feat: init nofxi - AI Trading Agent module

NOFXi — Your AI Trading Agent, built on NOFX.

Architecture:
- Agent Core: intent routing, conversation memory, trade confirmation
- Memory: SQLite (trades, conversations, preferences, strategies)
- Thinking: LLM client (OpenAI/claw402/DeepSeek compatible)
- Execution: Bridge to NOFX trader engine (9 exchanges)
- Perception: Market monitor, price alerts, anomaly detection
- Interaction: Telegram bot + REST API + OpenAI-compatible endpoint

Features:
- Natural language trading (中英文)
- /buy /sell /analyze /watch /alert /positions /balance
- Daily P/L reports, portfolio risk checks
- Trade confirmation flow (safety first)
- Price polling and alert notifications

nofxi/README.md

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+<h1 align="center">NOFXi</h1>
+
+<p align="center">
+  <strong>Your AI Trading Agent.</strong><br/>
+  <strong>Not a tool. A partner that trades with you.</strong>
+</p>
+
+<p align="center">
+  <a href="https://golang.org/"><img src="https://img.shields.io/badge/Go-1.21+-00ADD8?style=flat&logo=go" alt="Go"></a>
+  <a href="https://reactjs.org/"><img src="https://img.shields.io/badge/React-18+-61DAFB?style=flat&logo=react" alt="React"></a>
+  <a href="https://x402.org"><img src="https://img.shields.io/badge/x402-USDC%20Payments-2775CA?style=flat" alt="x402"></a>
+</p>
+
+<p align="center">
+  <a href="#english">English</a> ·
+  <a href="#中文">中文</a>
+</p>
+
+---
+
+<a id="english"></a>
+
+## What is NOFXi?
+
+NOFXi is an **AI Trading Agent** built on top of [NOFX](https://github.com/NoFxAiOS/nofx). While NOFX is an open-source AI trading engine, NOFXi elevates it into a fully autonomous agent that perceives, thinks, remembers, and acts.
+
+**NOFX** = Engine. **NOFXi** = Intelligence.
+
+### The Difference
+
+| | NOFX (Engine) | NOFXi (Agent) |
+|:--|:--|:--|
+| **Interaction** | Configure → Start → Watch Dashboard | "Open a BTC long, 2x leverage, 3% stop loss" |
+| **Intelligence** | AI makes trade decisions | AI understands context, learns from history |
+| **Memory** | Stateless per session | Remembers your preferences, past trades, lessons |
+| **Proactivity** | Executes when triggered | Monitors markets, alerts you, acts autonomously |
+| **Communication** | Dashboard & logs | Natural language via Telegram, proactive notifications |
+
+### Core Capabilities
+
+- 🧠 **Agent Core** — Context-aware conversation, intent recognition, memory management
+- 👁️ **Perception** — Market monitoring, anomaly detection, position tracking, sentiment analysis
+- 💭 **Thinking** — Multi-model AI decisions, strategy matching, risk assessment
+- 📝 **Memory** — Trade history, strategy performance, user preferences, market patterns
+- ⚡ **Execution** — Multi-exchange trading, position management, x402 payments
+- 💬 **Interaction** — Natural language trading, proactive alerts, report generation
+
+### Architecture
+
+```
+Interaction Layer (Telegram / Web UI / API)
+         │
+    Agent Core (Conversation + Intent + Context)
+         │
+    ┌────┴───────────┬────────────┐
+    │                │            │
+Perception       Thinking      Memory
+(Market Monitor) (AI Engine)   (Experience DB)
+    │                │            │
+    └────┬───────────┴────────────┘
+         │
+    Execution Layer (Multi-Exchange + x402 Payment)
+```
+
+### Built On
+
+- **[NOFX](https://github.com/NoFxAiOS/nofx)** — Open-source AI trading engine (9 exchanges, 7+ AI models)
+- **[Claw402](https://claw402.ai)** — x402 payment gateway (USDC micropayments)
+- **[x402](https://x402.org)** — Pay-per-request with USDC, no API keys
+
+---
+
+<a id="中文"></a>
+
+## NOFXi 是什么？
+
+NOFXi 是基于 [NOFX](https://github.com/NoFxAiOS/nofx) 构建的 **AI 交易 Agent**。NOFX 是开源的 AI 交易引擎，而 NOFXi 将其升级为一个能感知、思考、记忆、行动的自主 Agent。
+
+**NOFX** = 引擎。**NOFXi** = 智能。
+
+### 核心区别
+
+| | NOFX（引擎） | NOFXi（Agent） |
+|:--|:--|:--|
+| **交互方式** | 配置 → 启动 → 看仪表盘 | "帮我开 BTC 多单，2x 杠杆，3% 止损" |
+| **智能程度** | AI 做交易决策 | AI 理解上下文，从历史中学习 |
+| **记忆** | 每次无状态 | 记住你的偏好、交易历史、教训 |
+| **主动性** | 被触发时执行 | 主动监控市场、通知你、自主行动 |
+| **沟通方式** | 仪表盘和日志 | Telegram 自然语言对话、主动推送 |
+
+### 核心能力
+
+- 🧠 **Agent 核心** — 上下文对话、意图识别、记忆管理
+- 👁️ **感知层** — 市场监控、异动检测、持仓监控、舆情分析
+- 💭 **思考层** — 多模型 AI 决策、策略匹配、风险评估
+- 📝 **记忆层** — 交易历史、策略效果、用户偏好、市场规律
+- ⚡ **执行层** — 多交易所下单、仓位管理、x402 支付
+- 💬 **交互层** — 自然语言交易、主动通知、报告生成
+
+### 技术架构
+
+```
+交互层（Telegram / Web UI / API）
+         │
+    Agent Core（对话理解 + 意图识别 + 上下文管理）
+         │
+    ┌────┴───────────┬────────────┐
+    │                │            │
+  感知层           思考层        记忆层
+（市场监控）    （AI 决策引擎）  （经验库）
+    │                │            │
+    └────┬───────────┴────────────┘
+         │
+    执行层（多交易所 + x402 支付）
+```
+
+### 构建基础
+
+- **[NOFX](https://github.com/NoFxAiOS/nofx)** — 开源 AI 交易引擎（9 家交易所，7+ AI 模型）
+- **[Claw402](https://claw402.ai)** — x402 支付网关（USDC 微支付）
+- **[x402](https://x402.org)** — USDC 按量付费，无需 API Key
+
+---
+
+## Development
+
+```bash
+# Clone
+git clone https://github.com/NoFxAiOS/nofxi.git
+cd nofxi
+
+# Build
+go build ./...
+
+# Run
+go run cmd/nofxi/main.go
+```
+
+## License
+
+Proprietary. All rights reserved.
+
+© 2026 NoFxAiOS