add PTY handler

.gitea/workflows/build-and-push.yml

@@ -33,9 +33,9 @@ jobs:
          run: |
            ip=$(docker inspect ssh-server-test | jq -r '.[0].NetworkSettings.Networks."test-net".IPAddress')
            echo "Server IP: $ip"
-          output=$( { docker run --rm --network test-net alpine sh -c "apk add --no-cache openssh-client && ssh -p 22 -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -o ConnectTimeout=10 root@$ip 'echo test559920'" ; } 2>&1 ; true )
+           output=$( { docker run --rm --network test-net alpine sh -c "apk add --no-cache openssh-client && timeout 5 ssh -t -p 22 -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -o ConnectTimeout=10 root@$ip" ; } 2>&1 ; true )
            echo "Captured output: '$output'"
-          if echo "$output" | grep -q "test559920"; then
+           if echo "$output" | grep -q "Welcome to"; then
              echo "SSH connection test passed"
            else
              echo "SSH connection test failed: $output"

main.go

@@ -225,6 +225,15 @@ func main() {
 }
 
 func teaHandler(s ssh.Session) (tea.Model, []tea.ProgramOption) {
+	// Check if PTY is available
+	ptyReq, _, _ := s.Pty()
+	if ptyReq.Term == "" {
+		// No PTY, handle as command execution
+		s.Write([]byte("This server requires an interactive terminal (PTY).\nPlease connect with: ssh -t user@host\n"))
+		s.Exit(1)
+		return nil, nil
+	}
+
 	return model{
 		showWelcome: true,
 		focus:       0,