feat: complete ONI Agent project with full Mod API, Python toolchain, and development guide

- Implement all Mod API endpoints (buildings, research, geysers, alerts, critters, deconstruct, prioritize, research, schedule, wardrobe)
- Enhance Python tools with comprehensive CLI, analysis (O2/food/power/temp/water), and 7 blueprints (SPOM, toilet, ranch, farm, cooling, bedroom)
- Add utility scripts: auto_repair, auto_analyze, watch mode, setup
- Write Agent-Mod integration constraints and development guide
- Create skills directory with ONI agent skill definition

skills/oni_agent.md

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+# ONI Agent Skill
+
+## 触发条件
+- 用户提到《缺氧》/ Oxygen Not Included / ONI
+- 用户询问游戏策略、建造方案、资源管理
+- 用户希望 Mod 工具链执行操作
+
+## 能力
+1. 通过 `tools/oni_api.py` 查询游戏状态
+2. 通过 `tools/oni_analyzer.py` 分析并生成建议
+3. 通过 `tools/oni_builder.py` 执行蓝图建造
+4. 通过 `scripts/auto_repair.sh` 诊断连接问题
+5. 通过 `scripts/watch.sh` 持续监控
+
+## 常用操作
+
+```bash
+# 检查连接
+python3 tools/oni_api.py health
+
+# 游戏总览
+python3 tools/oni_api.py status
+
+# 分析报告
+python3 tools/oni_analyzer.py
+
+# 查看蓝图
+python3 tools/oni_builder.py list
+
+# 建造 SPOM （SPOM = Self-Powered Oxygen Module）
+# 偏移坐标 (origin_x, origin_y) 为模块左下角
+python3 tools/oni_builder.py build spom 15 10
+
+# 持续监控（每 60 秒刷新）
+bash scripts/watch.sh 60
+```
+
+## 核心知识
+- SPOM：电解制氧 + 氢气发电闭环
+- 卫生间水循环：卫生间 → 净水器 → 卫生间
+- 冷却系统：液冷机 + 蒸汽机 + 导热管
+- 养殖模块：哈奇/滑鳞/飞鱼