SAGE Doctor

Check that SAGE is wired correctly and report it in the conversation.

Instructions

1. Run sage doctor (it resolves the current repo from the cwd) and capture stdout.
2. Display the output verbatim — it is already formatted (✓ pass / ✗ needs attention) and ends with an N ok · M need attention verdict line. SAGE being OFF or absent is healthy (default-OFF) — report it, never treat it as an error.
3. Fallback (only if sage is not on PATH / the call errors): derive the SAGE repo root from this skill's base directory (go up 2 levels — strip /skills/sage-doctor), then run:

   node "<SAGE_ROOT>/bin/sage" doctor
   

   Re-display verbatim with the same ✓/✗ prefixes.