teach <skill> to <player> — tutor another scavenger in the room.
Requires teach raw ≥ 1 (learn teach from coach at athletics raw ≥ 6)
and the skill at raw ≥ 3. Combat skills ok. Meta teach is coach-only.
First pass: discover + first nick (raw 0→1) once per student/skill.
Second step (your skill raw ≥ 5, their raw 1–5): grant a little
skill progress toward their next nick — not free raw; once/day per
student/skill; capped so tutoring alone never nicks. Day cooldown
refuse shows remaining wait in hours.
Else already-taught / already-known: ticks your teach progress a
little (consolation; ~1h cooldown — remaining wait in minutes).
Student never gets free raw from consolation.
Clear refuses: missing target, fogged/shallow skill, teach raw 0, self,
non-player target, student past raw 5 for drills.
NPCs still teach ranks: learn <skill> from <npc>.