werewolf(app): port single-device dealer from partiverse + tests

单机发牌器 — 一台手机轮流传，无 room / 无 ws。30 个角色 + 4 档默认预设
(8/9/10/12 人) + 配置历史（dedup + cap 50）+ 4x 偏好加权 + swipe-to-reveal
+ tap-to-confirm + 3D card flip + 死亡标记，全部本地 localStorage。
RNG 注入，logic 层 29 个 vitest（含 2000 次蒙特卡洛验证偏好命中率 > 40%、
均匀分布 ±5%）。也把 *.tsbuildinfo 加进 .gitignore。

apps/werewolf/frontend/src/__tests__/storage.test.ts

@@ -0,0 +1,39 @@
+import { describe, expect, it } from 'vitest'
+import { addHistory, type HistoryEntry } from '../logic/storage'
+
+describe('addHistory', () => {
+  it('inserts new entries at the front', () => {
+    const h: HistoryEntry[] = [{ playerCount: 8, roles: { 狼人: 2 } }]
+    const out = addHistory(h, { playerCount: 9, roles: { 狼人: 3 } })
+    expect(out[0]).toEqual({ playerCount: 9, roles: { 狼人: 3 } })
+    expect(out).toHaveLength(2)
+  })
+
+  it('deduplicates same (playerCount, roles)', () => {
+    const h: HistoryEntry[] = [
+      { playerCount: 8, roles: { 狼人: 2, 村民: 6 } },
+      { playerCount: 9, roles: { 狼人: 3, 村民: 6 } },
+    ]
+    const out = addHistory(h, { playerCount: 8, roles: { 狼人: 2, 村民: 6 } })
+    expect(out).toHaveLength(2)
+    expect(out[0]).toEqual({ playerCount: 8, roles: { 狼人: 2, 村民: 6 } })
+    // 9 人配置应该还在
+    expect(out[1]).toEqual({ playerCount: 9, roles: { 狼人: 3, 村民: 6 } })
+  })
+
+  it('distinguishes entries with same playerCount but different role counts', () => {
+    const h: HistoryEntry[] = [{ playerCount: 8, roles: { 狼人: 2 } }]
+    const out = addHistory(h, { playerCount: 8, roles: { 狼人: 3 } })
+    expect(out).toHaveLength(2)
+  })
+
+  it('caps history at 50 entries', () => {
+    let h: HistoryEntry[] = []
+    for (let i = 0; i < 100; i++) {
+      h = addHistory(h, { playerCount: 8, roles: { 狼人: i } })
+    }
+    expect(h).toHaveLength(50)
+    // 最新的（i=99）在最前
+    expect(h[0]).toEqual({ playerCount: 8, roles: { 狼人: 99 } })
+  })
+})