fix(tui): synchronize HelpPanelOverlay keybinding display with actual app BINDINGS

Reviewed and APPROVED. Closes #3444.

features/steps/tui_help_panel_overlay_coverage_steps.py

@@ -42,7 +42,16 @@ def step_toggle_help_for_context(context, context_name):
 
 @then('the standalone help panel text should contain "{text}"')
 def step_standalone_help_panel_text_contains(context, text):
-    assert text in context.help_panel._text
+    assert text in context.help_panel._text, (
+        f"Expected {text!r} in help panel text, got:\n{context.help_panel._text}"
+    )
+
+
+@then('the standalone help panel text should not contain "{text}"')
+def step_standalone_help_panel_text_not_contains(context, text):
+    assert text not in context.help_panel._text, (
+        f"Expected {text!r} NOT in help panel text, but found it in:\n{context.help_panel._text}"
+    )
 
 
 @then("the help panel should be visible")

features/tui_help_panel_overlay_coverage.feature

@@ -25,3 +25,16 @@ Feature: TUI Help Panel Overlay Coverage
     And the standalone help panel text should contain "Help: Slash Commands"
     When I toggle help for context "Slash Commands"
     Then the help panel should be hidden
+
+  Scenario: help panel Main Screen keybindings match actual app BINDINGS
+    Given a fresh help panel overlay
+    When I show help for context "Main Screen"
+    Then the standalone help panel text should contain "ctrl+t"
+    And the standalone help panel text should not contain "ctrl+tab"
+    And the standalone help panel text should not contain "tab"
+
+  Scenario: help panel global keybindings match actual app BINDINGS
+    Given a fresh help panel overlay
+    When I show help for context "Main Screen"
+    Then the standalone help panel text should contain "ctrl+q"
+    And the standalone help panel text should contain "F1"

src/cleveragents/tui/widgets/help_panel_overlay.py

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