Confirm quitting with a vertical leave dialog

Choosing "quit" or pressing Esc at the top menu asked to leave through a
horizontal Yes/No toggle that sat at odds with the rest of the TUI, which is
select lists everywhere else. Replace it with a small select dialog in that
same style: "Quit and disconnect" is the highlighted default so Enter leaves,
while Esc — or choosing "Stay" — returns to the menu.

select() grows optional filterable/footer_hint passthroughs so this short,
fixed choice skips type-to-filter and shows a tailored "Enter quit · Esc stay"
hint.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

meshterm/ui/menu.py

@@ -186,8 +186,29 @@ async def _menu_loop(ctx: AppContext, session: TuiSession) -> None:
         selection = await session.select(
             "What would you like to do?", items, default=last_selection
         )
+        # Both picking "quit" and pressing Esc at the top level ask to leave; confirm on a
+        # small dialog first so a stray key doesn't drop the user out of the session. Enter
+        # takes the highlighted default (Quit) and leaves; Esc — or choosing "Stay" — returns
+        # to the menu (select maps a cancel to None).
         if selection in (None, "__quit__"):
-            return
+            leave = await session.select(
+                "Leave MeshTerm?",
+                [
+                    Choice(title="Quit and disconnect", value="quit"),
+                    Choice(title="Stay", value="stay"),
+                ],
+                default="quit",
+                wrap=False,
+                filterable=False,
+                footer_hint="↑↓ move · Enter quit · Esc stay",
+            )
+            if leave == "quit":
+                return
+            # Keep the cursor on "quit" when that is what they chose, so a follow-up
+            # attempt lands where they expect; a stray Esc leaves it where it was.
+            if selection == "__quit__":
+                last_selection = "__quit__"
+            continue
         last_selection = selection
         await _run_selection(ctx, selection)
 

meshterm/ui/tui/session.py

@@ -146,12 +146,26 @@ class TuiSession:
             self.pop(screen)
 
     async def select(
-        self, title: str, items: list, *, default: Any = None, wrap: bool = True
+        self,
+        title: str,
+        items: list,
+        *,
+        default: Any = None,
+        wrap: bool = True,
+        filterable: bool = True,
+        footer_hint: Optional[str] = None,
     ) -> Any:
-        """Show a select screen; return the chosen value or ``None`` if cancelled."""
-        result = await self.run_screen(
-            SelectScreen(title, items, default=default, wrap=wrap)
+        """Show a select screen; return the chosen value or ``None`` if cancelled.
+
+        ``filterable`` and ``footer_hint`` are forwarded to the screen for short, fixed
+        lists (a yes-or-no style choice) that want no type-to-filter and a tailored hint.
+        """
+        screen = (
+            SelectScreen(title, items, default=default, wrap=wrap, filterable=filterable, footer_hint=footer_hint)
+            if footer_hint is not None
+            else SelectScreen(title, items, default=default, wrap=wrap, filterable=filterable)
         )
+        result = await self.run_screen(screen)
         return None if result is CANCEL else result
 
     async def select_startup(