Kursor ostaje vidljiv dok Claude radi

Strip \e[?25l (hide cursor) iz PTY output-a jer Claude Code Ink TUI
sakrije terminal kursor. xterm.js kursor sad ostaje uvek vidljiv.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

pty_session.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"bytes"
 	"fmt"
 	"log"
 	"os"
@@ -11,6 +12,10 @@ import (
 	"github.com/creack/pty"
 )
 
+// ANSI escape sequence to hide cursor — Claude Code's Ink TUI sends this.
+// We strip it so xterm.js cursor stays visible.
+var cursorHideSeq = []byte("\x1b[?25l")
+
 const (
 	outputBufferSize = 128 * 1024 // 128KB ring buffer for replay
 	ptyIdleTimeout   = 60 * time.Minute
@@ -118,6 +123,12 @@ func (s *PTYSession) readLoop() {
 		data := make([]byte, n)
 		copy(data, buf[:n])
 
+		// Strip cursor hide sequence so xterm.js cursor stays visible
+		data = bytes.ReplaceAll(data, cursorHideSeq, []byte{})
+		if len(data) == 0 {
+			continue
+		}
+
 		s.buffer.Write(data)
 
 		s.mu.Lock()