fix(tui): correct preset cycling keybinding to ctrl+tab and add persona tab-cycling

src/cleveragents/tui/app.py

@@ -93,7 +93,8 @@ if _TEXTUAL_AVAILABLE:
         BINDINGS: ClassVar[list[tuple[str, str, str]]] = [
             ("ctrl+q", "quit", "Quit"),
             ("f1", "help", "Help"),
-            ("ctrl+t", "cycle_preset", "Cycle Preset"),
+            ("ctrl+tab", "cycle_preset", "Cycle Preset"),
+            ("shift+tab", "cycle_persona", "Cycle Persona"),
         ]
 
         def __init__(
@@ -153,6 +154,10 @@ if _TEXTUAL_AVAILABLE:
             self._persona_state.cycle_preset(self._session.session_id)
             self._refresh_persona_bar()
 
+        def action_cycle_persona(self) -> None:
+            self._persona_state.cycle_persona(self._session.session_id)
+            self._refresh_persona_bar()
+
         def _refresh_persona_bar(self) -> None:
             persona = self._persona_state.active_persona(self._session.session_id)
             preset = self._persona_state.current_preset(self._session.session_id)

src/cleveragents/tui/persona/state.py

@@ -63,6 +63,37 @@ class PersonaState:
         self.preset_by_session[session_id] = next_name
         return next_name
 
+    def cycle_persona(self, session_id: str) -> str:
+        """Cycle to the next available persona.
+
+        Returns the name of the newly active persona. Only personas with
+        ``cycle_order > 0`` are included in the cycling list, sorted by
+        ascending cycle_order.
+        """
+        personas = [p for p in self.registry.list_personas() if p.cycle_order > 0]
+        if not personas:
+            default = self.registry.ensure_default()
+            self.active_by_session[session_id] = default.name
+            return default.name
+
+        # Sort by cycle_order ascending, then fall back to name for stable ordering
+        ordered = sorted(personas, key=lambda p: (p.cycle_order, p.name))
+        names = [p.name for p in ordered]
+        current = self.active_name(session_id)
+
+        if current not in names:
+            self.active_by_session[session_id] = names[0]
+            self.registry.set_last_persona(names[0])
+            self.preset_by_session[session_id] = "default"
+            return names[0]
+
+        idx = names.index(current)
+        next_name = names[(idx + 1) % len(names)]
+        self.active_by_session[session_id] = next_name
+        self.registry.set_last_persona(next_name)
+        self.preset_by_session[session_id] = "default"
+        return next_name
+
     def effective_arguments(self, session_id: str) -> dict[str, object]:
         persona = self.active_persona(session_id)
         preset = self.current_preset(session_id)

src/cleveragents/tui/widgets/help_panel_overlay.py

@@ -32,7 +32,8 @@ _GLOBAL_ITEMS = (
 _CONTEXT_ITEMS: dict[str, tuple[tuple[str, str], ...]] = {
     "Main Screen": (
         ("enter", "Submit prompt"),
-        ("ctrl+t", "Cycle to next argument preset"),
+        ("ctrl+tab", "Cycle to next argument preset"),
+        ("shift+tab", "Cycle personas in registry"),
         ("@", "Open Reference Picker overlay"),
         ("/", "Open Slash Command overlay"),
         ("! / $", "Activate shell mode"),