feat(engine): 实现阵营投票系统

- 新增 Votes 模型,包含 optimists/fearful 计数和 voted_users 去重列表
- 扩展 Event 模型,添加可选 faction 字段支持投票事件
- 新增 voting.py 模块处理投票逻辑
- 投票规则:每用户每 tick 限投一次,下一 tick 生效
- 投票累加到 factions.power,达到 threshold 触发阵营技能
- 添加 5 个投票系统测试用例,全部 26 个测试通过

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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2025-12-30 13:12:22 +08:00
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"""阵营投票系统 - 允许用户通过投票影响阵营能量"""
from typing import List
from .models import WorldState, Event, Votes
def process_votes(state: WorldState, events: List[Event]) -> None:
"""处理投票事件
规则:
1. 每个用户在一个 tick 内只能投 1 次票(按 user 去重)
2. 每票增加对应 faction 的 votes += 1
"""
for event in events:
if event.type != "vote":
continue
# 验证 faction 有效性
if event.faction not in ("optimists", "fearful"):
continue
# 检查用户是否已投票(去重)
if event.user in state.votes.voted_users:
continue
# 记录投票
state.votes.voted_users.append(event.user)
if event.faction == "optimists":
state.votes.optimists += 1
elif event.faction == "fearful":
state.votes.fearful += 1
def apply_votes_to_factions(state: WorldState) -> None:
"""将投票累加到阵营能量,然后清空投票
在每个 tick 开始时调用:
1. 将 votes 累加进 factions.power
2. 清空 votes包括 voted_users
"""
# 累加投票到阵营能量
state.factions.optimists.power += state.votes.optimists
state.factions.fearful.power += state.votes.fearful
# 清空投票
state.votes = Votes()