Consolidate Odysseus agent harness and tool contracts

static/js/editor/tool-shortcuts.js

@@ -0,0 +1,7 @@
+// Shared by the palette, dispatch map and shortcut reference.
+export const TOOL_SHORTCUTS = Object.freeze({
+  move: 'V', hand: 'H', crop: 'C', text: 'T', shape: 'U',
+  brush: 'B', gradient: 'G', eraser: 'E', eyedropper: 'I',
+  smudge: 'Y', clone: 'S', heal: 'J', dodge: 'O',
+  marquee: 'M', lasso: 'L', wand: 'W',
+});