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

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

tests/test_bands.py

@@ -3,7 +3,7 @@ import importlib.util
 import re
 from pathlib import Path
 
-BANDS = Path(__file__).resolve().parents[1] / "rpa-dashboard-ai" / "templates" / "web" / "bands.py"
+BANDS = Path(__file__).resolve().parents[1] / "skills" / "rpa-dashboard-ai" / "templates" / "web" / "bands.py"
 spec = importlib.util.spec_from_file_location("bands", BANDS)
 bands = importlib.util.module_from_spec(spec)
 spec.loader.exec_module(bands)