refactor(session): add registry to manage SSH sessions

- Implement thread-safe session registry with sync.RWMutex
- Add Registry interface for session management operations
- Support Get, Register, Update, and Remove session operations
- Enable dynamic slug updates for existing sessions
- Fix Connection closed by remote because HandleTCPIPForward run on a goroutine

session/handler.go

@@ -106,7 +106,6 @@ func (s *SSHSession) HandleTCPIPForward(req *ssh.Request) {
 	}
 
 	portToBind := uint16(rawPortToBind)
-
 	if isBlockedPort(portToBind) {
 		log.Printf("Port %d is blocked or restricted", portToBind)
 		err := req.Reply(false, nil)

session/interaction/interaction.go

@@ -199,6 +199,11 @@ func (m model) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
 		}
 
 		if m.editingSlug {
+			if m.tunnelType != types.HTTP {
+				m.editingSlug = false
+				m.slugError = ""
+				return m, tea.Batch(tea.ClearScreen, textinput.Blink)
+			}
 			switch msg.String() {
 			case "esc":
 				m.editingSlug = false

session/session.go

@@ -92,7 +92,7 @@ func (s *SSHSession) Start() error {
 	s.lifecycle.SetChannel(ch)
 	s.interaction.SetChannel(ch)
 
-	go s.HandleTCPIPForward(tcpipReq)
+	s.HandleTCPIPForward(tcpipReq)
 
 	if err := s.lifecycle.Close(); err != nil {
 		log.Printf("failed to close session: %v", err)