Move all three skills into skills/; add root README; fix paths

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

tests/test_palette.py

@@ -4,7 +4,7 @@ import subprocess
 import sys
 from pathlib import Path
 
-PALETTE = Path(__file__).resolve().parents[1] / "rpa-dashboard-no-ai" / "templates" / "palette.py"
+PALETTE = Path(__file__).resolve().parents[1] / "skills" / "rpa-dashboard-no-ai" / "templates" / "palette.py"
 spec = importlib.util.spec_from_file_location("palette", PALETTE)
 palette = importlib.util.module_from_spec(spec)
 spec.loader.exec_module(palette)