fix(prompt):Decision failure in specific scenarios｜特定场景下的决策失效

[LindenWang01]

📝 Description | 描述

English:
Currently, the leverage ratio configuration between BTC/ETH and mainstream coins is inconsistent. When only BTC is opened as a position, the large model will return the opening leverage ratio of other new positions to be the same as the current position of BTC, resulting in the opening failure (the prompt did not explicitly provide the information about the current leverage ratio configuration).

中文：
当前BTC/ETH与主流币杠杆倍数配置不一致并且开仓只有BTC时,大模型会返回其他新开仓币种的开仓倍数与当前持仓BTC倍数一致,导致开仓失败（prompt中未明确提示当前配置的杠杆倍数的信息）。

🎯 Type of Change | 变更类型

• 🐛 Bug fix | 修复 Bug（不影响现有功能的修复）
• ✨ New feature | 新功能（不影响现有功能的新增）
• 💥 Breaking change | 破坏性变更（会导致现有功能无法正常工作的修复或功能）
• 📝 Documentation update | 文档更新
• 🎨 Code style update | 代码样式更新（格式化、重命名等）
• ♻️ Refactoring | 重构（无功能变更）
• ⚡ Performance improvement | 性能优化
• ✅ Test update | 测试更新
• 🔧 Build/config change | 构建/配置变更
• 🔒 Security fix | 安全修复

---

📋 Changes Made | 具体变更

English:

• Currently, the leverage ratio configuration between BTC/ETH and mainstream coins is inconsistent. When only BTC is opened as a position, the large model will return the opening leverage ratio of other new positions to be the same as the current position of BTC, resulting in the opening failure (the prompt did not explicitly provide the information about the current leverage ratio configuration).

中文：

• 当前BTC/ETH与主流币杠杆倍数配置不一致并且开仓只有BTC时,大模型会返回其他新开仓币种的开仓倍数与当前持仓BTC倍数一致,导致开仓失败（prompt中未明确提示当前配置的杠杆倍数的信息）。

---

🧪 Testing | 测试

Manual Testing | 手动测试

• Tested locally | 本地测试通过
• Tested on testnet | 测试网测试通过（交易所集成相关）
• Tested with different configurations | 测试了不同配置
• Verified no existing functionality broke | 确认没有破坏现有功能

Test Environment | 测试环境

• OS | 操作系统: [macOS]
• Go Version | Go 版本: [1.21.3]
• Node Version | Node 版本: [23.x]
• Exchange | 交易所: [All]

Test Results | 测试结果

{
  "symbol": "ETHUSDT",
  "leverage": 8,
  ...
},
{
  "symbol": "BNBUSDT", 
  "leverage": 4,
  ...
}

---

📸 Screenshots / Demo | 截图/演示

Before | 变更前:
{
"symbol": "ETHUSDT",
"leverage": 8,
...
},
{
"symbol": "BNBUSDT",
"leverage": 8, // ❌ exceed the limit｜超过限制
...
}

After | 变更后:
{
"symbol": "ETHUSDT",
"leverage": 8,
...
},
{
"symbol": "BNBUSDT",
"leverage": 4, // ✅ Compliant with the restrictions｜符合限制
...
}

✅ Checklist | 检查清单

Code Quality | 代码质量

• My code follows the project's code style | 我的代码遵循项目代码风格 (Contributing Guide)
• I have performed a self-review of my code | 我已进行代码自查
• I have commented my code, particularly in hard-to-understand areas | 我已添加代码注释，特别是难以理解的部分
• My changes generate no new warnings or errors | 我的变更没有产生新的警告或错误
• Code compiles successfully | 代码编译成功 (go build / npm run build)
• I have run go fmt (for Go code) | 我已运行 go fmt（Go 代码）
• I have run npm run lint (for frontend code) | 我已运行 npm run lint（前端代码）

Testing | 测试

• I have added tests that prove my fix is effective or that my feature works | 我已添加证明修复有效或功能正常的测试
• New and existing unit tests pass locally | 新旧单元测试在本地通过
• I have tested on testnet (for trading/exchange changes) | 我已在测试网测试（交易/交易所变更）
• Integration tests pass | 集成测试通过

Documentation | 文档

• I have updated the documentation accordingly | 我已相应更新文档
• I have updated the README if needed | 我已更新 README（如需要）
• I have added inline code comments where necessary | 我已在必要处添加代码注释
• I have updated type definitions (for TypeScript changes) | 我已更新类型定义（TypeScript 变更）
• I have updated API documentation (if applicable) | 我已更新 API 文档（如适用）

Git

• My commits follow the conventional commits format | 我的提交遵循 Conventional Commits 格式 (feat:, fix:, etc.)
• I have rebased my branch on the latest dev branch | 我已将分支 rebase 到最新的 dev 分支
• There are no merge conflicts | 没有合并冲突
• Commit messages are clear and descriptive | 提交信息清晰明确

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🔒 Security Considerations | 安全考虑

• No API keys or secrets are hardcoded | 没有硬编码 API 密钥或密钥
• User inputs are properly validated | 用户输入已正确验证
• No SQL injection vulnerabilities introduced | 未引入 SQL 注入漏洞
• No XSS vulnerabilities introduced | 未引入 XSS 漏洞
• Authentication/authorization properly handled | 认证/授权已正确处理
• Sensitive data is encrypted | 敏感数据已加密
• N/A (not security-related) | 不适用（非安全相关）

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⚡ Performance Impact | 性能影响

• No significant performance impact | 无显著性能影响
• Performance improved | 性能提升
• Performance may be impacted (explain below) | 性能可能受影响（请在下方说明）

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🌐 Internationalization | 国际化

• All user-facing text supports i18n | 所有面向用户的文本支持国际化
• Both English and Chinese versions provided | 提供了中英文版本
• N/A | 不适用

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📋 PR Size Estimate | PR 大小估计

• 🟢 Small (< 100 lines) | 小（< 100 行）
• 🟡 Medium (100-500 lines) | 中（100-500 行）
• 🔴 Large (> 500 lines) | 大（> 500 行）

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By submitting this PR, I confirm that:
提交此 PR，我确认：

• I have read the Contributing Guidelines | 我已阅读贡献指南
• I agree to the Code of Conduct | 我同意行为准则
• My contribution is licensed under the MIT License | 我的贡献遵循 MIT 许可证
• I understand this is a voluntary contribution | 我理解这是自愿贡献
• I have the right to submit this code | 我有权提交此代码