OpenClaw/context-gatekeeper
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feat: 上下文门控器初始实现

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- anchor.py: 锚点提取（中文 2/3-gram、英文单词、代码标识符）
- block.py: 对话块数据结构
- topic_gate.py: 话题门控（overlap/new_ratio 判断切换）
- sparse.py: 稀疏召回（BM25/IDF-overlap + exact match 加分）
- selector.py: 最小覆盖贪心选择
- gatekeeper.py: 完整流程封装
- tests/: 单元测试 + 端到端测试（含 MiniMax API 验证）

特性：
- 纯 Python，无额外模型依赖
- 支持 2 核 2G 环境
- 话题门控 + 稀疏召回 + 最小覆盖选择
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Elaina
2026-04-22 01:09:35 +08:00
commit 071f9ef418
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MINIMAX_API_KEY=your_api_key_here