Remove the '?' help key from the docs and help: F9 is the help key

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

internal/ui/app.go

@@ -25,7 +25,7 @@ type view struct {
 	onShow, onHide func()
 	// hints lists the keys that work in this view (shown in the status bar).
 	hints func() string
-	// captureKeys makes the global single-key shortcuts (q, ?) stand back
+	// captureKeys makes the global single-key shortcut (q) stands back
 	// while this view is shown, because its fields take typed text.
 	captureKeys bool
 }
@@ -370,7 +370,7 @@ func (a *App) renderStatus() {
 		if v.hints != nil {
 			parts = append(parts, v.hints())
 		}
-		if v.captureKeys { // q and ? are text there
+		if v.captureKeys { // q is text there
 			parts = append(parts, "F9 help · F1-F7 views")
 		} else {
 			parts = append(parts, "F9 help · F1-F7 · q quit")