Move helm posframe up slightly

And display input line in posframe.

modules/completion/helm/autoload/posframe.el

@@ -10,7 +10,7 @@ bottom, which is easier on the eyes on big displays."
         (pos (posframe-poshandler-frame-center info)))
     (cons (car pos)
           (truncate (/ (frame-pixel-height parent-frame)
-                       1.8)))))
+                       2)))))
 
 (defvar +helm--posframe-buffer nil)
 (defvar +helm--posframe-last-window nil)

modules/completion/helm/config.el

@@ -72,7 +72,9 @@ be negative.")
 
   (when (and EMACS26+ (featurep! +childframe))
     (setq helm-display-function #'+helm-posframe-display
-          helm-display-buffer-default-height 0.3)
+          helm-display-buffer-default-height 0.42
+          helm-echo-input-in-header-line t)
+    ;; Fix "Specified window is not displaying the current buffer" error
     (advice-add #'posframe--get-font-height :override #'ignore))
 
   (let ((fuzzy (featurep! +fuzzy)))