github.com/godbus/dbus/v5 v5.1.0 // indirect
-	github.com/gorilla/websocket v1.5.3 // indirect
 	github.com/jchv/go-winloader v0.0.0-20210711035445-715c2860da7e // indirect
 	github.com/kr/fs v0.1.0 // indirect
 	github.com/labstack/echo/v4 v4.13.3 // indirect