Explore and drive a running JavaFX application from its Clojure REPL.

Calls run synchronously on the JavaFX thread; no Platform/runLater is needed.
Input uses synthetic events and works without desktop focus. Application work
scheduled by event handlers may finish later.

Start with tree/props to inspect, all/one to find, point to locate, and
mouse-click!/key-tap!/key-chord! to interact. Separate press/release functions
let you hold keys or buttons across calls.

Inspection accepts a Node, Scene, Window, or synthetic root (called el in
signatures). The root contains all open windows. Queries search descendants;
tree includes its starting element. Results contain live JavaFX objects.
Input accepts a Window, Scene, or synthetic root, never a Node. Omitting the
input target requires exactly one open window. Mouse input picks at scene
coordinates; keyboard input follows that scene's current focus owner.

Example (p is the alias used throughout these docstrings):
  (require '[cljfx.plorer :as p])
  (p/all javafx.stage.Window)
  (def window (p/one javafx.stage.Window)) ; assumes one open window
  (p/tree window :depth 3 :props [:id :text])
  (def field (p/one window "#name")) ; replace with a field ID found above
  (p/mouse-click! window (p/point field 0.5 0.5) :primary)
  (p/key-tap! window :a)
  (p/props field :only [:text])