fix: polish onboard wizard keyboard navigation

nanobot/cli/onboard.py

@@ -109,6 +109,7 @@ _UI_BORDER = "#4E5254"
 _UI_TEXT = "#A9B7C6"
 _UI_MUTED = "#80868B"
 _UI_SUCCESS = "#6AAB73"
+_PROMPT_ESCAPE_TIMEOUT_SECONDS = 0.05
 _CHANNEL_LOGIN_CHOICE = "Login with QR/link"
 _CHANNEL_ADVANCED_CHOICE = "Edit advanced settings"
 
@@ -138,6 +139,8 @@ def _select_with_back(
         The selected choice string if user confirmed
         None if user cancelled (Ctrl+C)
     """
+    import shutil
+
     from prompt_toolkit.application import Application
     from prompt_toolkit.key_binding import KeyBindings
     from prompt_toolkit.keys import Keys
@@ -158,11 +161,15 @@ def _select_with_back(
 
     # State holder for the result
     state: dict[str, str | None | object] = {"result": None}
+    terminal_lines = shutil.get_terminal_size((80, 24)).lines
+    visible_count = min(len(choices), max(1, terminal_lines - 3))
 
     # Build menu items (uses closure over selected_index)
     def get_menu_text():
         items = []
-        for i, choice in enumerate(choices):
+        start, end = _choice_viewport(selected_index, len(choices), visible_count)
+        for i in range(start, end):
+            choice = choices[i]
             if i == selected_index:
                 items.append(("class:selected", f"> {choice}\n"))
             else:
@@ -170,11 +177,15 @@ def _select_with_back(
         return items
 
     # Create layout
-    menu_control = FormattedTextControl(get_menu_text)
+    menu_control = FormattedTextControl(get_menu_text, show_cursor=False)
-    menu_window = Window(content=menu_control, height=len(choices))
+    menu_window = Window(content=menu_control, height=visible_count, always_hide_cursor=True)
 
-    prompt_control = FormattedTextControl(lambda: [("class:question", f"> {prompt}")])
+    def get_prompt_text():
-    prompt_window = Window(content=prompt_control, height=1)
+        suffix = f" ({selected_index + 1}/{len(choices)})" if len(choices) > visible_count else ""
+        return [("class:question", f"{prompt}{suffix}")]
+
+    prompt_control = FormattedTextControl(get_prompt_text, show_cursor=False)
+    prompt_window = Window(content=prompt_control, height=1, always_hide_cursor=True)
 
     layout = Layout(HSplit([prompt_window, menu_window]))
 
@@ -220,6 +231,8 @@ def _select_with_back(
     })
 
     app = Application(layout=layout, key_bindings=bindings, style=style)
+    app.ttimeoutlen = 0.05
+    app.timeoutlen = 0.05
     try:
         app.run()
     except Exception:
@@ -228,6 +241,18 @@ def _select_with_back(
 
     return state["result"]
 
+
+def _choice_viewport(selected_index: int, total: int, visible_count: int) -> tuple[int, int]:
+    """Return the visible slice for a long terminal menu."""
+    if total <= 0:
+        return 0, 0
+    visible_count = max(1, min(visible_count, total))
+    selected_index = max(0, min(selected_index, total - 1))
+    half = visible_count // 2
+    start = selected_index - half
+    start = max(0, min(start, total - visible_count))
+    return start, start + visible_count
+
 # --- Type Introspection ---
 
 
@@ -474,14 +499,44 @@ def _input_bool(display_name: str, current: bool | None) -> bool | None:
     ).ask()
 
 
+def _input_back_key_bindings():
+    """Return key bindings that make Escape behave like a local back action."""
+    from prompt_toolkit.key_binding import KeyBindings
+
+    bindings = KeyBindings()
+
+    @bindings.add("escape")
+    def _escape(event):
+        event.app.exit(result=_BACK_PRESSED)
+
+    return bindings
+
+
+def _ask_prompt(prompt):
+    """Ask a questionary prompt with responsive Escape handling."""
+    app = getattr(prompt, "application", None)
+    if app is not None:
+        if hasattr(app, "ttimeoutlen"):
+            app.ttimeoutlen = _PROMPT_ESCAPE_TIMEOUT_SECONDS
+        if hasattr(app, "timeoutlen"):
+            app.timeoutlen = _PROMPT_ESCAPE_TIMEOUT_SECONDS
+    return prompt.ask()
+
+
 def _input_text(display_name: str, current: Any, field_type: str, field_info=None) -> Any:
     """Get text input and parse based on field type."""
     default = _format_value_for_input(current, field_type)
 
-    value = _get_questionary().text(f"{display_name}:", default=default).ask()
+    value = _ask_prompt(
+        _get_questionary().text(
+            f"{display_name}:",
+            default=default,
+            key_bindings=_input_back_key_bindings(),
+        )
+    )
 
-    if value is None:
+    if value is _BACK_PRESSED or value is None:
-        return None
+        return None if value is None else _BACK_PRESSED
 
     if field_type == "int":
         try:
@@ -519,14 +574,14 @@ def _input_text(display_name: str, current: Any, field_type: str, field_info=Non
     return value
 
 
-def _input_secret(display_name: str) -> str | None:
+def _input_secret(display_name: str) -> str | None | object:
     """Get a secret value without echoing it when questionary supports password input."""
     prompt_factory = getattr(_get_questionary(), "password", None)
     if prompt_factory is None:
         prompt_factory = _get_questionary().text
-    value = prompt_factory(f"{display_name}:").ask()
+    value = _ask_prompt(prompt_factory(f"{display_name}:", key_bindings=_input_back_key_bindings()))
-    if value is None:
+    if value is _BACK_PRESSED or value is None:
-        return None
+        return None if value is None else _BACK_PRESSED
     return str(value).strip()
 
 
@@ -560,7 +615,7 @@ def _get_current_provider(model: BaseModel) -> str:
 
 def _input_model_with_autocomplete(
     display_name: str, current: Any, provider: str
-) -> str | None:
+) -> str | None | object:
     """Get model input with autocomplete suggestions.
 
     """
@@ -587,20 +642,25 @@ def _input_model_with_autocomplete(
                     display=model,
                 )
 
-    value = _get_questionary().autocomplete(
+    value = _ask_prompt(
+        _get_questionary().autocomplete(
             f"{display_name}:",
             choices=[""],  # Placeholder, actual completions from completer
             completer=DynamicModelCompleter(provider),
             default=default,
+            key_bindings=_input_back_key_bindings(),
             qmark=">",
-    ).ask()
+        )
+    )
 
-    return value if value is not None else None
+    if value is _BACK_PRESSED or value is None:
+        return None if value is None else _BACK_PRESSED
+    return value
 
 
 def _input_context_window_with_recommendation(
     display_name: str, current: Any, model_obj: BaseModel
-) -> int | None:
+) -> int | None | object:
     """Get context window input with option to fetch recommended value."""
     current_val = current if current else ""
 
@@ -645,8 +705,11 @@ def _input_context_window_with_recommendation(
     value = _get_questionary().text(
         f"{display_name}:",
         default=str(current_val) if current_val else "",
+        key_bindings=_input_back_key_bindings(),
     ).ask()
 
+    if value is _BACK_PRESSED:
+        return _BACK_PRESSED
     if value is None or value == "":
         return None
 
@@ -663,6 +726,8 @@ def _handle_model_field(
     """Handle the 'model' field with autocomplete and context-window auto-fill."""
     provider = _get_current_provider(working_model)
     new_value = _input_model_with_autocomplete(field_display, current_value, provider)
+    if new_value is _BACK_PRESSED:
+        return
     if new_value is not None and new_value != current_value:
         setattr(working_model, field_name, new_value)
         _try_auto_fill_context_window(working_model, new_value)
@@ -675,6 +740,8 @@ def _handle_context_window_field(
     new_value = _input_context_window_with_recommendation(
         field_display, current_value, working_model
     )
+    if new_value is _BACK_PRESSED:
+        return
     if new_value is not None:
         setattr(working_model, field_name, new_value)
 
@@ -902,6 +969,8 @@ def _configure_pydantic_model(
             new_value = _input_bool(field_display, current_value)
         else:
             new_value = _input_with_existing(field_display, current_value, ftype.type_name, field_info=field_info)
+        if new_value is _BACK_PRESSED:
+            continue
         if new_value is not None:
             # Normalize empty string to None for optional string fields so that
             # clearing an api_key / api_base actually removes the value.
@@ -1523,7 +1592,7 @@ def _select_quick_start_api_base(
     provider_name: str,
     provider_display: str,
     info: _QuickStartProviderInfo | None,
-) -> tuple[str, bool] | None:
+) -> tuple[str, bool] | None | object:
     """Return the api_base and whether the user explicitly selected or entered it."""
     endpoint_choices = _QUICK_START_ENDPOINT_CHOICES.get(provider_name)
     if endpoint_choices:
@@ -1533,7 +1602,9 @@ def _select_quick_start_api_base(
             list(choices) + ["<- Back"],
             default=endpoint_choices[0].label,
         )
-        if answer is _BACK_PRESSED or answer is None or answer == "<- Back":
+        if answer is _BACK_PRESSED or answer == "<- Back":
+            return _BACK_PRESSED
+        if answer is None:
             return None
         assert isinstance(answer, str)
         return choices[answer], True
@@ -1547,6 +1618,8 @@ def _select_quick_start_api_base(
         api_base,
         "str",
     )
+    if base_answer is _BACK_PRESSED:
+        return _BACK_PRESSED
     if base_answer is None:
         return None
     api_base = base_answer.strip().rstrip("/")
@@ -1556,8 +1629,9 @@ def _select_quick_start_api_base(
     return api_base, True
 
 
-def _configure_quick_start_provider(config: Config) -> bool:
+def _configure_quick_start_provider(config: Config) -> bool | object:
     """Configure the beginner path from provider credentials and model."""
+    while True:
         _show_quick_start_progress(1)
 
         provider_choices = _get_quick_start_provider_choices()
@@ -1566,7 +1640,7 @@ def _configure_quick_start_provider(config: Config) -> bool:
             list(provider_choices) + ["<- Back"],
         )
         if answer is _BACK_PRESSED or answer is None or answer == "<- Back":
-        return False
+            return _BACK_PRESSED
         assert isinstance(answer, str)
         provider_name = provider_choices[answer]
         provider_info = _get_quick_start_provider_info().get(provider_name)
@@ -1575,6 +1649,8 @@ def _configure_quick_start_provider(config: Config) -> bool:
         base_was_prompted = False
         if provider_name in _QUICK_START_ENDPOINT_CHOICES:
             api_base_result = _select_quick_start_api_base(provider_name, answer, provider_info)
+            if api_base_result is _BACK_PRESSED:
+                continue
             if api_base_result is None:
                 return False
             api_base, base_was_prompted = api_base_result
@@ -1582,6 +1658,8 @@ def _configure_quick_start_provider(config: Config) -> bool:
         api_key: str | None = None
         if _quick_start_requires_api_key(provider_name, provider_info):
             api_key = _input_text(f"{answer} API key", "", "str")
+            if api_key is _BACK_PRESSED:
+                continue
             if api_key is None:
                 return False
             api_key = api_key.strip()
@@ -1594,6 +1672,8 @@ def _configure_quick_start_provider(config: Config) -> bool:
             and _quick_start_requires_base_url(provider_name, provider_info)
         ):
             api_base_result = _select_quick_start_api_base(provider_name, answer, provider_info)
+            if api_base_result is _BACK_PRESSED:
+                continue
             if api_base_result is None:
                 return False
             api_base, base_was_prompted = api_base_result
@@ -1604,6 +1684,8 @@ def _configure_quick_start_provider(config: Config) -> bool:
             return False
 
         model = _input_model_with_autocomplete("Model ID", "", provider_name)
+        if model is _BACK_PRESSED:
+            continue
         model = (model or "").strip()
         if not model:
             console.print("[yellow]! Model ID is required for Quick Start[/yellow]")
@@ -1635,17 +1717,23 @@ def _enable_quick_start_websocket_defaults(config: Config) -> bool:
         f"[{_UI_MUTED}]This lets the browser UI at http://127.0.0.1:8765 connect to nanobot.[/]"
     )
     console.print()
+    while True:
         answer = _get_questionary().confirm(
             "Enable WebSocket channel now?",
             default=True,
         ).ask()
         if not answer:
-        console.print("[yellow]! Quick Start needs the WebSocket channel for the local WebUI[/yellow]")
+            console.print(
+                "[yellow]! Quick Start needs the WebSocket channel for the local WebUI[/yellow]"
+            )
             return False
         webui_secret = _input_secret("Set a WebUI password")
+        if webui_secret is _BACK_PRESSED:
+            continue
         if not webui_secret:
             console.print("[yellow]! WebUI password is required when enabling WebSocket[/yellow]")
             return False
+        break
 
     config_cls = _get_channel_config_class("websocket")
     if config_cls is None:
@@ -1701,7 +1789,10 @@ def _configure_quick_start(config: Config) -> bool:
         "Choose provider endpoint, add credentials and model, then enable the local WebUI channel.",
     )
     draft = config.model_copy(deep=True)
-    if not _configure_quick_start_provider(draft):
+    provider_result = _configure_quick_start_provider(draft)
+    if provider_result is _BACK_PRESSED:
+        return False
+    if not provider_result:
         _pause()
         return False
     if not _enable_quick_start_websocket_defaults(draft):
@@ -1761,16 +1852,7 @@ def _get_main_menu_choices(has_unsaved_changes: bool) -> list[str]:
 def _configure_advanced_settings(config: Config) -> None:
     """Show lower-frequency setup options behind one advanced menu."""
     last_choice: str | None = None
-    while True:
+    choices = [
-        try:
-            console.clear()
-            _show_section_header(
-                "Advanced Settings",
-                "Use these when the default API-key setup is not enough.",
-            )
-            answer = _get_questionary().select(
-                "What would you like to configure?",
-                choices=[
         "[P] LLM Provider",
         "[M] Model Presets",
         "[C] Chat Channel",
@@ -1781,14 +1863,23 @@ def _configure_advanced_settings(config: Config) -> None:
         "[T] Tools",
         "[V] View Configuration Summary",
         "<- Back",
-                ],
+    ]
+    while True:
+        try:
+            console.clear()
+            _show_section_header(
+                "Advanced Settings",
+                "Use these when the default API-key setup is not enough.",
+            )
+            answer = _select_with_back(
+                "What would you like to configure?",
+                choices,
                 default=last_choice,
-                qmark=">",
+            )
-            ).ask()
         except KeyboardInterrupt:
             break
 
-        if answer is None or answer == "<- Back":
+        if answer is _BACK_PRESSED or answer is None or answer == "<- Back":
             break
 
         _advanced_dispatch = {
@@ -1830,22 +1921,19 @@ def run_onboard(initial_config: Config | None = None) -> OnboardResult:
     config = base_config.model_copy(deep=True)
     _sync_preset_cache(config)
 
-    last_main_choice: str | None = None
     while True:
         console.clear()
         _show_main_menu_header()
 
         try:
-            answer = _get_questionary().select(
+            answer = _select_with_back(
                 "What would you like to do?",
-                choices=_get_main_menu_choices(_has_unsaved_changes(original_config, config)),
+                _get_main_menu_choices(_has_unsaved_changes(original_config, config)),
-                default=last_main_choice,
+            )
-                qmark=">",
-            ).ask()
         except KeyboardInterrupt:
             answer = None
 
-        if answer is None:
+        if answer is _BACK_PRESSED or answer is None:
             action = _prompt_main_menu_exit(_has_unsaved_changes(original_config, config))
             if action == "save":
                 return OnboardResult(config=config, should_save=True)
@@ -1863,5 +1951,4 @@ def run_onboard(initial_config: Config | None = None) -> OnboardResult:
         if answer in {"[X] Exit", "[X] Exit Without Saving"}:
             return OnboardResult(config=original_config, should_save=False)
         if answer == "[A] Advanced Settings":
-            last_main_choice = answer
             _configure_advanced_settings(config)

tests/agent/test_onboard_logic.py

@@ -520,24 +520,18 @@ class TestRunOnboardExitBehavior:
             ]
         )
 
-        class FakePrompt:
+        def fake_select_with_back(*_args, **_kwargs):
-            def __init__(self, response):
+            response = next(responses)
-                self.response = response
+            if isinstance(response, BaseException):
-
+                raise response
-            def ask(self):
+            return response
-                if isinstance(self.response, BaseException):
-                    raise self.response
-                return self.response
-
-        def fake_select(*_args, **_kwargs):
-            return FakePrompt(next(responses))
 
         def fake_configure_general_settings(config, section):
             if section == "Agent Settings":
                 config.agents.defaults.model = "test/provider-model"
 
         monkeypatch.setattr(onboard_wizard, "_show_main_menu_header", lambda: None)
-        monkeypatch.setattr(onboard_wizard, "questionary", SimpleNamespace(select=fake_select))
+        monkeypatch.setattr(onboard_wizard, "_select_with_back", fake_select_with_back)
         monkeypatch.setattr(onboard_wizard, "_configure_general_settings", fake_configure_general_settings)
 
         result = run_onboard(initial_config=initial_config)
@@ -868,6 +862,22 @@ class TestApiServerRegistration:
 class TestMainMenuUpdate:
     """Tests for main menu including new Channel Common and API Server items."""
 
+    def test_choice_viewport_keeps_long_menus_within_terminal_height(self):
+        """Long provider menus should render as a bounded scrolling slice."""
+        assert onboard_wizard._choice_viewport(selected_index=0, total=20, visible_count=5) == (0, 5)
+        assert onboard_wizard._choice_viewport(selected_index=10, total=20, visible_count=5) == (
+            8,
+            13,
+        )
+        assert onboard_wizard._choice_viewport(selected_index=19, total=20, visible_count=5) == (
+            15,
+            20,
+        )
+
+    def test_choice_viewport_handles_tiny_terminals(self):
+        """A one-row menu is still usable instead of failing as window-too-small."""
+        assert onboard_wizard._choice_viewport(selected_index=3, total=5, visible_count=0) == (3, 4)
+
     def test_main_menu_hides_save_actions_until_needed(self):
         """The first screen should not show save or summary actions before edits."""
         from nanobot.cli.onboard import _get_main_menu_choices
@@ -893,22 +903,15 @@ class TestMainMenuUpdate:
             "[Q] Quick Start",
         ])
 
-        class FakePrompt:
+        def fake_select_with_back(*_args, **_kwargs):
-            def __init__(self, response):
+            return next(responses)
-                self.response = response
-
-            def ask(self):
-                return self.response
-
-        def fake_select(*_args, **_kwargs):
-            return FakePrompt(next(responses))
 
         def fake_quick_start(config):
             config.agents.defaults.bot_name = "quickbot"
             return True
 
         monkeypatch.setattr(onboard_wizard, "_show_main_menu_header", lambda: None)
-        monkeypatch.setattr(onboard_wizard, "questionary", SimpleNamespace(select=fake_select))
+        monkeypatch.setattr(onboard_wizard, "_select_with_back", fake_select_with_back)
         monkeypatch.setattr(onboard_wizard, "_configure_quick_start", fake_quick_start)
 
         result = run_onboard(initial_config=initial_config)
@@ -916,6 +919,46 @@ class TestMainMenuUpdate:
         assert result.should_save is True
         assert result.config.agents.defaults.bot_name == "quickbot"
 
+    def test_main_menu_default_resets_after_returning_from_advanced(self, monkeypatch):
+        """Returning from Advanced should not leave its item visually selected."""
+        initial_config = Config()
+        responses = iter([
+            "[A] Advanced Settings",
+            "<- Back",
+            "[X] Exit",
+        ])
+        main_defaults: list[str | None] = []
+
+        def fake_select_with_back(prompt, _choices, default=None):
+            if prompt == "What would you like to do?":
+                main_defaults.append(default)
+            return next(responses)
+
+        monkeypatch.setattr(onboard_wizard, "_show_main_menu_header", lambda: None)
+        monkeypatch.setattr(onboard_wizard, "_show_section_header", lambda *a, **kw: None)
+        monkeypatch.setattr(onboard_wizard, "_select_with_back", fake_select_with_back)
+
+        result = run_onboard(initial_config=initial_config)
+
+        assert result.should_save is False
+        assert main_defaults == [None, None]
+
+    def test_ask_prompt_shortens_escape_timeout(self):
+        """Questionary text prompts should not wait the default timeout on Escape."""
+
+        class FakePrompt:
+            def __init__(self):
+                self.application = SimpleNamespace(ttimeoutlen=0.5, timeoutlen=1.0)
+
+            def ask(self):
+                return "ok"
+
+        prompt = FakePrompt()
+
+        assert onboard_wizard._ask_prompt(prompt) == "ok"
+        assert prompt.application.ttimeoutlen == onboard_wizard._PROMPT_ESCAPE_TIMEOUT_SECONDS
+        assert prompt.application.timeoutlen == onboard_wizard._PROMPT_ESCAPE_TIMEOUT_SECONDS
+
     def test_quick_start_provider_choices_include_all_chat_providers(self):
         """Quick Start should be driven by the provider registry, not a short allowlist."""
         from nanobot.providers.registry import PROVIDERS
@@ -983,6 +1026,45 @@ class TestMainMenuUpdate:
         assert websocket["websocketRequiresToken"] is True
         assert websocket["tokenIssueSecret"] == "webui-secret"
 
+    def test_quick_start_provider_menu_escape_returns_back(self, monkeypatch):
+        """Esc from the first Quick Start menu should return to the main menu."""
+        config = Config()
+
+        monkeypatch.setattr(onboard_wizard, "_show_quick_start_progress", lambda *_args: None)
+        monkeypatch.setattr(
+            onboard_wizard,
+            "_select_with_back",
+            lambda *a, **kw: onboard_wizard._BACK_PRESSED,
+        )
+
+        assert onboard_wizard._configure_quick_start_provider(config) is onboard_wizard._BACK_PRESSED
+        assert "primary" not in config.model_presets
+
+    def test_quick_start_provider_back_skips_pause(self, monkeypatch):
+        """Returning from Quick Start should not require an extra Enter key press."""
+        config = Config()
+        pause_messages: list[str] = []
+
+        def fail_websocket_defaults(*_args, **_kwargs):
+            raise AssertionError("Back navigation should not continue Quick Start")
+
+        monkeypatch.setattr(onboard_wizard.console, "clear", lambda: None)
+        monkeypatch.setattr(onboard_wizard, "_show_section_header", lambda *a, **kw: None)
+        monkeypatch.setattr(
+            onboard_wizard,
+            "_configure_quick_start_provider",
+            lambda *_args: onboard_wizard._BACK_PRESSED,
+        )
+        monkeypatch.setattr(
+            onboard_wizard,
+            "_enable_quick_start_websocket_defaults",
+            fail_websocket_defaults,
+        )
+        monkeypatch.setattr(onboard_wizard, "_pause", lambda message="": pause_messages.append(message))
+
+        assert onboard_wizard._configure_quick_start(config) is False
+        assert pause_messages == []
+
     def test_quick_start_websocket_decline_rolls_back_provider_defaults(self, monkeypatch):
         """A failed WebSocket step should not leave saveable Quick Start defaults behind."""
         config = Config()
@@ -1085,6 +1167,34 @@ class TestMainMenuUpdate:
         assert config.model_presets["primary"].provider == "openai"
         assert config.model_presets["primary"].model == "gpt-4o-mini"
 
+    def test_quick_start_api_key_escape_returns_to_provider_choice(self, monkeypatch):
+        """Esc from an API-key prompt should go back to provider selection."""
+        config = Config()
+        provider_answers = iter(["DeepSeek", "OpenAI"])
+        api_key_answers = iter([onboard_wizard._BACK_PRESSED, "sk-openai-test"])
+        selected_providers: list[str] = []
+
+        def fake_select(*_args, **_kwargs):
+            selected = next(provider_answers)
+            selected_providers.append(selected)
+            return selected
+
+        monkeypatch.setattr(onboard_wizard, "_show_quick_start_progress", lambda *_args: None)
+        monkeypatch.setattr(onboard_wizard, "_select_with_back", fake_select)
+        monkeypatch.setattr(onboard_wizard, "_input_text", lambda *a, **kw: next(api_key_answers))
+        monkeypatch.setattr(
+            onboard_wizard,
+            "_input_model_with_autocomplete",
+            lambda *a, **kw: "gpt-4o-mini",
+        )
+
+        assert onboard_wizard._configure_quick_start_provider(config) is True
+
+        assert selected_providers == ["DeepSeek", "OpenAI"]
+        assert config.providers.deepseek.api_key is None
+        assert config.providers.openai.api_key == "sk-openai-test"
+        assert config.model_presets["primary"].provider == "openai"
+
     def test_quick_start_zhipu_coding_plan_uses_coding_base_url(self, monkeypatch):
         """Zhipu Coding Plan should not use the standard Zhipu base URL."""
         config = Config()
@@ -1441,24 +1551,18 @@ class TestMainMenuUpdate:
             "[S] Save and Exit",
         ])
 
-        class FakePrompt:
+        def fake_select_with_back(*_args, **_kwargs):
-            def __init__(self, response):
+            response = next(responses)
-                self.response = response
+            if isinstance(response, BaseException):
-
+                raise response
-            def ask(self):
+            return response
-                if isinstance(self.response, BaseException):
-                    raise self.response
-                return self.response
-
-        def fake_select(*_args, **_kwargs):
-            return FakePrompt(next(responses))
 
         def fake_configure_general_settings(config, section):
             if section == "Channel Common":
                 config.channels.send_tool_hints = True
 
         monkeypatch.setattr(onboard_wizard, "_show_main_menu_header", lambda: None)
-        monkeypatch.setattr(onboard_wizard, "questionary", SimpleNamespace(select=fake_select))
+        monkeypatch.setattr(onboard_wizard, "_select_with_back", fake_select_with_back)
         monkeypatch.setattr(onboard_wizard, "_configure_general_settings", fake_configure_general_settings)
 
         result = run_onboard(initial_config=initial_config)
@@ -1477,24 +1581,18 @@ class TestMainMenuUpdate:
             "[S] Save and Exit",
         ])
 
-        class FakePrompt:
+        def fake_select_with_back(*_args, **_kwargs):
-            def __init__(self, response):
+            response = next(responses)
-                self.response = response
+            if isinstance(response, BaseException):
-
+                raise response
-            def ask(self):
+            return response
-                if isinstance(self.response, BaseException):
-                    raise self.response
-                return self.response
-
-        def fake_select(*_args, **_kwargs):
-            return FakePrompt(next(responses))
 
         def fake_configure_general_settings(config, section):
             if section == "API Server":
                 config.api.port = 9999
 
         monkeypatch.setattr(onboard_wizard, "_show_main_menu_header", lambda: None)
-        monkeypatch.setattr(onboard_wizard, "questionary", SimpleNamespace(select=fake_select))
+        monkeypatch.setattr(onboard_wizard, "_select_with_back", fake_select_with_back)
         monkeypatch.setattr(onboard_wizard, "_configure_general_settings", fake_configure_general_settings)
 
         result = run_onboard(initial_config=initial_config)
@@ -1514,23 +1612,17 @@ class TestMainMenuUpdate:
             "[X] Exit",
         ])
 
-        class FakePrompt:
+        def fake_select_with_back(*_args, **_kwargs):
-            def __init__(self, response):
+            response = next(responses)
-                self.response = response
+            if isinstance(response, BaseException):
-
+                raise response
-            def ask(self):
+            return response
-                if isinstance(self.response, BaseException):
-                    raise self.response
-                return self.response
-
-        def fake_select(*_args, **_kwargs):
-            return FakePrompt(next(responses))
 
         def fake_pause():
             pause_called["n"] += 1
 
         monkeypatch.setattr(onboard_wizard, "_show_main_menu_header", lambda: None)
-        monkeypatch.setattr(onboard_wizard, "questionary", SimpleNamespace(select=fake_select))
+        monkeypatch.setattr(onboard_wizard, "_select_with_back", fake_select_with_back)
         # _pause is called inside _show_summary, so we patch it there
         monkeypatch.setattr(onboard_wizard, "_pause", fake_pause)
         # Suppress summary output but still call _pause
@@ -1569,6 +1661,19 @@ class TestInputTextEmptyString:
         result = _input_text("Name", "old", "str")
         assert result is None
 
+    def test_escape_returns_back_pressed(self, monkeypatch):
+        """_input_text should preserve the local back sentinel."""
+        monkeypatch.setattr(
+            onboard_wizard,
+            "_get_questionary",
+            lambda: SimpleNamespace(
+                text=lambda *a, **kw: SimpleNamespace(ask=lambda: onboard_wizard._BACK_PRESSED)
+            ),
+        )
+
+        result = _input_text("Name", "old", "str")
+        assert result is onboard_wizard._BACK_PRESSED
+
 
 class TestIsStrOrNone:
     """Tests for _is_str_or_none helper."""
@@ -1697,13 +1802,8 @@ class TestModelPresetWizard:
                 self.response = response
 
             def ask(self):
-                if isinstance(self.response, BaseException):
-                    raise self.response
                 return self.response
 
-        def fake_select(*_args, **_kwargs):
-            return FakePrompt(next(responses))
-
         def fake_text(*_args, **_kwargs):
             return FakePrompt(next(responses))
 
@@ -1714,9 +1814,7 @@ class TestModelPresetWizard:
             return next(responses)
 
         monkeypatch.setattr(onboard_wizard, "_select_with_back", fake_select_with_back)
-        monkeypatch.setattr(
+        monkeypatch.setattr(onboard_wizard, "questionary", SimpleNamespace(text=fake_text))
-            onboard_wizard, "questionary", SimpleNamespace(select=fake_select, text=fake_text)
-        )
         monkeypatch.setattr(onboard_wizard, "_configure_pydantic_model", fake_configure)
         monkeypatch.setattr(onboard_wizard, "_show_section_header", lambda *a, **kw: None)
         monkeypatch.setattr(onboard_wizard, "console", SimpleNamespace(clear=lambda: None))
@@ -1829,17 +1927,11 @@ class TestModelPresetWizard:
             "[S] Save and Exit",
         ])
 
-        class FakePrompt:
+        def fake_select_with_back(*_args, **_kwargs):
-            def __init__(self, response):
+            response = next(responses)
-                self.response = response
+            if isinstance(response, BaseException):
-
+                raise response
-            def ask(self):
+            return response
-                if isinstance(self.response, BaseException):
-                    raise self.response
-                return self.response
-
-        def fake_select(*_args, **_kwargs):
-            return FakePrompt(next(responses))
 
         preset_mutated = {"n": 0}
 
@@ -1847,7 +1939,7 @@ class TestModelPresetWizard:
             preset_mutated["n"] += 1
             config.model_presets["test"] = ModelPresetConfig(model="gpt-test")
 
-        monkeypatch.setattr(onboard_wizard, "questionary", SimpleNamespace(select=fake_select))
+        monkeypatch.setattr(onboard_wizard, "_select_with_back", fake_select_with_back)
         monkeypatch.setattr(onboard_wizard, "_configure_model_presets", fake_configure_model_presets)
         monkeypatch.setattr(onboard_wizard, "_show_main_menu_header", lambda: None)
         monkeypatch.setattr(onboard_wizard, "_show_section_header", lambda *a, **kw: None)