The duel skill gains a turn poller and game-eight's swap gambit

Game eight: my SWAP HOME BASES mid-delivery eliminated Kestrel for
the first time in the series (instant bank + cross-board exile + the
captured-treasures clause), then the automaton shot me off its vault
steps at one life and won its second straight. The skill records the
poller workflow — a background watcher that exits when the game waits
on Claude, launched ONLY via run_in_background so the harness
actually wakes on it.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_015RCWSTnb1KYTPyL4GmhGnF

.claude/skills/wizwar-duel/SKILL.md

@@ -204,6 +204,27 @@ probing legality is free, so when unsure, try it and read the error.
   Even asking rules questions aloud about a specific card is a tell.
 - Send `chat` for table talk at dramatic moments; it's half the fun.
 
+## The turn poller (no more idling)
+
+After ending each turn (or whenever waiting on others), launch the
+watcher in the background so the harness wakes you the moment the
+game needs you — your turn or a counteraction window:
+
+```
+node <scratchpad>/my-turn-poller.mjs   # run_in_background: true
+```
+
+(Script lives in the session scratchpad; recreate from the skill's
+memory if missing: it joins with the saved seat token, watches state
+messages, and exits with "WAITING ON CLAUDE: <reason>".) Eric asked
+for this after game eight sat waiting on me — don't make him prompt
+"your turn" ever again.
+
+CRITICAL: launch it ONLY with the harness's run_in_background flag —
+that is what wakes you when it exits. A shell `&` inside a normal
+command detaches it into the void and nobody hears it fire (game
+eight, twice). One poller per wait; it exits when the game needs you.
+
 ## Cadence
 
 1. On "go": `view`, read HIS events since your last turn (the client