Initial commit: Text Adventure Game

Features:
- Combat system with AP/EP hit calculation and three-layer defense
- Auto-combat/farming mode
- Item system with stacking support
- Skill system with levels, milestones, and parent skill sync
- Shop system with dynamic pricing
- Inventory management with bulk selling
- Event system
- Game loop with offline earnings
- Save/Load system

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

.claude/agents/error-no-docs.md

@@ -0,0 +1,6 @@
+---
+name: error-no-docs
+description: 处理缺少步骤文档的情况
+model: sonnet
+---
+错误：未找到步骤文档。此工作流需要步骤文档才能继续。请创建一个包含开发步骤的 step_documentation.md 文件。