diff --git a/interfaces/tui/app.py b/interfaces/tui/app.py
index 4ee5295..ce49523 100644
--- a/interfaces/tui/app.py
+++ b/interfaces/tui/app.py
@@ -185,6 +185,13 @@ class HendrikTUI:
             self.messages.append({"role": "system", "content": context})
         log(self, "welcome", WELCOME_ART)
 
+        keycodes.enable_extended_keys()
+        try:
+            self._run_loop(stdscr)
+        finally:
+            keycodes.disable_extended_keys()
+
+    def _run_loop(self, stdscr):
         while self.running:
             self.h, self.w = stdscr.getmaxyx()
             if self.h < 14 or self.w < 40:
diff --git a/interfaces/tui/keycodes.py b/interfaces/tui/keycodes.py
index 241b7d1..5793661 100644
--- a/interfaces/tui/keycodes.py
+++ b/interfaces/tui/keycodes.py
@@ -16,7 +16,9 @@
 #  menjadi satu set kode yang bisa dibandingkan di actions.py.
 
 import curses
+import os
 import re
+import sys
 
 # Waktu (ms) menunggu byte lanjutan setelah ESC di read_key()
 ESC_PEEK_MS = 30
@@ -110,7 +112,9 @@ def _parse_csi(data: bytes) -> int:
     # data contoh:
     #   b'[12~'      → F2            b'[21~'      → F10
     #   b'[13;5u'    → Ctrl+Enter    b'[13;5~'    → Ctrl+Enter
-    #   b'[115;3u'   → Alt+S (kitty) b'[115;5u'   → Ctrl+S
+    #   b'[27;5;13~' → Ctrl+Enter (xterm modifyOtherKeys)
+    #   b'[115;3u'   → Alt+S (kitty) b'[27;3;115~' → Alt+S (xterm modifyOtherKeys)
+    #   b'[13u'      → Enter (CSI-u) b'[13~'      → F3 (legacy)
     #   b'[A' / b'[B' → panah atas / bawah
     try:
         text = data.decode("ascii", "ignore")
@@ -121,40 +125,61 @@ def _parse_csi(data: bytes) -> int:
     if text[1:] in _CSI_NAV:
         return _CSI_NAV[text[1:]]
 
+    # Format standar CSI-u: ESC[<code>;<mod>u  /  ESC[<code>;mod~ (legacy)
     m = re.match(r"^\[(\d+)(?:;(\d+))?([u~])$", text)
-    if not m:
-        # Navigasi dengan prefiks angka (misal [1;5A = Ctrl+Up)
-        m2 = re.match(r"^\[(?:\d+;)?(\d*)([ABCDHF])$", text)
-        if m2 and m2.group(2) in _CSI_NAV:
-            return _CSI_NAV[m2.group(2)]
-        return KEY_ESC
+    if m:
+        code = int(m.group(1))
+        mod = _csi_mod(m.group(2))
+        terminator = m.group(3)
+    else:
+        # Format legacy xterm modifyOtherKeys: ESC[27;<mod>;<code>[u~]
+        m27 = re.match(r"^\[27;(\d+);(\d+)([u~])$", text)
+        if not m27:
+            # Navigasi dengan prefiks angka (misal [1;5A = Ctrl+Up)
+            m2 = re.match(r"^\[(?:\d+;)?(\d*)([ABCDHF])$", text)
+            if m2 and m2.group(2) in _CSI_NAV:
+                return _CSI_NAV[m2.group(2)]
+            return KEY_ESC
+        code = int(m27.group(2))
+        mod = _csi_mod(m27.group(1))
+        terminator = m27.group(3)
 
-    code = int(m.group(1))
-    mod = _csi_mod(m.group(2))
-    terminator = m.group(3)
+    result = _map_modified_key(code, mod, terminator)
+    if result is not None:
+        return result
+    return KEY_ESC
+
+
+def _map_modified_key(code: int, mod, terminator: str) -> int | None:
+    # Enter (code 13) khusus karena bentrok dengan F3:
+    #   * Ctrl+Enter  → KEY_CTRL_ENTER  (\x1b[13;5u / \x1b[13;5~ / \x1b[27;5;13~)
+    #   * \x1b[13~ tanpa modifier → F3 legacy
+    #   * selain itu (Enter CSI-u/kitty/modifier lain) → Enter (13)
+    if code == 13:
+        if mod["ctrl"]:
+            return KEY_CTRL_ENTER
+        if not (mod["shift"] or mod["alt"]) and terminator == "~":
+            return _CSI_F_KEYS["13"]  # F3
+        return 13
 
     # F1-F12 dengan/tanpa modifier
-    if terminator in ("u", "~") and str(code) in _CSI_F_KEYS:
+    if str(code) in _CSI_F_KEYS:
         return _CSI_F_KEYS[str(code)]
 
-    # Enter + Ctrl → Ctrl+Enter
-    if code == 13 and mod["ctrl"] and terminator in ("u", "~"):
-        return KEY_CTRL_ENTER
-
-    # CSI-u untuk tombol printable (kitty protocol):
+    # CSI-u untuk tombol printable (kitty protocol / xterm modifyOtherKeys):
     #   Ctrl+<huruf> → kode ASCII murni (misal 's' → 19)
     #   Alt+<huruf>  → KEY_ALT(<huruf>)
-    if terminator == "u" and 32 <= code <= 126:
+    if terminator in ("u", "~") and 32 <= code <= 126:
         ch = chr(code).lower()
         if mod["ctrl"]:
             if 97 <= ord(ch) <= 122:
                 return ord(ch) & 0x1f
-            return KEY_ESC
+            return None
         if mod["alt"]:
             return KEY_ALT(ch)
-        return KEY_ESC
+        return None
 
-    return KEY_ESC
+    return None
 
 
 def read_key(stdscr, timeout_ms: int = -1) -> int:
@@ -203,3 +228,23 @@ def alt_key_char(key: int) -> str | None:
     if not is_alt_key(key):
         return None
     return chr(key - _KEY_ALT_BASE).lower()
+
+
+# -------------------------------------------------------------------- protokol keyboard modern ---
+# Supaya Ctrl+Enter (dan kombinasi Alt/Ctrl lain) punya escape sequence sendiri
+# (bukan jatuh jadi \r / ESC+huruf), aktifkan protokol keyboard di terminal:
+#   * \x1b[>1u    → kitty keyboard protocol  (kitty, foot, WezTerm, iTerm2)
+#   * \x1b[>4;2m  → xterm modifyOtherKeys mode 2 (xterm)
+# Terminal yang tidak mendukung akan meng-ignore sekuen ini dengan aman.
+ENABLE_EXTENDED_KEYS = b"\x1b[>1u\x1b[>4;2m"
+DISABLE_EXTENDED_KEYS = b"\x1b[<1u\x1b[>4m"
+
+
+def enable_extended_keys():
+    os.write(sys.stdout.fileno(), ENABLE_EXTENDED_KEYS)
+    sys.stdout.flush()
+
+
+def disable_extended_keys():
+    os.write(sys.stdout.fileno(), DISABLE_EXTENDED_KEYS)
+    sys.stdout.flush()