feat: 添加算法目录和知识库 API 文档

- 新增 algorithm/ 目录
- 添加知识库 API 需求文档
- 添加相关截图

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

algorithm/start.sh

@@ -0,0 +1,26 @@
+#!/bin/bash
+
+echo "========================================"
+echo "  启动 Algorithm 服务"
+echo "========================================"
+
+cd "$(dirname "$0")"
+
+# 检查虚拟环境
+if [ ! -d "venv" ]; then
+    echo "[INFO] 创建虚拟环境..."
+    python3 -m venv venv
+fi
+
+echo ""
+echo "安装/更新依赖..."
+source venv/bin/activate
+pip install -r requirements.txt -q
+
+echo ""
+echo "启动服务..."
+echo "访问 http://localhost:8081/docs 查看 API 文档"
+echo "按 Ctrl+C 停止服务"
+echo ""
+
+uvicorn main:app --reload --port 8081 --host 0.0.0.0