Waving Hands: a browser duel after Bartle's 1977 game

SvelteKit 5 single-player version against a heuristic bot. The engine
resolves all forty spells simultaneously as the rules describe, the
ledger of gestures is the interface, and the duel is saved in the
browser. Tester feedback rounds added per-hand planning, threat
evidence, a result strip with one-time rule explanations, a phone
layout and a structured rules page. Deploys as a static site behind
Caddy.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

src/lib/game/simulation.test.ts

@@ -0,0 +1,42 @@
+import { describe, expect, it } from 'vitest';
+import { chooseBotTurn } from './bot';
+import { resolveTurn } from './resolve';
+import { createGame } from './state';
+
+function lcg(seed: number) {
+	let s = seed >>> 0;
+	return () => {
+		s = (s * 1664525 + 1013904223) >>> 0;
+		return s / 4294967296;
+	};
+}
+
+describe('bot versus bot', () => {
+	it('sixty duels end without errors and by death, not surrender', () => {
+		let finished = 0;
+		let byDeath = 0;
+		let totalTurns = 0;
+		for (let seed = 1; seed <= 60; seed++) {
+			let state = createGame({ A: 'Black', B: 'White' }, seed);
+			const rngA = lcg(seed * 7 + 1);
+			const rngB = lcg(seed * 13 + 5);
+			for (let turn = 0; turn < 80 && !state.over; turn++) {
+				const a = chooseBotTurn(state, 'A', rngA);
+				const b = chooseBotTurn(state, 'B', rngB);
+				state = resolveTurn(state, { A: a, B: b });
+			}
+			if (state.over) {
+				finished++;
+				totalTurns += state.turn;
+				if (!state.wizards.A.alive || !state.wizards.B.alive) byDeath++;
+			}
+			for (const w of Object.values(state.wizards)) {
+				expect(w.hp).toBeGreaterThanOrEqual(0);
+				expect(w.hp).toBeLessThanOrEqual(15);
+			}
+		}
+		expect(finished).toBeGreaterThan(45);
+		expect(byDeath).toBe(finished);
+		expect(totalTurns / finished).toBeLessThan(40);
+	}, 60000);
+});